St. Louis

The tables below display average monthly climate and weather indicators in St. Louis Missouri. Temperature by: Fahrenheit / Centigrade St. Louis Temperature Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual Avg. Temperature 29.3 33.9 45.1 56.7 66.1 75.4 79.8 77.6 70.2 58.4 46.2 33.9 56.1 Avg. Max Temperature 37.7 42.6 54.6 66.9 76.1 85.2 89.3 87.3 79.9 68.5 54.7 41.7 65.4 Avg. Min Temperature 20.8 25.1 35.5 46.4 56.0 65.7 70.4 67.9 60.5 48.3 37.7 26.0 46.7 Days with Max Temp of 90 F or Higher 0.0 0.0 0.0 < 0.5 1.0 8.0 15.0 12.0 4.0 < 0.5 0.0 0.0 40.0 Days with Min Temp Below Freezing 26.0 20.0 13.0 3.0 < 0.5 0.0 0.0 0.0 0.0 1.0 11.0 22.0 97.0     St. Louis Heating and Cooling Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual Heating Degree Days 1107 871 617 266 111 0.0 0.0 0.0 21.0 237 564 964 4758 Cooling Degree Days 0.0 0.0 0.0 17.0 145 312 459 391 177 33.0 0.0 0.0 1534     St. Louis Precipitation Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual Precipitation (inches) 1.8 2.1 3.6 3.5 4.0 3.7 3.9 2.9 3.1 2.7 3.3 3.0 37.5 Days with Precipitation 0.01 inch or More 9.0 8.0 11.0 11.0 11.0 9.0 9.0 8.0 8.0 8.0 10.0 9.0 111 Monthly Snowfall (inches) 5.4 4.4 4.0 0.5 0.0 < 0.05 < 0.05 0.0 0.0 < 0.05 1.4 3.8 19.5     Other St. Louis Weather Indicators Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual Average Wind Speed 10.6 10.8 11.7 11.3 9.4 8.8 8.0 7.6 8.2 8.9 10.2 10.3 9.7 Clear Days 7.0 7.0 6.0 7.0 7.0 7.0 9.0 10.0 11.0 12.0 9.0 7.0 101 Partly Cloudy Days 7.0 6.0 8.0 8.0 9.0 11.0 11.0 11.0 8.0 7.0 7.0 7.0 101 Cloudy Days 17.0 15.0 16.0 15.0 14.0 12.0 10.0 10.0 10.0 11.0 15.0 17.0 164 Percent of Possible Sunshine 50.0 52.0 54.0 56.0 59.0 66.0 68.0 65.0 63.0 60.0 46.0 43.0 57.0 Avg. Relative Humidity 59.5 74.0 72.0 68.0 68.5 69.5 70.5 72.0 72.5 71.0 69.5 72.5 75.5

Weather information for other cities in Missouri • Columbia Weather • Kansas City Weather