2025 Compare Climate & Weather:
Gillette, WY vs Flagstaff, AZ

Highlights

On average, there are 266 sunny days per year in Flagstaff. Gillette averages 209 sunny days per year. The US average is 205 sunny days.

Flagstaff, Arizona gets 20.7 inches of rain, on average, per year. Gillette, Wyoming gets 15.4 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Flagstaff averages 81 inches of snow per year. Gillette averages 52.6 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

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

Gillette, Wyoming
Summer High: the July high is around 86.8 degrees
Winter Low: the January low is 12.9
Rain: averages 15.4 inches of rain a year
Snow: averages 52.6 inches of snow a year

BestPlaces Comfort Index

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

The annual BestPlaces Comfort Index for Gillette is 6.8 (10=best), which means it is more comfortable than most places in Wyoming.

Today's Weather - Gillette, WY

60°F

Today's Weather - Flagstaff, AZ

58°F

Average Monthly High / Low (°F)

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

July is the hottest month for Gillette with an average high temperature of 86.8°, which ranks it as warmer than most places in Wyoming. In Gillette, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Gillette are June, September and August.

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.

December has the coldest nighttime temperatures for Gillette with an average of 12.1°. This is warmer than most places in Wyoming.

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

In Gillette, there are 28.1 days annually when the high temperature is over 90°, which is hotter than most places in Wyoming.

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 Gillette, there are 178.0 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Wyoming.

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 Gillette, there are 16.9 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Wyoming.

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.

May is the wettest month in Gillette with 2.8 inches of rain, and the driest month is January with 0.4 inches. The wettest season is Summer with 36% of yearly precipitation and 9% occurs in Spring, which is the driest season. The annual rainfall of 15.4 inches in Gillette means that it is wetter than most places in Wyoming.


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.

May is the rainiest month in Gillette with 9.8 days of rain, and January is the driest month with only 5.1 rainy days. There are 80.3 rainy days annually in Gillette, which is rainier than most places in Wyoming. The rainiest season is Summer when it rains 31% of the time and the driest is Spring with only a 20% chance of a rainy day.

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.

An annual snowfall of 52.6 inches in Gillette means that it is about average compared to other places in Wyoming.

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

March is the snowiest month in Gillette with 10.0 inches of snow, and 9 months of the year have significant snowfall.

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