Chehalis (WA) Climate by Month
The climate in Chehalis is marked by big temperature swings throughout the year.
Temperatures range from warm during the warmest months
to cold in the cooler months.
It also has a notably wet climate with much precipitation.
Let's now guide you through the climate details for a complete overview.
Average day and night temperature
In Chehalis, temperatures differ significantly between summer and winter months. Average daytime temperatures range from a comfortable 27°C in August, the warmest time of the year, to a chilly 7°C during cooler months like December. At night, temperatures typically average around 1°C during these months.
The mean minimum and maximum temperatures throughout the year
Precipitation and rainy days
Chehalis experiences significant rain/snowfall throughout the year, averaging 1116 mm of precipitation annually. Significant seasonal changes in precipitation occur throughout the year. During the wetter season, November receives heavy rainfall, averaging 195 mm of precipitation, recorded across 20 rainy days. In contrast, the drier season, July brings less rainfall, with 12 mm over 4 rainy days.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
The best time of year to visit Chehalis in the United States of America
During the months of June and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.Other facts from our historical weather data:
Most rainfall (rainy season) is seen in January, November and December.
Yes, the months of July and August are very dry.
August has an average maximum temperature of 27°C and is the warmest month of the year.
The coldest month is December with an average maximum temperature of 7°C.
November tops the wettest month list with 195 mm of rainfall.
July is the driest month with 12 mm of precipitation.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
