Sumter Weather Records

Sumter, South Carolina weather averages and records from 1901–2024 based on data made available by the NOAA.
All-Time Recorded High
The highest temperature ever recorded in Sumter, South Carolina was 105 °F which occurred on July 9, 1986.
Highest Temperatures: All-Time By Year
All-Time Recorded Low
The lowest temperature ever recorded in Sumter, South Carolina was 2 °F which occurred on January 21, 1985.
Lowest Temperatures: All-Time By Year
Sumter Weather by Month
Averages based on the years 1991–2020
Month Average (°F) Record (°F) Average (inches)
High ☀️ Low 🌙 High ☀️ Low 🌙 Precipitation 💧 Snow ❄️
January 55.9 32.8 83 2 3.8 0.3
February 59.0 35.1 86 4 3.5 0.0
March 67.1 41.1 97 11 3.5 0.0
April 75.5 49.2 94 25 3.4 0.0
May 81.9 58.0 104 36 3.8 0.0
June 87.8 66.2 103 43 5.1 0.0
July 90.7 69.9 105 52 5.6 0.0
August 88.8 68.6 105 50 4.9 0.0
September 84.0 63.1 102 38 4.4 0.0
October 75.0 51.2 100 24 3.9 0.0
November 65.5 40.2 90 16 3.0 0.0
December 57.8 35.3 84 8 3.8 0.0
Entire year 74.1 51.0 105 2 48.3 0.3
More Sumter Weather Records
1901–2024
Highest daily low 86 °F June 30, 1902
Lowest daily high 21 °F December 23, 1989
Greatest daily range
(Difference of high and low)
55 °F May 19, 1997
Greatest difference in daily high
over two conscutive days
42 °F Feb 17–18, 1989
Most daily precipitation 10.7 inches October 4, 2015
Most monthly precipitation 24.6 inches October 2015
Most yearly precipitation 70.7 inches 1959
Most yearly days with precipitation 152 1989
Earliest snow in season December 12 1958
Latest snow in season March 12 2017
Most daily snow 6.0 inches March 12, 1960
Most monthly snow 11.0 inches March 1960
Most yearly snow 11.0 inches 1960
Most snow in a winter 11.0 inches 1959–1960
Greatest snow accumulation 6.0 inches March 12, 1960
Earliest freeze October 4 1974
Earliest day ≥ 90 °F March 17 1945
Earliest day ≥ 100 °F May 23 1941
Latest freeze April 22 1991
Latest day ≥ 90 °F November 3 1929
Latest day ≥ 100 °F October 5 1954
Most days in a year < 32 °F 77 2010
Most days in a year ≥ 80 °F 210 1945
Most days in a year ≥ 90 °F 114 1954
Most days in a year ≥ 100 °F 17 1954
Sumter Weather Streaks
Most consecutive days...
With precipitation 13 days Sep 25 – Oct 7, 2015
Without precipitation 39 days Oct 16 – Nov 23, 2001
High temperature ≥ 80 °F 138 days May 23 – Oct 7, 1954
High temperature ≥ 90 °F 52 days Jun 17 – Aug 7, 1993
High temperature ≥ 100 °F 8 days Jul 8–15, 1986
Plant Hardiness Zone
8B
Sumter is in plant hardiness zone 8B
based on average yearly minimum temperature from 1991–2020
Sumter Weather by Year
More Sumter Weather
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Weather Station Details
Years Station Coordinates
1901–2024 Sumter location