May Weather in Alliance, United States

Last updated: June 24, 2025

In May, the average temperature in Alliance, United States hovers around 13°C (55°F). However, temperatures can range dramatically, with a minimum of -5°C (23°F) and a maximum soaring to 33°C (91°F). Expect about 123 mm (4.8 in) of precipitation spread over 14 days, making the average humidity a comfortable 74%.

May Temperature in Alliance

In May in Alliance, the average temperature is 13°C (55°F), with maximums reaching up to 33°C (91°F) and minimums dropping as low as -5°C (23°F). Travelers should be prepared for a wide range of temperatures during this time.

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

The chart illustrates May temperature patterns in Alliance, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alliance, May typically has an average temperature of 13°C (55°F), with highs reaching up to 33°C (91°F) and lows dropping to around -5°C (23°F).

Data source: Temperature data for Alliance generated using information from the Copernicus Climate Change Service.

May Precipitation in Alliance

In Alliance in May, the precipitation amount is 123 mm (4.8 in) over a span of 14 days.

May Precipitation Trends in Alliance

The chart displays monthly precipitation patterns in Alliance, 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 Alliance, May typically receives around 123 mm (4.8 inches) of precipitation spread over approximately 14 days.

Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

May Humidity in Alliance

In Alliance in May, humidity is 74%. With an average temperature of 13°C (55°F), this humidity feels like a damp blanket wrapping around you, making outdoor activities somewhat uncomfortable and demanding frequent breaks in shaded areas.

May Average Humidity in Alliance

This chart illustrates the average monthly humidity levels in Alliance, 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 Alliance is approximately 74%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Alliance

In Alliance 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 Alliance.

Maximum UV Index Levels in Alliance for May

The chart shows the monthly maximum UV Index (UVI) for Alliance 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 Alliance typically reaches 10, which falls under the very high exposure category.

Data source: Alliance 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 Alliance Compares to Other Months

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

This table compares monthly weather conditions in Alliance, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (29°F)	11 mm (0.5 inches)	72%	moderate
February Weather	-3°C (27°F)	22 mm (0.9 inches)	76%	moderate
March Weather	4°C (39°F)	61 mm (2.4 inches)	61%	high
April Weather	7°C (46°F)	52 mm (2.1 inches)	60%	very high
May Weather	13°C (55°F)	123 mm (4.8 inches)	74%	very high
June Weather	21°C (70°F)	41 mm (1.6 inches)	82%	extreme
July Weather	24°C (76°F)	42 mm (1.6 inches)	82%	extreme
August Weather	22°C (72°F)	44 mm (1.7 inches)	84%	very high
September Weather	18°C (65°F)	29 mm (1.2 inches)	75%	very high
October Weather	8°C (47°F)	44 mm (1.7 inches)	73%	high
November Weather	4°C (40°F)	22 mm (0.9 inches)	74%	moderate
December Weather	0°C (32°F)	18 mm (0.7 inches)	77%	moderate