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Monthly Climatological Summary for Apr 2026
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 53.1 65.4 00:00 48.3 09:32 12.0 0.0 1.31 4.3 18.0 03:54 ENE
02 68.5 78.6 18:23 54.1 00:00 2.4 5.9 0.03 8.2 34.0 17:51 S
03 71.0 83.6 16:10 56.9 06:09 2.1 8.0 0.19 4.2 27.0 13:24 SSW
04 54.6 75.2 00:03 40.9 23:17 11.8 1.4 0.32 7.3 30.0 02:46 WNW
05 48.3 59.4 16:19 38.6 07:09 16.7 0.0 0.00 5.5 23.0 16:52 WNW
06 52.6 64.1 16:26 41.8 06:49 12.4 0.0 0.00 4.3 17.0 12:50 NNW
07 48.2 55.8 16:36 41.0 07:38 16.8 0.0 0.00 6.0 19.0 02:15 E
08 60.7 77.8 16:37 41.7 06:47 7.9 3.6 0.00 6.0 31.0 15:23 S
09 71.1 81.4 15:52 59.4 06:28 0.9 7.0 0.00 6.3 22.0 11:40 SSW
10 62.9 69.4 00:00 53.8 23:54 3.0 0.9 0.00 4.4 19.0 16:37 NW
11 59.2 70.2 15:40 48.7 03:48 6.8 1.0 0.00 3.7 15.0 14:35 SE
12 70.6 79.2 12:08 61.6 06:52 0.2 5.9 0.00 7.2 32.0 18:56 SSW
13 75.7 84.4 15:57 68.5 06:54 0.0 10.7 0.00 7.5 28.0 23:26 SSW
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61.3 84.4 13 38.6 5 93.0 44.4 1.85 5.8 34.0 2 SSW
Max >= 90.0 0
Max <= 32.0 0
Min <= 32.0 0
Min <= 0.0 0
Max Rain: 1.31 on day 1
Days of Rain: 4 (>= 0.01 in) 3 (>= 0.10 in) 1 (>= 1.00 in)
Heat Base: 65.0 Cool Base: 65.0 Method: Integration