2025 Compare Climate & Weather:
Waterloo, IA vs Fairfield, IA

Highlights

On average, there are 199 sunny days per year in Fairfield. Waterloo averages 194 sunny days per year. The US average is 205 sunny days.

Fairfield, Iowa gets 38 inches of rain, on average, per year. Waterloo, Iowa gets 35.7 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Fairfield averages 25.7 inches of snow per year. Waterloo averages 33.9 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Fairfield, Iowa
Summer High: the July high is around 87 degrees
Winter Low: the January low is 15.5
Rain: averages 38 inches of rain a year
Snow: averages 25.7 inches of snow a year

Waterloo, Iowa
Summer High: the July high is around 83.4 degrees
Winter Low: the January low is 8.4
Rain: averages 35.7 inches of rain a year
Snow: averages 33.9 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Fairfield is 7.1 (10=best), which means it is one of the most pleasant places in Iowa.

The annual BestPlaces Comfort Index for Waterloo is 6.7 (10=best), which means it is less comfortable than most places in Iowa.

Today's Weather - Waterloo, IA

62°F

Today's Weather - Fairfield, IA

64°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Waterloo / Fairfield

July is the hottest month for Waterloo with an average high temperature of 83.4°, which ranks it as cooler than most places in Iowa. In Waterloo, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Waterloo are June, August and September.

July is the hottest month for Fairfield with an average high temperature of 87.0°, which ranks it as one of the hottest places in Iowa. In Fairfield, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Fairfield are September, May and June.

January has the coldest nighttime temperatures for Waterloo with an average of 8.4°. This is colder than most places in Iowa.

January has the coldest nighttime temperatures for Fairfield with an average of 15.5°. This is one of the warmest places in Iowa.

In Waterloo, there are 11.5 days annually when the high temperature is over 90°, which is cooler than most places in Iowa.

In Fairfield, there are 24.2 days annually when the high temperature is over 90°, which is one of the hottest places in Iowa.

In Waterloo, there are 150.4 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Iowa.

In Fairfield, there are 123.9 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Iowa.

In Waterloo, there are 21.5 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Iowa.

In Fairfield, there are 9.9 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Iowa.

June is the wettest month in Waterloo with 5.2 inches of rain, and the driest month is January with 0.9 inches. The wettest season is Autumn with 41% of yearly precipitation and 9% occurs in Spring, which is the driest season. The annual rainfall of 35.7 inches in Waterloo means that it is about average compared to other places in Iowa.


May is the wettest month in Fairfield with 4.8 inches of rain, and the driest month is January with 1.4 inches. The wettest season is Autumn with 35% of yearly precipitation and 12% occurs in Spring, which is the driest season. The annual rainfall of 38.0 inches in Fairfield means that it is one of the wettest places in Iowa.

May is the rainiest month in Waterloo with 11.9 days of rain, and February is the driest month with only 6.5 rainy days. There are 105.3 rainy days annually in Waterloo, which is rainier than most places in Iowa. The rainiest season is Summer when it rains 29% of the time and the driest is Spring with only a 20% chance of a rainy day.

May is the rainiest month in Fairfield with 11.3 days of rain, and February is the driest month with only 6.6 rainy days. There are 99.6 rainy days annually in Fairfield, which is about average compared to other places in Iowa. The rainiest season is Summer when it rains 29% of the time and the driest is Spring with only a 21% chance of a rainy day.

An annual snowfall of 33.9 inches in Waterloo means that it is snowier than most places in Iowa.

An annual snowfall of 25.7 inches in Fairfield means that it is less snowy than most places in Iowa.

December is the snowiest month in Waterloo with 9.6 inches of snow, and 6 months of the year have significant snowfall.

February is the snowiest month in Fairfield with 7.1 inches of snow, and 6 months of the year have significant snowfall.