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May Weather in Washougal, United States

Last updated: June 24, 2025

In Washougal, United States, the average temperature in May hovers around 13°C (56°F), with a range that can dip to a brisk 2°C (36°F) and rise up to a warm 31°C (89°F). Expect 97 mm (3.8 in) of precipitation spread over about 13 days, contributing to an average humidity level of 80%. Perfect for those who enjoy a lush, verdant environment!

May Temperature in Washougal

In May in Washougal, the average temperature is 13°C (56°F). Maximums can reach 31°C (89°F), and minimums can be as low as 2°C (36°F). This makes Washougal a great destination for travelers looking for comfortable weather with the chance to experience both warm days and cooler evenings.

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

The chart illustrates May temperature patterns in Washougal, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Washougal, May typically has an average temperature of 13°C (56°F), with highs reaching up to 31°C (89°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec393843495561666861514539
Data source: Temperature data for Washougal 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 Washougal

In Washougal in May, the precipitation amount is 97 mm (3.8 in) over the course of 13 days.

May Precipitation Trends in Washougal

The chart displays monthly precipitation patterns in Washougal, 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 Washougal, May typically receives around 97 mm (3.8 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec25831019918397831215114229276297
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Washougal

In Washougal in May humidity is 80%. With average temperature 13°C (56°F) this humidity feels like a damp chill that seeps into your bones, making outdoor exploration more challenging and necessitating layered clothing for comfort.

May Average Humidity in Washougal

This chart illustrates the average monthly humidity levels in Washougal, 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 Washougal is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%87%86%85%80%82%79%63%59%78%88%88%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Washougal

In Washougal 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 Washougal.

Maximum UV Index Levels in Washougal for May

The chart shows the monthly maximum UV Index (UVI) for Washougal 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 Washougal typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2356991087532
Data source: Washougal 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 Washougal Compares to Other Months

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

This table compares monthly weather conditions in Washougal, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)258 mm (10.1 inches)86%low
February Weather3°C (38°F)310 mm (12.2 inches)87%moderate
March Weather6°C (44°F)199 mm (7.8 inches)86%moderate
April Weather9°C (49°F)183 mm (7.2 inches)85%high
May Weather13°C (56°F)97 mm (3.8 inches)80%very high
June Weather16°C (61°F)83 mm (3.3 inches)82%very high
July Weather19°C (67°F)11 mm (0.5 inches)78%very high
August Weather20°C (68°F)15 mm (0.6 inches)62%very high
September Weather16°C (62°F)114 mm (4.5 inches)59%high
October Weather10°C (51°F)229 mm (9.0 inches)78%moderate
November Weather7°C (45°F)276 mm (10.9 inches)88%moderate
December Weather4°C (40°F)297 mm (11.7 inches)88%low

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