2025 Compare Climate & Weather:
Flagstaff, AZ vs Chehalis, WA

Highlights

On average, there are 136 sunny days per year in Chehalis. Flagstaff averages 266 sunny days per year. The US average is 205 sunny days.

Chehalis, Washington gets 51.7 inches of rain, on average, per year. Flagstaff, Arizona gets 20.7 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Chehalis averages 2.4 inches of snow per year. Flagstaff averages 81 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Chehalis, Washington
Summer High: the July high is around 78.4 degrees
Winter Low: the January low is 34.3
Rain: averages 51.7 inches of rain a year
Snow: averages 2.4 inches of snow a year

Flagstaff, Arizona
Summer High: the July high is around 81.7 degrees
Winter Low: the January low is 14.3
Rain: averages 20.7 inches of rain a year
Snow: averages 81 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Chehalis is 7.2 (10=best), which means it is more comfortable than most places in Washington.

The annual BestPlaces Comfort Index for Flagstaff is 6.9 (10=best), which means it is one of the least comfortable places in Arizona.

Today's Weather - Flagstaff, AZ

57°F

Today's Weather - Chehalis, WA

55°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Flagstaff / Chehalis

July is the hottest month for Flagstaff with an average high temperature of 81.7°, which ranks it as one of the coolest places in Arizona. In Flagstaff, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Flagstaff are June, August and July.

August is the hottest month for Chehalis with an average high temperature of 79.5°, which ranks it as warmer than most places in Washington. In Chehalis, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Chehalis are July, August and September.

January has the coldest nighttime temperatures for Flagstaff with an average of 14.3°. This is one of the coldest places in Arizona.

December has the coldest nighttime temperatures for Chehalis with an average of 33.3°. This is about average compared to other places in Washington.

In Flagstaff, there are 3.4 days annually when the high temperature is over 90°, which is one of the coolest places in Arizona.

In Chehalis, there are 7.1 days annually when the high temperature is over 90°, which is hotter than most places in Washington.

In Flagstaff, there are 210.5 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Arizona.

In Chehalis, there are 58.3 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Washington.

In Flagstaff, there are 7.8 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Arizona.

In Chehalis, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Washington.

August is the wettest month in Flagstaff with 3.3 inches of rain, and the driest month is June with 0.3 inches. The wettest season is Autumn with 29% of yearly precipitation and 17% occurs in Summer, which is the driest season. The annual rainfall of 20.7 inches in Flagstaff means that it is wetter than most places in Arizona.


November is the wettest month in Chehalis with 8.5 inches of rain, and the driest month is July with 0.8 inches. The wettest season is Spring with 39% of yearly precipitation and 8% occurs in Autumn, which is the driest season. The annual rainfall of 51.7 inches in Chehalis means that it is wetter than most places in Washington.

August is the rainiest month in Flagstaff with 13.8 days of rain, and June is the driest month with only 2.8 rainy days. There are 83.4 rainy days annually in Flagstaff, which is one of the rainiest places in Arizona. The rainiest season is Autumn when it rains 34% of the time and the driest is Summer with only a 20% chance of a rainy day.

November is the rainiest month in Chehalis with 20.4 days of rain, and August is the driest month with only 5.1 rainy days. There are 171.0 rainy days annually in Chehalis, which is rainier than most places in Washington. The rainiest season is Spring when it rains 33% of the time and the driest is Autumn with only a 12% chance of a rainy day.

An annual snowfall of 81.0 inches in Flagstaff means that it is one of the snowiest places in Arizona.

An annual snowfall of 2.4 inches in Chehalis means that it is less snowy than most places in Washington.

January is the snowiest month in Flagstaff with 19.1 inches of snow, and 8 months of the year have significant snowfall.

February is the snowiest month in Chehalis with 0.7 inches of snow, and 3 months of the year have significant snowfall.