Updated October 2026
Congaree National Park Weather by Month
Congaree National Park is warmest in July, when the nearest NOAA climate station averages a high of 91°F and a low of 71°F, and coldest in January, with an average high of 58°F and an average low of 35°F. June is the wettest month, with about 5.5 inches of precipitation.
These figures are NOAA's 1991–2020 climate normals, the 30-year average for each calendar month, from the nearest long-record weather station, 15.1 miles from the park's reference point. A single station cannot describe a whole park: temperatures elsewhere in Congaree National Park can differ from these, particularly with elevation.
Warmest month
Jul
91°F avg high
Coldest month
Jan
35°F avg low
Wettest month
Jun
5.5 in avg
Longest days
Jun
14.2 h of daylight
Average weather at Congaree by month
| Month | Avg high | Avg low | Precipitation | Daylight |
|---|---|---|---|---|
| January | 58°F | 35°F | 3.8 in | 10.0 h |
| February | 62°F | 38°F | 3.6 in | 10.8 h |
| March | 69°F | 43°F | 3.8 in | 11.7 h |
| April | 77°F | 51°F | 3.0 in | 12.8 h |
| May | 83°F | 60°F | 3.2 in | 13.8 h |
| June | 88°F | 67°F | 5.5 in | 14.2 h |
| July | 91°F | 71°F | 4.5 in | 14.0 h |
| August | 90°F | 70°F | 4.9 in | 13.3 h |
| September | 86°F | 64°F | 3.4 in | 12.2 h |
| October | 77°F | 53°F | 3.4 in | 11.1 h |
| November | 68°F | 43°F | 3.1 in | 10.2 h |
| December | 61°F | 37°F | 3.9 in | 9.8 h |
| Year total | 46.1 in |
NOAA 1991–2020 climate normals from station USC00389039, 15.1 miles from the park's reference point. Snowfall at the station totals about 0.8 inches in an average year. Daylight is the monthly average, computed from the park's latitude. Each month links to how crowded Congaree is at that time of year.
Congaree weather by season
Winter: December to February
Average highs bottom out at 58°F in January, between 61°F in December and 62°F in February, with average lows between 35°F and 38°F. Together the three months average 11.3 inches of precipitation, about 25% of the yearly total. Daylight is at its shortest, about 9.8 hours in December.
Spring: March to May
Average highs climb from 69°F in March to 83°F in May, with average lows between 43°F and 60°F. Together the three months average 10 inches of precipitation, about 22% of the yearly total. Daylight lengthens from about 11.7 hours in March to 13.8 in May.
Summer: June to August
Average highs peak at 91°F in July, between 88°F in June and 90°F in August, with average lows between 67°F and 71°F. The average high is 90°F or hotter in July and August. Together the three months average 14.9 inches of precipitation, about 32% of the yearly total and more than in any other season. Daylight is at its longest, about 14.2 hours in June.
Fall: September to November
Average highs fall from 86°F in September to 68°F in November, with average lows between 43°F and 64°F. Together the three months average 9.9 inches of precipitation, about 21% of the yearly total and less than in any other season. Daylight shortens from about 12.2 hours in September to 10.2 in November.
What the National Park Service says about the weather
Check the forecast before getting on the road. Conditions can change rapidly within the park. Flooding can happen with little or no warning, so make sure to check water levels for Cedar Creek and the Congaree River.
Weather description courtesy of the National Park Service — official park site.
Today's forecast for Congaree
Averages describe a typical month, not this week. For current conditions and the seven-day outlook, the National Weather Service issues a forecast for the park's reference point at 33.79°N, 80.75°W. It covers that one spot, so other elevations in the park can differ from it, as they do from the averages above.
National Weather Service forecast for Congaree National Park →
Weather and crowds together
July, the warmest month, sees about 0.8× the visitors of the park's average month. May is the busiest month of the year and January the quietest. To see those crowds set against the weather for all twelve months, read the best time to visit Congaree National Park. For hotels, cabins and rentals close to the park, see where to stay near Congaree.
Where to stay near Congaree
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Top-rated places to stay near Congaree
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Frequently Asked Questions
July is the warmest month at Congaree National Park, with an average high of 91°F and an average low of 71°F. That is the 1991–2020 average at the nearest long-record NOAA station, 15.1 miles from the park's reference point. Temperatures inside the park can differ, particularly with elevation.
January is the coldest month at Congaree National Park, with an average low of 35°F and an average high of 58°F, based on NOAA 1991–2020 climate normals.
June is the wettest month, with about 5.5 inches of precipitation. April is the driest, at about 3 inches. The station records about 46.1 inches of precipitation in an average year.
Rarely, by the station's record. The nearest long-record NOAA station, 15.1 miles from the park's reference point, totals about 0.8 inches of snow in an average year.
Weather at nearby parks
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Keep exploring
Sources: NOAA NCEI U.S. Climate Normals 1991–2020 (station USC00389039), daylight computed from latitude, weather description from the National Park Service, crowd levels from National Park Service Visitor Use Statistics (1985–2025). Updated 2026-10-11. Lodging results are provided by Stay22; WhenToVisitParks may earn a commission from bookings, at no extra cost to you.