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Weather & Climate

Montesano, Washington, United States

Overview

Climate data and monthly weather averages for Montesano.

Key Metrics

Annual Avg
9.9°C
Summer Avg
15°C
Winter Avg
5°C
Record High
32.5°C
Record Low
-7.3°C
Annual Precipitation
1942.4 mm
Avg Humidity
88%
Summer Humidity
85%
Winter Humidity
92%

Monthly Averages

MonthHigh (°C)Avg (°C)Low (°C)Rain (mm)Humidity (%)Sunshine (h)Wind (kph)
Jan14.1°5.1°-6.5°307.293%3430.7
Feb15.3°5.2°-7.3°169.190%5533.5
Mar19.7°6.6°-2.7°229.789%8932.3
Apr24.8°8.4°-0.8°142.585%12530.6
May28.7°11.4°1.2°82.884%16232.1
Jun31.1°13.6°5.6°53.484%17224.1
Jul32.2°15.6°7.4°22.985%19718.8
Aug32.5°15.7°7.5°36.986%16830.7
Sep31.4°14.2°4.2°81.687%12129.2
Oct24.2°10.6°-2.3°20390%7533.2
Nov18.1°7.2°-6.2°312.692%3938.3
Dec14.2°4.7°-7.3°300.793%2840.8

Frequently Asked Questions

Sources: NASA POWER · Last updated: 2025

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