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May Weather in Blackfoot, United States

Last updated: June 24, 2025

In May, the average temperature in Blackfoot, United States hovers around 12°C (55°F). However, be prepared for a temperature range from a chilly -3°C (27°F) to a warm 31°C (89°F). Expect about 55 mm (2.2 in) of precipitation spread over 10 days, with an average humidity of 71%. Embrace the diverse weather as you explore!

May Temperature in Blackfoot

In May in Blackfoot, the average temperature is 12°C (55°F). Maximum temperatures can reach 31°C (89°F), while minimum temperatures can drop as low as -3°C (27°F). This range makes Blackfoot a destination where travelers should prepare for both warm days and chilly nights.

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

The chart illustrates May temperature patterns in Blackfoot, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Blackfoot, May typically has an average temperature of 12°C (55°F), with highs reaching up to 31°C (89°F) and lows dropping to around -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec242737455466757262463626
Data source: Temperature data for Blackfoot 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 Blackfoot

In Blackfoot in May, the precipitation amount is 55 mm (2.2 in) spread over a duration of 10 days.

May Precipitation Trends in Blackfoot

The chart displays monthly precipitation patterns in Blackfoot, 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 Blackfoot, May typically receives around 55 mm (2.2 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec395044525528121625372940
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Blackfoot

In Blackfoot in May, humidity is 71%. With an average temperature of 12°C (55°F), this humidity feels like a damp chill that permeates your clothing, making it essential to wear layers when traveling.

May Average Humidity in Blackfoot

This chart illustrates the average monthly humidity levels in Blackfoot, 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 Blackfoot is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec95%95%90%81%71%64%59%49%52%69%86%91%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Blackfoot

In Blackfoot 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 Blackfoot.

Maximum UV Index Levels in Blackfoot for May

The chart shows the monthly maximum UV Index (UVI) for Blackfoot 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 Blackfoot typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3578101111109643
Data source: Blackfoot 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 Blackfoot Compares to Other Months

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

This table compares monthly weather conditions in Blackfoot, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (24°F)39 mm (1.5 inches)95%moderate
February Weather-3°C (27°F)50 mm (2.0 inches)95%moderate
March Weather3°C (37°F)44 mm (1.7 inches)90%high
April Weather7°C (45°F)51 mm (2.0 inches)81%very high
May Weather12°C (55°F)55 mm (2.2 inches)71%very high
June Weather19°C (66°F)28 mm (1.1 inches)64%extreme
July Weather24°C (75°F)12 mm (0.5 inches)59%extreme
August Weather22°C (72°F)15 mm (0.6 inches)49%very high
September Weather17°C (63°F)25 mm (1.0 inches)52%very high
October Weather8°C (46°F)37 mm (1.4 inches)69%high
November Weather2°C (36°F)29 mm (1.1 inches)86%moderate
December Weather-3°C (26°F)40 mm (1.6 inches)91%moderate

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