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Report for 2017
 Annual Climatological Summary for 2017 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 ------------------------------------------------------------------------------------ 17 1 43.4 28.4 35.8 4.5 907 1 70.5 11 1.0 7 0 6 19 0 17 2 56.7 35.2 46.6 11.8 527 12 77.0 20 15.4 9 0 1 13 0 17 3 57.6 39.2 47.7 3.0 547 13 83.8 20 15.5 15 0 1 9 0 17 4 70.6 50.1 60.5 4.1 217 83 86.8 19 37.8 7 0 0 0 0 17 5 75.3 55.1 65.4 -0.8 128 139 88.0 18 43.9 7 0 0 0 0 17 6 85.3 64.8 75.2 -0.1 13 318 92.9 21 54.2 8 5 0 0 0 17 7 90.3 70.5 80.5 0.9 2 482 101.4 22 59.6 30 16 0 0 0 17 8 83.4 63.6 73.2 -4.6 16 271 91.8 20 55.2 5 5 0 0 0 17 9 82.7 59.8 71.3 1.0 37 176 94.8 20 46.8 7 3 0 0 0 17 10 17 11 17 12 ------------------------------------------------------------------------------------ 71.7 51.9 61.8 2.2 2397 1500 101.4 Jul 1.0 Jan 29 8 41 0 Precipitation (in) Dep. Max Days of Rain From Obs. >= YR MO Total Norm Day Date 0.01 0.10 1.00 --------------------------------------------- 17 1 1.24 -0.96 0.52 2 7 5 0 17 2 0.56 -1.70 0.24 28 6 3 0 17 3 3.10 -0.25 0.67 30 17 7 0 17 4 8.56 4.71 2.76 29 15 7 4 17 5 7.58 3.36 1.99 10 11 8 3 17 6 2.36 -1.88 0.99 15 6 4 0 17 7 2.47 -1.01 1.00 5 6 5 1 17 8 3.21 0.20 2.34 16 6 4 1 17 9 1.03 -2.12 0.79 4 3 2 0 17 10 17 11 17 12 --------------------------------------------- 30.11 0.35 2.76 Apr 77 45 9 Wind Speed (mph) Dom YR MO Avg. Hi Date Dir ------------------------------ 17 1 4.7 43.0 10 W 17 2 4.6 38.0 25 WSW 17 3 5.4 41.0 6 SSW 17 4 4.5 32.0 15 SSW 17 5 3.9 46.0 27 W 17 6 3.5 29.0 18 SW 17 7 2.8 41.0 23 W 17 8 2.5 26.0 16 WNW 17 9 2.6 22.0 4 WSW 17 10 17 11 17 12 ------------------------------ 3.8 46.0 May WSW
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