2025 Compare Climate & Weather:
Fort Madison, IA vs Sidney, MT

Highlights

On average, there are 201 sunny days per year in Sidney. Fort Madison averages 204 sunny days per year. The US average is 205 sunny days.

Sidney, Montana gets 14.2 inches of rain, on average, per year. Fort Madison, Iowa gets 39.3 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Sidney averages 33.2 inches of snow per year. Fort Madison averages 21.3 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Sidney, Montana
Summer High: the July high is around 87.2 degrees
Winter Low: the January low is 5.9
Rain: averages 14.2 inches of rain a year
Snow: averages 33.2 inches of snow a year

Fort Madison, Iowa
Summer High: the July high is around 86.3 degrees
Winter Low: the January low is 16.7
Rain: averages 39.3 inches of rain a year
Snow: averages 21.3 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Sidney is 6.7 (10=best), which means it is about average compared to other places in Montana.

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

Today's Weather - Fort Madison, IA

57°F

Today's Weather - Sidney, MT

49°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Fort Madison / Sidney

July is the hottest month for Fort Madison with an average high temperature of 86.3°, which ranks it as one of the hottest places in Iowa. In Fort Madison, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Fort Madison are September, June and May.

July is the hottest month for Sidney with an average high temperature of 87.2°, which ranks it as one of the hottest places in Montana. In Sidney, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Sidney are June, September and May.

January has the coldest nighttime temperatures for Fort Madison with an average of 16.7°. This is one of the warmest places in Iowa.

January has the coldest nighttime temperatures for Sidney with an average of 5.9°. This is colder than most places in Montana.

In Fort Madison, there are 19.0 days annually when the high temperature is over 90°, which is hotter than most places in Iowa.

In Sidney, there are 31.5 days annually when the high temperature is over 90°, which is one of the hottest places in Montana.

In Fort Madison, there are 114.6 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Iowa.

In Sidney, there are 173.0 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Montana.

In Fort Madison, there are 6.6 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Iowa.

In Sidney, there are 30.1 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Montana.

May is the wettest month in Fort Madison with 5.0 inches of rain, and the driest month is January with 1.4 inches. The wettest season is Autumn with 33% of yearly precipitation and 13% occurs in Spring, which is the driest season. The annual rainfall of 39.3 inches in Fort Madison means that it is one of the wettest places in Iowa.


June is the wettest month in Sidney with 2.8 inches of rain, and the driest month is February with 0.3 inches. The wettest season is Autumn with 46% of yearly precipitation and 8% occurs in Spring, which is the driest season. The annual rainfall of 14.2 inches in Sidney means that it is about average compared to other places in Montana.

May is the rainiest month in Fort Madison with 11.9 days of rain, and February is the driest month with only 7.1 rainy days. There are 107.6 rainy days annually in Fort Madison, which is rainier 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 21% chance of a rainy day.

June is the rainiest month in Sidney with 10.3 days of rain, and February is the driest month with only 3.9 rainy days. There are 76.9 rainy days annually in Sidney, which is less rainy than most places in Montana. The rainiest season is Autumn when it rains 32% of the time and the driest is Spring with only a 19% chance of a rainy day.

An annual snowfall of 21.3 inches in Fort Madison means that it is one of the least snowy places in Iowa.

An annual snowfall of 33.2 inches in Sidney means that it is less snowy than most places in Montana.

December is the snowiest month in Fort Madison with 6.3 inches of snow, and 6 months of the year have significant snowfall.

December is the snowiest month in Sidney with 7.9 inches of snow, and 8 months of the year have significant snowfall.