Monthly Climatological Summary for Sep 2025

Name: OFallon Weather   City: OFallon   State: MO
Elevation: 532 ft  Lat: N 38° 50' 20"   Lon: W 090° 43' 42"

                  Temperature (°F), Rain (in), Wind Speed (mph)

                                      Heat  Cool        Avg
    Mean                              Deg   Deg         Wind                 Dom
Day Temp  High   Time   Low    Time   Days  Days  Rain  Speed High   Time    Dir
----------------------------------------------------------------------------------
01  68.8  78.4   13:10  59.0   06:10   1.4   5.2  0.00   1.4  11.0   15:53   ENE
02  70.6  83.8   15:13  61.3   06:40   0.7   6.3  0.03   1.2  10.0   13:28   NNW
03  72.1  86.8   15:41  58.7   03:03   1.7   8.8  0.00   2.8  22.0   23:38   WNW
04  65.8  76.9   16:27  56.3   07:19   2.4   3.2  0.00   2.3  17.0   00:00   WNW
05  64.8  73.4   13:00  58.8   00:47   2.1   1.9  0.00   3.2  15.0   12:22   WNW
06  65.0  78.0   15:33  48.8   06:54   3.9   3.8  0.00   2.7  18.0   15:10   WNW
07  60.3  74.0   14:50  46.7   07:15   7.3   2.6  0.00   1.8  14.0   12:47   NNE
08  61.0  78.0   16:05  45.1   06:41   7.6   3.7  0.00   1.5  14.0   12:26   SSE
09  64.8  81.9   15:55  49.5   02:43   5.5   5.4  0.00   1.2  15.0   14:25     S
10  73.2  90.6   15:22  57.8   02:41   1.6   9.8  0.00   1.0  11.0   13:53   WNW
11  75.3  91.3   13:54  60.9   06:21   0.7  11.0  0.00   1.2  10.0   13:32   ENE
12  78.0  94.2   15:29  61.4   06:42   0.6  13.6  0.00   1.5  14.0   13:00    SE
13  82.3  99.7   16:14  65.8   06:56   0.0  17.3  0.00   1.6  12.0   10:53   WSW
14  82.9  99.4   15:01  67.6   05:35   0.0  17.9  0.00   1.3  10.0   10:56   NNW
15  80.1  93.5   15:47  69.0   06:40   0.0  15.1  0.00   1.8  14.0   19:58     E
16  77.5  94.0   15:17  64.4   06:09   0.0  12.5  0.00   1.0  12.0   13:31    NE
17  75.5  93.4   15:59  59.4   07:06   0.8  11.3  0.00   1.2  10.0   12:12     E
18  77.2  95.9   15:19  60.9   06:37   0.7  12.8  0.00   1.7  34.0   21:53    NW
19  74.2  88.8   15:07  64.5   07:06   0.0   9.2  0.00   1.8  14.0   12:32    SW
20  72.0  83.1   13:27  63.2   07:09   0.1   7.1  0.04   1.8  16.0   16:05   ESE
21  72.6  90.5   15:09  63.6   04:03   0.1   7.6  0.08   2.4  25.0   18:00    SW
22  71.8  82.3   15:30  66.1   07:01   0.0   6.8  0.07   1.9  11.0   09:02     S
23  68.7  75.7   12:55  64.6   07:08   0.0   3.7  2.03   0.8  24.0   13:26   ESE
24  68.7  73.9   14:48  65.3   23:57   0.0   3.7  0.00   1.7  13.0   16:01   NNE
25  67.6  79.8   15:51  58.0   07:19   1.9   4.5  0.00   2.0  14.0   12:36     N
26  67.2  83.5   15:28  52.8   07:06   3.8   6.0  0.00   0.0   3.0   00:00    NW
27  68.7  85.9   15:41  53.6   07:18   3.4   7.2  0.00   0.0   0.0   00:00     N
28  70.4  88.6   16:26  54.4   07:07   2.9   8.3  0.00   0.1  11.0   14:19   SSE
29  71.8  88.1   16:07  57.0   07:17   2.1   8.9  0.00   0.4  12.0   15:31    SE
30  72.6  90.0   15:54  58.5   06:59   1.4   9.0  0.00   0.4  13.0   14:21   ENE
----------------------------------------------------------------------------------
    71.4  99.7    13    45.1     8    52.7 244.3  2.25   1.5  34.0    18      NW

Max >=  90.0 11
Max <=  32.0  0
Min <=  32.0  0
Min <=   0.0  0
Max Rain: 2.03 on day 23
Days of Rain: 5 (>= 0.01 in)  1 (>= 0.10 in)  1 (>= 1.00 in)
Heat Base: 65.0  Cool Base: 65.0  Method: Integration