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May Weather in Montesano, United States

Last updated: June 24, 2025

In May, the average temperature in Montesano, United States hovers around 12°C (55°F). Expect a minimum of 3°C (38°F) on cooler days, while temperatures can soar up to 30°C (85°F) during warmer spells. With an average precipitation of 68 mm (2.7 in) spread over 10 days, and humidity levels at a notable 84%, it’s a month that blends warmth with occasional rain.

May Temperature in Montesano

In May in Montesano, the average temperature is 12°C (55°F). Maximum temperatures can reach 30°C (85°F), while minimums can drop as low as 3°C (38°F). This range makes it a great time to explore the outdoors while being prepared for both warm and cooler weather.

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

The chart illustrates May temperature patterns in Montesano, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Montesano, May typically has an average temperature of 12°C (55°F), with highs reaching up to 30°C (85°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec424044495459626360514641
Data source: Temperature data for Montesano 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 Montesano

In Montesano in May, the precipitation amount is 68 mm (2.7 in) over a span of 10 days.

May Precipitation Trends in Montesano

The chart displays monthly precipitation patterns in Montesano, 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 Montesano, May typically receives around 68 mm (2.7 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec24617514712968561114100165245234
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Montesano

In Montesano in May, humidity is 84%. With an average temperature of 12°C (55°F), this humidity feels like a thick blanket wrapping around you, making it a challenge for traveling as you might feel sticky and uncomfortable while exploring the sights.

May Average Humidity in Montesano

This chart illustrates the average monthly humidity levels in Montesano, 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 Montesano is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%85%83%84%84%82%73%74%83%86%87%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Montesano

In Montesano 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 Montesano.

Maximum UV Index Levels in Montesano for May

The chart shows the monthly maximum UV Index (UVI) for Montesano 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 Montesano typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235699987532
Data source: Montesano 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 Montesano Compares to Other Months

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

This table compares monthly weather conditions in Montesano, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)246 mm (9.7 inches)86%low
February Weather5°C (40°F)175 mm (6.9 inches)84%moderate
March Weather7°C (45°F)147 mm (5.8 inches)85%moderate
April Weather9°C (49°F)129 mm (5.1 inches)83%high
May Weather12°C (55°F)68 mm (2.7 inches)84%very high
June Weather15°C (59°F)56 mm (2.2 inches)84%very high
July Weather17°C (62°F)11 mm (0.4 inches)82%very high
August Weather17°C (64°F)14 mm (0.5 inches)73%very high
September Weather15°C (60°F)100 mm (3.9 inches)74%high
October Weather10°C (51°F)165 mm (6.5 inches)83%moderate
November Weather8°C (46°F)245 mm (9.6 inches)86%moderate
December Weather5°C (41°F)234 mm (9.2 inches)87%low

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