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May Weather in Harriman, United States

Last updated: June 24, 2025

In Harriman, United States, the average temperature in May hovers around 20°C (69°F), with a minimum drop to 1°C (35°F) and a maximum rise to 32°C (91°F). During this month, expect 118 mm (4.6 in) of precipitation spread over 12 days, contributing to a rather high average humidity of 85%.

May Temperature in Harriman

In May in Harriman, the average temperature is 20°C (69°F), with maximums reaching 32°C (91°F) and minimums dropping as low as 1°C (35°F). This diverse weather makes it important for travelers to pack for both warm and cool conditions.

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 20°C (69°F), with highs reaching up to 32°C (91°F) and lows dropping to around 1°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec404652596974787673634845
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 precipitation amount is 118 mm (4.6 in) spread over 12 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 118 mm (4.6 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec981781541421181141221329512078137
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 85%. With an average temperature of 20°C (69°F), this humidity feels like a warm, sticky embrace that can make even short walks feel tiring, creating a heavy atmosphere that may deter longer excursions but offers an opportunity to explore shaded areas and savor refreshing drinks.

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 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%86%82%85%85%83%76%76%80%88%88%
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 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, 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 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36810111111109753
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 Weather5°C (41°F)98 mm (3.9 inches)86%moderate
February Weather8°C (46°F)178 mm (7.0 inches)86%high
March Weather11°C (52°F)154 mm (6.1 inches)86%very high
April Weather15°C (59°F)142 mm (5.6 inches)82%very high
May Weather20°C (69°F)118 mm (4.6 inches)85%extreme
June Weather24°C (75°F)114 mm (4.5 inches)85%extreme
July Weather26°C (78°F)122 mm (4.8 inches)83%extreme
August Weather25°C (77°F)132 mm (5.2 inches)76%very high
September Weather23°C (73°F)95 mm (3.7 inches)76%very high
October Weather17°C (63°F)120 mm (4.7 inches)80%high
November Weather9°C (49°F)78 mm (3.1 inches)88%moderate
December Weather7°C (45°F)137 mm (5.4 inches)88%moderate

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