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Monthly Climatological Summary for May 2017
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 50.4 57.9 00:29 46.2 23:55 14.6 0.0 0.02 7.6 28.0 10:30 WSW
02 56.6 67.5 16:08 45.0 02:29 8.7 0.3 0.01 4.6 25.0 11:47 WNW
03 48.4 55.9 00:00 45.1 19:30 16.6 0.0 1.79 3.4 17.0 23:30 ENE
04 49.2 54.6 18:13 45.5 03:50 15.8 0.0 0.81 6.5 27.0 11:46 NNE
05 56.7 67.7 17:27 44.4 03:40 8.7 0.4 0.00 5.6 25.0 12:52 NNW
06 61.2 67.8 17:23 51.1 23:59 4.3 0.4 0.00 5.1 22.0 08:48 NNW
07 61.0 75.7 17:29 43.9 06:20 7.1 3.0 0.00 1.7 15.0 12:24 WNW
08 67.5 83.5 17:32 51.7 06:29 3.8 6.4 0.00 1.8 14.0 14:43 SW
09 74.6 85.3 15:46 61.4 06:07 0.2 9.8 0.00 4.3 18.0 08:20 WSW
10 74.0 83.7 17:55 63.9 06:44 0.1 9.0 1.99 3.8 20.0 21:59 SW
11 64.8 67.7 11:56 60.5 23:49 1.1 0.8 0.09 2.8 12.0 12:01 NNE
12 63.9 72.0 15:59 56.5 06:23 3.0 1.8 0.00 3.4 18.0 13:10 NE
13 66.9 80.3 17:20 51.3 05:59 3.7 5.5 0.00 1.8 11.0 11:04 WNW
14 71.2 82.5 16:56 58.5 05:58 1.1 7.4 0.00 3.8 18.0 12:38 SW
15 73.9 86.6 15:59 57.1 04:56 1.1 10.0 0.00 3.2 19.0 15:17 SSW
16 76.1 85.3 15:55 66.1 06:18 0.0 11.1 0.00 6.3 26.0 16:27 SSW
17 75.2 80.1 18:12 69.5 05:49 0.0 10.2 0.00 9.1 36.0 14:07 S
18 78.4 88.0 17:30 69.4 06:10 0.0 13.4 0.00 5.0 17.0 02:34 SW
19 68.1 78.7 14:04 55.1 23:11 1.6 4.7 1.35 4.2 35.0 05:02 N
20 65.2 78.0 18:07 55.4 00:00 3.8 4.0 0.65 3.4 17.0 00:23 SW
21 60.9 67.3 00:00 53.8 05:59 4.4 0.3 0.00 4.9 23.0 12:02 WNW
22 63.5 76.2 16:31 47.4 05:33 4.8 3.3 0.00 2.7 15.0 13:07 SSW
23 60.3 65.0 15:46 55.3 23:58 4.7 0.0 0.19 1.9 19.0 15:50 N
24 57.3 65.9 17:55 49.0 05:53 7.7 0.0 0.00 3.6 18.0 14:18 NW
25 62.8 75.5 17:30 50.8 05:57 4.9 2.7 0.00 3.0 13.0 09:40 W
26 71.0 82.9 13:28 57.5 05:47 1.6 7.7 0.00 2.3 17.0 09:06 SSW
27 69.4 79.9 12:32 62.1 23:56 0.3 4.7 0.38 2.4 46.0 16:41 NW
28 68.1 78.6 17:51 60.5 05:50 1.3 4.4 0.00 3.5 16.0 14:03 W
29 70.9 84.2 14:53 60.3 06:00 0.7 6.6 0.30 3.4 22.0 16:15 WSW
30 69.8 79.9 17:28 59.5 06:17 1.1 6.0 0.00 2.9 15.0 16:29 W
31 69.6 81.0 15:55 55.5 05:46 1.3 5.9 0.00 2.0 14.0 03:14 NNW
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65.4 88.0 18 43.9 7 128.1 139.8 7.58 3.9 46.0 27 W
Max >= 90.0 0
Max <= 32.0 0
Min <= 32.0 0
Min <= 0.0 0
Max Rain: 1.99 on day 10
Days of Rain: 11 (>= 0.01 in) 8 (>= 0.10 in) 3 (>= 1.00 in)
Heat Base: 65.0 Cool Base: 65.0 Method: Integration