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As we head towards summer, I wanted to throw up a thread regarding summers in Indianapolis. In here I will ramble about various facts and what not, and follow the progress of summer 2013 for IND.

 

First up, the past three summers at IND. All three are in the top 10 all time hottest summers (records since 1871).

 

1) 78.6º in 1874

2) 78.5º in 1936

3) 78.2º in 1934

4) 78.1º in 2010

5) 77.8º in 2012

6) 77.6º in 2011

7) 77.3º in 1983

7) 77.3º in 1872

9) 77.2º in 1873

10) 76.9º in 1901

 

Daily records broken or tied are highlighted in the below chart.

 

 

 

 

 

 

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Thanks for the statistics, Chicago_Wx.

I lived in VA for the majority of my life before I lived in Indianapolis from 1994 to 2000.

I found the summers in Indy to be a lot nicer (in my personal opinion anyway) than in VA. Yeah, it can get just as hot (or hotter) as in VA, but it only stays that way a week or so at a time vs. the weeks on end with lows never falling out of the 70's in VA. My main weather complaint about Indy was lack of snow in winter. Lots of mixed precip but seldom just snow.

Now that I live in Buffalo. Summers are nice here. Yet even here the past few summers have been a bit uncomfortable. I have a friend who hosts server rack space in Rochester and was saying how cooling costs the last 2 summers were the highest ever. Usually temperatures drop into the low 60s at night here even in July, but we've had plenty of lows above 70 the past 3 years. Of course, downslope flow from mountains to the southwest of here does contribute late in the season (once lakes are warmed up).

This season is definitely starting different from the past 3 years here though. We had snow showers at higher elevations nearby yesterday - something we have not seen in May for a few years. My gut feeling is that we don't see the extremes of heat of the past summer either here or in Indy this year.

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Top 10 warmest Mays and the following average individual monthly summer temps (June...July...August) for Indianapolis.

 

May 1896: 70.8º.....72.3º...75.9º...74.7º

May 1977: 70.6º.....71.2º...78.0º...74.0º

May 1881: 69.7º.....72.0º...78.4º...78.0º

May 1962: 69.2º.....73.2º...73.3º...72.4º

May 1918: 68.8º.....71.2º...73.0º...78.4º

May 2012: 68.8º.....74.6º...84.0º...74.9º

May 1911: 68.6º.....74.5º...76.0º...74.2º

May 1982: 68.6º.....67.8º...76.2º...71.7º

May 1965: 68.3º.....71.7º...72.9º...71.1º

May 1991: 68.3º.....74.6º...76.7º...75.2º

 

Top 10 (11 with a tie) coldest Mays and the following average individual monthly summer temps (June...July...August) for Indianapolis.

 

May 1924: 56.0º.....70.4º...72.9º...73.4º

May 1917: 56.0º.....68.8º...74.0º...72.5º

May 1961: 56.4º.....67.9º...73.4º...71.4º

May 1945: 56.4º.....68.1º...72.4º...72.1º

May 1997: 56.7º.....69.6º...75.4º...71.6º

May 1907: 56.8º.....68.0º...75.1º...72.4º

May 1910: 57.5º.....69.4º...75.3º...72.8º

May 1882: 57.8º.....71.4º...72.1º...73.6º

May 1954: 57.9º.....75.5º...77.8º...73.6º

May 1935: 58.0º.....68.6º...78.6º...75.6º

May 1897: 58.0º.....70.0º...77.0º...72.3º

 

Small sample size with both, but the top warmest yield a mixed bag for summer. On the other hand, a cold May tends to a decent predictor of the upcoming summer, sans 1935 and 1954.

 

Blue highlighted means cooler than normal, red warmer than normal, and black is around normal (1º either way). 

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  • 2 weeks later...

2013 was the 16th wettest January-May period in recorded history for Indianapolis. So, I took the top 50 such periods and rolled them forward through Summer. Strict above/below versus longterm averages tilts the summer precipitation to below normal, 28 versus 21 (obviously not counting 2013 yet). I highlighted the recent years, since 2000, on the list as well. 2002, 2005, and 2011 had Summers turn dry...2004, 2006, 2008, and 2009 Summers remained wet.  

 

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Along the lines of what Hoosier was discussing in the June thread...here are the years and months where Indianapolis has hit 100º+ and various precipitation totals (Jan-May, Spring, Summer, and monthly). Data is from 1897 to current. Bottom line is dry certainly dominates, but there are some wet times that had 100º+ temps as well.

 

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Above normal Mays and the following Summer in Indianapolis, based off the median May temp of 63.1º (+0.5 to -0.5º considered normal range). I highlighted the Mays that were within one degree, either way, of 2013.  

 

 

Highlighted orange category Summer monthly temps:

June temps: 11 above...10 below...3 normal

July temps: 10 above...9 below...5 normal

August temps: 9 above...9 below...6 normal

 

In other words, it's a crapshoot via this "method".

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  • 2 weeks later...

Dates of the first 90º temperature for Indianapolis, since 1980. June is the typical month for the first such occurrence. 2013 has yet to record a 90º temperature at IND. Pretty much half of the years (16 of 33) below had their first 90º of the year before June 15.

 

2013: ?

2012: May 26

2011: May 30

2010: June 11

2009: June 19

2008: June 8

2007: June 7

2006: July 2

2005: June 5

2004: No 90º days

2003: July 3

2002: June 4

2001: June 14

2000: August 9

1999: June 8

1998: June 24

1997: July 2

1996: June 28

1995: June 18

1994: May 23

1993: July 3

1992: June 17

1991: June 2

1990: July 4

1989: June 23

1988: May 31

1987: May 29

1986: June 20

1985: May 31

1984: June 12

1983: June 23

1982: July 5

1981: June 14

1980: June 26

 

Earliest: May 23, 1994

Latest: August 9, 2000 (2004 had no 90º days)

 

May: 6 times

June: 19 times

July: 6 times

August: 1 time

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Number of 90º+ days in June for Indianapolis, since 1897 (summers that ended up with 25 or more days highlighted in red):

 

18 days in 1934, 1954

17 days in 1933

16 days in 1988

15 days in 1952

13 days in 1913, 1914

12 days in 1953

11 days in 1994, 2012

10 days in 1910

9 days in 1931, 1941, 1943, 1963, 1964, 1966

8 days in 1911, 1919, 1942, 1944

7 days in 1920, 1921, 1936, 1978, 1984, 2005

6 days in 1899, 1939, 1962, 1969, 1987

5 days in 1901, 1925, 1949, 1956, 1959, 1967, 1971, 1991, 1998, 2007, 2009, 2010

4 days in 1897, 1940, 1968, 1981, 1983, 1986, 2002, 2011

3 days in 1898, 1902, 1905, 1908, 1922, 1930, 1945, 1946, 1951, 1989, 1995, 1996, 1999

2 days in 1906, 1918, 1924, 1926, 1927, 1935, 1948, 1957, 1970, 1973, 1977, 1980, 1985

1 day in 1900, 1907, 1917, 1929, 1932, 1947, 1950, 1965, 1972, 1975, 1976, 1992, 2001, 2008

0 days in 1903, 1904, 1909, 1912, 1915, 1916, 1928, 1937, 1938, 1955, 1958, 1960, 1961, 1974, 1979, 1982, 1990, 1993, 1997, 2000, 2003, 2004, 2006, 2013

 

2013 currently has zero, but that's gonna change quickly.

 

Decade averages:

1900's: 1.8 days

1910's: 5.5 days

1920's: 3.6 days

1930's: 6.3 days

1940's: 5.2 days

1950's: 6.1 days

1960's: 4.9 days

1970's: 2.1 days

1980's: 4.8 days

1990's: 3.1 days

2000's: 2.3 days

 

1897-2012 average: 4.3 days 

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  • 2 weeks later...

No 90+ temperatures for Indianapolis this year, through the end of June. The other years that has happened (since 1897):

 

1903, 1904, 1909, 1912, 1915, 1916, 1928, 1938, 1955, 1958, 1960, 1961, 1974, 1979, 1982, 1990, 1993, 1997, 2000, 2003, 2004, 2006

 

Date of the first 90+ temperature for all of the years listed:

 

July 1, 1903

July 1, 1909

 

July 2, 1916

July 2, 1974

July 2, 1997

July 2, 2006

 

July 3, 1928

July 3, 1955

July 3, 1993

July 3, 2003

 

July 4, 1958

July 4, 1990

 

July 5, 1982

 

July 7, 1938

 

July 13, 1915

 

July 15, 1912

 

July 16, 1904

 

July 30, 1961

 

August 6, 1979

 

August 9, 2000

 

September 1, 1960

 

None - 2004

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June 2013 statistics for Indianapolis

 

Tied for 71st warmest in recorded history (since 1871)

69th driest in recorded history (since 1871)

 

Average temperature: 72.0º 0.0º

Average maximum temperature: 81.2º -0.7º

Average minimum temperature: 62.7º +0.6º

 

Highest maximum temperature: 89º on the 22nd, 25th, and 27th

Lowest maximum temperature: 68º on the 3rd

Highest minimum temperature: 70º on the 22nd

Lowest minimum temperature: 48º on the 3rd

 

Maximum temperatures days

90+: 0 (normal: 2.7)

80-89: 19

70-79: 10

60-69: 1

 

Minimum temperature days

80+: 0

70-79: 1

60-69: 24

50-59: 4

40-49: 1

 

Total precipitation: 3.66" -0.59"

 

Greatest 24 hour amount: 1.43" on the 23rd

 

Rainfall days

T or more: 15

0.01" or more: 10 (normal: 11.1)

0.10" or more: 8 (normal: 7.4)

0.50" or more: 5 (normal: 3.0)

1.00" or more: 1 (normal: 1.1)

 

No daily or monthly temperature or precipitation records were broken or tied this month.

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Past Junes that were within 0.5 degrees of this year's average temperature of 72.0º...and then what followed for each year in July and August.  

 

72.4 in 1966.....79.2...73.2

72.3 in 1896.....75.9...74.7

72.3 in 1968.....75.3...74.5

72.1 in 1909.....72.2...74.9

72.1 in 1956.....72.9...73.0

72.1 in 1957.....75.4...73.4

72.1 in 1996.....73.1...74.9

72.0 in 1881.....78.4...78.0

72.0 in 1936.....82.8...80.5

72.0 in 2013.....TBD...TBD

71.8 in 1983.....79.7...80.1

71.7 in 1965.....72.9...71.1

71.6 in 1876.....77.2...74.5

71.6 in 1905.....73.8...74.6

71.6 in 1930.....78.0...75.4

71.5 in 1875.....76.0...69.8

71.5 in 1970.....75.2...74.2

71.5 in 1975.....73.5...76.1

71.5 in 1998.....74.9...75.3

 

Longterm median values:

72.0.................75.7...74.1

 

Interesting that the other two years that were at 72.0º for June turned into absolute scorchers in July and August. Of course the overall story of 1936 was a bit different than this year's version. 1983 also lurks closely. Otherwise, the theme of the entire list is a crapshoot...not that this "method" holds much water anyway.

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Past Junes that were within 0.5 degrees of this year's average temperature of 72.0º...and then what followed for each year in July and August.

72.4 in 1966.....79.2...73.2

72.3 in 1896.....75.9...74.7

72.3 in 1968.....75.3...74.5

72.1 in 1909.....72.2...74.9

72.1 in 1956.....72.9...73.0

72.1 in 1957.....75.4...73.4

72.1 in 1996.....73.1...74.9

72.0 in 1881.....78.4...78.0

72.0 in 1936.....82.8...80.5

72.0 in 2013.....TBD...TBD

71.8 in 1983.....79.7...80.1

71.7 in 1965.....72.9...71.1

71.6 in 1876.....77.2...74.5

71.6 in 1905.....73.8...74.6

71.6 in 1930.....78.0...75.4

71.5 in 1875.....76.0...69.8

71.5 in 1970.....75.2...74.2

71.5 in 1975.....73.5...76.1

71.5 in 1998.....74.9...75.3

Longterm median values:

72.0.................75.7...74.1

Interesting that the other two years that were at 72.0º for June turned into absolute scorchers in July and August. Of course the overall story of 1936 was a bit different than this year's version. 1983 also lurks closely. Otherwise, the theme of the entire list is a crapshoot...not that this "method" holds much water anyway.

I think Chad was going with a backloaded summer in terms of heat but nothing too extreme.

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I think Chad was going with a backloaded summer in terms of heat but nothing too extreme.

 

Funny you say that...you sent me this via PM in February. But maybe things have changed since. Anyway, 0-1 on temps. :guitar:

 

Here's Chad's forecast for JJA:

 

June:

Temperatures: Above-Normal (+1.8)

Max Temperature: 96

Min Temperature: 48

Precipitation: Above-Normal (+1.17″)

July:

Temperatures: Above-Normal (+1.7)

Max Temperature: 97

Min Temperature: 54

Precipitation: Above-Normal (+0.63″)

August:

Temperatures: Above-Normal (+1.4)

Max Temperature: 96

Min Temperature: 52

Precipitation: Normal (+0.21″)

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Funny you say that...you sent me this via PM in February. But maybe things have changed since. Anyway, 0-1 on temps. :guitar:

Here's Chad's forecast for JJA:

June:

Temperatures: Above-Normal (+1.8)

Max Temperature: 96

Min Temperature: 48

Precipitation: Above-Normal (+1.17″)

July:

Temperatures: Above-Normal (+1.7)

Max Temperature: 97

Min Temperature: 54

Precipitation: Above-Normal (+0.63″)

August:

Temperatures: Above-Normal (+1.4)

Max Temperature: 96

Min Temperature: 52

Precipitation: Normal (+0.21″)

Hmm, guess I misremembered. Good job finding that in that ridiculously long PM we've got going.

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The first real intense (and greatest) heat wave for Indianapolis last summer began on June 28. A high temperature comparison between last year and this year in the June 28 - July 7 time period.

 

Date: 2012 high temp.....2013 high temp.

 

June 28: 104º.....85º

June 29: 103º.....77º

June 30: 97º.....76º

July 1: 95º.....72º

July 2: 98º.....78º

July 3: 98º.....80º

July 4: 102º.....77º

July 5: 103º.....80º

July 6: 105º.....73º

July 7: 105º.....81º forecasted 

 

June 28 - July 7, 2012 average: 101.0º

June 28 - July 7, 2013 average: 77.9º

June 28 - July 7 normal average: 85.0º

 

Red highlighted number indicates daily record broken, orange indicates daily record tied.

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As well, last summer up until this point, had a severe lack of rainfall at IND. June 2012 was the driest on record with 0.09", and the second driest month on record. The first six days of July 2012 had no measurable rainfall as well. 2013 has turned back to a more normal precipitation pattern, though the airport is drier than most surrounding areas. Comparisons between the two years in the June 1 - July 6 period below.

 

June 1 - July 6, 2012 total: 0.09"

June 1 - July 6, 2013 total: 4.85"

June 1 - July 6 normal total: 5.18"

 

Element: 2012 days.....2013 days

Days with a T or more: 8.....20

Days with 0.01" or more: 3.....14

Days with 0.10" or more: 0.....11

Days with 0.50" or more: 0.....3

Days with 1.00" or more: 0.....1

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IND still looking for the first 90º temp of the year. Below are the dates in play, since 1897, of the latest one for Indianapolis.  

 

July 13, 1915

July 15, 1912

July 16, 1904

July 30, 1961

August 6, 1979

August 9, 2000

September 1, 1960

2004 - None

 

For comparison...through July 11 of last year, 2012 already had 26 days of 90º+ temps, with 6 of them being 100º+

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Today will be the first 90º day of the year for Indianapolis. Not counting 2004 which had no 90º days, this will tie for the 5th latest since 1897.


 


July 16, 1904


July 30, 1961


August 6, 1979


August 9, 2000


September 1, 1960


2004 - None


 


Again for comparison, 2012 through July 16 had 30 days of 90º+ temps, 6 of them being 100º+.


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Number of 90º+ days in July for Indianapolis, since 1897.

 

28 days in 2012

25 days in 1901

22 days in 1983

21 days in 1916, 1921

20 days in 1919, 2011

19 days in 1934, 1936, 1966

18 days in 1914

17 days in 1913, 1954, 1980

16 days in 1988, 1999

15 days in 1930, 1933, 1940, 1952, 2002

14 days in 1931, 1944, 1977

13 days in 1935, 1941, 1942, 1949, 1955

12 days in 1903, 1953

11 days in 1902, 1911, 1968, 2010

10 days in 1897, 1898, 1899, 1926, 1932, 1937, 1970, 1991, 1993, 1995, 1997

9 days in 1908, 1974, 1986

8 days in 1923, 1928, 1943, 1972, 1978, 2006

7 days in 1918, 1938, 1946, 1964, 1987

6 days in 1907, 1925, 1929, 1939, 1945, 1981, 1989

5 days in 1905, 1951, 1969, 1976, 1990, 1994, 1996, 2005

4 days in 1900, 1909, 1915, 1917, 1920, 1922, 1927, 1948, 1956, 1957, 1959, 1963, 1973, 1982, 1984, 2001

3 days in 1904, 1924, 1962, 1965, 1985, 2003, 2007

2 days in 1910, 1912, 1961, 1967, 1971, 1975, 1998

1 day in 1947, 1958, 2008

0 days in 1906, 1950, 1960, 1979, 1992, 2000, 2004, 2009

 

2013 has 4 days, through July 19.

 

Decade averages:

1900's: 7.9 days

1910's: 10.6 days

1920's: 7.4 days

1930's: 12.8 days

1940's: 9.4 days

1950's: 7.5 days

1960's: 5.6 days

1970's: 6.2 days

1980's: 9.4 days

1990's: 7.3 days

2000's: 3.9 days

 

1897-2012 average: 8.2 days

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80º+ minimum temperatures in recorded history for Indianapolis, 1871 to present.

 

1871-1942: official site locations in downtown Indianapolis

1943-present: official site location at the airport

 

June 8, 1874: 81

June 23, 1873: 81

June 23, 1874: 80

June 24, 1873: 82

June 24, 1873: 82

June 27, 1931: 80

June 28, 1874: 85 (highest on record)

June 28, 1913: 80

June 28, 1934: 80

June 30, 1872: 80

 

July 1, 1872: 81

July 1, 1931: 80

July 7, 1874: 84

July 7, 1881: 80

July 7, 2012: 81

July 8, 1881: 80

July 8, 1936: 80

July 9, 1881: 82

July 10, 1881: 82

July 10, 1936: 82

July 11, 1881: 80

July 11, 1936: 80

July 12, 1881: 80

July 12, 1936: 81

July 13, 1936: 81

July 14, 1873: 81

July 14, 1936: 81

July 15, 1932: 80

July 21, 1934: 80

July 24, 1892: 81

July 25, 1934: 82

 

August 4, 1930: 82

August 5, 1881: 80

August 6, 1918: 82

August 11, 1874: 80

August 12, 1874: 81

August 19, 1936: 82

August 21, 1936: 80

August 22, 1936: 81

August 23, 1936: 80

August 25, 1872: 80

August 30, 1881: 80

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All sub 70º maximum temperatures in July for Indianapolis (records since 1871).

 

Coldest was 64º on July 13, 1990.

 

1909, 1990, 1992, 2004, and 2009 all had two days on this list. 

 

July 1: 68º in 1924...69º in 2009

July 5: 68º in 1909

July 6: 66º in 1909

July 7: 68º in 1992

July 8: 69º in 1891

July 12: 67º in 1990

July 13: 64º in 1990...67º in 1975...68º in 1897

July 20: 66º in 1958

July 22: 68º in 2009

July 25: 67º in 2004

July 26: 68º in 2004

July 30: 69º in 1918...69º in 1925

July 31: 69º in 1992

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Coldest minimum temperatures in July for Indianapolis (since 1871).

 

46º on 7/21/1944, 7/23/1947

 

48º on 7/1/1885, 7/4/1968, 7/6/2001, 7/14/1975

 

49º on 7/3/1968, 7/5/1972, 7/13/1976, 7/16/1945, 7/20/1947, 7/22/1947, 7/31/1895

 

50º on 7/1/1892, 7/2/1904, 7/4/1927, 7/5/1997, 7/5/1979, 7/6/1972, 7/6/1970, 7/10/1963, 7/10/1985, 7/14/1950, 7/16/1967, 7/19/1984, 7/20/1929, 7/21/1970, 7/31/1971

 

51º on 7/1/1937, 7/2/2001, 7/3/1924, 7/4/1963, 7/8/1984, 7/10/1962, 7/13/1975, 7/13/1940, 7/14/1967, 7/15/1967, 7/17/1976, 7/18/1976, 7/18/1886, 7/25/1911, 7/26/1911, 7/26/1972, 7/28/2013, 7/29/1881, 7/30/1965

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Does this mean six months from now we will be taking about 80 degree temps at the end of January? I hope so.

 

Well, there's only been 4 days in recorded history that have broken 70º in January (last time was Jan 24, 1967 with a 70º)...so you might have to lower your expectations a touch. :D

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