May Weather in Willow, United States

Last updated: June 24, 2025

In May, the average temperature in Willow, United States hovers around 9°C (49°F), with minimums dipping to -3°C (28°F) and maximums reaching 23°C (74°F). Expect a fair amount of rainfall, totaling 79 mm (3.1 in) over approximately 20 days of the month. Humidity levels are quite high, averaging around 85%, making it a uniquely brisk and damp time of year.

May Temperature in Willow

In May in Willow, the average temperature is 9°C (49°F). Maximum temperatures can reach 23°C (74°F), while minimums can drop as low as -3°C (28°F). This diverse weather makes Willow an ideal destination for travelers seeking both mild days and crisp nights.

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

The chart illustrates May temperature patterns in Willow, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Willow, May typically has an average temperature of 9°C (49°F), with highs reaching up to 23°C (74°F) and lows dropping to around -3°C (28°F).

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

May Precipitation in Willow

In Willow in May, the precipitation amount is 79 mm (3.1 in) over a span of 20 days.

May Precipitation Trends in Willow

The chart displays monthly precipitation patterns in Willow, 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 Willow, May typically receives around 79 mm (3.1 inches) of precipitation spread over approximately 20 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 Willow

In Willow in May humidity is 85%. With an average temperature of 9°C (49°F), this humidity feels like a damp chill that seeps into your bones, making every step outside a challenge as the moisture in the air weighs heavily and lingers, transforming even simple outings into a quest for comfort.

May Average Humidity in Willow

This chart illustrates the average monthly humidity levels in Willow, 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 Willow is approximately 85%, 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 Willow

In Willow in May, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Willow.

Maximum UV Index Levels in Willow for May

The chart shows the monthly maximum UV Index (UVI) for Willow 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 Willow typically reaches 5, which falls under the moderate exposure category.

Data source: Willow 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 Willow Compares to Other Months

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

This table compares monthly weather conditions in Willow, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-12°C (10°F)	36 mm (1.4 inches)	95%	low
February Weather	-9°C (16°F)	48 mm (1.9 inches)	95%	low
March Weather	-6°C (22°F)	41 mm (1.6 inches)	90%	moderate
April Weather	2°C (36°F)	40 mm (1.6 inches)	82%	moderate
May Weather	9°C (49°F)	79 mm (3.1 inches)	85%	moderate
June Weather	14°C (57°F)	80 mm (3.2 inches)	95%	high
July Weather	16°C (62°F)	86 mm (3.4 inches)	100%	high
August Weather	14°C (58°F)	134 mm (5.3 inches)	99%	moderate
September Weather	9°C (49°F)	107 mm (4.2 inches)	97%	moderate
October Weather	3°C (37°F)	110 mm (4.3 inches)	93%	low
November Weather	-6°C (21°F)	67 mm (2.6 inches)	97%	low
December Weather	-8°C (17°F)	74 mm (2.9 inches)	98%	low