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May Weather in Helena Valley West Central, United States

Last updated: June 24, 2025

In May, the average temperature in Helena Valley West Central, United States hovers around 10°C (51°F), with a range that can dip to a brisk -5°C (23°F) or soar to a warm 28°C (83°F). Expect 64 mm (2.5 in) of precipitation spread over 13 days, and take note of the average humidity level, which sits at a comfortable 76%.

May Temperature in Helena Valley West Central

In May in Helena Valley West Central, the average temperature is 10°C (51°F). The maximum can reach 28°C (83°F), while the minimum can drop as low as -5°C (23°F). Be sure to pack layers to accommodate the wide temperature range while exploring the area!

May Weather in Helena Valley West Central: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Helena Valley West Central, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Helena Valley West Central, May typically has an average temperature of 10°C (51°F), with highs reaching up to 28°C (83°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec211831385060696757413224
Data source: Temperature data for Helena Valley West Central 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 Helena Valley West Central

In Helena Valley West Central in May, the precipitation amount is 64 mm (2.5 in) spread over 13 days.

May Precipitation Trends in Helena Valley West Central

The chart displays monthly precipitation patterns in Helena Valley West Central, 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 Helena Valley West Central, May typically receives around 64 mm (2.5 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec194430596478172337352930
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Helena Valley West Central

In Helena Valley West Central in May, humidity is 76%. With an average temperature of 10°C (51°F), this humidity feels like a damp chill that can make outdoor excursions feel much colder, requiring extra layers for comfort as you explore the area.

May Average Humidity in Helena Valley West Central

This chart illustrates the average monthly humidity levels in Helena Valley West Central, 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 Helena Valley West Central is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%88%83%78%76%78%77%71%68%72%84%91%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Helena Valley West Central

In Helena Valley West Central 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 Helena Valley West Central.

Maximum UV Index Levels in Helena Valley West Central for May

The chart shows the monthly maximum UV Index (UVI) for Helena Valley West Central 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 Helena Valley West Central typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34689101098532
Data source: Helena Valley West Central 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 Helena Valley West Central Compares to Other Months

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

This table compares monthly weather conditions in Helena Valley West Central, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (22°F)19 mm (0.7 inches)87%moderate
February Weather-8°C (18°F)44 mm (1.7 inches)88%moderate
March Weather-1°C (31°F)30 mm (1.2 inches)83%high
April Weather4°C (39°F)59 mm (2.3 inches)78%very high
May Weather10°C (51°F)64 mm (2.5 inches)76%very high
June Weather16°C (60°F)78 mm (3.1 inches)78%very high
July Weather21°C (69°F)17 mm (0.7 inches)77%very high
August Weather20°C (67°F)23 mm (0.9 inches)71%very high
September Weather14°C (57°F)37 mm (1.5 inches)68%very high
October Weather5°C (41°F)35 mm (1.4 inches)72%moderate
November Weather0°C (32°F)29 mm (1.1 inches)84%moderate
December Weather-4°C (25°F)30 mm (1.2 inches)90%low

Compare Helena Valley West Central's Climate with Cities Worldwide