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May Weather in Mullan, United States

Last updated: June 24, 2025

In May, the average temperature in Mullan, United States hovers around 10°C (51°F), with the potential to dip as low as -4°C (25°F) and peak at a warm 29°C (85°F). Expect 90 mm (3.5 in) of precipitation spread over about 15 days, coupled with an average humidity of 77%.

May Temperature in Mullan

In May in Mullan, the average temperature is 10°C (51°F). The maximum can reach 29°C (85°F), and the minimum can be as low as -4°C (25°F). Be prepared for a wide range of temperatures during your travels, so pack layers to stay comfortable.

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

The chart illustrates May temperature patterns in Mullan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mullan, May typically has an average temperature of 10°C (51°F), with highs reaching up to 29°C (85°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec262333405158686756423427
Data source: Temperature data for Mullan 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 Mullan

In Mullan in May, the total precipitation amount is 90 mm (3.5 in), which occurs over a span of 15 days.

May Precipitation Trends in Mullan

The chart displays monthly precipitation patterns in Mullan, 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 Mullan, May typically receives around 90 mm (3.5 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec112151991029054122648108138136
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Mullan

In Mullan in May humidity is 77%. With an average temperature of 10°C (51°F), this humidity feels like a damp chill that can make outdoor activities somewhat uncomfortable, causing clothes to cling to your skin and breathing to feel heavier, which may deter longer sightseeing adventures.

May Average Humidity in Mullan

This chart illustrates the average monthly humidity levels in Mullan, 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 Mullan is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%89%87%84%78%78%77%64%62%79%87%90%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Mullan

In Mullan 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 Mullan.

Maximum UV Index Levels in Mullan for May

The chart shows the monthly maximum UV Index (UVI) for Mullan 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 Mullan typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2467991097532
Data source: Mullan 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 Mullan Compares to Other Months

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

This table compares monthly weather conditions in Mullan, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (26°F)112 mm (4.4 inches)89%low
February Weather-5°C (24°F)151 mm (5.9 inches)89%moderate
March Weather0°C (33°F)99 mm (3.9 inches)87%high
April Weather4°C (40°F)102 mm (4.0 inches)84%high
May Weather10°C (51°F)90 mm (3.5 inches)77%very high
June Weather15°C (59°F)54 mm (2.1 inches)78%very high
July Weather20°C (68°F)12 mm (0.5 inches)77%very high
August Weather19°C (67°F)26 mm (1.0 inches)64%very high
September Weather13°C (56°F)48 mm (1.9 inches)62%high
October Weather5°C (42°F)108 mm (4.3 inches)79%moderate
November Weather1°C (34°F)138 mm (5.4 inches)87%moderate
December Weather-3°C (28°F)136 mm (5.4 inches)90%low

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