2025 Compare Climate & Weather:
Marshalltown, IA vs Littleton, CO

Highlights

On average, there are 246 sunny days per year in Littleton. Marshalltown averages 196 sunny days per year. The US average is 205 sunny days.

Littleton, Colorado gets 18.1 inches of rain, on average, per year. Marshalltown, Iowa gets 35.6 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Littleton averages 68.9 inches of snow per year. Marshalltown averages 25.5 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Littleton, Colorado
Summer High: the July high is around 86.9 degrees
Winter Low: the January low is 17.8
Rain: averages 18.1 inches of rain a year
Snow: averages 68.9 inches of snow a year

Marshalltown, Iowa
Summer High: the July high is around 83.7 degrees
Winter Low: the January low is 9.6
Rain: averages 35.6 inches of rain a year
Snow: averages 25.5 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Littleton is 7.3 (10=best), which means it is more comfortable than most places in Colorado.

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

Today's Weather - Marshalltown, IA

68°F

Today's Weather - Littleton, CO

68°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Marshalltown / Littleton

July is the hottest month for Marshalltown with an average high temperature of 83.7°, which ranks it as cooler than most places in Iowa. In Marshalltown, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Marshalltown are June, September and August.

July is the hottest month for Littleton with an average high temperature of 86.9°, which ranks it as about average compared to other places in Colorado. In Littleton, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Littleton are September, June and August.

January has the coldest nighttime temperatures for Marshalltown with an average of 9.6°. This is about average compared to other places in Iowa.

December has the coldest nighttime temperatures for Littleton with an average of 16.8°. This is warmer than most places in Colorado.

In Marshalltown, there are 10.2 days annually when the high temperature is over 90°, which is cooler than most places in Iowa.

In Littleton, there are 23.4 days annually when the high temperature is over 90°, which is about average compared to other places in Colorado.

In Marshalltown, there are 151.3 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Iowa.

In Littleton, there are 151.6 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Colorado.

In Marshalltown, there are 19.1 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Iowa.

In Littleton, there are 6.3 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Colorado.

June is the wettest month in Marshalltown with 5.3 inches of rain, and the driest month is January with 0.9 inches. The wettest season is Autumn with 40% of yearly precipitation and 8% occurs in Spring, which is the driest season. The annual rainfall of 35.6 inches in Marshalltown means that it is about average compared to other places in Iowa.


May is the wettest month in Littleton with 2.5 inches of rain, and the driest month is January with 0.6 inches. The wettest season is Summer with 35% of yearly precipitation and 12% occurs in Spring, which is the driest season. The annual rainfall of 18.1 inches in Littleton means that it is wetter than most places in Colorado.

May is the rainiest month in Marshalltown with 11.2 days of rain, and January is the driest month with only 5.1 rainy days. There are 92.7 rainy days annually in Marshalltown, which is less rainy than most places in Iowa. The rainiest season is Summer when it rains 30% of the time and the driest is Spring with only a 18% chance of a rainy day.

May is the rainiest month in Littleton with 9.8 days of rain, and January is the driest month with only 4.7 rainy days. There are 84.4 rainy days annually in Littleton, 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 17% chance of a rainy day.

An annual snowfall of 25.5 inches in Marshalltown means that it is less snowy than most places in Iowa.

An annual snowfall of 68.9 inches in Littleton means that it is snowier than most places in Colorado.

December is the snowiest month in Marshalltown with 7.3 inches of snow, and 6 months of the year have significant snowfall.

March is the snowiest month in Littleton with 13.5 inches of snow, and 9 months of the year have significant snowfall.