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May Weather in Harriman, United States

Last updated: June 24, 2025

In May, the average temperature in Harriman, United States is 15°C (60°F), with a minimum of 0°C (32°F) and a maximum reaching 33°C (91°F). Expect 127 mm (5.0 in) of precipitation spread over 13 days, contributing to an average humidity level of 69%. Plan accordingly for a mix of pleasant days and occasional rainfall!

May Temperature in Harriman

In May in Harriman, the average temperature is 15°C (60°F). Maximums can reach 33°C (91°F), and minimums can be as low as 0°C (32°F). Be prepared for a wide range of temperatures, making it advisable to pack layers for your trip.

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

The chart illustrates May temperature patterns in Harriman, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Harriman, May typically has an average temperature of 15°C (60°F), with highs reaching up to 33°C (91°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec313439506069757367574335
Data source: Temperature data for Harriman 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 Harriman

In Harriman in May, the total precipitation amount is 127 mm (5.0 in) spread over 13 days.

May Precipitation Trends in Harriman

The chart displays monthly precipitation patterns in Harriman, 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 Harriman, May typically receives around 127 mm (5.0 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec7097911151279914412711914489104
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Harriman

In Harriman in May, humidity is 69%. With an average temperature of 15°C (60°F), this humidity feels like a cool, damp embrace that can make outdoor activities feel slightly heavier and more exhausting, but still inviting for exploring the charming sights and sounds of the area.

May Average Humidity in Harriman

This chart illustrates the average monthly humidity levels in Harriman, 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 Harriman is approximately 69%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%81%78%70%69%62%65%68%74%82%80%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Harriman

In Harriman 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 Harriman.

Maximum UV Index Levels in Harriman for May

The chart shows the monthly maximum UV Index (UVI) for Harriman 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 Harriman typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356810101098642
Data source: Harriman 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 Harriman Compares to Other Months

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

This table compares monthly weather conditions in Harriman, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)70 mm (2.8 inches)84%moderate
February Weather1°C (34°F)97 mm (3.8 inches)82%moderate
March Weather4°C (39°F)91 mm (3.6 inches)81%high
April Weather10°C (50°F)115 mm (4.5 inches)78%very high
May Weather15°C (60°F)127 mm (5.0 inches)69%very high
June Weather21°C (69°F)99 mm (3.9 inches)69%very high
July Weather24°C (75°F)144 mm (5.7 inches)62%very high
August Weather23°C (73°F)127 mm (5.0 inches)65%very high
September Weather19°C (67°F)119 mm (4.7 inches)68%very high
October Weather14°C (57°F)144 mm (5.7 inches)74%high
November Weather6°C (43°F)89 mm (3.5 inches)82%moderate
December Weather2°C (35°F)104 mm (4.1 inches)80%low

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