Huntsville climate — normals and trends
Huntsville (United States) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 15.8 °C and it receives 1,302 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (25.9 °C on average) and the coldest is January (4.6 °C). Rainfall peaks in March.
Huntsville averages 50 frost days, 69 hot days (≥ 30 °C) and 126 rainy days per year.
Huntsville has warmed by +1.4 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.
The number of frost days there went from about 56 to 44 per year over the period.
The hottest day of the period reached 40.6 °C (on 28 July 1952) and the coldest -26.4 °C (on 21 January 1985).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
HuntsvilleAlabama
- coords
- 34.73°, -86.59°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.8°C
Average daily high
21.1°C
Average daily low
11.0°C
Annual rainfall
1,302mm
Sunshine / day
9.0h
Mean relative humidity
71%
Average peak wind
13.7km/h
Seasonal range
21.3°C
Frost days (< 0 °C)
50 d/yr
Hot days (≥ 30 °C)
69 d/yr
Rainy days (≥ 1 mm)
126 d/yr
Annual snowfall
9.6 cm
Average feels-like high
21.2 °C
Average feels-like low
9.8 °C
Average peak gust
34.3 km/h
Tropical nights (≥ 20 °C)
79 d/yr
Solar radiation
15.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.4 °C
since 1940
+0.2 °C per decade · r² = 0.29 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
40.6 °C
28 July 1952
Coldest day
-26.4 °C
21 January 1985
Wettest day
196 mm
5 September 2011
Windiest day
41.6 km/h
30 August 2005
Strongest gust
115.6 km/h
25 December 2009
Hottest feels-like
43.4 °C
1 July 2012
Coldest feels-like
-31.7 °C
21 January 1985
Snowiest day
20.6 cm
13 February 1960
Sunniest day
14.0 h
20 June 1940
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 8.1 °C | -1.3 °C | 93 mm | -38 mm |
| Feb | 14.9 °C | +3.0 °C | 122 mm | -7 mm |
| Mar | 19.9 °C | +3.5 °C | 147 mm | -5 mm |
| Apr | 23.7 °C | +2.2 °C | 148 mm | +25 mm |
| May | 24.8 °C | -0.9 °C | 243 mm | +138 mm |
| Jun | 29.7 °C | 0.0 °C | 157 mm | +70 mm |
| Jul | 32.0 °C | +1.0 °C | 47 mm | -56 mm |
| Aug | 30.3 °C | -0.5 °C | 60 mm | -18 mm |
| Sep | 29.8 °C | +2.0 °C | 53 mm | -35 mm |
| Oct | 23.2 °C | +0.9 °C | 109 mm | +33 mm |
| Nov | 17.8 °C | +2.0 °C | 74 mm | -31 mm |
| Dec | 12.5 °C | +1.5 °C | 60 mm | -68 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Huntsville?
Huntsville has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 15.8 °C and it receives 1,302 mm of precipitation per year.
What is the hottest day ever recorded in Huntsville?
The hottest day measured in Huntsville between 1940 and 2025 was 28 July 1952, reaching 40.6 °C.
What is the coldest day in Huntsville?
The coldest day measured in Huntsville between 1940 and 2025 was 21 January 1985, at -26.4 °C.
Does it snow in Huntsville?
Yes. Huntsville gets on average 9.6 cm of snow per year and has around 50 frost days.
Has the climate of Huntsville warmed?
Yes: Huntsville warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Huntsville?
The wettest day measured in Huntsville between 1940 and 2025 was 5 September 2011, with 196 mm of rain in 24 hours.
What was the windiest day in Huntsville?
The windiest day measured in Huntsville between 1940 and 2025 was 30 August 2005, with winds reaching 41.6 km/h.
What is the warmest month in Huntsville?
The warmest month in Huntsville is July (25.9 °C on average); the coldest is January (4.6 °C).
How much does it rain in Huntsville?
Huntsville receives on average 1,302 mm of precipitation per year, spread over about 126 rainy days.
Is it sunny in Huntsville?
Huntsville gets on average 9.0 hours of sunshine per day, roughly 3,285 hours per year over 1940-2025.
What is the biggest single-day snowfall in Huntsville?
The heaviest 24-hour snowfall measured in Huntsville between 1940 and 2025 was 13 February 1960, with 20.6 cm.
Are there tropical nights in Huntsville?
Yes: Huntsville has on average 79 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Huntsville?
In Huntsville, between 1940 and 2025, the highest apparent temperature reached 43.4 °C on 1 July 2012, and the lowest was -31.7 °C on 21 January 1985.
Compare Huntsville with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Huntsville