Cullman climate — normals and trends
Cullman (United States) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 16.2 °C and it receives 1,250 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 (26.1 °C on average) and the coldest is January (5.3 °C). Rainfall peaks in March.
Cullman averages 46 frost days, 77 hot days (≥ 30 °C) and 124 rainy days per year.
Cullman has warmed by +1.3 °C between 1940 and 2025, or +0.15 °C per decade. This trend is statistically significant.
The number of frost days there went from about 50 to 42 per year over the period.
The hottest day of the period reached 40.3 °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
CullmanAlabama
- coords
- 34.17°, -86.84°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.2°C
Average daily high
21.7°C
Average daily low
11.4°C
Annual rainfall
1,250mm
Sunshine / day
9.2h
Mean relative humidity
71%
Average peak wind
14.1km/h
Seasonal range
20.8°C
Frost days (< 0 °C)
46 d/yr
Hot days (≥ 30 °C)
77 d/yr
Rainy days (≥ 1 mm)
124 d/yr
Annual snowfall
7.2 cm
Average feels-like high
21.8 °C
Average feels-like low
10.3 °C
Average peak gust
34.2 km/h
Tropical nights (≥ 20 °C)
85 d/yr
Solar radiation
16.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.3 °C
since 1940
+0.2 °C per decade · r² = 0.25 · 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
40.3 °C
28 July 1952
Coldest day
-26.4 °C
21 January 1985
Wettest day
197 mm
5 September 2011
Windiest day
44.8 km/h
30 August 2005
Strongest gust
121.3 km/h
30 August 2005
Hottest feels-like
43.9 °C
15 July 1980
Coldest feels-like
-31.8 °C
21 January 1985
Snowiest day
20.4 cm
13 March 1993
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 | 9.0 °C | -1.2 °C | 83 mm | -44 mm |
| Feb | 16.1 °C | +3.3 °C | 120 mm | -4 mm |
| Mar | 20.5 °C | +3.3 °C | 136 mm | -11 mm |
| Apr | 24.4 °C | +2.3 °C | 119 mm | 0 mm |
| May | 25.4 °C | -0.9 °C | 208 mm | +110 mm |
| Jun | 30.2 °C | +0.1 °C | 133 mm | +48 mm |
| Jul | 32.5 °C | +1.2 °C | 56 mm | -44 mm |
| Aug | 30.1 °C | -1.0 °C | 75 mm | +1 mm |
| Sep | 30.2 °C | +2.1 °C | 50 mm | -35 mm |
| Oct | 23.5 °C | +0.7 °C | 116 mm | +42 mm |
| Nov | 18.5 °C | +2.0 °C | 69 mm | -30 mm |
| Dec | 13.4 °C | +1.6 °C | 57 mm | -61 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 Cullman?
Cullman has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 16.2 °C and it receives 1,250 mm of precipitation per year.
What is the hottest day ever recorded in Cullman?
The hottest day measured in Cullman between 1940 and 2025 was 28 July 1952, reaching 40.3 °C.
What is the coldest day in Cullman?
The coldest day measured in Cullman between 1940 and 2025 was 21 January 1985, at -26.4 °C.
Does it snow in Cullman?
Yes. Cullman gets on average 7.2 cm of snow per year and has around 46 frost days.
Has the climate of Cullman warmed?
Yes: Cullman warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Cullman?
The wettest day measured in Cullman between 1940 and 2025 was 5 September 2011, with 197 mm of rain in 24 hours.
What was the windiest day in Cullman?
The windiest day measured in Cullman between 1940 and 2025 was 30 August 2005, with winds reaching 44.8 km/h.
What is the warmest month in Cullman?
The warmest month in Cullman is July (26.1 °C on average); the coldest is January (5.3 °C).
How much does it rain in Cullman?
Cullman receives on average 1,250 mm of precipitation per year, spread over about 124 rainy days.
Is it sunny in Cullman?
Cullman 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 Cullman?
The heaviest 24-hour snowfall measured in Cullman between 1940 and 2025 was 13 March 1993, with 20.4 cm.
Are there tropical nights in Cullman?
Yes: Cullman has on average 85 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Cullman?
In Cullman, between 1940 and 2025, the highest apparent temperature reached 43.9 °C on 15 July 1980, and the lowest was -31.8 °C on 21 January 1985.
Compare Cullman with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Cullman