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Monthly Climatological Summary for May 2018
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 73.2 86.2 15:37 54.6 06:10 1.7 9.9 0.00 5.7 24.0 10:17 SSW
02 77.6 87.3 17:49 68.6 05:38 0.0 12.6 0.00 6.6 24.0 10:00 SSW
03 69.3 76.9 00:37 65.0 07:12 0.0 4.3 1.51 6.5 28.0 17:52 SSW
04 68.4 73.5 18:33 58.9 23:05 0.5 3.9 0.00 4.1 23.0 00:36 W
05 68.3 80.4 16:16 54.7 04:37 2.5 5.8 0.00 1.5 13.0 12:13 NNW
06 70.2 84.4 16:04 34.7 18:50 0.7 5.9 0.30 2.8 22.0 18:50 W
07 67.6 78.7 16:24 56.2 06:29 1.9 4.4 0.00 1.2 14.0 13:13 E
08 69.0 80.7 16:54 50.8 06:01 3.2 7.2 0.00 3.4 17.0 13:25 SE
09 76.0 88.2 16:59 64.7 07:12 0.0 11.0 0.13 4.4 21.0 13:14 SW
10 75.5 89.0 15:37 59.5 06:26 0.4 10.9 0.00 1.0 18.0 10:34 W
11 77.0 88.8 18:06 66.5 06:21 0.0 12.0 0.00 4.3 26.0 13:04 SSW
12 78.7 89.2 17:19 71.3 06:18 0.0 13.7 0.00 3.8 20.0 17:30 SSW
13 80.4 90.3 16:58 71.5 06:09 0.0 15.4 0.00 2.8 15.0 09:39 SW
14 76.2 89.1 15:41 65.2 18:25 0.0 11.2 0.34 3.5 33.0 17:21 SW
15 71.9 81.6 16:32 65.5 03:49 0.0 6.9 0.00 2.1 13.0 05:08 NW
16 70.9 81.4 18:05 61.2 06:29 0.5 6.4 0.00 1.9 12.0 14:50 NNE
17 73.0 82.2 16:17 63.7 05:56 0.1 8.1 0.00 0.9 13.0 11:09 ENE
18 65.9 68.1 15:51 64.5 07:42 0.0 0.9 0.57 1.4 9.0 15:54 N
19 68.8 79.1 14:06 63.5 06:46 0.1 4.0 0.17 1.9 23.0 14:40 WSW
20 69.5 80.1 18:43 60.9 04:06 0.6 5.1 0.77 2.3 21.0 23:33 SSE
21 71.8 82.6 18:14 63.9 05:05 0.1 6.9 0.40 1.5 13.0 12:25 SW
22 73.9 83.5 17:12 63.1 06:12 0.1 9.0 0.00 0.8 10.0 13:08 NW
23 75.7 84.9 17:03 64.3 05:34 0.0 10.7 0.00 0.4 11.0 14:48 E
24 78.0 88.5 16:28 65.6 04:57 0.0 13.0 0.00 0.5 11.0 13:05 SSE
25 77.0 85.7 13:48 67.7 05:55 0.0 12.0 0.00 3.0 15.0 14:14 SW
26 79.9 91.5 15:48 67.7 05:59 0.0 14.9 0.00 2.1 11.0 11:37 SW
27 82.5 94.6 15:39 73.6 05:49 0.0 17.5 0.00 1.5 10.0 02:08 SW
28 82.9 94.1 15:45 70.3 06:02 0.0 17.9 0.00 0.9 13.0 14:21 E
29 78.2 82.8 10:24 72.2 05:56 0.0 13.2 0.00 1.0 13.0 10:15 SE
30 79.4 88.6 16:17 70.5 06:06 0.0 14.4 0.00 2.1 17.0 15:20 W
31 79.5 87.3 15:06 73.1 05:10 0.0 14.5 0.00 3.2 25.0 08:50 WSW
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74.4 94.6 27 34.7 6 12.4 303.6 4.19 2.6 33.0 14 SW
Max >= 90.0 4
Max <= 32.0 0
Min <= 32.0 0
Min <= 0.0 0
Max Rain: 1.51 on day 3
Days of Rain: 8 (>= 0.01 in) 8 (>= 0.10 in) 1 (>= 1.00 in)
Heat Base: 65.0 Cool Base: 65.0 Method: Integration