St. Louis, MO Weather

St. Louis, MO climate is warm during summer when temperatures tend to be in the 70's and very cold during winter when temperatures tend to be in the 30's.

The warmest month of the year is July with an average maximum temperature of 90.50 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 21.20 degrees Fahrenheit.

Temperature variations between night and day tend to be moderate during summer with a difference that can reach 20 degrees Fahrenheit, and fairly limited during winter with an average difference of 18 degrees Fahrenheit.

The annual average precipitation at St. Louis is 38.84 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is November with an average rainfall of 4.06 Inches.

Weather Data

Current Conditions

(Updated: 10:53 PM CST FRI NOV 20 2009)

Fog And Mist, 42°F	Humidity: 96%	Dewpoint: 41°F
	Wind Speed: CALM	Heat Index: 42°F
	Barometer: 30.13 in.	Wind Chill: 42°F

Weather Forecast

(Generated: 8:10 PM CST FRI NOV 20 2009)

		Tonight: Mostly cloudy. Patchy fog. Low in the upper 40s. Light wind.
	Lo: 49°F
	Hi: 60°F	Saturday: Mostly cloudy in the morning and early afternoon then becoming partly sunny. Patchy fog early in the morning. High around 60. Light wind.
	Lo: 45°F
	Hi: 60°F	Sunday: Partly sunny. High around 60. Light wind.
	Lo: 41°F
	Hi: 59°F	Monday: Partly sunny. High in the upper 50s.
	Lo: 49°F
	Hi: 51°F	Tuesday: Mostly cloudy with a 30 percent chance of rain. High in the lower 50s.
	Lo: 39°F
	Hi: 51°F	Wednesday: Partly cloudy. Low in the upper 30s. High in the lower 50s.
	Lo: 39°F
	Hi: 51°F	Wednesday: Partly cloudy. Low in the upper 30s. High in the lower 50s.
	Lo: 39°F

Moon, Sunrise and Sunset

	Moon Phase: Waxing Crescent Moon	Civil Twilight: 6:18 AM CST	Sunrise: 6:47 AM CST
		Sunset: 4:44 PM CST	Civil Twilight: 5:13 PM CST

Normal Climate

Normal Temperatures

(ST LOUIS SCIENCE CTR Weather station, 3.90 miles from St. Louis)

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Max °F	37.8	44.5	54.9	66.3	76.8	85.7	90.5	88.0	80.7	69.4	54.4	42.2	65.9
Mean °F	29.5	35.3	45.7	56.6	66.8	75.9	80.7	78.3	70.7	59.4	46.0	34.6	56.6
Min °F	21.2	26.1	36.5	46.9	56.8	66.1	70.9	68.6	60.7	49.4	37.5	26.9	47.3

Normal Precipitation