2025 Compare Climate & Weather:
Riverton, UT vs Idaho Falls, ID

Highlights

On average, there are 201 sunny days per year in Idaho Falls. Riverton averages 225 sunny days per year. The US average is 205 sunny days.

Idaho Falls, Idaho gets 12.2 inches of rain, on average, per year. Riverton, Utah gets 16.4 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Idaho Falls averages 38.9 inches of snow per year. Riverton averages 43.2 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Idaho Falls, Idaho
Summer High: the July high is around 86.2 degrees
Winter Low: the January low is 12.9
Rain: averages 12.2 inches of rain a year
Snow: averages 38.9 inches of snow a year

Riverton, Utah
Summer High: the July high is around 91.7 degrees
Winter Low: the January low is 20.2
Rain: averages 16.4 inches of rain a year
Snow: averages 43.2 inches of snow a year

BestPlaces Comfort Index

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

The annual BestPlaces Comfort Index for Riverton is 7.1 (10=best), which means it is more comfortable than most places in Utah.

Today's Weather - Riverton, UT

56°F

Today's Weather - Idaho Falls, ID

52°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Riverton / Idaho Falls

July is the hottest month for Riverton with an average high temperature of 91.7°, which ranks it as warmer than most places in Utah. In Riverton, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Riverton are September, May and June.

July is the hottest month for Idaho Falls with an average high temperature of 86.2°, which ranks it as warmer than most places in Idaho. In Idaho Falls, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Idaho Falls are June, September and August.

January has the coldest nighttime temperatures for Riverton with an average of 20.2°. This is warmer than most places in Utah.

January has the coldest nighttime temperatures for Idaho Falls with an average of 12.9°. This is colder than most places in Idaho.

In Riverton, there are 45.9 days annually when the high temperature is over 90°, which is hotter than most places in Utah.

In Idaho Falls, there are 20.2 days annually when the high temperature is over 90°, which is about average compared to other places in Idaho.

In Riverton, there are 132.7 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Utah.

In Idaho Falls, there are 172.4 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Idaho.

In Riverton, there are 2.7 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Utah.

In Idaho Falls, there are 10.7 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Idaho.

May is the wettest month in Riverton with 1.9 inches of rain, and the driest month is July with 0.7 inches. The wettest season is Summer with 31% of yearly precipitation and 16% occurs in Autumn, which is the driest season. The annual rainfall of 16.4 inches in Riverton means that it is about average compared to other places in Utah.


May is the wettest month in Idaho Falls with 1.7 inches of rain, and the driest month is July with 0.6 inches. The wettest season is Summer with 34% of yearly precipitation and 20% occurs in Autumn, which is the driest season. The annual rainfall of 12.2 inches in Idaho Falls means that it is drier than most places in Idaho.

March is the rainiest month in Riverton with 8.6 days of rain, and July is the driest month with only 4.4 rainy days. There are 83.9 rainy days annually in Riverton, which is rainier than most places in Utah. The rainiest season is Summer when it rains 30% of the time and the driest is Autumn with only a 18% chance of a rainy day.

January is the rainiest month in Idaho Falls with 10.5 days of rain, and July is the driest month with only 4.6 rainy days. There are 93.3 rainy days annually in Idaho Falls, which is about average compared to other places in Idaho. The rainiest season is Spring when it rains 32% of the time and the driest is Autumn with only a 19% chance of a rainy day.

An annual snowfall of 43.2 inches in Riverton means that it is about average compared to other places in Utah.

An annual snowfall of 38.9 inches in Idaho Falls means that it is less snowy than most places in Idaho.

December is the snowiest month in Riverton with 10.9 inches of snow, and 7 months of the year have significant snowfall.

December is the snowiest month in Idaho Falls with 10.9 inches of snow, and 7 months of the year have significant snowfall.