September Temperature Statistics

The following table lists the daily mean and record temperatures (F) at Brookhaven National Laboratory for each day of the month. The period covered is from 1949 to 2006.

 
      Maximum   Minimum
Day Mean   Average High Year   Average Low Year
1 68.0   78.4 92.0 1953   57.6 41.0 1971
2 67.2   77.6 100.0 1953   56.9 41.0 1991
3 67.1   77.5 93.0 1953   56.7 37.5 1958
4 67.3   78.0 91.0 1985   56.7 40.0 1987
5 66.6   77.4 91.5 1985   55.9 40.0 1965
6 66.1   77.6 91.5 1983   54.5 37.0 1962
7 65.6   77.3 90.0 1983   53.9 36.0 1984
8 64.8   76.2 86.0 1985   53.5 36.0 1952
9 64.7   76.1 88.0 1959, 2002   53.3 33.0 1952
10 65.9   76.9 91.0 1983   54.8 34.5 1975
11 64.6   75.8 96.0 1983   53.5 37.5 1972
12 64.0   75.4 92.5 2005   52.6 34.0 1958
13 64.3   75.3 91.5 2005   53.3 35.0 1954
14 64.5   74.6 88.0 1972   54.4 34.0 1975
15 63.0   73.1 83.0 2005   52.9 33.0 1975
16 63.1   73.3 86.0 1991   52.9 31.5 1964
17 62.2   72.4 87.5 1991   52.1 34.0 1950
18 62.2   73.0 84.5 1965   51.3 29.0 1959
19 62.0   73.2 90.0 1983   50.7 30.0 1956
20 61.7   71.8 90.0 1983   51.5 33.5 1979
21 61.9   71.9 85.0 1980   51.8 30.0 1956
22 61.2   71.5 90.5 1980   51.0 28.0 1962
23 60.7   70.6 92.0 1970   50.8 28.0 1953
24 58.3   69.4 86.5 1970   47.1 25.0 1953
25 57.8   69.0 84.0 1984   46.6 29.5 1963
26 59.4   70.5 85.5 1970   48.3 32.0 1963
27 58.9   70.1 86.5 1998   47.7 28.0 1978
28 59.0   69.3 80.0 1959   48.8 30.0 1965
29 57.7   68.0 80.5 1959   47.5 29.5 1957
30 56.8   67.9 82.0 1986   45.6 27.0 1951
Mean 62.9   73.6 88.5     52.1 33.2  
 

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Last revised on: Wednesday August 22, 2012.