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Monthly Climatological Summary for Sep 2019
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 71.6 79.8 17:07 65.9 06:32 0.0 6.6 0.01 2.8 10.0 15:49 W
02 73.7 83.4 16:58 64.3 06:43 0.0 8.7 0.00 1.6 11.0 14:17 S
03 79.5 90.4 17:47 70.1 05:38 0.0 14.5 0.00 3.8 18.0 13:58 SW
04 74.6 80.8 15:48 64.3 23:56 0.0 9.6 0.00 2.4 11.0 09:23 N
05 70.9 84.1 16:53 59.0 06:38 1.3 7.2 0.00 1.6 9.0 10:19 ENE
06 76.2 85.7 13:59 67.8 23:57 0.0 11.2 0.00 3.3 17.0 09:23 NW
07 70.4 79.8 15:12 59.1 06:49 0.7 6.1 0.00 1.8 9.0 14:38 E
08 70.2 79.2 17:07 64.2 09:09 0.1 5.2 0.87 3.2 25.0 07:35 SSE
09 79.1 91.6 16:56 66.8 06:57 0.0 14.1 0.00 3.5 15.0 12:40 SSE
10 82.0 90.5 15:53 75.4 07:18 0.0 17.0 0.00 3.5 12.0 01:30 SSW
11 82.0 90.9 14:52 74.2 06:58 0.0 17.0 0.00 3.6 15.0 11:07 SSW
12 82.3 91.1 14:48 73.2 06:16 0.0 17.3 0.00 3.8 15.0 14:05 SSW
13 75.6 81.1 15:46 63.9 23:58 0.0 10.6 0.00 4.0 17.0 11:31 W
14 72.3 85.3 15:45 58.1 04:54 1.7 9.0 0.00 3.1 15.0 11:04 S
15 79.5 91.3 16:08 68.6 07:29 0.0 14.5 0.00 3.3 13.0 13:17 SW
16 82.3 93.0 15:18 72.3 07:15 0.0 17.3 0.00 1.9 10.0 12:28 W
17 79.3 89.3 15:00 70.2 07:03 0.0 14.3 0.00 1.8 9.0 12:58 SSE
18 78.9 90.9 16:00 68.3 07:07 0.0 13.9 0.00 2.1 12.0 13:34 ESE
19 78.6 92.6 15:33 66.8 06:46 0.0 13.6 0.00 1.1 15.0 16:06 SSE
20 77.7 87.3 14:08 68.8 06:57 0.0 12.7 0.01 3.2 22.0 19:01 S
21 77.8 83.1 15:43 73.5 00:00 0.0 12.8 0.00 6.2 21.0 13:20 S
22 74.8 80.8 13:49 72.2 07:05 0.0 9.8 0.14 4.9 22.0 13:24 SSW
23 70.2 79.1 16:07 61.5 23:58 0.4 5.6 0.00 2.5 14.0 13:42 NNW
24 67.9 78.2 15:07 56.2 06:11 2.4 5.3 0.00 3.3 18.0 12:06 S
25 72.4 83.6 18:24 65.6 03:29 0.0 7.4 0.00 2.7 13.0 06:17 WSW
26 66.7 75.8 15:30 58.5 07:41 1.5 3.2 0.01 1.7 12.0 11:37 ENE
27 75.7 90.2 15:51 60.6 00:00 0.7 11.4 0.00 5.1 25.0 15:37 SSW
28 75.5 81.6 16:54 69.6 06:20 0.0 10.5 0.00 2.4 16.0 10:54 SSW
29 79.2 89.7 16:11 69.4 07:20 0.0 14.2 0.07 3.5 17.0 13:20 SSW
30 80.4 90.6 16:04 68.6 07:02 0.0 15.4 0.00 3.7 19.0 12:35 SSW
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75.9 93.0 16 56.2 24 8.8 336.0 1.11 3.0 25.0 8 SSW
Max >= 90.0 11
Max <= 32.0 0
Min <= 32.0 0
Min <= 0.0 0
Max Rain: 0.87 on day 8
Days of Rain: 6 (>= 0.01 in) 2 (>= 0.10 in) 0 (>= 1.00 in)
Heat Base: 65.0 Cool Base: 65.0 Method: Integration