Cullman (AL) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Cullman.
Climate overview of Cullman
The climate in Cullman, Alabama, United States of America, is marked by large temperature swings across the seasons, ranging from 32°C (90°F) in August to 10°C (50°F) in January.
With around 1509 mm (59 in) of annual rain/snowfall, Cullman has a notably wet climate. However, this rain/snowfall is not evenly distributed — the city has very warm summers and cold winters. The wettest month is December.
Cullman Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Cullman - and find the best time to visit.
Monthly Temperature in Cullman
In Cullman, temperatures differ significantly between summer and winter months. Average daytime temperatures reach a very warm 32°C (90°F) in August. In January, the coolest month of the year, temperatures drop to a chilly 10°C (50°F).
At night, temperatures range from around 20°C (68°F) in August to -2°C (28°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Cullman
Cullman experiences significant rain/snowfall throughout the year, averaging 1509 mm (59 in) of precipitation annually. Cullman experiences moderate seasonal variation in rainfall, with monthly averages ranging from 172 mm (6.8 in) in December, the wettest month, and 88 mm (3.5 in) in June, the driest month. For more details, please visit our Cullman Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Humidity in Cullman by Month
The relative humidity is high throughout the year in Cullman.
The city experiences its highest humidity in July, reaching 73%. In April, the humidity drops to its lowest level at 63%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Cullman
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: April, May, September and October
- Warmest weather: June, July and August
- Seasonal pattern: Very warm summers and cold winters
- Coldest conditions: January, with freezing nights around -2°C (28°F).
Frequently asked questions about the climate in Cullman
What is the best time to visit Cullman?
April, May, September and October typically offer the most optimal weather in Cullman. In contrast, January, February and December tend to have less optimal conditions. Cullman has very warm summers and cold winters.
What temperatures can I expect in Cullman?
Daytime highs range from 10°C (50°F) in January to 32°C (90°F) in August. Nighttime lows range from -2°C (28°F) to 20°C (68°F). Temperatures vary considerably through the year.
How much rain does Cullman get?
Annual rainfall is around 1509 mm (59 in). December is the wettest month with 172 mm (6.8 in), while June is the driest with 88 mm (3.5 in).
Cullman 3-Day Forecast
Cullman (AL) 3-Day Forecast
Cullman on the map
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