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May Weather in Snohomish, United States

Last updated: June 24, 2025

In Snohomish, United States, the average temperature in May hovers around 13°C (55°F). Expect a range where the minimum temperature can drop to 2°C (36°F), while the maximum can reach a warm 29°C (85°F). With an average precipitation of 99 mm (3.9 in) spread over 13 days, don't forget your umbrella! The atmosphere tends to be quite moist, boasting an average humidity of 81%.

May Temperature in Snohomish

In May in Snohomish, the average temperature is 13°C (55°F). The maximum can reach 29°C (85°F), while the minimum can drop to as low as 2°C (36°F). This variability makes it essential for travelers to pack accordingly, ensuring comfort and preparedness for a range of weather conditions.

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

The chart illustrates May temperature patterns in Snohomish, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Snohomish, May typically has an average temperature of 13°C (55°F), with highs reaching up to 29°C (85°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec403843485559646459494439
Data source: Temperature data for Snohomish 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 Snohomish

In Snohomish in May, the precipitation amount is 99 mm (3.9 in) over the course of 13 days.

May Precipitation Trends in Snohomish

The chart displays monthly precipitation patterns in Snohomish, 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 Snohomish, May typically receives around 99 mm (3.9 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec25527220317299903232131246302296
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Snohomish

In Snohomish in May, humidity is 81%. With an average temperature of 13°C (55°F), this humidity feels like a damp blanket wrapping around you, making strolls outdoors feel heavy and slightly oppressive, which may be less than ideal for travelers looking to explore comfortably.

May Average Humidity in Snohomish

This chart illustrates the average monthly humidity levels in Snohomish, 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 Snohomish is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%87%84%81%82%79%63%62%83%89%88%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Snohomish

In Snohomish 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 Snohomish.

Maximum UV Index Levels in Snohomish for May

The chart shows the monthly maximum UV Index (UVI) for Snohomish 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 Snohomish typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689987522
Data source: Snohomish 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 Snohomish Compares to Other Months

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

This table compares monthly weather conditions in Snohomish, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)255 mm (10.0 inches)86%low
February Weather3°C (38°F)272 mm (10.7 inches)86%moderate
March Weather6°C (44°F)203 mm (8.0 inches)87%moderate
April Weather9°C (49°F)172 mm (6.8 inches)84%high
May Weather13°C (55°F)99 mm (3.9 inches)81%very high
June Weather15°C (60°F)89 mm (3.5 inches)82%very high
July Weather18°C (64°F)32 mm (1.3 inches)79%very high
August Weather18°C (64°F)32 mm (1.3 inches)63%very high
September Weather15°C (59°F)131 mm (5.2 inches)62%high
October Weather9°C (49°F)246 mm (9.7 inches)83%moderate
November Weather7°C (44°F)302 mm (11.9 inches)89%low
December Weather4°C (39°F)295 mm (11.6 inches)88%low

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