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May Weather in Mukilteo, United States

Last updated: June 24, 2025

In May, the average temperature in Mukilteo, United States hovers around 13°C (55°F), with a minimum dive to 4°C (40°F) and a pleasant maximum reaching 25°C (77°F). Expect about 87 mm (3.4 in) of precipitation spread over 12 days, leading to a relatively high average humidity of 81%. Prepare accordingly for a mix of cool and damp days!

May Temperature in Mukilteo

In May in Mukilteo, the average temperature is 13°C (55°F). The maximum can reach 25°C (77°F), while the minimum can drop as low as 4°C (40°F). Be prepared for a mix of cool and mild weather, making it a great time to explore outdoor attractions and enjoy local activities.

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

The chart illustrates May temperature patterns in Mukilteo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mukilteo, May typically has an average temperature of 13°C (55°F), with highs reaching up to 25°C (77°F) and lows dropping to around 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec424044495559636460514641
Data source: Temperature data for Mukilteo 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 Mukilteo

In Mukilteo in May, the precipitation amount is 87 mm (3.4 in) over the course of 12 days.

May Precipitation Trends in Mukilteo

The chart displays monthly precipitation patterns in Mukilteo, 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 Mukilteo, May typically receives around 87 mm (3.4 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec21920916513887823133114196254247
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Mukilteo

In Mukilteo 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 Mukilteo

This chart illustrates the average monthly humidity levels in Mukilteo, 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 Mukilteo 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 Mukilteo

In Mukilteo 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 Mukilteo.

Maximum UV Index Levels in Mukilteo for May

The chart shows the monthly maximum UV Index (UVI) for Mukilteo 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 Mukilteo typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689987521
Data source: Mukilteo 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 Mukilteo Compares to Other Months

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

This table compares monthly weather conditions in Mukilteo, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)219 mm (8.6 inches)86%low
February Weather4°C (40°F)209 mm (8.2 inches)86%moderate
March Weather7°C (44°F)165 mm (6.5 inches)87%moderate
April Weather9°C (49°F)138 mm (5.4 inches)84%high
May Weather13°C (55°F)87 mm (3.4 inches)81%very high
June Weather15°C (60°F)81 mm (3.2 inches)82%very high
July Weather17°C (64°F)31 mm (1.2 inches)79%very high
August Weather18°C (65°F)33 mm (1.3 inches)63%very high
September Weather15°C (60°F)114 mm (4.5 inches)62%high
October Weather11°C (51°F)196 mm (7.7 inches)83%moderate
November Weather8°C (46°F)254 mm (10.0 inches)89%low
December Weather5°C (42°F)247 mm (9.7 inches)88%low

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