Living in Saint Louis, MO, Local Climate & Weather (2024) | Saint Louis, MO

Seasonal Weather Patterns in Saint Louis, MO

Temperature

Average Daily Temperature (°F)

	Saint Louis, MO	U.S. Avg.	Difference
January	28	43	-15
July	80	79	+1

Average Monthly Number of Hot and Freezing Days

	Saint Louis, MO	U.S. Avg.	Difference
Summer: Hot Days	8	11	-3
Winter: Freezing Days	20	12	+8

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Sunshine

Average Annual Number of Clear and Cloudy Days

	Saint Louis, MO	U.S. Avg.	Difference
Clear Days	90	217	-127
Cloudy Days	275	148	+127

Average Daylight Hours per Day

	Saint Louis, MO	U.S. Avg.	Difference
January	10	10	No difference
July	15	15	No difference

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Precipitation

Average Annual Number of Rainy and Snow Days

	Saint Louis, MO	U.S. Avg.	Difference
Rainy Days	112	111	+1
Snow Days	8	7	+1

Average Monthly Humidity (%) in Saint Louis, MO

	Saint Louis, MO	U.S. Avg.	Difference
January	71	68	+3%
July	71	61	+10%

Read more in Precipitation

Is Saint Louis, MO, Hot or Cold?

Low, Average, and High Temperatures (°F)

	Low	Average	High
January	24	28	40
February	27	37	45
March	36	45	55
April	47	58	67
May	56	64	78
June	65	73	84
July	69	80	89
August	69	78	89
September	60	70	82
October	47	59	69
November	38	45	55
December	26	33	43

Average Monthly Number of Hot Days

	Saint Louis, MO	U.S. Avg.	Difference
January	0	0	No difference
February	0	0	No difference
March	0	0	No difference
April	0	1	-1
May	1	3	-2
June	6	8	-2
July	10	13	-3
August	9	12	-3
September	2	6	-4
October	0	2	-2
November	0	0	No difference
December	0	0	No difference

Average Monthly Number of Freezing Days

	Saint Louis, MO	U.S. Avg.	Difference
January	23	13	+10
February	17	10	+7
March	10	7	+3
April	2	2	No difference
May	0	0	No difference
June	0	0	No difference
July	0	0	No difference
August	0	0	No difference
September	0	0	No difference
October	2	2	No difference
November	8	6	+2
December	20	12	+8

Saint Louis, MO: Clear/Cloudy Skies, and Daylight Hours

Average Number of Clear Days

	Saint Louis, MO	U.S. Avg.	Difference
January	5	17	-12
February	5	16	-11
March	7	17	-10
April	8	17	-9
May	8	18	-10
June	9	19	-10
July	10	20	-10
August	10	20	-10
September	9	19	-10
October	8	19	-11
November	6	18	-12
December	5	17	-12

Average Number of Cloudy Days

	Saint Louis, MO	U.S. Avg.	Difference
January	26	14	+12
February	23	12	+11
March	24	14	+10
April	22	13	+9
May	23	13	+10
June	21	11	+10
July	21	11	+10
August	21	11	+10
September	21	11	+10
October	23	12	+11
November	24	12	+12
December	26	14	+12

Average Daylight Hours per Day

	Saint Louis, MO	U.S. Avg.	Difference
January	10	10	No difference
February	11	11	No difference
March	12	12	No difference
April	13	13	No difference
May	14	14	No difference
June	15	15	No difference
July	15	15	No difference
August	14	14	No difference
September	13	13	No difference
October	12	12	No difference
November	10	10	No difference
December	10	10	No difference

Saint Louis, MO: Rainy Days, Snow Days, and Humidity

Average Number of Rainy Days

	Saint Louis, MO	U.S. Avg.	Difference
January	10	9	+1
February	9	8	+1
March	10	9	+1
April	10	7	+3
May	10	7	+3
June	8	7	+1
July	10	7	+3
August	10	6	+4
September	9	7	+2
October	10	7	+3
November	8	8	No difference
December	8	8	No difference

Average Number of Snow Days

	Saint Louis, MO	U.S. Avg.	Difference
January	2	2	No difference
February	2	2	No difference
March	1	1	No difference
April	0	0	No difference
May	0	0	No difference
June	0	0	No difference
July	0	0	No difference
August	0	0	No difference
September	0	0	No difference
October	0	0	No difference
November	1	1	No difference
December	2	2	No difference

Average Humidity (%)

	Saint Louis, MO	U.S. Avg.	Difference
January	71	68	+3%
February	68	66	+2%
March	64	63	+1%
April	62	59	+3%
May	66	61	+5%
June	70	60	+10%
July	71	61	+10%
August	72	62	+10%
September	71	63	+8%
October	68	63	+5%
November	70	65	+5%
December	71	68	+3%