2025 Compare Climate & Weather:
Greeley, CO vs Green River, WY

Highlights

On average, there are 235 sunny days per year in Green River. Greeley averages 244 sunny days per year. The US average is 205 sunny days.

Green River, Wyoming gets 9.1 inches of rain, on average, per year. Greeley, Colorado gets 14.8 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Green River averages 39.4 inches of snow per year. Greeley averages 39.5 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Green River, Wyoming
Summer High: the July high is around 86.8 degrees
Winter Low: the January low is 8.5
Rain: averages 9.1 inches of rain a year
Snow: averages 39.4 inches of snow a year

Greeley, Colorado
Summer High: the July high is around 90.2 degrees
Winter Low: the January low is 14.7
Rain: averages 14.8 inches of rain a year
Snow: averages 39.5 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Green River is 6.9 (10=best), which means it is more comfortable than most places in Wyoming.

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

Today's Weather - Greeley, CO

61°F

Today's Weather - Green River, WY

62°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Greeley / Green River

July is the hottest month for Greeley with an average high temperature of 90.2°, which ranks it as warmer than most places in Colorado. In Greeley, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Greeley are September, May and June.

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

December has the coldest nighttime temperatures for Greeley with an average of 14.5°. This is about average compared to other places in Colorado.

January has the coldest nighttime temperatures for Green River with an average of 8.5°. This is about average compared to other places in Wyoming.

In Greeley, there are 44.6 days annually when the high temperature is over 90°, which is hotter than most places in Colorado.

In Green River, there are 19.0 days annually when the high temperature is over 90°, which is about average compared to other places in Wyoming.

In Greeley, there are 164.1 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Colorado.

In Green River, there are 189.6 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Wyoming.

In Greeley, there are 8.2 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Colorado.

In Green River, there are 17.7 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Wyoming.

May is the wettest month in Greeley with 2.4 inches of rain, and the driest month is February with 0.4 inches. The wettest season is Summer with 37% of yearly precipitation and 9% occurs in Spring, which is the driest season. The annual rainfall of 14.8 inches in Greeley means that it is drier than most places in Colorado.


May is the wettest month in Green River with 1.3 inches of rain, and the driest month is January with 0.4 inches. The wettest season is Summer with 31% of yearly precipitation and 15% occurs in Spring, which is the driest season. The annual rainfall of 9.1 inches in Green River means that it is drier than most places in Wyoming.

May is the rainiest month in Greeley with 10.1 days of rain, and January is the driest month with only 4.0 rainy days. There are 76.6 rainy days annually in Greeley, which is less rainy than most places in Colorado. The rainiest season is Summer when it rains 31% of the time and the driest is Spring with only a 16% chance of a rainy day.

May is the rainiest month in Green River with 7.7 days of rain, and January is the driest month with only 4.9 rainy days. There are 70.8 rainy days annually in Green River, which is less rainy than most places in Wyoming. The rainiest season is Summer when it rains 30% of the time and the driest is Spring with only a 22% chance of a rainy day.

An annual snowfall of 39.5 inches in Greeley means that it is less snowy than most places in Colorado.

An annual snowfall of 39.4 inches in Green River means that it is less snowy than most places in Wyoming.

March is the snowiest month in Greeley with 8.5 inches of snow, and 9 months of the year have significant snowfall.

February is the snowiest month in Green River with 7.2 inches of snow, and 8 months of the year have significant snowfall.