Huntsville climate
Huntsville (Alabama, United States) has a humid subtropical climate (Köppen Cfa). The average temperature over the year is 16 °C61 °F, and about 1,396 mm55 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Huntsville climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 949 | −131 | 440 | 1194.7 | 19 |
| Feb | 1253 | 134 | 644 | 1355.3 | 14 |
| Mar | 1762 | 542 | 1152 | 1254.9 | 6 |
| Apr | 2271 | 1050 | 1661 | 1254.9 | 0 |
| May | 2679 | 1559 | 2169 | 1184.6 | 0 |
| Jun | 3087 | 2067 | 2577 | 1034.0 | 0 |
| Jul | 3290 | 2171 | 2780 | 1214.8 | 0 |
| Aug | 3391 | 2170 | 2780 | 1044.1 | 0 |
| Sep | 3085 | 1763 | 2374 | 993.9 | 0 |
| Oct | 2374 | 1151 | 1763 | 933.7 | 0 |
| Nov | 1762 | 440 | 1051 | 1054.1 | 6 |
| Dec | 1152 | 134 | 643 | 1515.9 | 15 |
| Year | 3391 | −131 | 1661 | 1,39655 | 61 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 84% | 60% | 2.5 | 10:04 |
| Feb | 84% | 65% | 3.0 | 10:53 |
| Mar | 82% | 60% | 4.2 | 11:52 |
| Apr | 79% | 53% | 5.5 | 13:01 |
| May | 78% | 54% | 6.0 | 13:58 |
| Jun | 75% | 51% | 6.3 | 14:28 |
| Jul | 73% | 54% | 6.1 | 14:16 |
| Aug | 70% | 52% | 5.6 | 13:27 |
| Sep | 70% | 46% | 4.9 | 12:20 |
| Oct | 71% | 45% | 3.9 | 11:14 |
| Nov | 76% | 48% | 2.9 | 10:17 |
| Dec | 84% | 61% | 2.2 | 9:50 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Huntsville is like
The warmest month is July, with an average high of 32 °C90 °F and a low of 21 °C71 °F. The coldest is January, when highs average 9 °C49 °F and lows −1 °C31 °F. Seasons are strongly marked: the warmest month is on average 22.6 °C40.7 °F warmer than the coldest.
It is wet, with about 1,396 mm55 in of precipitation per year. Rain is spread fairly evenly through the year. The wettest month is December (151 mm5.9 in), the driest is October (93 mm3.7 in).
Relative humidity ranges from 70% in September to 84% in January. The clearest skies (lowest average cloud amount, 45%) are typical of October. Average wind speed near the ground ranges from 3 km/h (2 mph) in July to 5 km/h (3 mph) in February. Daylight lasts from about 9.8 hours in December to 14.5 hours in June.
Best time to visit Huntsville
Based on these averages, the most comfortable months for sightseeing and outdoor activities are October: average highs of 23 °C74 °F to 23 °C74 °F with 93 mm3.7 in to 93 mm3.7 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of 9 °C49 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Huntsville
- Winter (December–February) — highs 949 to 12 °C53 °F, lows −131 to 1 °C34 °F, about 135 mm5.3 in of precipitation a month. Pack a warm coat, layers and closed shoes, an extra layer for the cooler mornings and evenings and an umbrella or light rain jacket.
- Spring (March–May) — highs 1762 to 26 °C79 °F, lows 542 to 15 °C59 °F, about 122 mm4.8 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket, an extra layer for the cooler mornings and evenings and an umbrella or light rain jacket.
- Summer (June–August) — highs 3087 to 33 °C91 °F, lows 2067 to 21 °C71 °F, about 109 mm4.3 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and an umbrella or light rain jacket.
- Autumn (September–November) — highs 1762 to 30 °C85 °F, lows 440 to 17 °C63 °F, about 99 mm3.9 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket, an extra layer for the cooler mornings and evenings and an umbrella or light rain jacket.
How Huntsville compares
Compared with Nashville, about 161 km to the north, Huntsville is on average 1.1 °C2 °F warmer and receives a similar amount of precipitation. The difference is largest in February (1.9 °C3.5 °F warmer).
Of the 222 places in the United States covered by World Climates, Huntsville is the 92nd warmest by annual mean temperature and the 12th wettest by annual precipitation. See all of them on the United States climate page.
Places in other countries with the most similar temperature and rainfall pattern: Taozhou (China, Cfa), Yiwu (China, Cfa) and Puyang (China, Cfa).
Nearby places
- Chattanooga 122 km · 16 °C61 °F · 1,355 mm53 in
- Murfreesboro 125 km · 15 °C59 °F · 1,367 mm54 in
- Birmingham 136 km · 17 °C62 °F · 1,369 mm54 in
- Nashville 161 km · 15 °C59 °F · 1,351 mm53 in
- Tuscaloosa 192 km · 18 °C64 °F · 1,415 mm56 in
- Clarksville 212 km · 15 °C58 °F · 1,316 mm52 in
- Sandy Springs 222 km · 16 °C61 °F · 1,292 mm51 in
- Atlanta 230 km · 16 °C61 °F · 1,260 mm50 in
Frequently asked questions
What is the warmest month in Huntsville?
July is the warmest month in Huntsville, with an average high of 32 °C (90 °F) and an average low of 21 °C (71 °F).
What is the coldest month in Huntsville?
January is the coldest month, with an average high of 9 °C (49 °F) and an average low of -1 °C (31 °F).
When does it rain the most in Huntsville?
December is the wettest month with about 151 mm (5.9 in) of precipitation; October is the driest with about 93 mm (3.7 in).
What is the best time to visit Huntsville?
Judging by long-term averages, the most comfortable months are October.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.