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May Weather in Sterling, United States

Last updated: June 24, 2025

In Sterling, United States, the average temperature in May hovers around 14°C (58°F). However, be prepared for a wide range of temperatures, with minimums plunging to -2°C (29°F) and maximums soaring up to 35°C (96°F). The region experiences an average precipitation of 105 mm (4.1 in) spread over 11 days, coupled with a high humidity level of 80%, creating a unique and vibrant climate.

May Temperature in Sterling

In May in Sterling, the average temperature is 14°C (58°F). Maximums can reach 35°C (96°F) and minimums can be as low as -2°C (29°F). This diverse range means travelers should be prepared for both warm days and cool 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 14°C (58°F), with highs reaching up to 35°C (96°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec232433445768737063513730
Data source: Temperature data for Sterling generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Sterling

In Sterling in May, the precipitation amount is 105 mm (4.1 in) over the course of 11 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 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec50505383105908596781185758
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Sterling

In Sterling in May humidity is 80%. With an average temperature of 14°C (58°F), this humidity feels like a warm blanket wrapping around you, making outdoor activities sweltering and uncomfortable for travel.

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 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%85%86%80%80%80%81%80%84%90%86%
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 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 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 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458910997532
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.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (23°F)50 mm (2.0 inches)88%low
February Weather-5°C (24°F)50 mm (2.0 inches)87%moderate
March Weather1°C (34°F)53 mm (2.1 inches)85%moderate
April Weather7°C (45°F)83 mm (3.3 inches)86%very high
May Weather14°C (58°F)105 mm (4.1 inches)80%very high
June Weather20°C (68°F)90 mm (3.6 inches)80%very high
July Weather23°C (74°F)85 mm (3.4 inches)80%very high
August Weather21°C (71°F)96 mm (3.8 inches)80%very high
September Weather17°C (63°F)78 mm (3.1 inches)80%high
October Weather11°C (52°F)118 mm (4.7 inches)84%moderate
November Weather3°C (37°F)57 mm (2.2 inches)89%moderate
December Weather-1°C (30°F)58 mm (2.3 inches)86%low

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