
Sumter National Forest
- Annual mean
- 16.3 °C
- Warmest month
- July
- Wettest month
- June
Review temperature, precipitation, humidity, and wind normals across the twelve-month annual cycle
At the representative location for Congaree National Park, monthly mean temperatures range from 6.2 to 28.2 °C (1991–2020). Compare precipitation, humidity, wind, and daylight for each month.
Tracing the interaction of historical monthly temperature ranges and daily precipitation trends
Analyze annual shifts across average temperatures, daily precipitation rates, and calculated daylight.
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | 6.2 °C-7.4° to 21.5° | 3.1 mm/day | 81.1% | 3.8 m/s | 10 hours |
| February | 8.1 °C-5.2° to 22.7° | 3.2 mm/day | 81% | 3.9 m/s | 10.8 hours |
| March | 12.1 °C-3.2° to 25.5° | 3.1 mm/day | 78.9% | 4.1 m/s | 11.8 hours |
| April | 17.1 °C2.2° to 29° | 2.7 mm/day | 74.8% | 4.1 m/s | 12.9 hours |
| May | 22.3 °C8.3° to 33.7° | 2.9 mm/day | 70.4% | 3.6 m/s | 13.8 hours |
| June | 26.2 °C15.3° to 36.8° | 4.1 mm/day | 69.8% | 3.2 m/s | 14.2 hours |
| July | 28.2 °C19.4° to 37.7° | 4.1 mm/day | 68.5% | 3 m/s | 14 hours |
| August | 27.2 °C17.5° to 37.4° | 4 mm/day | 71% | 2.9 m/s | 13.2 hours |
| September | 23.9 °C11.8° to 34.7° | 3.5 mm/day | 71.5% | 3.3 m/s | 12.2 hours |
| October | 18.1 °C3.3° to 30.9° | 2.8 mm/day | 71.9% | 3.5 m/s | 11.1 hours |
| November | 11.9 °C-2.3° to 26.2° | 2.5 mm/day | 73.1% | 3.5 m/s | 10.2 hours |
| December | 7.8 °C-4.9° to 22.9° | 3 mm/day | 79.2% | 3.6 m/s | 9.8 hours |
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.
Compare long term monthly averages for temperature, wind, relative humidity, and daylight duration.
Interactive climate map
Open the climate map to compare monthly temperature, precipitation, and other averages.
Contrast temperature, precipitation, and wind patterns across different regional park systems







Explore the map, landscapes, and protection details for Congaree National Park.