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Monthly Climatological Summary for Sep 2020
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 70.5 74.5 15:15 68.8 23:58 0.0 5.5 0.53 1.7 11.0 16:39 S
02 73.2 80.3 16:20 67.8 01:27 0.0 8.2 0.00 1.2 8.0 12:23 WNW
03 75.1 87.0 17:23 64.9 06:18 0.0 10.1 0.00 3.1 18.0 17:00 W
04 68.7 81.3 17:10 56.1 07:03 1.7 5.4 0.00 1.2 10.0 14:09 NNW
05 73.6 87.1 17:40 61.0 01:17 0.9 9.4 0.00 2.2 14.0 10:43 SW
06 78.3 89.5 16:04 70.2 06:20 0.0 13.3 0.00 5.2 23.0 16:42 SSW
07 80.6 89.6 15:42 73.3 07:21 0.0 15.6 0.00 4.7 18.0 14:12 SSW
08 74.8 83.1 13:09 68.1 23:56 0.0 9.8 0.66 3.4 16.0 13:34 SW
09 69.3 79.4 17:09 62.8 06:12 0.4 4.7 0.00 2.4 11.0 20:50 N
10 70.0 77.3 15:13 66.2 06:36 0.0 5.1 0.01 2.4 10.0 14:49 NNE
11 73.9 83.9 16:20 66.2 02:54 0.0 8.9 0.91 2.0 11.0 20:34 ESE
12 70.8 75.1 13:25 65.3 23:56 0.0 5.8 0.23 2.3 12.0 13:33 WSW
13 66.9 74.9 16:23 60.9 06:48 1.0 2.9 0.00 2.0 12.0 15:05 N
14 68.1 79.5 17:12 57.8 06:47 2.0 5.1 0.00 1.8 14.0 13:04 ENE
15 66.7 78.7 15:38 56.7 07:07 2.3 4.1 0.00 1.1 9.0 10:21 ESE
16 66.9 80.5 17:20 56.8 06:51 2.5 4.3 0.00 0.7 9.0 13:23 NW
17 66.5 75.5 14:48 61.0 23:57 1.4 2.9 0.00 2.9 15.0 13:44 N
18 61.3 70.8 16:13 52.6 06:59 4.9 1.2 0.00 2.6 14.0 12:12 NE
19 57.1 68.8 16:51 45.5 06:47 8.6 0.7 0.00 1.6 13.0 13:19 E
20 59.0 74.1 16:20 45.4 07:01 8.1 2.1 0.00 1.5 14.0 11:36 E
21 63.1 77.9 16:51 47.1 07:10 5.8 3.9 0.00 1.5 10.0 13:45 SE
22 64.6 74.8 15:16 54.2 06:29 3.1 2.7 0.00 1.4 10.0 14:09 SSE
23 64.1 72.0 16:30 57.5 06:04 2.9 1.9 0.00 1.1 7.0 15:00 SSE
24 61.8 73.5 16:50 53.1 04:46 4.8 1.6 0.00 1.8 12.0 11:59 S
25 66.6 81.4 16:45 52.6 07:06 3.7 5.3 0.00 2.4 12.0 11:24 S
26 71.8 84.7 15:58 62.2 07:11 0.4 7.2 0.00 5.7 18.0 14:48 S
27 66.5 75.4 16:55 54.7 23:37 1.5 3.0 0.37 3.9 21.0 19:41 W
28 57.0 66.5 15:21 51.9 07:39 8.1 0.1 0.16 4.8 25.0 18:42 WNW
29 55.7 63.8 15:20 47.5 07:07 9.3 0.0 0.00 3.7 16.0 12:11 W
30 63.3 77.0 12:57 53.3 23:58 4.6 2.8 0.00 6.0 24.0 12:43 W
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67.5 89.6 7 45.4 20 78.0 153.6 2.87 2.6 25.0 28 SW
Max >= 90.0 0
Max <= 32.0 0
Min <= 32.0 0
Min <= 0.0 0
Max Rain: 0.91 on day 11
Days of Rain: 7 (>= 0.01 in) 6 (>= 0.10 in) 0 (>= 1.00 in)
Heat Base: 65.0 Cool Base: 65.0 Method: Integration