The remote server returned an error: (400) Bad Request.The remote server returned an error: (400) Bad Request. 2025 Compare Climate & Weather: Rock Springs, WY vs Hamilton, MT

2025 Compare Climate & Weather:
Rock Springs, WY vs Hamilton, MT

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Highlights

On average, there are 158 sunny days per year in Hamilton. Rock Springs averages 238 sunny days per year. The US average is 205 sunny days.

Hamilton, Montana gets 13.1 inches of rain, on average, per year. Rock Springs, Wyoming gets 8.9 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Hamilton averages 32.1 inches of snow per year. Rock Springs averages 40.6 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Hamilton, Montana
Summer High: the July high is around 84.2 degrees
Winter Low: the January low is 18.8
Rain: averages 13.1 inches of rain a year
Snow: averages 32.1 inches of snow a year

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

BestPlaces Comfort Index
Hamilton

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

6.8 / 10
July, August and June are the most pleasant months in Hamilton, while December and January are the least comfortable months.

Rock Springs

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

6.8 / 10
June, August and July are the most pleasant months in Rock Springs, while December and January are the least comfortable months.

Average Monthly High / Low (°F)
MonthRock Springs, WYHamilton, MT
January33° / 10°36° / 19°
February37° / 13°41° / 20°
March47° / 23°50° / 26°
April58° / 30°58° / 32°
May67° / 38°67° / 39°
June77° / 46°75° / 45°
July86° / 53°84° / 50°
August84° / 51°83° / 48°
September74° / 42°72° / 41°
October61° / 32°59° / 32°
November44° / 21°43° / 24°
December33° / 11°33° / 17°
Hot, Freezing, Rainy, Snowy Days: Rock Springs / Hamilton
MonthHot DaysFreezing DaysRainy DaysSnowy Days
January0 / 031 / 285 / 95 / 6
February0 / 028 / 265 / 85 / 4
March0 / 027 / 257 / 104 / 2
April0 / 019 / 157 / 93 / 1
May0 / 05 / 58 / 111 / 0
June1 / 10 / 06 / 110 / 0
July8 / 80 / 06 / 70 / 0
August5 / 60 / 06 / 80 / 0
September0 / 12 / 36 / 70 / 0
October0 / 016 / 156 / 81 / 0
November0 / 027 / 245 / 104 / 3
December0 / 031 / 296 / 105 / 6
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.

July is the hottest month for Hamilton with an average high temperature of 84.2°, which ranks it as about average compared to other places in Montana. In Hamilton, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Hamilton are June, August and September.
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.

December has the coldest nighttime temperatures for Hamilton with an average of 16.8°. This is warmer than most places in Montana.

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 Hamilton, there are 15.4 days annually when the high temperature is over 90°, which is cooler than most places in Montana.

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 Hamilton, there are 169.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Montana.

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.

In Hamilton, there are 7.7 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Montana.

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.


June is the wettest month in Hamilton with 1.7 inches of rain, and the driest month is February with 0.7 inches. The wettest season is Autumn with 29% of yearly precipitation and 20% occurs in Spring, which is the driest season. The annual rainfall of 13.1 inches in Hamilton means that it is drier than most places in Montana.

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.

June is the rainiest month in Hamilton with 11.0 days of rain, and July is the driest month with only 6.6 rainy days. There are 106.4 rainy days annually in Hamilton, which is rainier than most places in Montana. The rainiest season is Summer when it rains 28% of the time and the driest is Autumn with only a 24% chance of a rainy day.

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

An annual snowfall of 32.1 inches in Hamilton means that it is less snowy than most places in Montana.
February is the snowiest month in Rock Springs with 7.1 inches of snow, and 8 months of the year have significant snowfall.

December is the snowiest month in Hamilton with 9.4 inches of snow, and 6 months of the year have significant snowfall.

DID YOU KNOW?

Many people confuse Weather and Climate, but they are different. Weather refers to the conditions of the atmosphere over a short period of time, while Climate refers to the conditions of the atmosphere over a long period of time.

Weather, more specifically, refers to how the atmosphere behaves and its effects on life and human activities. Most people think of Weather in terms of what can be observed: temperature, humidity, precipitation, and cloudy/sunny conditions. Weather conditions constantly change on a minute-to-minute basis.

Climate is a record of the average weather conditions for a given place over a long period of time, often referred to as Climate Normals. A 30-year period of record is a common requirement to be considered a Climate Normal.

Reviews for Rock Springs    2 Reviews
Jill · Sherman Oaks, CA
re:
Over 16 years ago

Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't  More

   |    Reply
NC For Me · Apex, NC
re:
Over 16 years ago

Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but  More

   |    Reply

Start Your Review of Rock Springs

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Reviews for Hamilton    2 Reviews
Jill · Sherman Oaks, CA
re:
Over 16 years ago

Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't  More

   |    Reply
NC For Me · Apex, NC
re:
Over 16 years ago

Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but  More

   |    Reply

Start Your Review of Hamilton

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