2025 Compare Climate & Weather:
Ann Arbor, MI vs Fort Collins, CO

Highlights

On average, there are 237 sunny days per year in Fort Collins. Ann Arbor averages 178 sunny days per year. The US average is 205 sunny days.

Fort Collins, Colorado gets 15.6 inches of rain, on average, per year. Ann Arbor, Michigan gets 36 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Fort Collins averages 48.1 inches of snow per year. Ann Arbor averages 43 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Fort Collins, Colorado
Summer High: the July high is around 87 degrees
Winter Low: the January low is 15.3
Rain: averages 15.6 inches of rain a year
Snow: averages 48.1 inches of snow a year

Ann Arbor, Michigan
Summer High: the July high is around 82.8 degrees
Winter Low: the January low is 16.5
Rain: averages 36 inches of rain a year
Snow: averages 43 inches of snow a year

BestPlaces Comfort Index

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

The annual BestPlaces Comfort Index for Ann Arbor is 6.7 (10=best), which means it is more comfortable than most places in Michigan.

Today's Weather - Ann Arbor, MI

46°F

Today's Weather - Fort Collins, CO

40°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Ann Arbor / Fort Collins

July is the hottest month for Ann Arbor with an average high temperature of 82.8°, which ranks it as warmer than most places in Michigan. In Ann Arbor, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Ann Arbor are June, August and September.

July is the hottest month for Fort Collins with an average high temperature of 87.0°, which ranks it as about average compared to other places in Colorado. In Fort Collins, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Fort Collins are September, June and August.

January has the coldest nighttime temperatures for Ann Arbor with an average of 16.5°. This is warmer than most places in Michigan.

December has the coldest nighttime temperatures for Fort Collins with an average of 14.9°. This is about average compared to other places in Colorado.

In Ann Arbor, there are 5.8 days annually when the high temperature is over 90°, which is about average compared to other places in Michigan.

In Fort Collins, there are 23.6 days annually when the high temperature is over 90°, which is about average compared to other places in Colorado.

In Ann Arbor, there are 140.9 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Michigan.

In Fort Collins, there are 163.6 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Colorado.

In Ann Arbor, there are 3.9 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Michigan.

In Fort Collins, there are 7.1 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Colorado.

June is the wettest month in Ann Arbor with 3.7 inches of rain, and the driest month is February with 2.2 inches. The wettest season is Autumn with 30% of yearly precipitation and 20% occurs in Spring, which is the driest season. The annual rainfall of 36.0 inches in Ann Arbor means that it is wetter than most places in Michigan.


May is the wettest month in Fort Collins with 2.4 inches of rain, and the driest month is January with 0.4 inches. The wettest season is Summer with 39% of yearly precipitation and 8% occurs in Spring, which is the driest season. The annual rainfall of 15.6 inches in Fort Collins means that it is drier than most places in Colorado.

December is the rainiest month in Ann Arbor with 13.9 days of rain, and September is the driest month with only 9.6 rainy days. There are 136.9 rainy days annually in Ann Arbor, which is rainier than most places in Michigan. The rainiest season is Spring when it rains 28% of the time and the driest is Autumn with only a 23% chance of a rainy day.

May is the rainiest month in Fort Collins with 11.2 days of rain, and December is the driest month with only 4.5 rainy days. There are 89.8 rainy days annually in Fort Collins, which is rainier than most places in Colorado. The rainiest season is Autumn when it rains 31% of the time and the driest is Spring with only a 16% chance of a rainy day.

An annual snowfall of 43.0 inches in Ann Arbor means that it is less snowy than most places in Michigan.

An annual snowfall of 48.1 inches in Fort Collins means that it is about average compared to other places in Colorado.

January is the snowiest month in Ann Arbor with 12.4 inches of snow, and 6 months of the year have significant snowfall.

March is the snowiest month in Fort Collins with 10.9 inches of snow, and 9 months of the year have significant snowfall.