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Report for 2018
Annual Climatological Summary for 2018 Name: ofallonweather.com City: O'Fallon State: MO Elevation: 550 ft Lat: N 38° 50' 20" Lon: W 090° 43' 43" Temperature (°F), Heat Base: 65.0 Cool Base: 65.0 Dep. Heat Cool Max Max Min Min Mean Mean From Deg Deg >= <= <= <= YR MO Max Min Mean Norm Days Days Hi Date Low Date 90.0 32.0 32.0 0.0 ------------------------------------------------------------------------------------ 18 1 38.9 19.8 30.0 -1.3 1084 0 70.1 21 -7.9 1 0 12 23 3 18 2 47.1 27.0 37.1 2.3 786 5 77.6 15 4.9 5 0 6 21 0 18 3 50.0 35.0 42.4 -2.3 700 0 68.7 15 25.0 9 0 0 10 0 18 4 60.0 39.4 49.4 -7.0 495 26 87.2 12 23.0 7 0 0 10 0 18 5 84.5 63.7 74.4 8.2 12 303 94.6 27 34.7 6 4 0 0 0 18 6 88.5 69.0 78.4 3.1 2 406 95.8 1 57.2 4 14 0 0 0 18 7 87.8 69.2 78.3 -1.3 2 415 97.5 14 59.6 8 13 0 0 0 18 8 87.9 69.0 78.0 0.2 4 406 98.7 6 55.5 23 13 0 0 0 18 9 83.2 63.5 73.2 2.9 40 286 94.2 18 47.5 27 11 0 0 0 18 10 68.2 48.4 57.9 -0.8 317 98 89.4 3 29.4 21 0 0 1 0 18 11 45.1 30.3 37.6 -7.8 821 0 62.4 24 14.5 14 0 4 17 0 18 12 46.6 30.4 37.9 2.9 840 0 65.4 1 16.2 10 0 3 17 0 ------------------------------------------------------------------------------------ 65.6 47.0 56.2 -0.1 5109 1949 98.7 Aug -7.9 Jan 55 25 99 3 Precipitation (in) Dep. Max Days of Rain From Obs. >= YR MO Total Norm Day Date 0.01 0.10 1.00 --------------------------------------------- 18 1 1.32 -0.88 0.85 22 5 2 0 18 2 4.74 2.48 2.06 20 12 6 2 18 3 5.95 2.60 1.80 26 15 10 1 18 4 2.59 -1.26 1.57 13 6 3 1 18 5 4.19 -0.03 1.51 3 8 8 1 18 6 4.10 -0.14 1.79 26 11 7 1 18 7 0.93 -2.55 0.36 1 5 3 0 18 8 4.27 1.26 1.40 29 11 6 3 18 9 1.80 -1.35 0.62 8 6 3 0 18 10 4.32 1.54 1.57 7 13 8 1 18 11 3.07 0.14 0.88 1 16 8 0 18 12 4.49 2.06 1.79 31 12 7 1 --------------------------------------------- 41.77 3.87 2.06 Feb 120 71 11 Wind Speed (mph) Dom YR MO Avg. Hi Date Dir ------------------------------ 18 1 4.5 30.0 11 WSW 18 2 3.9 32.0 20 SW 18 3 4.8 32.0 6 NE 18 4 4.6 36.0 3 W 18 5 2.6 33.0 14 SW 18 6 2.4 32.0 20 SW 18 7 0.9 33.0 1 NW 18 8 1.2 28.0 29 SSW 18 9 0.8 22.0 8 SSE 18 10 1.1 31.0 20 WSW 18 11 0.7 34.0 25 WNW 18 12 1.2 35.0 2 W ------------------------------ 2.4 36.0 Apr WSW