Fort Smith September Climate Data

     |-----Normals 1991-2020------| |--------- Record Temperatures ---------|
     Temperature   Precipitation     Hi        Lo        Hi        Lo
Day  Mx/Mn  Mean  Day  Month  Year   Max Year  Max Year  Min Year  Min Year    Day

 1   91/68   80  0.13  0.13  31.68   108 2000  68 1882 (82)1922  54 1893    1
 2   91/68   80  0.14  0.27  31.82  (109)2000  71 2009  81 1936  51 1882    2
 3   90/68   79  0.13  0.40  31.95  (109)2000  71 1940  80 1936  50 1952    3
 4   90/67   79  0.14  0.54  32.09  (109)1998  70 1967  81 1939  48 1891    4
 5   90/67   79  0.14  0.68  32.23   104*1998  70 1918  77 1939  51 1953    5

 6   89/67   78  0.13  0.81  32.36   106 1947  68 1918  79 1936  47 1974    6
 7   89/66   78  0.14  0.95  32.50   105 1947  68 1882  78 1907  51 2011    7
 8   89/66   78  0.14  1.09  32.64   102 1925  70 1951  77 1941  49 1956    8
 9   89/66   78  0.14  1.23  32.78   100 1939  68 1907  75 1939  48 1956    9
10   88/65   77  0.14  1.37  32.92   102 1909  71 1966  76 1939  46 1976   10

11   88/65   77  0.14  1.51  33.06   104 1909  68 1892  77 1936  42 1976   11
12   88/65   77  0.14  1.65  33.20   100 1930  68 1929  78 1936  47 1940   12
13   87/64   76  0.15  1.80  33.35   100 1980  64 1974  76 2008  42 1902   13
14   87/64   76  0.14  1.94  33.49   100*2000  62 1949  77 1915  44 1902   14
15   87/64   76  0.14  2.08  33.63   101 1939  61 1975  77 1936  46 1902   15

16   86/63   75  0.13  2.21  33.76   101 1956  61 2011  78 1939  44 1979   16
17   86/63   75  0.12  2.33  33.88   102 1896  69 1937  75 1921  43 1903   17
18   86/62   74  0.13  2.46  34.01    98 2005  69 1971  78 1942  40 1981   18
19   86/62   74  0.13  2.59  34.14   100*2022  58 1971  75 1978  40 1981   19
20   85/62   74  0.14  2.71  34.26   101 2024  64 1918  79 1954  43 1971   20

21   85/61   73  0.13  2.84  34.39   102 2022  64 1995  76 1931  39 1983   21
22   85/61   73  0.14  2.98  34.53    98*2005  62 1995  75 1945  38 1982   22
23   84/60   72  0.13  3.11  34.66    97 2000  66 1915  75 1945  40 1995   23
24   84/60   72  0.13  3.24  34.79    97*2022  62 1994  73*2007  36 1989   24
25   84/60   72  0.14  3.38  34.93    97*2012  58*2000  73 1933  38 1989   25

26   83/59   71  0.13  3.51  35.06    96 1954 (57)1984  74 1933  40 1982   26
27   83/59   71  0.14  3.65  35.20    98 1954  61 1984  72 1944  38 1942   27
28   83/58   71  0.13  3.78  35.33   104 1953  59 1887  73 1911  39 1967   28
29   82/58   70  0.13  3.91  35.46   100 1953  62 1984  73 1933 (33)1967   29
30   82/57   70  0.13  4.04  35.59    99 1953  60 1920  72 1933  37 1984   30

* Indicates occurrences in previous years     ( ) Indicates monthly extremes

September Monthly Normals 1991-2020:

Normal Max Temperature:   86.5F   Monthly Heating Degree Days:        10
Normal Min Temperature:   63.1F   Season Total Heating Degree Days:   10
Normal Mean Temperature:  74.8F   Monthly Cooling Degree Days:       304
Normal Monthly Rainfall:  4.04"   Season Total Cooling Degree Days: 2087
Normal Monthly Snowfall:   0.0"

September Monthly Records:

Warmest Month:  83.4F in 1939     Wettest Month:  10.49" in 1934
Coolest Month:  65.7F in 1974     Driest Month:    Trace in 2017

(Monthly normals are computed by adding all of the daily mean data and
 then dividing by the number of days in the month)