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Monthly Climatological Summary for Sep 2023
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
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01 68.7 83.4 16:46 54.3 06:22 3.0 6.7 0.00 1.3 10.0 13:39 ENE
02 72.7 89.1 17:06 54.9 06:42 2.4 10.2 0.00 1.4 13.0 13:22 SSW
03 79.7 92.8 15:54 69.8 06:56 0.0 14.7 0.00 3.0 15.0 09:47 SSW
04 79.6 93.5 16:09 71.4 06:36 0.0 14.6 0.00 3.5 41.0 18:47 S
05 77.3 86.7 16:32 71.5 06:54 0.0 12.3 0.00 5.6 18.0 11:43 S
06 73.2 78.5 01:28 68.4 23:55 0.0 8.2 0.00 5.1 18.0 11:11 W
07 67.7 79.8 16:20 58.7 06:55 1.6 4.3 0.00 2.9 14.0 12:04 WNW
08 65.9 77.3 16:00 57.5 06:39 2.6 3.5 0.00 1.9 12.0 11:40 NNW
09 66.0 78.5 15:17 55.1 04:58 3.1 4.1 0.00 2.0 15.0 13:15 NNE
10 68.8 83.2 16:31 55.1 06:45 2.6 6.4 0.00 0.9 9.0 14:49 NNE
11 68.4 78.4 14:12 60.5 03:03 0.8 4.1 0.07 1.3 10.0 17:17 SW
12 67.0 76.7 16:50 55.7 23:59 1.5 3.5 0.02 2.2 13.0 10:57 N
13 65.9 82.8 16:48 50.1 07:01 4.7 5.6 0.00 1.0 11.0 13:10 WNW
14 66.4 80.7 15:07 53.0 06:44 3.7 5.0 0.00 1.1 13.0 16:15 ENE
15 64.4 81.2 16:08 47.8 07:04 5.7 5.1 0.00 0.8 14.0 13:32 NE
16 63.7 75.1 17:24 53.0 05:09 4.2 2.9 0.00 1.2 10.0 10:11 NW
17 63.9 77.4 14:20 54.9 05:23 4.1 3.0 0.00 2.6 16.0 13:06 NW
18 64.5 80.5 16:18 49.9 07:18 4.9 4.5 0.00 0.8 11.0 11:40 S
19 72.1 86.9 14:42 59.3 07:08 1.3 8.4 0.00 4.9 18.0 12:36 S
20 67.4 73.3 14:38 60.6 06:48 0.8 3.2 0.00 1.3 10.0 22:26 SSE
21 70.8 83.7 15:31 58.2 06:31 1.1 6.9 0.00 1.9 10.0 12:22 SE
22 74.1 82.1 15:59 68.7 07:06 0.0 9.1 0.00 3.0 16.0 13:30 S
23 74.2 86.4 13:40 61.5 06:32 0.5 9.6 0.00 2.2 16.0 11:44 SSE
24 75.1 87.2 14:35 63.0 07:29 0.1 10.2 0.00 3.4 19.0 17:42 SSE
25 74.1 89.3 16:19 61.4 07:24 0.4 9.6 0.00 1.5 12.0 14:00 W
26 73.4 91.0 16:46 60.4 07:27 0.4 8.8 0.33 1.9 18.0 21:11 WSW
27 70.1 81.8 16:09 62.9 07:09 0.5 5.5 1.32 1.7 10.0 04:20 ESE
28 69.8 83.5 15:48 60.7 04:16 1.3 6.1 0.00 1.3 9.0 12:21 E
29 74.1 88.3 16:50 62.4 07:15 0.4 9.5 0.00 1.8 11.0 10:43 SE
30 77.0 89.8 13:55 64.3 07:02 0.0 12.0 0.00 1.6 13.0 14:17 SE
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70.5 93.5 4 47.8 15 51.7 217.6 1.74 2.2 41.0 4 S
Max >= 90.0 3
Max <= 32.0 0
Min <= 32.0 0
Min <= 0.0 0
Max Rain: 1.32 on day 27
Days of Rain: 4 (>= 0.01 in) 2 (>= 0.10 in) 1 (>= 1.00 in)
Heat Base: 65.0 Cool Base: 65.0 Method: Integration