Huntsville climate — normals and trends
Huntsville (United States) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 19.7 °C and it receives 1,075 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 (28.3 °C on average) and the coldest is January (9.7 °C). Rainfall peaks in May.
Huntsville averages 13 frost days, 125 hot days (≥ 30 °C) and 113 rainy days per year.
Huntsville has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.
The number of frost days there went from about 16 to 10 per year over the period.
The hottest day of the period reached 42.5 °C (on 27 August 2023) and the coldest -15.2 °C (on 23 December 1989).
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
HuntsvilleTexas
- coords
- 30.72°, -95.55°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
19.7°C
Average daily high
25.2°C
Average daily low
14.9°C
Annual rainfall
1,075mm
Sunshine / day
9.2h
Mean relative humidity
73%
Average peak wind
15.3km/h
Seasonal range
18.6°C
Frost days (< 0 °C)
13 d/yr
Hot days (≥ 30 °C)
125 d/yr
Rainy days (≥ 1 mm)
113 d/yr
Annual snowfall
1.4 cm
Average feels-like high
26.3 °C
Average feels-like low
15.0 °C
Average peak gust
34.4 km/h
Tropical nights (≥ 20 °C)
136 d/yr
Solar radiation
16.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.45 · 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
42.5 °C
27 August 2023
Coldest day
-15.2 °C
23 December 1989
Wettest day
155 mm
10 August 1957
Windiest day
51.2 km/h
12 September 1961
Strongest gust
128.5 km/h
12 September 1961
Hottest feels-like
46.0 °C
27 June 1980
Coldest feels-like
-21.2 °C
23 December 1989
Snowiest day
10.2 cm
16 January 1964
Sunniest day
13.4 h
12 June 2020
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 | 13.0 °C | -2.0 °C | 103 mm | +12 mm |
| Feb | 18.4 °C | +1.2 °C | 108 mm | +23 mm |
| Mar | 24.7 °C | +3.6 °C | 64 mm | -30 mm |
| Apr | 27.6 °C | +2.4 °C | 64 mm | -45 mm |
| May | 30.6 °C | +1.7 °C | 160 mm | +41 mm |
| Jun | 32.4 °C | +0.2 °C | 235 mm | +143 mm |
| Jul | 33.2 °C | -0.6 °C | 104 mm | +35 mm |
| Aug | 34.1 °C | 0.0 °C | 94 mm | +28 mm |
| Sep | 32.9 °C | +1.7 °C | 26 mm | -55 mm |
| Oct | 30.0 °C | +3.3 °C | 66 mm | -21 mm |
| Nov | 24.5 °C | +3.9 °C | 74 mm | -16 mm |
| Dec | 19.2 °C | +2.7 °C | 22 mm | -72 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 19.7 °C and it receives 1,075 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 27 August 2023, reaching 42.5 °C.
What is the coldest day in Huntsville?
The coldest day measured in Huntsville between 1940 and 2025 was 23 December 1989, at -15.2 °C.
Does it snow in Huntsville?
Yes. Huntsville gets on average 1.4 cm of snow per year and has around 13 frost days.
Has the climate of Huntsville warmed?
Yes: Huntsville warmed by +1.8 °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 10 August 1957, with 155 mm of rain in 24 hours.
What was the windiest day in Huntsville?
The windiest day measured in Huntsville between 1940 and 2025 was 12 September 1961, with winds reaching 51.2 km/h.
What is the warmest month in Huntsville?
The warmest month in Huntsville is July (28.3 °C on average); the coldest is January (9.7 °C).
How much does it rain in Huntsville?
Huntsville receives on average 1,075 mm of precipitation per year, spread over about 113 rainy days.
Is it sunny in Huntsville?
Huntsville gets on average 9.2 hours of sunshine per day, roughly 3,358 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 16 January 1964, with 10.2 cm.
Are there tropical nights in Huntsville?
Yes: Huntsville has on average 136 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 46.0 °C on 27 June 1980, and the lowest was -21.2 °C on 23 December 1989.
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