2025 Compare Climate & Weather:
Sioux City, IA vs Montrose, CO

Highlights

On average, there are 245 sunny days per year in Montrose. Sioux City averages 210 sunny days per year. The US average is 205 sunny days.

Montrose, Colorado gets 11.6 inches of rain, on average, per year. Sioux City, Iowa gets 29.5 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Montrose averages 33.9 inches of snow per year. Sioux City averages 32.3 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Montrose, Colorado
Summer High: the July high is around 89.1 degrees
Winter Low: the January low is 15.3
Rain: averages 11.6 inches of rain a year
Snow: averages 33.9 inches of snow a year

Sioux City, Iowa
Summer High: the July high is around 85.5 degrees
Winter Low: the January low is 9.6
Rain: averages 29.5 inches of rain a year
Snow: averages 32.3 inches of snow a year

BestPlaces Comfort Index

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

The annual BestPlaces Comfort Index for Sioux City is 7.0 (10=best), which means it is more comfortable than most places in Iowa.

Today's Weather - Sioux City, IA

67°F

Today's Weather - Montrose, CO

46°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Sioux City / Montrose

July is the hottest month for Sioux City with an average high temperature of 85.5°, which ranks it as warmer than most places in Iowa. In Sioux City, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Sioux City are September, June and August.

July is the hottest month for Montrose with an average high temperature of 89.1°, which ranks it as warmer than most places in Colorado. In Montrose, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Montrose are September, May and June.

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

January has the coldest nighttime temperatures for Montrose with an average of 15.3°. This is about average compared to other places in Colorado.

In Sioux City, there are 19.8 days annually when the high temperature is over 90°, which is one of the hottest places in Iowa.

In Montrose, there are 28.5 days annually when the high temperature is over 90°, which is about average compared to other places in Colorado.

In Sioux City, there are 155.6 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Iowa.

In Montrose, there are 153.6 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Colorado.

In Sioux City, there are 18.9 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Iowa.

In Montrose, there are 3.2 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Colorado.

June is the wettest month in Sioux City with 4.1 inches of rain, and the driest month is February with 0.7 inches. The wettest season is Autumn with 37% of yearly precipitation and 8% occurs in Spring, which is the driest season. The annual rainfall of 29.5 inches in Sioux City means that it is one of the driest places in Iowa.


September is the wettest month in Montrose with 1.4 inches of rain, and the driest month is February with 0.6 inches. The wettest season is Winter with 31% of yearly precipitation and 18% occurs in Spring, which is the driest season. The annual rainfall of 11.6 inches in Montrose means that it is one of the driest places in Colorado.

May is the rainiest month in Sioux City with 10.3 days of rain, and February is the driest month with only 4.1 rainy days. There are 83.7 rainy days annually in Sioux City, which is one of the least rainy places in Iowa. 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.

August is the rainiest month in Montrose with 8.2 days of rain, and June is the driest month with only 4.4 rainy days. There are 79.2 rainy days annually in Montrose, which is about average compared to other places in Colorado. The rainiest season is Summer when it rains 26% of the time and the driest is Spring with only a 23% chance of a rainy day.

An annual snowfall of 32.3 inches in Sioux City means that it is snowier than most places in Iowa.

An annual snowfall of 33.9 inches in Montrose means that it is less snowy than most places in Colorado.

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

January is the snowiest month in Montrose with 8.7 inches of snow, and 7 months of the year have significant snowfall.