Indiana Spring Weather Statistics And Stuff

[Chicago WX]

Today was the fourth day with a maximum temperature of 55º or lower at IND this month. This feat is tied with several other years for the 4th most amount of 55º or lower max temps in May for Indianapolis. It is tied for 1st in the airport era (records since 1943). All but one of those Mays averaged below normal, versus the longterm average.

 

Number of days - year (mean average temp for the month)

7 days - 1917 (56.0) 

7 days - 1908 (64.0)

5 days - 1919 (59.5)

4 days - 2014 (?)

4 days - 2002 (59.7)

4 days - 1989 (59.3)

4 days - 1966 (58.4)

4 days - 1960 (58.8)

4 days - 1947 (58.3)

4 days - 1945 (56.4)

4 days - 1929 (59.4)

4 days - 1924 (55.9)

4 days - 1909 (59.8)

4 days - 1907 (56.7)

4 days - 1897 (58.0)

4 days - 1877 (60.1)

 

Longterm mean average temp for May: 62.8

 

Period of record: 1871-2014

[Chicago WX]

May 17 almanac for Indianapolis

 

High max temp...low max temp...low min temp...high min temp...high precip

 

90 in 1962.....54 in 2011.....36 in 1973.....72 in 1894.....2.30 in 1943

89 in 1889.....54 in 1915.....38 in 1895.....69 in 1962.....1.87 in 1920

88 in 1977.....54 in 1904.....39 in 1994.....68 in 1974.....1.36 in 1938

88 in 1894.....56 in 1968.....39 in 1891.....68 in 1877.....1.07 in 1999

87 in 1982.....57 in 1985.....39 in 1886.....67 in 1911.....0.90 in 1974

87 in 1911.....57 in 1905.....40 in 1893.....67 in 1889.....0.86 in 1947

86 in 1987.....58 in 2010.....42 in 2002.....67 in 1876.....0.67 in 1980

86 in 1951.....58 in 1976.....42 in 1993.....66 in 1991.....0.57 in 2006

86 in 1949.....58 in 1925.....42 in 1984.....66 in 1906.....0.55 in 1944

86 in 1906.....60 in 1946.....42 in 1959.....65 in 2001.....0.54 in 1872

 

Last year: 79...63...0.31

Longterm averages: 72.8...53.0...0.13

[Chicago WX]

55º at IND yesterday. Tied for 3rd now for the most 55º or lower max temps in May.

 

Number of days - year (mean average temp for the month)

7 days - 1917 (56.0) 

7 days - 1908 (64.0)

5 days - 2014 (?)

5 days - 1919 (59.5)

4 days - 2002 (59.7)

4 days - 1989 (59.3)

4 days - 1966 (58.4)

4 days - 1960 (58.8)

4 days - 1947 (58.3)

4 days - 1945 (56.4)

4 days - 1929 (59.4)

4 days - 1924 (55.9)

4 days - 1909 (59.8)

4 days - 1907 (56.7)

4 days - 1897 (58.0)

4 days - 1877 (60.1)

[IWXwx]

I think 3rd place is the best IND can expect.  BTW, what's up with 1908? It must have been a wild weather month with that mean temp, yet seven days of 55° or lower. 

 

What a sinus buster.

[Chicago WX]

I think 3rd place is the best IND can expect.  BTW, what's up with 1908? It must have been a wild weather month with that mean temp, yet seven days of 55° or lower. 

 

What a sinus buster.

 

Yeah, no doubt...this was the last one.

 

And May 1908 was kinda interesting. 7 of the first 8 days had the 55º or lower deal. Then the rest of the month...19 of the days were 75º+ and 12 days were 80º+. The switch was flipped quickly.

[Chicago WX]

May 18 almanac for Indianapolis

 

High max temp...low max temp...low min temp...high min temp...high precip

 

90 in 1962.....55 in 2002.....35 in 1973.....69 in 2000.....2.36 in 1929

89 in 1911.....56 in 1981.....38 in 2014.....69 in 1996.....1.90 in 1995

88 in 1889.....56 in 1916.....39 in 2007.....69 in 1911.....1.67 in 1926

87 in 1998.....57 in 1915.....39 in 2002.....67 in 1889.....1.45 in 1981

87 in 1977.....58 in 2010.....39 in 1925.....67 in 1883.....1.25 in 1927

87 in 1964.....58 in 1904.....40 in 1968.....67 in 1877.....1.08 in 1872

87 in 1951.....59 in 2011.....41 in 1893.....65 in 2001.....0.93 in 2001

86 in 1996.....59 in 1945.....42 in 2009.....65 in 1987.....0.88 in 2004

86 in 1949.....61 in 1874.....42 in 1985.....65 in 1962.....0.84 in 1928

86 in 1944.....62 in 1937.....42 in 1976.....65 in 1918.....0.81 in 1957

 

Last year: 78...63...0.03

Longterm averages: 73.7...53.8...0.18 

[Chicago WX]

May 19 almanac for Indianapolis

 

High max temp...low max temp...low min temp...high min temp...high precip

 

90 in 1977.....42 in 1894.....32 in 2002.....71 in 1996.....1.36 in 1943

89 in 1964.....54 in 2002.....35 in 1894.....70 in 1911.....1.34 in 1957

89 in 1962.....54 in 1968.....40 in 1993.....68 in 1962.....1.17 in 1896

89 in 1911.....54 in 1952.....41 in 1945.....68 in 1883.....1.09 in 1900

88 in 1998.....55 in 1929.....42 in 2006.....67 in 1902.....0.96 in 1931

88 in 1951.....57 in 1935.....42 in 1976.....67 in 1876.....0.89 in 1892

88 in 1877.....57 in 1915.....43 in 2008.....66 in 1938.....0.86 in 1998

87 in 1996.....58 in 1986.....43 in 2007.....66 in 1877.....0.85 in 1938

86 in 2012.....58 in 1922.....43 in 1968.....65 in 1964.....0.75 in 1984

86 in 1978.....58 in 1892.....44 in 1994.....65 in 1939.....0.61 in 1960

 

Last year: 83...61...0.00

Longterm averages: 73.8...54.0...0.14

[Chicago WX]

May 20 almanac for Indianapolis

 

High max temp...low max temp...low min temp...high min temp...high precip...high snow

 

90 in 1977.....47 in 1894.....38 in 1894.....71 in 1996.....1.68 in 1984.....T in 1894

90 in 1941.....50 in 1919.....39 in 1929.....70 in 1871.....1.02 in 1982

90 in 1921.....55 in 2002.....40 in 2002.....69 in 2013.....0.63 in 1915

88 in 2012.....55 in 1924.....40 in 1993.....69 in 1876.....0.61 in 2010

88 in 1975.....56 in 2000.....40 in 1954.....68 in 2004.....0.56 in 1880

88 in 1962.....56 in 1986.....42 in 1956.....67 in 1987.....0.54 in 1942

88 in 1934.....56 in 1952.....42 in 1895.....67 in 1962.....0.45 in 1894

88 in 1893.....56 in 1935.....42 in 1888.....67 in 1921.....0.43 in 1883

87 in 1987.....57 in 1907.....43 in 1981.....67 in 1877.....0.36 in 1902

87 in 1955.....59 in 1949.....43 in 1968.....67 in 1873.....0.34 in 1935

 

Last year: 83...69...0.00

Longterm averages: 74.1...54.7...0.08

[Chicago WX]

May 21 almanac for Indianapolis

 

High max temp...low max temp...low min temp...high min temp...high precip

 

92 in 1941.....50 in 1883.....36 in 2002.....70 in 2004.....2.69 in 1880

90 in 1977.....53 in 1919.....36 in 1895.....70 in 1975.....1.55 in 1957

89 in 1987.....53 in 1894.....38 in 1883.....70 in 1941.....1.30 in 1910

89 in 1972.....56 in 2002.....41 in 1954.....69 in 1934.....1.02 in 1903

89 in 1934.....57 in 1986.....41 in 1929.....68 in 1977.....0.65 in 1953

88 in 1975.....59 in 1990.....42 in 1981.....68 in 1876.....0.59 in 1949

87 in 2004.....59 in 1931.....42 in 1968.....67 in 1987.....0.58 in 1947

87 in 1988.....59 in 1907.....42 in 1924.....67 in 1974.....0.55 in 1897

87 in 1974.....60 in 1897.....42 in 1907.....66 in 1873.....0.46 in 1962

87 in 1970.....61 in 1899.....42 in 1897.....65 in 1959.....0.41 in 1999

 

Last year: 82...62...0.30

Longterm averages: 75.3...54.9...0.12

[Chicago WX]

May 22 almanac for Indianapolis

 

High max temp...low max temp...low min temp...high min temp...high precip

 

93 in 1941.....48 in 1883.....35 in 1883.....70 in 2004.....2.16 in 1989

90 in 1925.....52 in 1919.....36 in 1963.....70 in 1884.....1.43 in 1953

89 in 1994.....53 in 1931.....38 in 2002.....69 in 1941.....1.07 in 1949

89 in 1964.....56 in 1892.....38 in 1917.....68 in 1977.....0.87 in 1958

89 in 1902.....56 in 1889.....39 in 1997.....68 in 1927.....0.85 in 1983

89 in 1887.....57 in 1963.....40 in 1895.....67 in 1991.....0.81 in 1998

88 in 1972.....60 in 1882.....41 in 1924.....66 in 1918.....0.78 in 1885

88 in 1970.....61 in 1926.....41 in 1892.....66 in 1873.....0.73 in 1918

87 in 1965.....61 in 1899.....41 in 1889.....65 in 1965.....0.64 in 1975

87 in 1921.....61 in 1894.....42 in 1993.....65 in 1921.....0.60 in 1984

 

Last year: 75...62...0.07

Longterm averages: 75.4...54.8...0.13

[Chicago WX]

May 23 almanac for Indianapolis

 

High max temp...low max temp...low min temp...high min temp...high precip

 

92 in 1939.....55 in 1893.....37 in 1963.....74 in 1925.....3.13 in 1968

90 in 1994.....56 in 1913.....38 in 1917.....71 in 1890.....2.16 in 1998

90 in 1921.....56 in 1894.....38 in 1883.....71 in 1873.....1.34 in 1902

89 in 1925.....57 in 1891.....39 in 1889.....69 in 1921.....1.20 in 1991

88 in 2010.....58 in 1931.....40 in 1961.....69 in 1903.....0.99 in 1924

88 in 2007.....58 in 1917.....40 in 1931.....68 in 1906.....0.96 in 1978

88 in 1972.....59 in 1963.....41 in 1967.....67 in 1962.....0.84 in 1886

88 in 1965.....59 in 1935.....41 in 1932.....67 in 1912.....0.73 in 2011

87 in 1966.....60 in 2008.....42 in 1956.....67 in 1884.....0.67 in 1957

86 in 2009.....61 in 1919.....42 in 1926.....66 in 1965.....0.66 in 1889

 

Last year: 65...45...T

Longterm averages: 75.2...54.7...0.14

[Chicago WX]

May 24 almanac for Indianapolis

 

High max temp...low max temp...low min temp...high min temp...high precip

 

90 in 1965.....58 in 1992.....37 in 1925.....73 in 1871.....1.55 in 1981

90 in 1921.....58 in 1897.....39 in 1963.....72 in 1873.....1.47 in 1952

89 in 1970.....59 in 1924.....40 in 1961.....70 in 1921.....1.12 in 1971

88 in 2010.....60 in 1979.....41 in 2003.....69 in 2010.....1.12 in 1927

88 in 1994.....60 in 1940.....41 in 1956.....68 in 1878.....0.87 in 1994

88 in 1977.....61 in 1938.....42 in 1924.....67 in 1991.....0.86 in 1996

88 in 1975.....62 in 1999.....42 in 1882.....67 in 1933.....0.68 in 1933

88 in 1885.....62 in 1956.....43 in 2013.....66 in 1936.....0.62 in 1890

87 in 2007.....62 in 1891.....44 in 1999.....66 in 1922.....0.61 in 1907

87 in 1972.....63 in 1949.....44 in 1979.....66 in 1908.....0.42 in 1943

 

Last year: 66...43...0.00

Longterm averages: 76.2...55.3...0.11

[Chicago WX]

May 25 almanac for Indianapolis

 

High max temp...low max temp...low min temp...high min temp...high precip

 

93 in 1965.....52 in 1901.....34 in 1925.....76 in 1871.....1.35 in 1997

92 in 1939.....56 in 1992.....39 in 1992.....73 in 2012.....1.17 in 1989

92 in 1911.....56 in 1925.....39 in 1949.....72 in 1918.....1.09 in 1896

90 in 1972.....57 in 2001.....39 in 1897.....70 in 1991.....0.99 in 2009

90 in 1967.....57 in 1924.....41 in 1999.....69 in 1904.....0.96 in 1903

90 in 1953.....60 in 1940.....41 in 1934.....69 in 1880.....0.93 in 1902

89 in 1926.....61 in 1909.....41 in 1924.....69 in 1879.....0.86 in 2011

89 in 1918.....62 in 1971.....42 in 1877.....69 in 1874.....0.82 in 1940

89 in 1914.....63 in 1979.....43 in 1979.....68 in 1977.....0.82 in 1909

89 in 1896.....63 in 1889.....43 in 1961.....68 in 1939.....0.68 in 1960

 

Last year: 64...46...T

Longterm averages: 75.7...56.4...0.16

[beavis1729]

March-April-May 1977: 44.1...55.4...68.6

March-April-May 2012: 52.8...49.5...64.7

 

April 1977 is the 2nd warmest on record for South Bend, and May 1977 is the warmest.

 

That is quite the turnaround...as I believe the Winter of 1976-77 was one of the coldest on record.

[Chicago WX]

That is quite the turnaround...as I believe the Winter of 1976-77 was one of the coldest on record.

 

For sure. 1976-77 is the 9th coldest on record for South Bend (2013-14 was colder for there BTW). January 1977 was really the key cold month that winter, coming in with an average temp of 12.2º at SBN (-12.3º departure versus the longterm average). December 1976 was below normal and February 1977 was around normal. 

[Chicago WX]

May 26 almanac for Indianapolis

 

High max temp...low max temp...low min temp...high min temp...high precip

 

94 in 1911.....49 in 1961.....35 in 1961.....72 in 1918.....2.33 in 1879

91 in 1972.....50 in 1901.....38 in 1988.....72 in 1914.....1.08 in 1996

91 in 1939.....59 in 1992.....39 in 1979.....72 in 1871.....1.00 in 1986

90 in 2012.....60 in 1997.....40 in 1983.....71 in 1911.....0.80 in 1981

90 in 1914.....61 in 1949.....40 in 1925.....71 in 1873.....0.73 in 1909

89 in 2010.....61 in 1925.....41 in 1992.....70 in 2012.....0.72 in 1956

89 in 1967.....62 in 1946.....42 in 1886.....69 in 2010.....0.70 in 1926

89 in 1953.....62 in 1940.....43 in 1924.....69 in 1939.....0.70 in 1880

89 in 1941.....62 in 1928.....44 in 1993.....69 in 1916.....0.66 in 2001

89 in 1916.....63 in 1983.....45 in 1999.....68 in 1991.....0.59 in 1922

 

Last year: 68...53...0.04

Longterm averages: 75.4...56.2...0.15

[Chicago WX]

Indianapolis - Historical Memorial Day Top 20 rankings.

 

 

*other years not listed with same value

[IWXwx]

An inch and a half of rain and 42°/37° on Memorial day....Yuck.

[Chicago WX]

May 27 almanac for Indianapolis

 

High max temp...low max temp...low min temp...high min temp...high precip

 

94 in 1911.....57 in 1902.....31 in 1961.....73 in 1941.....1.62 in 2000

91 in 2012.....58 in 1915.....40 in 1999.....73 in 1871.....1.40 in 1956

90 in 1978.....58 in 1907.....40 in 1907.....72 in 1918.....1.40 in 1929

90 in 1941.....59 in 1927.....40 in 1895.....72 in 1914.....1.30 in 1888

90 in 1914.....59 in 1901.....41 in 1983.....71 in 1911.....1.19 in 1981

89 in 2010.....61 in 2011.....41 in 1971.....70 in 2012.....1.01 in 1996

89 in 1967.....61 in 1996.....41 in 1902.....70 in 1955.....0.86 in 1906

89 in 1944.....61 in 1992.....42 in 1992.....70 in 1939.....0.80 in 1985

89 in 1871.....61 in 1957.....43 in 1910.....69 in 1921.....0.72 in 1963

88 in 1987.....61 in 1951.....43 in 1891.....69 in 1874.....0.67 in 1924

 

Last year: 81...56...0.32

Longterm averages: 76.0...56.2...0.14

[Chicago WX]

May 28 almanac for Indianapolis

 

High max temp...low max temp...low min temp...high min temp...high precip

 

96 in 1911.....53 in 1901.....39 in 1907.....72 in 2012.....1.50 in 1912

92 in 2012.....58 in 1932.....41 in 1894.....72 in 1941.....1.26 in 1900

91 in 1914.....59 in 1968.....42 in 1965.....72 in 1874.....1.18 in 1955

90 in 1978.....59 in 1917.....42 in 1902.....72 in 1871.....1.01 in 1888

90 in 1941.....60 in 1997.....43 in 1984.....71 in 1914.....0.81 in 2002

89 in 2006.....61 in 1891.....43 in 1971.....69 in 1918.....0.80 in 1967

89 in 1987.....62 in 1964.....43 in 1961.....69 in 1875.....0.62 in 1901

89 in 1977.....62 in 1928.....44 in 2001.....68 in 2006.....0.60 in 1956

89 in 1918.....62 in 1907.....44 in 1992.....68 in 1939.....0.52 in 1882

89 in 1895.....62 in 1902.....44 in 1906.....68 in 1929.....0.48 in 1976

 

Last year: 82...62...0.00

Longterm averages: 75.8...56.0...0.11

[Chicago WX]

May 29 almanac for Indianapolis

 

High max temp...low max temp...low min temp...high min temp...high precip

 

93 in 1895.....56 in 1984.....36 in 1965.....73 in 1874.....2.19 in 1880

91 in 1942.....59 in 1891.....41 in 1884.....73 in 1871.....1.20 in 1900

90 in 1987.....60 in 1965.....42 in 1964.....72 in 1914.....1.18 in 1982

90 in 1977.....61 in 1968.....42 in 1947.....71 in 1941.....1.18 in 1889

90 in 1969.....61 in 1901.....42 in 1930.....70 in 2013.....0.88 in 1924

90 in 1941.....61 in 1889.....42 in 1924.....70 in 1942.....0.77 in 1885

90 in 1919.....62 in 1995.....43 in 1984.....70 in 1931.....0.74 in 1899

89 in 2006.....63 in 1992.....43 in 1971.....69 in 2011.....0.71 in 1947

89 in 1978.....63 in 1924.....43 in 1958.....69 in 2006.....0.68 in 1905

89 in 1959.....64 in 1930.....44 in 1979.....69 in 1991.....0.66 in 1954

 

Last year: 85...70...0.00

Longterm averages: 76.8...56.8...0.11

[Chicago WX]

May 30 almanac for Indianapolis

 

High max temp...low max temp...low min temp...high min temp...high precip

 

94 in 1895.....42 in 1889.....37 in 1947.....74 in 1942.....3.80 in 2004

91 in 1953.....58 in 1915.....37 in 1889.....74 in 1874.....1.49 in 1889

91 in 1942.....59 in 1967.....40 in 1966.....73 in 1929.....0.95 in 1904

91 in 1937.....61 in 1992.....40 in 1924.....72 in 1991.....0.93 in 1887

91 in 1919.....61 in 1983.....42 in 1984.....71 in 2013.....0.81 in 2008

90 in 2011.....61 in 1901.....42 in 1961.....71 in 1918.....0.69 in 1943

89 in 2010.....62 in 1930.....45 in 1972.....71 in 1871.....0.63 in 1972

89 in 1988.....62 in 1894.....45 in 1930.....70 in 1919.....0.61 in 2009

89 in 1929.....63 in 1947.....46 in 1996.....70 in 1881.....0.61 in 1892

88 in 2006.....64 in 1873.....46 in 1983.....69 in 2011.....0.56 in 1976

 

Last year: 86...71...0.00

Longterm averages: 77.1...57.6...0.13

[Chicago WX]

May 31 almanac for Indianapolis

 

High max temp...low max temp...low min temp...high min temp...high precip

 

96 in 1895.....47 in 1889.....36 in 1889.....73 in 1918.....2.61 in 1874

94 in 1934.....58 in 1894.....40 in 1966.....72 in 2011.....2.12 in 1892

93 in 1988.....59 in 1972.....40 in 1894.....72 in 1989.....1.81 in 1881

92 in 1953.....59 in 1940.....41 in 1955.....72 in 1937.....1.19 in 1997

92 in 1937.....60 in 1910.....42 in 1984.....72 in 1895.....0.91 in 1917

91 in 1921.....60 in 1904.....43 in 1972.....71 in 1942.....0.76 in 1957

91 in 1919.....61 in 1997.....44 in 1993.....71 in 1919.....0.76 in 1900

90 in 2011.....61 in 1983.....44 in 1973.....71 in 1871.....0.63 in 1926

90 in 1985.....63 in 2001.....44 in 1897.....70 in 1941.....0.59 in 1982

90 in 1977.....63 in 1975.....45 in 2003.....70 in 1876.....0.57 in 1975

 

Last year: 77...63...0.50

Longterm averages: 77.8...57.8...0.14

[Chicago WX]

EVANSVILLE SPRING 2014 STATISTICS

 

MARCH

Average temperature: 41.8º -4.2º

Precipitation: 2.85" -1.39"

Snowfall: 2.6" +1.3"

 

APRIL

Average temperature: 58.0º +1.9º

Precipitation: 10.97" +6.60"

Snowfall: 0.0" -0.1"

 

MAY

Average temperature: 68.4º +2.7º

Precipitation: 3.72" -1.64"

Snowfall: 0.0" 0.0"

 

SPRING

Average temperature: 56.1º -0.1º

Precipitation: 17.54" +3.57"

Snowfall: 2.6"+1.2"

 

 

FORT WAYNE 2014 SPRING STATISTICS

 

MARCH

Average temperature: 30.3º -8.1º

Precipitation: 1.90" -0.81"

Snowfall: 13.2" +9.1"

 

APRIL

Average temperature: 49.8º -0.2º

Precipitation: 3.99" +0.47"

Snowfall: 1.1" +0.1"

 

MAY

Average temperature: 61.5º +1.1º

Precipitation: 4.57" +0.30"

Snowfall: 0.0" 0.0"

 

SPRING

Average temperature: 47.2º -2.6º

Precipitation: 10.46" -0.04"

Snowfall: 14.3" +9.2"

 

 

INDIANAPOLIS 2014 SPRING STATISTICS

 

MARCH

Average temperature: 35.7º -6.5º

Precipitation: 2.38" -1.18"

Snowfall: 3.1" +0.5"

 

APRIL

Average temperature: 53.0º 0.0º

Precipitation: 5.39" +1.58"

Snowfall: 0.3" +0.1"

 

MAY

Average temperature: 63.1º +0.4º

Precipitation: 4.87" -0.18"

Snowfall: T 0.0"

 

SPRING

Average temperature: 50.6º -2.2º

Precipitation: 12.64" +0.25"

Snowfall: 3.4" +0.6"

 

 

SOUTH BEND 2014 SPRING STATISTICS

 

MARCH

Average temperature: 30.0º -7.5º

Precipitation: 1.69" -0.73"

Snowfall: NA

 

APRIL

Average temperature: 49.2º +0.2º

Precipitation: 2.35" -0.88"

Snowfall: 1.1" -0.3"

 

MAY

Average temperature: 60.7º +1.4º

Precipitation: 5.10" +1.27"

Snowfall: 0.0" 0.0"

 

SPRING

Average temperature: 46.6º -2.3º

Precipitation: 9.14" -0.32"

Snowfall: NA

[Chicago WX]

Not a spring statistic exactly, but here's where January-May 2014 ranks in average temperature for Indianapolis (records since 1871).

 

Top 10 coolest January-May mean average temperatures

1) 38.2º in 1885

1) 38.2º in 1875

3) 38.4º in 1912

4) 38.5º in 1979

4) 38.5º in 1978

6) 39.1º in 2014

7) 39.2º in 1940

8) 39.3º in 1904

9) 39.4º in 1963

10) 39.8º in 1924

 

Longterm January-May mean average temperature: 43.3º

 

January-May 2014 is tied for the 3rd coldest in recorded history for Fort Wayne (records since 1897).

 

1) 33.7º in 1978

2) 35.0º in 1912

3) 35.5º in 2014

3) 35.5º in 1940

5) 36.4º in 1979

6) 36.7º in 1963

6) 36.7º in 1924

8) 36.8º in 1982

8) 36.8º in 1980

10) 37.0º in 1947

10) 37.0º in 1917

 

Longterm January-May mean average temperature: 40.0º 

 

Values are average of all days. May differ from NCDC method.