May Weather in Sterling, United States

Last updated: June 24, 2025

In Sterling, United States, the average temperature in May sits at a brisk 10°C (49°F). Expect a range where temperatures can dip as low as -1°C (30°F) and reach up to 23°C (74°F). The month brings about 67 mm (2.6 in) of precipitation over approximately 16 days, with high average humidity hovering around 85%. Be prepared for a chilly and damp experience!

May Temperature in Sterling

In May in Sterling, the average temperature is 10°C (49°F). The maximum can reach 23°C (74°F), while the minimum can dip as low as -1°C (30°F). This range makes it a great time for travelers to enjoy a mix of pleasant days and chilly nights.

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

The chart illustrates May temperature patterns in Sterling, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sterling, May typically has an average temperature of 10°C (49°F), with highs reaching up to 23°C (74°F) and lows dropping to around -1°C (30°F).

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

May Precipitation in Sterling

In Sterling in May, the precipitation amount is 67 mm (2.6 in), spread over a duration of 16 days.

May Precipitation Trends in Sterling

The chart displays monthly precipitation patterns in Sterling, 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 Sterling, May typically receives around 67 mm (2.6 inches) of precipitation spread over approximately 16 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 Sterling

In Sterling in May humidity is 85%. With an average temperature of 10°C (49°F), this humidity feels like an unrelenting blanket, making outdoor activities less enjoyable and forcing travelers to seek shelter more often.

May Average Humidity in Sterling

This chart illustrates the average monthly humidity levels in Sterling, 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 Sterling 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 Sterling

In Sterling in May, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Sterling, you can refer to this Hourly UV Index in Sterling.

Maximum UV Index Levels in Sterling for May

The chart shows the monthly maximum UV Index (UVI) for Sterling 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 Sterling typically reaches 6, which falls under the high exposure category.

Data source: Sterling 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 Sterling Compares to Other Months

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

This table compares monthly weather conditions in Sterling, 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 (19°F)	53 mm (2.1 inches)	95%	low
February Weather	-5°C (23°F)	50 mm (1.9 inches)	95%	low
March Weather	-3°C (27°F)	39 mm (1.5 inches)	90%	moderate
April Weather	4°C (39°F)	36 mm (1.4 inches)	82%	moderate
May Weather	10°C (49°F)	67 mm (2.6 inches)	85%	high
June Weather	13°C (56°F)	66 mm (2.6 inches)	95%	high
July Weather	16°C (61°F)	75 mm (2.9 inches)	100%	high
August Weather	15°C (59°F)	98 mm (3.9 inches)	99%	high
September Weather	11°C (51°F)	113 mm (4.4 inches)	97%	moderate
October Weather	5°C (42°F)	127 mm (5.0 inches)	93%	low
November Weather	-2°C (28°F)	91 mm (3.6 inches)	97%	low
December Weather	-3°C (26°F)	110 mm (4.3 inches)	98%	low