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May Weather in Cass Lake, United States

Last updated: June 24, 2025

In Cass Lake, United States, the average temperature in May hovers around 12°C (53°F). While the minimum can dip to a brisk -2°C (28°F), the month can also see a pleasant maximum of 29°C (84°F). Expect around 51 mm (2.0 in) of precipitation spread over 8 days, with an average humidity level of 76%.

May Temperature in Cass Lake

In May in Cass Lake, the average temperature is 12°C (53°F). Maximum temperatures can reach up to 29°C (84°F), while minimums can drop as low as -2°C (28°F). Therefore, it's advisable to pack both warm and cool clothing to accommodate the wide range of temperatures during your travels.

May Weather in Cass Lake: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Cass Lake, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cass Lake, May typically has an average temperature of 12°C (53°F), with highs reaching up to 29°C (84°F) and lows dropping to around -2°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec10927375366716759442717
Data source: Temperature data for Cass Lake 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 Cass Lake

In Cass Lake in May, the total precipitation amount is 51 mm (2.0 in), spread over a duration of 8 days.

May Precipitation Trends in Cass Lake

The chart displays monthly precipitation patterns in Cass Lake, 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 Cass Lake, May typically receives around 51 mm (2.0 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec2225275851758573109983147
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Cass Lake

In Cass Lake in May humidity is 76%. With an average temperature of 12°C (53°F), this humidity feels like a damp chill that settles into your bones, making outdoor activities a bit uncomfortable and necessitating layers to stay warm while exploring.

May Average Humidity in Cass Lake

This chart illustrates the average monthly humidity levels in Cass Lake, 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 Cass Lake is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%93%88%83%76%76%76%77%77%82%88%89%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Cass Lake

In Cass Lake in May, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Cass Lake.

Maximum UV Index Levels in Cass Lake for May

The chart shows the monthly maximum UV Index (UVI) for Cass Lake 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 Cass Lake typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235789987432
Data source: Cass Lake 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 Cass Lake Compares to Other Months

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

This table compares monthly weather conditions in Cass Lake, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-12°C (10°F)22 mm (0.9 inches)92%low
February Weather-13°C (10°F)25 mm (1.0 inches)93%moderate
March Weather-3°C (27°F)27 mm (1.1 inches)88%moderate
April Weather3°C (37°F)58 mm (2.3 inches)83%high
May Weather12°C (53°F)51 mm (2.0 inches)76%very high
June Weather19°C (66°F)75 mm (2.9 inches)76%very high
July Weather21°C (71°F)85 mm (3.3 inches)76%very high
August Weather20°C (67°F)73 mm (2.9 inches)77%very high
September Weather15°C (59°F)109 mm (4.3 inches)77%high
October Weather7°C (44°F)98 mm (3.8 inches)82%moderate
November Weather-3°C (28°F)31 mm (1.2 inches)87%moderate
December Weather-8°C (17°F)47 mm (1.9 inches)89%low

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