2025 Compare Climate & Weather:
Phoenix, AZ vs Lewistown, MT

Highlights

On average, there are 196 sunny days per year in Lewistown. Phoenix averages 299 sunny days per year. The US average is 205 sunny days.

Lewistown, Montana gets 15.8 inches of rain, on average, per year. Phoenix, Arizona gets 9.2 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Lewistown averages 72.3 inches of snow per year. Phoenix averages 0 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Lewistown, Montana
Summer High: the July high is around 81 degrees
Winter Low: the January low is 13.5
Rain: averages 15.8 inches of rain a year
Snow: averages 72.3 inches of snow a year

Phoenix, Arizona
Summer High: the July high is around 104.5 degrees
Winter Low: the January low is 43.2
Rain: averages 9.2 inches of rain a year
Snow: averages 0 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Lewistown is 6.5 (10=best), which means it is less comfortable than most places in Montana.

The annual BestPlaces Comfort Index for Phoenix is 7.3 (10=best), which means it is less comfortable than most places in Arizona.

Today's Weather - Phoenix, AZ

82°F

Today's Weather - Lewistown, MT

43°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Phoenix / Lewistown

July is the hottest month for Phoenix with an average high temperature of 104.5°, which ranks it as warmer than most places in Arizona. In Phoenix, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Phoenix are March, November and April.

August is the hottest month for Lewistown with an average high temperature of 81.1°, which ranks it as cooler than most places in Montana. In Lewistown, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Lewistown are July, August and June.

December has the coldest nighttime temperatures for Phoenix with an average of 42.2°. This is one of the warmest places in Arizona.

January has the coldest nighttime temperatures for Lewistown with an average of 13.5°. This is about average compared to other places in Montana.

In Phoenix, there are 163.2 days annually when the high temperature is over 90°, which is hotter than most places in Arizona.

In Lewistown, there are 10.5 days annually when the high temperature is over 90°, which is cooler than most places in Montana.

In Phoenix, there are 3.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Arizona.

In Lewistown, there are 175.3 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Montana.

In Phoenix, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Arizona.

In Lewistown, there are 19.2 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Montana.

August is the wettest month in Phoenix with 1.1 inches of rain, and the driest month is June with 0.0 inches. The wettest season is Spring with 35% of yearly precipitation and 16% occurs in Summer, which is the driest season. The annual rainfall of 9.2 inches in Phoenix means that it is drier than most places in Arizona.


June is the wettest month in Lewistown with 2.7 inches of rain, and the driest month is February with 0.4 inches. The wettest season is Autumn with 40% of yearly precipitation and 10% occurs in Spring, which is the driest season. The annual rainfall of 15.8 inches in Lewistown means that it is wetter than most places in Montana.

August is the rainiest month in Phoenix with 4.0 days of rain, and June is the driest month with only 0.4 rainy days. There are 33.1 rainy days annually in Phoenix, which is less rainy than most places in Arizona. The rainiest season is Spring when it rains 34% of the time and the driest is Summer with only a 20% chance of a rainy day.

June is the rainiest month in Lewistown with 12.7 days of rain, and February is the driest month with only 6.2 rainy days. There are 102.6 rainy days annually in Lewistown, which is rainier than most places in Montana. The rainiest season is Autumn when it rains 30% of the time and the driest is Spring with only a 19% chance of a rainy day.

There is rarely any recorded snowfall in Phoenix, ranking it as one of the least snowy places in Arizona.

An annual snowfall of 72.3 inches in Lewistown means that it is snowier than most places in Montana.

Any measurable snowfall is a rare occurance in Phoenix.

March is the snowiest month in Lewistown with 14.2 inches of snow, and 9 months of the year have significant snowfall.