Greenville, SC Climate & Monthly Averages
The climate of Greenville
Greenville runs on a dry-summer rhythm: the warmest months are also the driest. June averages 3.2 inches (82 mm) while the wet season peaks in December at 5.5 inches (139 mm). Highs range from 51°F (10°C) to 89°F (32°C).
Climate quick facts
- Hottest month: July - highs near 89°F (32°C)
- Coldest month: January - highs near 51°F (10°C)
- Decade extremes (2015-2024): 98°F (36°C) high · 7°F (-14°C) low
- Wettest month: December (9 rainy days) · Sunniest: July (11.8 h sun/day)
- Climate type: humid subtropical
- Annual swing: 21°C between the average warmest and coolest month · day to night: 10°C
- Snow: about 2 days a year
- Months averaging 30°C or hotter: 2
- Average humidity: 70%
Temperatures through the year
At its warmest, in July, Greenville runs to 89°F (32°C) in the afternoon and back to 71°F (22°C) by dawn. January is the coolest month, with highs of 51°F (10°C) and lows near 34°F (1°C). The gridded 2015-2024 daily record for this location tops out at 98°F (36°C) and bottoms at 7°F (-14°C) - decade extremes, not all-time station records. Snow falls on roughly 2 days a year, mostly December through February.
Rain, sun and snow
Three of the twelve months pair mild highs with fewer than twelve wet days; the longest unbroken run is April through May. December is the wettest month at 5.5 inches (139 mm) over 9 days; June is the driest. Sunshine averages 9.2 hours a day over the year, peaking in July at 11.8 hours.
How Greenville compares
- Greenville sits close to the middle of our dataset on most measures: 61°F (16°C) as an annual average, 50.3 inches (1278 mm) of precipitation and 9.2 hours of sun a day.
Ranked against every city in our dataset, each measured on the same ten-year window.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 51° | 34° | 10 | 5.1 in | 6.8 h/day | 70% |
| February | 56° | 38° | 11 | 4.6 in | 7.0 h/day | 70% |
| March | 63° | 44° | 11 | 4.1 in | 8.2 h/day | 66% |
| April | 71° | 50° | 9 | 4.8 in | 10.1 h/day | 65% |
| May | 79° | 59° | 10 | 4.1 in | 10.8 h/day | 69% |
| June | 86° | 67° | 12 | 3.2 in | 11.6 h/day | 68% |
| July | 89° | 71° | 14 | 3.7 in | 11.8 h/day | 71% |
| August | 87° | 70° | 13 | 3.4 in | 11.0 h/day | 73% |
| September | 82° | 65° | 10 | 4.5 in | 10.0 h/day | 71% |
| October | 72° | 54° | 7 | 3.3 in | 8.8 h/day | 72% |
| November | 61° | 44° | 8 | 4.0 in | 7.6 h/day | 70% |
| December | 54° | 38° | 9 | 5.5 in | 6.1 h/day | 75% |
Greenville month by month
Greenville weather in January
January brings highs around 51°F (10°C), lows near 34°F (1°C), about 10 wet days - typically the coldest month of the year in Greenville.
Greenville weather in February
February brings highs around 56°F (13°C), lows near 38°F (3°C), about 11 wet days.
Greenville weather in March
March brings highs around 63°F (17°C), lows near 44°F (6°C), about 11 wet days.
Greenville weather in April
April brings highs around 71°F (21°C), lows near 50°F (10°C), about 9 wet days.
Greenville weather in May
May brings highs around 79°F (26°C), lows near 59°F (15°C), about 10 wet days.
Greenville weather in June
June brings highs around 86°F (30°C), lows near 67°F (19°C), about 12 wet days - typically the driest month of the year in Greenville.
Greenville weather in July
July brings highs around 89°F (32°C), lows near 71°F (22°C), about 14 wet days - typically the hottest month and the sunniest month of the year in Greenville.
Greenville weather in August
August brings highs around 87°F (30°C), lows near 70°F (21°C), about 13 wet days.
Greenville weather in September
September brings highs around 82°F (28°C), lows near 65°F (18°C), about 10 wet days.
Greenville weather in October
October brings highs around 72°F (22°C), lows near 54°F (12°C), about 7 wet days.
Greenville weather in November
November brings highs around 61°F (16°C), lows near 44°F (6°C), about 8 wet days.
Greenville weather in December
December brings highs around 54°F (12°C), lows near 38°F (4°C), about 9 wet days - typically the wettest month of the year in Greenville.
Seasons in Greenville
Spring (March through May)
Through spring, Greenville is pleasantly warm: 71°F (22°C) by day, 51°F (11°C) after dark, and rain falls on around 30 of the 90 days.
Summer (June through August)
Summer in Greenville brings hot afternoons, with daytime highs averaging 87°F (31°C) and nights around 69°F (21°C); rain falls on around 39 of the 90 days. Daylight is generous - around 11.5 hours of sun a day. With the moisture factored in, afternoons feel hotter than the reading suggests - the humidity and dew point converter shows why.
Fall (September through November)
Through fall, Greenville is pleasantly warm: 72°F (22°C) by day, 54°F (12°C) after dark, and expect showers on roughly 25 days across the season.
Winter (December through February)
Through winter, Greenville is chilly: 54°F (12°C) by day, 37°F (3°C) after dark, and expect showers on roughly 30 days across the season.
Climate questions, answered
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How warm is Greenville on average?
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How humid does Greenville get?
Best time to visit Greenville
Aim for March to May and September to November if you get the choice: the dry season is running but the afternoons are still bearable, and highs average 71°F (22°C) against roughly 9 wet days a month. For the same question asked the other way round, see where else is warm in March.
Pack for Greenville with light clothing for the warm months, a warm jacket and layers for the cooler season and a compact umbrella or rain shell. July nights average 71°F (22°C), so evenings rarely match the afternoons.
Greenville temperature records (2015-2024)
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ.