2025 Compare Climate & Weather:
Riverton, WY vs Palmer, AK

Highlights

On average, there are 130 sunny days per year in Palmer. Riverton averages 231 sunny days per year. The US average is 205 sunny days.

Palmer, Alaska gets 13.9 inches of rain, on average, per year. Riverton, Wyoming gets 9.5 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Palmer averages 47.8 inches of snow per year. Riverton averages 46.4 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Palmer, Alaska
Summer High: the July high is around 67.5 degrees
Winter Low: the January low is 9.2
Rain: averages 13.9 inches of rain a year
Snow: averages 47.8 inches of snow a year

Riverton, Wyoming
Summer High: the July high is around 87.3 degrees
Winter Low: the January low is 6
Rain: averages 9.5 inches of rain a year
Snow: averages 46.4 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Palmer is 5.9 (10=best), which means it is one of the most pleasant places in Alaska.

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

Today's Weather - Riverton, WY

53°F

Today's Weather - Palmer, AK

39°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Riverton / Palmer

July is the hottest month for Riverton with an average high temperature of 87.3°, which ranks it as warmer than most places in Wyoming. In Riverton, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Riverton are June, September and August.

July is the hottest month for Palmer with an average high temperature of 67.5°, which ranks it as warmer than most places in Alaska. In Palmer, there are 0 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Palmer are July, June and August.

December has the coldest nighttime temperatures for Riverton with an average of 5.8°. This is colder than most places in Wyoming.

January has the coldest nighttime temperatures for Palmer with an average of 9.2°. This is warmer than most places in Alaska.

In Riverton, there are 25.1 days annually when the high temperature is over 90°, which is hotter than most places in Wyoming.

In Palmer, there are 0.0 days annually when the high temperature is over 90°, which is about average compared to other places in Alaska.

In Riverton, there are 194.3 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Wyoming.

In Palmer, there are 179.8 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Alaska.

In Riverton, there are 27.0 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Wyoming.

In Palmer, there are 28.3 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Alaska.

May is the wettest month in Riverton with 1.7 inches of rain, and the driest month is January with 0.3 inches. The wettest season is Summer with 38% of yearly precipitation and 10% occurs in Spring, which is the driest season. The annual rainfall of 9.5 inches in Riverton means that it is drier than most places in Wyoming.


August is the wettest month in Palmer with 2.4 inches of rain, and the driest month is April with 0.2 inches. The wettest season is Autumn with 37% of yearly precipitation and 9% occurs in Summer, which is the driest season. The annual rainfall of 13.9 inches in Palmer means that it is drier than most places in Alaska.

May is the rainiest month in Riverton with 6.4 days of rain, and December is the driest month with only 2.2 rainy days. There are 44.5 rainy days annually in Riverton, which is one of the least rainy places in Wyoming. The rainiest season is Summer when it rains 32% of the time and the driest is Spring with only a 16% chance of a rainy day.

August is the rainiest month in Palmer with 12.6 days of rain, and April is the driest month with only 2.9 rainy days. There are 84.9 rainy days annually in Palmer, which is one of the least rainy places in Alaska. The rainiest season is Autumn when it rains 36% of the time and the driest is Summer with only a 14% chance of a rainy day.

An annual snowfall of 46.4 inches in Riverton means that it is about average compared to other places in Wyoming.

An annual snowfall of 47.8 inches in Palmer means that it is less snowy than most places in Alaska.

March is the snowiest month in Riverton with 8.2 inches of snow, and 9 months of the year have significant snowfall.

December is the snowiest month in Palmer with 10.7 inches of snow, and 7 months of the year have significant snowfall.