May Weather in Westby, United States

Last updated: June 24, 2025

In May, the average temperature in Westby, United States hovers around 15°C (59°F). Visitors can expect a range from a chilly -1°C (31°F) to a warm 34°C (93°F). With an average humidity of 75%, the air feels quite moist. Be prepared for 139 mm (5.5 in) of precipitation over 15 days, making it essential to pack an umbrella along with your summer gear!

May Temperature in Westby

In May in Westby, the average temperature is 15°C (59°F), with maximums reaching up to 34°C (93°F) and minimums dropping as low as -1°C (31°F). This suggests that travelers should be prepared for a wide range of weather conditions during their visit.

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

The chart illustrates May temperature patterns in Westby, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Westby, May typically has an average temperature of 15°C (59°F), with highs reaching up to 34°C (93°F) and lows dropping to around -1°C (31°F).

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

May Precipitation in Westby

In Westby in May, the precipitation amount is 139 mm (5.5 in), occurring over 15 days.

May Precipitation Trends in Westby

The chart displays monthly precipitation patterns in Westby, 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 Westby, May typically receives around 139 mm (5.5 inches) of precipitation spread over approximately 15 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 Westby

In Westby in May, humidity is 75%. With an average temperature of 15°C (59°F), this humidity feels like a warm blanket enveloping you, making it feel more oppressive than refreshing, which can be a challenge for travelers seeking comfort while exploring the area.

May Average Humidity in Westby

This chart illustrates the average monthly humidity levels in Westby, 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 Westby is approximately 75%, 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 Westby

In Westby in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Westby.

Maximum UV Index Levels in Westby for May

The chart shows the monthly maximum UV Index (UVI) for Westby 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 Westby typically reaches 9, which falls under the very high exposure category.

Data source: Westby 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 Westby Compares to Other Months

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

This table compares monthly weather conditions in Westby, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (20°F)	38 mm (1.5 inches)	84%	low
February Weather	-6°C (21°F)	54 mm (2.1 inches)	85%	moderate
March Weather	2°C (35°F)	60 mm (2.3 inches)	84%	moderate
April Weather	7°C (45°F)	92 mm (3.6 inches)	83%	very high
May Weather	15°C (59°F)	139 mm (5.5 inches)	75%	very high
June Weather	21°C (70°F)	124 mm (4.9 inches)	79%	very high
July Weather	23°C (74°F)	112 mm (4.4 inches)	75%	very high
August Weather	21°C (70°F)	112 mm (4.4 inches)	69%	very high
September Weather	18°C (64°F)	111 mm (4.4 inches)	74%	very high
October Weather	10°C (50°F)	119 mm (4.7 inches)	79%	moderate
November Weather	1°C (35°F)	53 mm (2.1 inches)	88%	moderate
December Weather	-3°C (27°F)	44 mm (1.7 inches)	82%	low