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Sumter May Weather

Averages and records for weather in Sumter, South Carolina in the month of May.

Typical Sumter May Weather 1991–2020
Average daily high	81.9 °F
Average daily low	58.0 °F
Average monthly precipitation	3.8 inches
Average monthly snow	none
Daily chance of precipitation	30.1%
Daily chance of snow	0%

Sumter May Weather Records 1901–2024
Highest temperature	104 °F	May 25, 1903
Lowest temperature	36 °F	May 19, 1997
Highest daily low	80 °F	May 31, 1913
Lowest daily high	51 °F	May 8, 1992
Hottest average high temperature	89.7 °F	1962
Coldest average high temperature	76.2 °F	2013
Most daily precipitation	3.6 inches	May 20, 1969
Most monthly precipitation	10.0 inches	2020
Most daily snow	none	-
Most monthly snow	none	-

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	78.6	53.6	93	40
May 2	78.8	53.9	94	41
May 3	79.0	54.3	94	39
May 4	79.2	54.6	96	39
May 5	79.4	54.8	94	40
May 6	79.5	55.0	95	43
May 7	79.6	55.2	94	43
May 8	79.9	55.5	95	37
May 9	80.1	55.9	95	39
May 10	80.4	56.2	96	36
May 11	80.6	56.4	94	39
May 12	80.9	56.7	96	39
May 13	81.2	57.0	96	42
May 14	81.5	57.4	97	42
May 15	81.8	57.7	96	44
May 16	82.0	58.1	97	45
May 17	82.2	58.3	97	45
May 18	82.4	58.6	97	40
May 19	82.6	58.9	97	36
May 20	83.0	59.2	98	44
May 21	83.3	59.6	98	44
May 22	83.5	60.0	98	44
May 23	83.8	60.3	100	45
May 24	83.9	60.6	100	42
May 25	84.0	60.8	104	42
May 26	84.1	61.0	100	44
May 27	84.3	61.3	99	43
May 28	84.5	61.6	99	40
May 29	84.8	61.9	100	47
May 30	85.0	62.3	98	50
May 31	85.2	62.5	100	43

Weather Station Details

Years	Station	Coordinates
1901–2024	Sumter	location