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Monthly Climatological Summary for May 2019
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 65.6 74.4 18:13 58.6 01:44 1.9 2.5 0.51 0.6 22.0 00:49 SW
02 61.0 65.1 09:54 55.3 23:53 4.0 0.0 1.24 0.1 14.0 16:13 WSW
03 55.7 59.4 14:33 52.7 07:19 9.3 0.0 0.08 0.0 10.0 03:46 N
04 57.5 65.3 18:09 51.0 23:57 7.5 0.0 0.05 0.1 12.0 10:29 N
05 60.9 74.2 18:05 46.6 06:25 6.4 2.3 0.00 0.0 7.0 16:23 N
06 65.5 76.4 18:48 54.6 06:38 2.8 3.4 0.00 0.1 14.0 11:03 SW
07 66.4 75.4 14:53 58.1 06:12 2.0 3.4 0.00 0.0 12.0 19:24 ENE
08 68.5 80.9 13:23 59.6 04:32 1.5 5.0 0.21 1.4 25.0 13:34 S
09 58.2 65.2 00:01 49.3 23:59 6.8 0.0 0.06 0.5 17.0 16:01 NW
10 52.9 61.2 17:26 46.8 06:39 12.1 0.0 0.00 0.0 12.0 10:07 NNW
11 48.4 51.1 08:09 45.4 03:07 16.6 0.0 0.34 0.0 14.0 12:50 ENE
12 50.7 57.0 16:15 47.0 04:42 14.3 0.0 0.03 0.0 7.0 14:24 N
13 54.3 64.5 17:11 43.1 06:09 10.7 0.0 0.00 0.0 12.0 13:02 ENE
14 62.3 74.4 16:42 48.3 05:57 5.4 2.7 0.00 0.3 15.0 09:44 S
15 67.8 78.3 16:59 57.8 05:28 1.9 4.7 0.33 0.1 17.0 00:32 S
16 76.3 89.6 15:58 62.3 05:22 0.4 11.7 0.00 1.1 20.0 16:00 WSW
17 77.8 87.5 17:17 65.2 04:58 0.0 12.8 0.00 0.7 16.0 09:08 SW
18 75.3 85.4 14:51 65.1 20:51 0.0 10.3 0.19 2.8 33.0 19:30 SSW
19 68.1 75.1 16:21 58.3 23:59 0.5 3.5 0.00 3.0 27.0 13:00 WSW
20 59.0 65.7 14:04 51.0 05:56 6.0 0.0 0.00 0.4 19.0 23:51 ENE
21 56.9 67.3 18:07 48.3 05:35 8.2 0.2 2.79 3.0 27.0 01:11 ESE
22 71.5 85.0 17:01 56.3 05:12 2.6 9.0 0.01 1.8 23.0 16:22 S
23 71.9 78.6 16:05 67.0 06:18 0.0 6.9 0.49 0.2 24.0 00:31 W
24 79.9 89.5 17:13 69.6 02:20 0.0 14.9 0.00 1.5 22.0 16:17 SSW
25 78.7 88.4 16:47 68.5 03:54 0.0 13.7 0.00 0.6 19.0 15:04 WSW
26 75.3 82.3 18:28 69.5 07:02 0.0 10.3 0.01 0.0 11.0 06:35 NNW
27 77.7 85.5 17:46 68.4 04:49 0.0 12.7 0.00 1.3 29.0 12:34 SSW
28 79.5 86.8 15:12 72.8 06:01 0.0 14.5 0.00 1.5 22.0 17:34 SSW
29 72.2 85.1 15:20 63.9 02:45 0.1 7.3 1.16 0.5 27.0 00:41 SSW
30 69.6 76.2 14:35 63.0 06:01 0.2 4.7 0.00 0.7 18.0 15:20 WSW
31 70.7 79.7 17:21 60.0 05:21 0.6 6.3 0.00 0.0 11.0 11:36 NW
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66.3 89.6 16 43.1 13 121.8 162.8 7.50 0.7 33.0 18 SSW
Max >= 90.0 0
Max <= 32.0 0
Min <= 32.0 0
Min <= 0.0 0
Max Rain: 2.79 on day 21
Days of Rain: 15 (>= 0.01 in) 9 (>= 0.10 in) 3 (>= 1.00 in)
Heat Base: 65.0 Cool Base: 65.0 Method: Integration