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Report for 2021 12
Monthly Climatological Summary for Dec 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 52.4 66.1 2:13p 44.0 12:44a 12.6 0.0 0.03 3.1 16.0 3:00p WSW 2 57.0 71.0 2:09p 46.5 10:56p 8.9 0.8 0.00 3.6 17.0 10:28a W 3 54.0 75.0 1:47p 39.5 7:26a 12.7 1.7 0.00 2.4 15.0 11:04a NNW 4 43.2 51.9 1:57p 35.5 7:33a 21.8 0.0 0.00 3.4 16.0 10:56a ENE 5 49.6 61.8 3:18p 36.0 12:00a 15.4 0.0 0.03 4.5 25.0 11:56p S 6 35.9 50.5 12:00a 26.2 11:53p 29.1 0.0 0.00 6.7 26.0 3:44a NW 7 27.6 31.6 3:10p 23.4 5:34a 37.4 0.0 0.00 3.8 17.0 6:42p SSE 8 36.8 50.1 2:42p 21.5 2:46a 28.2 0.0 0.00 2.6 12.0 5:25a WSW 9 49.6 66.7 2:46p 38.2 1:27a 15.4 0.1 0.00 4.5 22.0 9:03a SSW 10 51.6 66.0 7:33p 36.4 3:14a 13.4 0.0 0.80 3.7 38.0 7:40p S 11 41.0 62.6 12:15a 32.9 11:29p 24.0 0.0 0.00 8.6 36.0 3:33a WNW 12 42.0 54.5 2:32p 32.4 5:37a 23.0 0.0 0.00 4.9 20.0 2:38p SSW 13 41.7 58.4 2:11p 26.6 7:21a 23.3 0.0 0.00 1.8 11.0 10:55a SSW 14 52.8 66.6 1:52p 35.2 1:31a 12.3 0.1 0.00 4.3 22.0 3:33p S 15 67.8 73.3 12:32p 60.3 12:00a 0.6 3.4 0.01 10.4 39.0 9:57p SSW 16 46.2 62.6 12:00a 27.2 11:37p 18.8 0.0 0.06 4.5 20.0 1:13a WNW 17 33.4 38.7 11:19a 26.6 2:46a 31.6 0.0 0.32 2.8 18.0 12:51p ESE 18 34.3 37.9 12:34p 26.1 11:59p 30.3 0.0 0.14 4.2 17.0 5:17a NNW 19 28.1 39.2 2:52p 18.4 6:51a 36.9 0.0 0.00 1.5 8.0 1:50p WSW 20 34.2 48.8 2:06p 21.9 4:40a 30.8 0.0 0.00 2.8 16.0 12:04p SW 21 36.0 50.8 2:09p 23.0 7:06a 29.0 0.0 0.00 3.3 17.0 12:40p WNW 22 33.4 44.2 2:24p 21.3 7:56a 31.6 0.0 0.00 2.6 11.0 1:48p S 23 48.5 63.2 2:04p 30.6 2:12a 16.5 0.0 0.00 5.5 25.0 3:05p SW 24 60.6 72.7 2:37p 46.4 2:14a 6.3 1.9 0.00 6.9 26.0 2:55p SSW 25 52.8 66.1 12:09a 40.9 7:06p 12.3 0.0 0.00 3.1 21.0 12:48a WNW 26 45.6 58.7 11:58p 38.3 7:13a 19.4 0.0 0.01 4.7 24.0 9:15p SSE 27 53.8 62.9 3:41a 41.2 8:54p 11.2 0.0 0.00 5.6 21.0 9:58a WNW 28 41.9 45.9 3:43p 37.8 6:40a 23.1 0.0 1.59 4.2 18.0 5:54a SE 29 35.9 42.3 12:51a 32.5 6:47a 29.1 0.0 0.04 3.4 13.0 9:56a NE 30 38.6 42.9 2:30p 34.7 8:06a 26.4 0.0 0.01 1.3 9.0 3:52p S 31 50.8 66.0 2:42p 40.0 5:56a 14.2 0.0 0.00 2.5 16.0 12:38p WSW ---------------------------------------------------------------------------------- 44.4 75.0 3 18.4 19 645.6 8.0 3.04 4.1 39.0 15 SW Max >= 90.0: 0 Max <= 32.0: 1 Min <= 32.0: 12 Min <= 0.0: 0 Max Rain: 1.59 on day 28 Days of Rain: 11 (>= 0.01 in) 4 (>= 0.10 in) 1 (>= 1.00 in) Heat Base: 65.0 Cool Base: 65.0 Method: Integration