2025 Compare Climate & Weather:
Salt Lake City, UT vs Rock Springs, WY

Highlights

On average, there are 238 sunny days per year in Rock Springs. Salt Lake City averages 222 sunny days per year. The US average is 205 sunny days.

Rock Springs, Wyoming gets 8.9 inches of rain, on average, per year. Salt Lake City, Utah gets 19.5 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Rock Springs averages 40.6 inches of snow per year. Salt Lake City averages 53.6 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Rock Springs, Wyoming
Summer High: the July high is around 85.8 degrees
Winter Low: the January low is 10.1
Rain: averages 8.9 inches of rain a year
Snow: averages 40.6 inches of snow a year

Salt Lake City, Utah
Summer High: the July high is around 91 degrees
Winter Low: the January low is 23.3
Rain: averages 19.5 inches of rain a year
Snow: averages 53.6 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Rock Springs is 6.8 (10=best), which means it is more comfortable than most places in Wyoming.

The annual BestPlaces Comfort Index for Salt Lake City is 7.2 (10=best), which means it is more comfortable than most places in Utah.

Today's Weather - Salt Lake City, UT

48°F

Today's Weather - Rock Springs, WY

54°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Salt Lake City / Rock Springs

July is the hottest month for Salt Lake City with an average high temperature of 91.0°, which ranks it as warmer than most places in Utah. In Salt Lake City, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Salt Lake City are September, June and May.

July is the hottest month for Rock Springs with an average high temperature of 85.8°, which ranks it as about average compared to other places in Wyoming. In Rock Springs, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Rock Springs are June, September and August.

January has the coldest nighttime temperatures for Salt Lake City with an average of 23.3°. This is one of the warmest places in Utah.

January has the coldest nighttime temperatures for Rock Springs with an average of 10.1°. This is about average compared to other places in Wyoming.

In Salt Lake City, there are 41.8 days annually when the high temperature is over 90°, which is hotter than most places in Utah.

In Rock Springs, there are 14.2 days annually when the high temperature is over 90°, which is about average compared to other places in Wyoming.

In Salt Lake City, there are 104.8 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Utah.

In Rock Springs, there are 186.1 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Wyoming.

In Salt Lake City, there are 0.6 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Utah.

In Rock Springs, there are 15.3 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Wyoming.

April is the wettest month in Salt Lake City with 2.4 inches of rain, and the driest month is July with 0.7 inches. The wettest season is Summer with 36% of yearly precipitation and 14% occurs in Autumn, which is the driest season. The annual rainfall of 19.5 inches in Salt Lake City means that it is wetter than most places in Utah.


May is the wettest month in Rock Springs with 1.3 inches of rain, and the driest month is January with 0.4 inches. The wettest season is Summer with 32% of yearly precipitation and 16% occurs in Spring, which is the driest season. The annual rainfall of 8.9 inches in Rock Springs means that it is drier than most places in Wyoming.

April is the rainiest month in Salt Lake City with 9.7 days of rain, and July is the driest month with only 4.1 rainy days. There are 91.4 rainy days annually in Salt Lake City, which is rainier than most places in Utah. The rainiest season is Spring when it rains 31% of the time and the driest is Autumn with only a 16% chance of a rainy day.

May is the rainiest month in Rock Springs with 7.9 days of rain, and February is the driest month with only 5.1 rainy days. There are 72.1 rainy days annually in Rock Springs, which is about average compared to other places in Wyoming. The rainiest season is Summer when it rains 30% of the time and the driest is Spring with only a 22% chance of a rainy day.

An annual snowfall of 53.6 inches in Salt Lake City means that it is snowier than most places in Utah.

An annual snowfall of 40.6 inches in Rock Springs means that it is less snowy than most places in Wyoming.

December is the snowiest month in Salt Lake City with 12.1 inches of snow, and 7 months of the year have significant snowfall.

February is the snowiest month in Rock Springs with 7.1 inches of snow, and 8 months of the year have significant snowfall.