May Weather in Sterling, United States

Last updated: June 24, 2025

In May, the average temperature in Sterling, United States hovers around 15°C (59°F). Expect a wide range, with minimums dipping to -1°C (30°F) and maximums soaring up to 35°C (96°F). Prepare for some wet days, as 105 mm (4.1 in) of precipitation typically falls over 12 days, and the air carries an average humidity of 74%.

May Temperature in Sterling

In May in Sterling, the average temperature is 15°C (59°F), with maximums reaching 35°C (96°F) and minimums dropping as low as -1°C (30°F). This wide range makes Sterling a destination where you should be prepared for both warm and cold weather.

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 15°C (59°F), with highs reaching up to 35°C (96°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 105 mm (4.1 in) over the course of 12 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 105 mm (4.1 inches) of precipitation spread over approximately 12 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 74%. With an average temperature of 15°C (59°F), this humidity feels like traveling through a warm, sticky blanket that clings to your skin, making outdoor activities a bit uncomfortable and prompting you to seek out shaded areas or cool breezes.

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 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 Sterling

In Sterling 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 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 10, which falls under the very 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	0°C (33°F)	10 mm (0.4 inches)	72%	moderate
February Weather	-1°C (31°F)	16 mm (0.6 inches)	76%	moderate
March Weather	6°C (43°F)	56 mm (2.2 inches)	61%	high
April Weather	10°C (50°F)	52 mm (2.1 inches)	60%	very high
May Weather	15°C (59°F)	105 mm (4.1 inches)	74%	very high
June Weather	22°C (72°F)	42 mm (1.7 inches)	82%	extreme
July Weather	25°C (77°F)	41 mm (1.6 inches)	82%	extreme
August Weather	23°C (74°F)	28 mm (1.1 inches)	84%	very high
September Weather	20°C (68°F)	25 mm (1.0 inches)	75%	very high
October Weather	10°C (50°F)	25 mm (1.0 inches)	73%	high
November Weather	6°C (43°F)	15 mm (0.6 inches)	74%	moderate
December Weather	2°C (35°F)	10 mm (0.4 inches)	77%	moderate