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Monthly Climatological Summary for Sep 2009
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 60.9 72.7 15:42 48.8 06:30 5.9 1.8 0.00 1.5 13.0 14:59 NE
02 62.9 74.2 16:03 51.1 06:49 4.9 2.8 0.00 1.1 10.0 14:10 NE
03 65.5 77.5 14:46 53.0 07:15 3.8 4.3 0.00 1.0 8.0 12:36 NNE
04 68.9 80.5 14:15 57.9 05:41 1.9 5.8 0.00 1.3 11.0 14:18 NE
05 66.3 69.3 17:56 63.1 07:18 0.2 1.5 0.25 2.0 14.0 17:42 ESE
06 68.7 75.7 17:34 64.6 06:00 0.0 3.7 0.06 1.1 8.0 11:56 NE
07 70.2 81.2 15:24 61.4 07:00 0.6 5.8 0.00 1.2 10.0 13:12 ENE
08 70.8 80.5 14:52 61.0 07:05 0.5 6.3 0.00 1.5 12.0 13:54 ENE
09 70.3 81.3 15:56 59.9 06:31 0.9 6.2 0.00 1.3 12.0 15:57 NE
10 70.2 81.1 15:45 60.0 07:01 1.0 6.2 0.00 1.3 10.0 11:46 NNE
11 71.5 82.0 15:40 61.9 06:52 0.4 6.9 0.00 1.1 12.0 13:41 NNE
12 70.1 80.6 14:34 61.1 07:03 0.8 5.8 0.00 2.2 16.0 14:42 NNE
13 67.9 77.5 14:46 58.1 06:50 1.5 4.5 0.00 2.0 16.0 11:12 NNE
14 67.9 80.0 14:59 56.3 06:58 2.2 5.0 0.00 1.9 13.0 14:25 NE
15 68.2 76.0 17:55 62.8 06:35 0.5 3.6 0.00 1.7 12.0 12:55 NNE
16 70.5 81.8 14:29 60.8 06:50 0.5 6.0 0.00 4.1 20.0 14:16 NE
17 65.2 76.7 15:21 55.6 06:38 3.1 3.4 0.00 3.3 16.0 13:48 NNW
18 63.5 76.3 14:16 51.8 05:48 4.7 3.2 0.00 2.5 15.0 11:16 NNW
19 66.6 79.0 14:50 53.8 06:42 3.1 4.7 0.00 2.0 14.0 13:54 NE
20 63.7 68.2 16:02 57.2 08:56 1.9 0.6 1.61 1.3 12.0 08:39 N
21 69.6 80.0 15:12 62.4 03:08 0.4 5.0 0.69 2.6 20.0 19:09 S
22 68.4 76.6 16:36 63.0 07:14 0.3 3.7 0.04 2.5 12.0 13:08 W
23 68.7 75.9 16:29 62.9 06:51 0.5 4.2 0.00 1.1 8.0 07:38 NNW
24 67.4 71.1 15:38 65.7 05:06 0.0 2.4 0.08 1.0 8.0 11:58 NE
25 67.1 77.2 16:02 58.4 23:51 1.3 3.4 0.04 2.5 13.0 12:31 WSW
26 58.8 68.9 16:05 54.0 04:54 6.3 0.1 0.64 1.8 16.0 16:09 SW
27 66.7 80.3 15:42 51.3 05:02 4.2 5.9 0.01 5.2 29.0 22:53 NW
28 60.0 68.9 00:01 52.4 23:55 5.2 0.1 0.00 8.3 30.0 15:08 W
29 54.9 65.2 16:13 47.1 07:15 10.1 0.0 0.00 4.3 20.0 12:06 NW
30 56.1 69.3 17:09 42.7 06:47 9.5 0.6 0.00 1.5 13.0 23:42 SE
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66.3 82.0 11 42.7 30 76.2 113.5 3.42 2.2 30.0 28 N
Max >= 90.0 0
Max <= 32.0 0
Min <= 32.0 0
Min <= 0.0 0
Max Rain: 1.61 on day 20
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