Cullman, United States experiences average highs of 22°C (72°F) and lows of 13°C (55°F) throughout the year. Rainfall is moderate, averaging about 11 rainy days per month. Sunshine is abundant, averaging about 9 hours per day. Average highs have cooled by 1.0°C (1.8°F) across the available records.
Cullman, United States Weather & Climate 2026
Monthly climate averages for Cullman, United States. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: Feb–Aug At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
6.4/10
Best: April, May, October
UV Index
6
High
Temperature 22°C / 13°C
Feels Like 23°C / 12°C
Rainy Days 11
Rainfall 113 mm
Sunshine 9 h
Humidity 71%
Wind Speed 14 km/h
Dew Point 12°C
Snow Days 1 days
Frost Days 6 days
Hottest Month
32°C
July
Avg Low23°C
Rain15days
Coldest Month
2°C
January
Avg High11°C
Rain10days
Driest Month
6days
October
Avg High24°C
Avg Low14°C
Windiest Month
17 km/h
March (Gusts 43)
Worst Time to Visit
Consider avoiding January, February, July, December due to frequent rain.
Sun Position
Sunrise 05:37
Daylight 14.4h
Sunset 20:02
Live conditions—
Cullman on the map · live conditions
Cullman, United States
- Continent
- Americas
- Country
- United States
- City
- Cullman
- Population
- 15.4K
- Elevation
- 242 m
- Coordinates
- 34.17°, -86.84°
Seasonal Breakdown
Spring
Mar–May
Avg High 22°C
Avg Low 12°C
Rain 11 days/mo
2/3 best months
Summer
Jun–Aug
Avg High 31°C
Avg Low 22°C
Rain 14 days/mo
Autumn
Sep–Nov
Avg High 24°C
Avg Low 14°C
Rain 7 days/mo
1/3 best months
Winter
Dec–Feb
Avg High 13°C
Avg Low 4°C
Rain 11 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 11°C / 2°C . Feb: 15°C / 6°C . Mar: 19°C / 9°C . Apr: 22°C / 12°C . May: 26°C / 17°C . Jun: 30°C / 21°C . Jul: 32°C / 23°C . Aug: 31°C / 22°C . Sep: 29°C / 20°C . Oct: 24°C / 14°C . Nov: 17°C / 8°C . Dec: 13°C / 5°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 126 mm. Feb: 164 mm. Mar: 168 mm. Apr: 130 mm. May: 107 mm. Jun: 107 mm. Jul: 95 mm. Aug: 97 mm. Sep: 72 mm. Oct: 86 mm. Nov: 77 mm. Dec: 129 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 71%. Feb: 73%. Mar: 68%. Apr: 69%. May: 72%. Jun: 73%. Jul: 75%. Aug: 73%. Sep: 68%. Oct: 66%. Nov: 70%. Dec: 75%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 16 km/h . Feb: 17 km/h . Mar: 17 km/h . Apr: 17 km/h . May: 14 km/h . Jun: 12 km/h . Jul: 11 km/h . Aug: 11 km/h . Sep: 12 km/h . Oct: 14 km/h . Nov: 14 km/h . Dec: 16 km/h .
Sunshine
Sunshine
Sunshine: Jan: 6h. Feb: 6h. Mar: 8h. Apr: 10h. May: 11h. Jun: 11h. Jul: 12h. Aug: 11h. Sep: 10h. Oct: 9h. Nov: 7h. Dec: 6h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 3. Feb: UV 4. Mar: UV 6. Apr: UV 7. May: UV 8. Jun: UV 8. Jul: UV 8. Aug: UV 8. Sep: UV 7. Oct: UV 5. Nov: UV 4. Dec: UV 3.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow DaysSnowfall
Snow Days: Jan: 1 days. Feb: 1 days. Mar: 0 days. Apr: 0 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 0 days. Nov: 0 days. Dec: 1 days.
Climate Trends
Average highs have cooled by 1.0°C (1.8°F) across the available records. Average rainfall is trending wetter by about 29 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 32°C | Jul · 32°C |
| Coldest month | Jan 2025 · -1°C | Jan · 2°C |
| Wettest month | May 2025 · 208 mm | Mar · 168 mm |
| Windiest month | Mar 2025 · 20 km/h | Mar · 17 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Good April best
Excellent May best
Excellent June
Fair July
Fair August
Fair September
Good October best
Excellent November
Good December
Fair | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 11°C / 2°C | 8°C / -1°C | 10days (126 mm) Wet | 6.3h Fair | 71% Muggy | 3.2 Moderate | Poor | View Details |
| February | 15°C / 6°C | 13°C / 2°C | 12days (164 mm) Wet | 6.3h Fair | 73% Muggy | 4.1 Moderate | Poor | View Details |
| March | 19°C / 9°C | 17°C / 6°C | 12days (168 mm) Wet | 8h Good | 68% Muggy | 5.6 High | Good | View Details |
| April best | 22°C / 12°C | 22°C / 10°C | 10days (130 mm) Wet | 9.8h Good | 69% Muggy | 6.9 High | Excellent | View Details |
| May best | 26°C / 17°C | 28°C / 17°C | 11days (107 mm) Wet | 10.5h Excellent | 72% Muggy | 7.5 Very High | Excellent | View Details |
| June | 30°C / 21°C | 33°C / 23°C | 14days (107 mm) Wet | 11.4h Excellent | 73% Muggy | 8.1 Very High | Fair | View Details |
| July | 32°C / 23°C | 36°C / 26°C | 15days (95 mm) Wet | 11.7h Excellent | 75% Muggy | 8 Very High | Fair | View Details |
| August | 31°C / 22°C | 35°C / 25°C | 13days (97 mm) Wet | 10.8h Excellent | 73% Muggy | 7.6 Very High | Fair | View Details |
| September | 29°C / 20°C | 31°C / 21°C | 8days (72 mm) Wet | 9.9h Good | 68% Muggy | 6.5 High | Good | View Details |
| October best | 24°C / 14°C | 24°C / 13°C | 6days (86 mm) Good | 8.8h Good | 66% Muggy | 5.3 High | Excellent | View Details |
| November | 17°C / 8°C | 16°C / 5°C | 8days (77 mm) Wet | 7.3h Good | 70% Muggy | 3.8 Moderate | Good | View Details |
| December | 13°C / 5°C | 11°C / 2°C | 10days (129 mm) Wet | 5.7h Fair | 75% Muggy | 3.1 Moderate | Fair | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Cullman are April, May, October, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Cullman, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Cullman is July, with average daytime highs of 32°C (89°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Cullman is January, with average overnight lows of 2°C (36°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Cullman is March, averaging 168mm of precipitation across 12 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Cullman runs through July, June, August, February, with the heaviest rainfall in July. Based on 10-year averages for Cullman.
Cullman receives approximately 107 sunshine hours per year. The sunniest month is July with around 12 hours. Based on climate data for Cullman.
The least favorable months to visit Cullman are January, February, July, December, primarily due to frequent rain. For the best conditions, consider April, May, October instead.
The annual average UV index in Cullman is 6, classified as high. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Cullman is 71%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes, Cullman receives snow. Months with snowfall average 1 snow days and 1 cm (0 in) of accumulation, with about 6 frost days during winter.
Average wind speeds in Cullman are 14 km/h (9 mph). The windiest month is March with peak winds reaching 17 km/h (11 mph) (gusts up to 43 km/h / 26 mph).
Cullman averages 6 clear-sky days per month with overall cloud cover around 55%. The clearest skies occur in October.
The annual average dew point in Cullman is 12°C (54°F), which feels pleasant with low humidity. Outdoor activities are comfortable year-round from a humidity standpoint.
Cullman has a Humid Subtropical climate, classified as Cfa under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Cullman ranges from 12°C (54°F) to 23°C (73°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
June is not the best time to visit Cullman, with a climate score of 6.1/10. Consider visiting during April, May, October instead for better conditions.
For June in Cullman, pack Umbrella, Waterproof jacket, Waterproof shoes, Breathable clothing, Sunscreen (SPF 30+). With average highs of 30°C (86°F) and 14 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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