Park climate1991–2020 climate normals179 m source elevationNASA POWER

Twelve month analysis of atmospheric normals for a representative point in South Carolina

Sumter National Forest Climate: Monthly Temperature, Precipitation, and Atmospheric Averages

Name: Sumter National Forest monthly climate normals
Creator: NASA POWER

Detailed climatology profile for Sumter National Forest, providing long-term representative-point measurements for the 1991 to 2020 period. This data documents consistent monthly patterns for minimum, mean, and maximum temperatures, average daily precipitation, relative humidity, wind speed, and daylight duration. Measurements reflect localized records at an elevation of 178.68 meters rather than region-wide weather or current seasonal forecasts.

View park overview Browse climate zones

A graphic illustration featuring a tall waterfall dropping into a valley between rocky cliffs, surrounded by pine trees under a pastel-colored cloudy sky.

Annual climate pattern

Analysis of twelve month average temperatures and daily precipitation rates across the region

Sumter National Forest Annual Climate Normals and Monthly Temperature Patterns

Long-term climatology records for Sumter National Forest track average minimum, mean, and maximum temperatures moving from winter lows to summer peaks across the calendar year. Average daily precipitation rates accompany these monthly thermal shifts to document baseline conditions at a representative coordinate.

Mean temperatureAverage minimum–maximum rangePrecipitation

Annual mean: 16.3 °C
Warmest month: July
Coolest month: January
Wettest month: June

Twelve-month climate

Compare average temperature bounds, precipitation rates, humidity, wind, and daylight across the year

Sumter National Forest Weather by Month: Complete Twelve-Month Climate Records

Examine twelve months of long-term climate normals for Sumter National Forest to track shifts in average temperature bounds and daily precipitation rates across the calendar year. Detailed monthly records for relative humidity, wind speed, and calculated daylight hours provide a complete multi-variable baseline for this representative coordinate.

	Mean temperature	Precipitation	Humidity	Wind speed	Daylight
January	5 °C-8.2° to 20.1°	3.4 mm/day	82%	2.2 m/s	10 hours
February	6.9 °C-6.3° to 21.6°	3.4 mm/day	81.2%	2.2 m/s	10.7 hours
March	11 °C-4.1° to 25.1°	3.6 mm/day	79.3%	2.3 m/s	11.8 hours
April	16 °C1.1° to 29°	3 mm/day	76.5%	2.3 m/s	12.9 hours
May	21.1 °C7° to 33.3°	2.8 mm/day	73.5%	2 m/s	13.8 hours
June	25.3 °C13.8° to 37°	3.6 mm/day	71.1%	1.7 m/s	14.3 hours
July	27.5 °C17.7° to 38.4°	3.4 mm/day	68.7%	1.6 m/s	14.1 hours
August	26.5 °C16.3° to 38.1°	3.5 mm/day	69.7%	1.5 m/s	13.3 hours
September	22.9 °C10.4° to 35.1°	3.2 mm/day	70.9%	1.8 m/s	12.2 hours
October	16.7 °C2° to 30.8°	2.7 mm/day	72.7%	1.9 m/s	11.1 hours
November	10.5 °C-3.1° to 25.4°	3 mm/day	75%	2 m/s	10.2 hours
December	6.4 °C-5.7° to 21.2°	3.4 mm/day	81%	2 m/s	9.7 hours

Compare two months

See two months side by side and how much they differ. Both use the same 1991–2020 climate normals and NASA POWER data point as the table above, so they show typical conditions, not a forecast.

First month

Second month

Mean temperature: January: 5 °C; July: 27.5 °C; Change from January to July: +22.5 °C
Precipitation: January: 3.4 mm/day; July: 3.4 mm/day; Change from January to July: 0 mm/day
Daylight: January: 10 hours; July: 14.1 hours; Change from January to July: +4.1 hours

Calculated climate highlights

Comparative monthly normals for temperature, precipitation, wind, humidity, and daylight duration

Sumter National Forest Monthly Climate Highlights and Calculated Annual Averages

Calculated monthly normals trace the high and low points of temperature, precipitation, wind, humidity, and daylight across twelve sampled periods. These comparative values summarize baseline climatology records for a representative coordinate without representing observed weather extremes.

Warmest month: July27.5 °C
Coolest month: January5 °C
Wettest month: June3.6 mm/day
Driest month: October2.7 mm/day
Most humid month: January82%
Windiest month: March2.3 m/s
Longest daylight: June14.3 hours

Interactive climate map

National park climate map

Open the climate map to compare monthly temperature, precipitation, and other averages.

Global National Park Climate Map

Other park climates

Month-by-month atmospheric patterns across diverse regional settings and protected landscapes

Comparing Sumter National Forest Climate With Other Protected Area Profiles

Standardized monthly climate profiles enable detailed comparison of annual temperature, precipitation, humidity, wind, and daylight records across various geographic settings. Evaluating these patterns alongside Sumter National Forest provides broader atmospheric context without implying direct climatic equivalence or regional matching.