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May Weather in Hayfork, United States

Last updated: June 24, 2025

In Hayfork, United States, the average temperature in May is a mild 13°C (56°F). However, be prepared for some temperature swings, with minimums plunging to -3°C (27°F) and maximums soaring to 31°C (88°F). Rainfall is moderate, with 53 mm (2.1 in) expected over about 6 days, and the air tends to be quite humid, boasting an average humidity of 81%.

May Temperature in Hayfork

In May in Hayfork, the average temperature is 13°C (56°F), with maximums reaching 31°C (88°F) and minimums dropping as low as -3°C (27°F). This range makes it essential for travelers to pack accordingly for both warm and cool conditions.

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

The chart illustrates May temperature patterns in Hayfork, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hayfork, May typically has an average temperature of 13°C (56°F), with highs reaching up to 31°C (88°F) and lows dropping to around -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec394043495564737264544538
Data source: Temperature data for Hayfork 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 Hayfork

In Hayfork in May, the precipitation amount is 53 mm (2.1 in) over a span of 6 days.

May Precipitation Trends in Hayfork

The chart displays monthly precipitation patterns in Hayfork, 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 Hayfork, May typically receives around 53 mm (2.1 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec171165133775312231349101125
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Hayfork

In Hayfork in May, humidity is 81%. With an average temperature of 13°C (56°F), this humidity feels like a blanket of damp air that clings to your skin, making it essential to pack breathable clothing and stay hydrated while exploring.

May Average Humidity in Hayfork

This chart illustrates the average monthly humidity levels in Hayfork, 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 Hayfork is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%85%82%81%79%70%60%62%72%87%86%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Hayfork

In Hayfork 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 Hayfork.

Maximum UV Index Levels in Hayfork for May

The chart shows the monthly maximum UV Index (UVI) for Hayfork 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 Hayfork typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579111111109743
Data source: Hayfork 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 Hayfork Compares to Other Months

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

This table compares monthly weather conditions in Hayfork, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)171 mm (6.7 inches)86%moderate
February Weather4°C (40°F)165 mm (6.5 inches)85%moderate
March Weather6°C (43°F)133 mm (5.2 inches)85%high
April Weather9°C (49°F)77 mm (3.0 inches)82%very high
May Weather13°C (56°F)53 mm (2.1 inches)81%extreme
June Weather18°C (65°F)12 mm (0.5 inches)79%extreme
July Weather23°C (73°F)2 mm (0.1 inches)70%extreme
August Weather22°C (72°F)3 mm (0.1 inches)60%very high
September Weather18°C (65°F)13 mm (0.5 inches)62%very high
October Weather12°C (55°F)49 mm (1.9 inches)72%high
November Weather7°C (46°F)101 mm (4.0 inches)87%moderate
December Weather3°C (38°F)125 mm (4.9 inches)86%moderate

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