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The Last Days Of Summer: September 2015 DISCUSSION/OBS


UnionWeatherWx

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1970 was an endless summer...A five day heat spell from the 22nd-26th produced four 90+ days...the 94 on the 22nd tied the hottest temp of the year...1914 had its hottest temperature September 22nd...1895 on September 23rd...

Yikes.

Those were the days before global warming.

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September stats for KNYC...
September decade averages...
Decade...ave temp...rainfall...ave max...ave min...
1870's......65.3......3.41"............................
1880's......66.2......4.18"......86.5......46.1
1890's......67.7......3.38"......89.6......47.0
1900's......68.1......3.84"......86.8......48.4
1910's......66.8......3.09"......89.5......45.6
1920's......67.8......3.54"......91.1......47.2
1930's......68.7......5.15"......90.0......47.9
1940's......68.8......3.70"......91.2......45.5
1950's......68.3......2.36"......89.9......45.6
1960's......67.7......3.85"......90.2......47.2
1970's......68.3......4.73"......90.1......47.1
1980's......68.6......3.58"......90.3......47.5
1990's......68.0......4.18"......88.7......47.6
2000's......68.6......4.91"......86.5......49.7

2010's.....69.5.......4.32"......92.2......51.4

1870-
2009........67.8......3.85"......89.2......47.1
1980-
2009........68.4......4.22"......88.5......48.3

Warmest..........Coolest..........Wettest............Driest...
73.6 in 1961...60.8 in 1871...16.85" in 1882...0.21" in 1884
73.3 in 1881...61.8 in 1887...11.96" in 1934...0.29" in 1914
73.3 in 2005...62.6 in 1883...11.51" in 2004...0.41" in 1885
72.3 in 1931...62.8 in 1888...10.30" in 1944...0.48" in 2005
72.3 in 1959...63.1 in 1963...10.09" in 1933...0.51" in 1941
72.2 in 1891...63.3 in 1893.....9.39" in 2011...0.60" in 1948
72.1 in 1921...63.3 in 1879.....9.32" in 1975...0.62" in 1895
72.0 in 1930...63.6 in 1917.....9.02" in 1938...0.70" in 1951
71.8 in 1983...63.7 in 1876.....8.82" in 1966...0.97" in 1881
71.8 in 1884...63.9 in 1918.....8.81" in 1999...1.10" in 1953

Hottest temp......Coolest temp...
102 9/02/1953....39 9/30/1912
101 9/07/1881....40 9/30/1888
..99 9/03/1929....40 9/25/1887
..99 9/11/1931....40 9/24/1963
..99 9/11/1983....40 9/21/1871

Warmest monthly minimum...
57 in 1910
56 in 1921
54 in 2002
54 in 1982
54 in 1960
54 in 1891
54 in 2010
Coldest monthly max...
79 in 1883
80 in 1888
80 in 2003
81 in 1908
81 in 1918
81 in 1975
Warmest daily minimum...
79 9/07/1881
79 9/02/1898
78 9/03/1898
78 9/04/1898
78 9/11/1983
78 9/02/2010
Coolest daily max...
52 9/30/1888
52 9/24/1887
53 9/19/1875
53 9/24/1950
53 9/25/1879
53 9/28/1984
53 9/29/1888

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Pretty impressive warm departures showing up in the forecast for the first week

to possibly 10 days of September. It looks like this will be the warmest part

of the month as the models move to flatten the big ridge out during the second

week of September.

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