Huntsville, AL Climate & Monthly Averages
The climate of Huntsville
Huntsville averages 62°F (17°C) across the year, with 9.0 hours of sunshine a day and 57.4 inches (1458 mm) of precipitation. The spread runs from January, at 50°F (10°C), to July, at 89°F (32°C).
Climate quick facts
- Hottest month: July - highs near 89°F (32°C)
- Coldest month: January - highs near 50°F (10°C)
- Decade extremes (2015-2024): 98°F (37°C) high · 0°F (-18°C) low
- Wettest month: February (13 rainy days) · Sunniest: June (11.7 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 1 days a year
- Months averaging 30°C or hotter: 3
- Average humidity: 72%
Temperatures through the year
Warmth peaks in July: highs of 89°F (32°C), lows of 71°F (22°C). January sits at the other end of the year: 50°F (10°C) by day, 34°F (1°C) at night. Across the gridded 2015-2024 daily record, the highest daily maximum for this location was 98°F (37°C) and the lowest daily minimum 0°F (-18°C). Precipitation concentrates in February - 6.7 inches (171 mm) on 13 days - and thins out by September.
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. Sunshine averages 9.0 hours a day over the year, peaking in June at 11.7 hours. Average highs hold at or above 30°C for 3 months of the year, June through August being the unbroken run.
How Huntsville compares
- Huntsville sits close to the middle of our dataset on most measures: 62°F (17°C) as an annual average, 57.4 inches (1458 mm) of precipitation and 9.0 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 | 50° | 34° | 11 | 5.1 in | 6.5 h/day | 72% |
| February | 56° | 38° | 13 | 6.7 in | 6.2 h/day | 73% |
| March | 63° | 44° | 12 | 6.5 in | 8.0 h/day | 71% |
| April | 70° | 50° | 11 | 4.9 in | 9.7 h/day | 69% |
| May | 80° | 60° | 12 | 4.2 in | 10.9 h/day | 71% |
| June | 87° | 68° | 12 | 4.0 in | 11.7 h/day | 71% |
| July | 89° | 71° | 16 | 4.8 in | 11.6 h/day | 75% |
| August | 88° | 70° | 14 | 5.0 in | 10.8 h/day | 74% |
| September | 84° | 65° | 8 | 3.2 in | 10.1 h/day | 70% |
| October | 74° | 55° | 7 | 3.4 in | 9.0 h/day | 69% |
| November | 62° | 44° | 9 | 3.7 in | 7.5 h/day | 71% |
| December | 55° | 39° | 11 | 5.9 in | 6.1 h/day | 76% |
Huntsville month by month
Huntsville weather in January
January brings highs around 50°F (10°C), lows near 34°F (1°C), about 11 wet days - typically the coldest month of the year in Huntsville.
Huntsville weather in February
February brings highs around 56°F (13°C), lows near 38°F (3°C), about 13 wet days - typically the wettest month of the year in Huntsville.
Huntsville weather in March
March brings highs around 63°F (17°C), lows near 44°F (7°C), about 12 wet days.
Huntsville weather in April
April brings highs around 70°F (21°C), lows near 50°F (10°C), about 11 wet days.
Huntsville weather in May
May brings highs around 80°F (27°C), lows near 60°F (16°C), about 12 wet days.
Huntsville weather in June
June brings highs around 87°F (30°C), lows near 68°F (20°C), about 12 wet days - typically the sunniest month of the year in Huntsville.
Huntsville weather in July
July brings highs around 89°F (32°C), lows near 71°F (22°C), about 16 wet days - typically the hottest month of the year in Huntsville.
Huntsville weather in August
August brings highs around 88°F (31°C), lows near 70°F (21°C), about 14 wet days.
Huntsville weather in September
September brings highs around 84°F (29°C), lows near 65°F (19°C), about 8 wet days - typically the driest month of the year in Huntsville.
Huntsville weather in October
October brings highs around 74°F (24°C), lows near 55°F (13°C), about 7 wet days.
Huntsville weather in November
November brings highs around 62°F (17°C), lows near 44°F (7°C), about 9 wet days.
Huntsville weather in December
December brings highs around 55°F (13°C), lows near 39°F (4°C), about 11 wet days.
Seasons in Huntsville
Spring (March through May)
Through spring, Huntsville is mild and warm: 71°F (22°C) by day, 51°F (11°C) after dark, and rain falls on around 35 of the 90 days.
Summer (June through August)
Summer brings hot afternoons here - highs near 88°F (31°C), nights near 70°F (21°C), and rain falls on around 42 of the 90 days. Daylight is generous - around 11.4 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, Huntsville brings comfortable warmth: 74°F (23°C) by day, 55°F (13°C) after dark, and expect showers on roughly 24 days across the season.
Winter (December through February)
Winter in Huntsville stays on the cool side of mild, with daytime highs averaging 54°F (12°C) and nights around 37°F (3°C); rain falls on around 35 of the 90 days.
Climate questions, answered
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Best time to visit Huntsville
September to November and April to May is the sweet spot for Huntsville - warm days, manageable rainfall and plenty of daylight line up. Expect 74°F (23°C) in the afternoon and around 9 days of rain in a typical month of it. For the same question asked the other way round, see where else is warm in September.
Pack for Huntsville with light clothing for the warm months, a warm jacket and layers for the cooler season and a compact umbrella or rain shell. Note the gap between afternoon and night: July pairs 89°F (32°C) with 71°F (22°C).
Huntsville temperature records (2015-2024)
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ.