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1971-2000 Climate Normals

Station: 388440 - Sumter
Station type: COOP - TP what is this?
City, State: Sumter, SC       County: Sumter County
Latitude: 33.936° N      Longitude: 80.357° W
Elevation: 177 feet above sea level
Climate division: SC06 - Central
River basin: Black
Supported by: NOAA National Weather Service

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Monthly Normals
388440 - Sumter (COOP)
Sumter, SC       Sumter County
33.936N    -80.357W

Jan Feb Mar Apr May June Jul Aug Sept Oct Nov Dec Ann.
What is This? Normal Monthly Maximum Temperature56.2 °F 60.6 °F 68.5 °F 76.5 °F 83.3 °F 88.9 °F 91.8 °F 90.1 °F 85.2 °F 76.1 °F 67.7 °F 58.9 °F 75.3 °F
What is This? Normal Monthly Minimum Temperature33.6 °F 35.7 °F 42.3 °F 49.2 °F 57.5 °F 65.1 °F 69.5 °F 67.9 °F 62.6 °F 50.4 °F 42 °F 35.6 °F 51 °F
What is This? Normal Monthly Mean Temperatures44.9 °F 48.2 °F 55.4 °F 62.9 °F 70.4 °F 77 °F 80.7 °F 79 °F 73.9 °F 63.3 °F 54.9 °F 47.3 °F 63.2 °F
What is This? Normal Monthly Precipitation4.7 in. 3.59 in. 4.37 in. 2.94 in. 3.47 in. 5.42 in. 5.48 in. 5.04 in. 4.17 in. 3.06 in. 2.86 in. 3.55 in. 48.6 in.
What is This? Normal Cooling Degree Days0 0 21 57 189 360 485 434 271 75 15 6 1913
What is This? Normal Heating Degree Days634 472 319 121 21 0 0 0 4 130 319 557 2577
What is This? Highest Mean Temperature60 °F 56.3 °F 62.2 °F 67.8 °F 74.4 °F 80.7 °F 85.1 °F 82.3 °F 78.9 °F 69 °F 62.9 °F 57.4 °F 85.1 °F
What is This? Median Monthly Mean Temperature44.2 °F 48.4 °F 55.1 °F 63 °F 70.6 °F 77.5 °F 80.5 °F 78.8 °F 73.6 °F 63.2 °F 55.1 °F 47.7 °F 62.9 °F
What is This? Lowest Mean Temperature35.7 °F 41.2 °F 50 °F 57.1 °F 65.3 °F 73 °F 77.8 °F 74.5 °F 69.9 °F 56.3 °F 49.3 °F 37.7 °F 35.7 °F
What is This? Year of Highest Mean Temperature1974 1976 1974 1977 2000 1981 1993 1999 1980 1984 1985 1971 1993
What is This? Year of Lowest Mean Temperature1977 1978 1996 1983 1992 1992 1975 1981 1981 1987 1976 1989 1977



Official daily normals are calculated by the National Climatic Data Center using a linear interpolation of the monthly normals. Since the daily normals do not account for daily climate variability, the State Climate Office of North Carolina provides a daily normal 'range' that incorporates the historical variations in climate for any given day. More details on this technique are available in:

Holder, C., R. Boyles, P. Robinson, S. Raman, and G. Fishel (2006). Calculating a Daily Normal Temperature Range that Reflects Daily Temperature Variability. Bulletin of the American Meteorological Society, Vol. 87, pp 769-774.

Normal Daily Maximum Temperature
The 30-year normal value for maximum temperatures each day.
388440 - Sumter (COOP)
Sumter, SC       Sumter County
33.936N    -80.357W

show/hide Normal Daily Maximum Temperature Table



Normal Daily Minimum Temperature
The 30-year normal value for minimum temperatures each day.
388440 - Sumter (COOP)
Sumter, SC       Sumter County
33.936N    -80.357W

show/hide Normal Daily Minimum Temperature Table



Normal Daily Mean Temperature
The 30-year normal value for mean temperatures for each day.
388440 - Sumter (COOP)
Sumter, SC       Sumter County
33.936N    -80.357W

show/hide Normal Daily Mean Temperature Table



Normal Precipitation by Day

388440 - Sumter (COOP)
Sumter, SC       Sumter County
33.936N    -80.357W

show/hide Normal Daily Precipitation Table

Normal Cooling Degree Days (CDD) by Day
The 30-year normal value for cooling degree days for each day. Base 65 F
388440 - Sumter (COOP)
Sumter, SC       Sumter County
33.936N    -80.357W

show/hide Normal Daily Cooling Degree Days Table

Normal Heating Degree Days (HDD) by Day
The 30-year normal value for heating degree days for each day. Base 65 F
388440 - Sumter (COOP)
Sumter, SC       Sumter County
33.936N    -80.357W

show/hide Normal Daily Heating Degree Days Table