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May Weather in Cullman, United States

Last updated: June 24, 2025

In May, the average temperature in Cullman, United States hovers around 22°C (72°F). Expect a minimum of 4°C (40°F) and a maximum that can reach up to 34°C (94°F). During this month, anticipate about 100 mm (4.0 in) of precipitation spread across approximately 11 days, and experience an average humidity level of 83%. Stay prepared for both warm days and the occasional shower!

May Temperature in Cullman

In May in Cullman, the average temperature is 22°C (72°F), with maximums reaching up to 34°C (94°F) and minimums dropping as low as 4°C (40°F). This varied climate makes Cullman an ideal destination for travelers seeking both warmth and cooler respite.

May Weather in Cullman: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Cullman, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cullman, May typically has an average temperature of 22°C (72°F), with highs reaching up to 34°C (94°F) and lows dropping to around 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec445056627177807975665148
Data source: Temperature data for Cullman generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Cullman

In Cullman in May, the total precipitation amounts to 100 mm (4.0 in) over the course of 11 days.

May Precipitation Trends in Cullman

The chart displays monthly precipitation patterns in Cullman, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Cullman, May typically receives around 100 mm (4.0 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec11718618414710012710610710513476157
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Cullman

In Cullman in May humidity is 83%. With average temperature 22°C (72°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities challenging and prompting travelers to seek shade or frequent stops for hydration.

May Average Humidity in Cullman

This chart illustrates the average monthly humidity levels in Cullman, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Cullman is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%85%82%83%82%78%67%64%75%87%89%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Cullman

In Cullman in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Cullman.

Maximum UV Index Levels in Cullman for May

The chart shows the monthly maximum UV Index (UVI) for Cullman in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In May, the maximum UV index in Cullman typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810101111109764
Data source: Cullman May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How May Weather in Cullman Compares to Other Months

Weather in Cullman varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Cullman, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Cullman, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)117 mm (4.6 inches)87%moderate
February Weather10°C (50°F)186 mm (7.3 inches)87%high
March Weather13°C (56°F)184 mm (7.3 inches)85%very high
April Weather16°C (62°F)147 mm (5.8 inches)82%very high
May Weather22°C (72°F)100 mm (4.0 inches)83%very high
June Weather25°C (77°F)127 mm (5.0 inches)82%extreme
July Weather27°C (80°F)106 mm (4.2 inches)78%extreme
August Weather26°C (80°F)107 mm (4.2 inches)67%very high
September Weather24°C (76°F)104 mm (4.1 inches)64%very high
October Weather19°C (66°F)134 mm (5.3 inches)74%high
November Weather11°C (51°F)76 mm (3.0 inches)87%high
December Weather9°C (48°F)157 mm (6.2 inches)88%moderate

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