Homepage

2021: Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec 
2020: Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec 
2019: Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec 
2018: Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec 
2017: Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec 
2016: Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec 
2015: Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec 
2014: Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec 
2013: Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec 
2012: Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec 
2011: Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec 
2010: Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec 
2009: Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec 
2008: Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec 
2007: Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec 
2006: Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec 
2005: Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec 

Report for 2021 05
 Monthly Climatological Summary for May 2021 Name: ofallonweather.com City: O'Fallon State: MO Elevation: 550 ft Lat: N 38° 50' 20" Lon: W 090° 43' 43" 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 ---------------------------------------------------------------------------------- 1 70.1 83.9 3:41p 55.5 6:20a 2.5 7.6 0.00 4.5 25.0 4:05p SW 2 67.3 72.3 1:46p 61.7 9:38p 0.6 2.9 0.02 5.2 24.0 4:21p SSW 3 70.2 83.6 5:39p 61.5 5:42a 1.1 6.3 0.11 3.8 20.0 1:19p WSW 4 57.6 66.1 12:00a 50.9 11:54p 7.5 0.0 0.13 3.8 17.0 9:55a NNW 5 56.6 68.3 5:51p 45.2 6:18a 8.7 0.4 0.00 2.6 14.0 12:25p NW 6 57.2 65.5 1:52p 49.5 11:54p 7.8 0.0 0.02 4.5 24.0 1:49p WNW 7 60.1 71.8 1:59p 44.6 6:13a 6.8 1.9 0.00 4.5 25.0 1:59p WNW 8 54.6 60.2 12:01a 50.5 6:57a 10.4 0.0 0.00 6.2 22.0 2:57p ESE 9 49.3 56.1 4:28a 42.6 11:58p 15.7 0.0 0.34 4.2 33.0 4:29a NNE 10 50.2 61.3 3:15p 38.0 5:42a 14.8 0.0 0.00 1.0 8.0 9:35a WNW 11 51.3 57.7 12:14p 40.9 4:27a 13.7 0.0 0.00 2.9 21.0 12:05p ENE 12 53.8 63.4 5:50p 44.4 6:42a 11.2 0.0 0.00 3.5 16.0 11:21a E 13 55.0 67.0 5:19p 39.0 6:08a 10.3 0.2 0.00 1.6 13.0 12:20p ESE 14 59.1 72.0 4:33p 41.2 5:47a 7.7 1.8 0.00 2.1 14.0 10:51a S 15 59.2 62.2 4:40p 56.0 3:18a 5.8 0.0 0.00 2.4 20.0 1:44p S 16 63.7 72.5 1:00p 53.6 5:43a 3.3 2.1 0.82 2.4 27.0 8:58p SE 17 64.5 72.3 3:14p 60.3 5:31a 1.9 1.4 0.40 3.8 17.0 7:03p SE 18 64.4 67.9 3:02p 61.0 1:13a 1.2 0.6 0.64 4.0 16.0 12:02a SSE 19 71.3 77.6 1:02p 65.7 6:41a 0.0 6.3 0.00 4.2 21.0 1:15p SSE 20 75.8 82.8 3:36p 68.5 6:31a 0.0 10.8 0.00 5.3 22.0 12:33p S 21 75.4 83.1 2:41p 67.7 6:01a 0.0 10.4 0.00 2.7 23.0 2:14p SSW 22 73.7 80.7 4:33p 66.6 6:10a 0.0 8.7 0.00 2.2 12.0 11:57a WSW 23 75.9 86.9 5:31p 62.3 5:09a 0.3 11.2 0.00 1.9 12.0 1:09p WSW 24 76.2 85.9 3:26p 62.8 5:52a 0.2 11.4 0.00 3.0 14.0 2:40p SW 25 75.1 84.2 1:23p 66.2 11:24p 0.0 10.1 0.15 4.1 21.0 3:16p SW 26 74.7 87.1 6:01p 65.5 2:15a 0.0 9.7 0.01 2.2 10.0 8:59a WSW 27 69.0 78.8 11:00a 65.3 3:46a 0.0 4.0 1.37 2.7 33.0 11:38a SSW 28 56.0 65.6 12:00a 48.8 11:55p 9.1 0.0 0.05 5.0 24.0 2:19p NW 29 52.7 62.7 6:16p 47.5 5:41a 12.3 0.0 0.00 3.1 13.0 4:34a NNE 30 58.3 71.0 3:32p 42.7 5:27a 8.0 1.3 0.00 1.6 11.0 2:12p ESE 31 65.3 75.3 3:39p 56.3 5:42a 2.8 3.2 0.00 1.5 10.0 9:59a S ---------------------------------------------------------------------------------- 63.3 87.1 26 38.0 10 163.7 112.3 4.06 3.3 33.0 9 SSW Max >= 90.0: 0 Max <= 32.0: 0 Min <= 32.0: 0 Min <= 0.0: 0 Max Rain: 1.37 on day 27 Days of Rain: 12 (>= 0.01 in) 8 (>= 0.10 in) 1 (>= 1.00 in) Heat Base: 65.0 Cool Base: 65.0 Method: Integration
USA Weather Finder