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Monthly Climatological Summary for Sep 2011
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 89.6 101.5 15:04 79.7 05:26 0.0 24.6 0.00 5.7 18.0 12:21 SSW
02 90.8 99.7 15:40 76.0 07:12 0.0 25.8 0.00 3.8 16.0 09:14 SSW
03 85.4 98.1 16:17 73.5 07:02 0.0 20.4 0.00 4.0 21.0 19:44 SW
04 70.7 77.6 16:20 62.5 23:57 0.0 5.7 0.07 4.1 18.0 16:30 N
05 63.6 72.4 16:16 54.9 06:20 1.4 0.0 0.00 5.4 23.0 14:34 NNE
06 61.1 72.7 17:20 49.1 06:38 3.9 0.0 0.00 4.0 22.0 15:27 NNE
07 62.2 75.9 16:52 48.0 06:46 2.8 0.0 0.00 3.3 18.0 15:20 N
08 64.0 79.1 15:30 48.4 07:17 1.0 0.0 0.00 3.2 19.0 14:10 N
09 61.4 65.0 11:05 59.5 15:20 3.6 0.0 0.71 2.4 16.0 14:20 WNW
10 66.0 74.6 17:07 61.4 00:00 0.0 1.0 0.15 0.7 9.0 13:13 WSW
11 69.1 82.1 17:57 58.4 05:36 0.0 4.1 0.00 1.0 8.0 11:39 NNE
12 74.4 87.2 16:47 60.5 05:12 0.0 9.4 0.00 3.0 16.0 12:26 SW
13 76.9 89.1 15:51 66.3 07:13 0.0 11.9 0.00 3.3 13.0 07:51 W
14 58.1 70.5 00:00 51.0 23:56 6.9 0.0 1.21 3.9 19.0 15:52 NNE
15 52.6 61.9 16:08 41.2 06:51 12.4 0.0 0.00 2.7 16.0 11:43 NE
16 56.1 65.1 14:32 52.1 04:03 8.9 0.0 0.00 1.7 11.0 17:33 E
17 58.6 65.9 14:26 53.4 07:11 6.4 0.0 0.08 1.5 13.0 16:11 SSE
18 63.6 71.9 16:12 57.2 01:42 1.4 0.0 0.58 2.6 17.0 13:31 SSE
19 65.2 71.6 17:09 57.6 23:57 0.0 0.2 0.04 2.1 15.0 14:12 NW
20 63.6 77.2 15:52 49.9 07:00 1.4 0.0 0.00 1.2 14.0 10:51 SSE
21 66.0 75.5 16:03 57.7 06:03 0.0 1.0 0.01 3.2 17.0 11:45 W
22 57.3 64.3 16:14 52.7 06:48 7.7 0.0 0.00 2.6 13.0 17:46 SW
23 55.1 64.2 16:12 47.3 04:58 9.9 0.0 0.07 1.1 10.0 14:21 SSW
24 54.9 65.3 15:17 45.1 06:27 10.1 0.0 0.00 1.3 12.0 11:49 NNE
25 53.8 65.8 15:58 41.7 06:45 11.2 0.0 0.00 1.5 12.0 12:21 N
26 58.8 70.0 15:41 46.5 07:13 6.2 0.0 0.00 5.8 27.0 14:55 WSW
27 62.8 71.4 17:23 56.6 23:10 2.2 0.0 0.00 3.9 19.0 06:38 WNW
28 66.4 75.2 16:23 56.9 00:00 0.0 1.4 0.00 2.2 14.0 12:14 WNW
29 71.0 84.6 13:24 60.3 05:55 0.0 6.0 0.00 5.9 26.0 13:42 WNW
30 62.3 72.0 16:05 53.5 06:45 2.7 0.0 0.00 4.8 20.0 10:49 NW
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65.4 101.5 1 41.2 15 100.1 111.5 2.92 3.0 27.0 26 WNW
Max >= 90.0 3
Max <= 32.0 0
Min <= 32.0 0
Min <= 0.0 0
Max Rain: 1.21 on day 14
Days of Rain: 9 (>= 0.01 in) 4 (>= 0.10 in) 1 (>= 1.00 in)
Heat Base: 65.0 Cool Base: 65.0 Method: Integration