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St. Charles May Weather

Averages and records for weather in St. Charles, Missouri in the month of May.

Typical St. Charles May Weather 1991–2020
Average daily high	75.0 °F
Average daily low	54.2 °F
Average monthly precipitation	5.7 inches
Average monthly snow	none
Daily chance of precipitation	37.2%
Daily chance of snow	0%

St. Charles May Weather Records 1893–2024
Highest temperature	101 °F	May 31, 1934
Lowest temperature	30 °F	May 2, 1978
Highest daily low	74 °F	May 26, 1953
Lowest daily high	43 °F	May 4, 2013
Hottest average high temperature	85.1 °F	1934
Coldest average high temperature	69.1 °F	1995
Most daily precipitation	4.8 inches	May 17, 1995
Most monthly precipitation	13.3 inches	1995
Most daily snow	1.0 inches	May 2, 1929
Most monthly snow	1.0 inches	1929

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°F)		Record (°F)
Day	High	Low	High	Low
May 1	70.8	49.0	91	30
May 2	71.0	49.4	92	30
May 3	71.3	49.6	94	33
May 4	71.5	50.0	93	32
May 5	71.7	50.2	95	34
May 6	72.1	50.6	92	33
May 7	72.3	50.9	95	34
May 8	72.6	51.2	92	33
May 9	73.0	51.7	93	34
May 10	73.3	52.1	93	31
May 11	73.7	52.4	90	34
May 12	74.0	52.9	95	34
May 13	74.3	53.3	93	38
May 14	74.7	53.7	93	34
May 15	75.1	54.1	93	38
May 16	75.4	54.5	92	35
May 17	75.8	54.9	93	38
May 18	76.1	55.3	93	37
May 19	76.5	55.6	92	36
May 20	76.8	55.9	93	38
May 21	76.9	56.3	95	40
May 22	77.1	56.5	93	39
May 23	77.2	56.8	98	38
May 24	77.4	57.0	93	42
May 25	77.6	57.3	96	32
May 26	77.8	57.6	100	39
May 27	78.1	58.0	95	40
May 28	78.5	58.4	94	39
May 29	78.9	58.8	97	41
May 30	79.3	59.3	101	40
May 31	79.6	59.7	101	41

Weather Station Details

Years	Station	Coordinates
1893–2024	St. Charles Elm Point	location