2025 Compare Climate & Weather:
St. Louis, MO vs Moscow, ID

Highlights

On average, there are 169 sunny days per year in Moscow. St. Louis averages 202 sunny days per year. The US average is 205 sunny days.

Moscow, Idaho gets 21.6 inches of rain, on average, per year. St. Louis, Missouri gets 42.2 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Moscow averages 42.8 inches of snow per year. St. Louis averages 15.5 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Moscow, Idaho
Summer High: the July high is around 82.7 degrees
Winter Low: the January low is 25.8
Rain: averages 21.6 inches of rain a year
Snow: averages 42.8 inches of snow a year

St. Louis, Missouri
Summer High: the July high is around 88.5 degrees
Winter Low: the January low is 22.8
Rain: averages 42.2 inches of rain a year
Snow: averages 15.5 inches of snow a year

BestPlaces Comfort Index

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

The annual BestPlaces Comfort Index for St. Louis is 7.2 (10=best), which means it is more comfortable than most places in Missouri.

Today's Weather - St. Louis, MO

75°F

Today's Weather - Moscow, ID

50°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: St. Louis / Moscow

July is the hottest month for St. Louis with an average high temperature of 88.5°, which ranks it as about average compared to other places in Missouri. In St. Louis, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for St. Louis are May, September and June.

August is the hottest month for Moscow with an average high temperature of 83.7°, which ranks it as cooler than most places in Idaho. In Moscow, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Moscow are September, July and June.

January has the coldest nighttime temperatures for St. Louis with an average of 22.8°. This is warmer than most places in Missouri.

December has the coldest nighttime temperatures for Moscow with an average of 24.1°. This is one of the warmest places in Idaho.

In St. Louis, there are 36.0 days annually when the high temperature is over 90°, which is hotter than most places in Missouri.

In Moscow, there are 16.5 days annually when the high temperature is over 90°, which is about average compared to other places in Idaho.

In St. Louis, there are 91.1 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Missouri.

In Moscow, there are 122.2 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Idaho.

In St. Louis, there are 1.5 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Missouri.

In Moscow, there are 2.1 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Idaho.

May is the wettest month in St. Louis with 4.8 inches of rain, and the driest month is February with 2.3 inches. The wettest season is Summer with 29% of yearly precipitation and 18% occurs in Spring, which is the driest season. The annual rainfall of 42.2 inches in St. Louis means that it is drier than most places in Missouri.


November is the wettest month in Moscow with 2.9 inches of rain, and the driest month is July with 0.8 inches. The wettest season is Spring with 31% of yearly precipitation and 14% occurs in Autumn, which is the driest season. The annual rainfall of 21.6 inches in Moscow means that it is wetter than most places in Idaho.

May is the rainiest month in St. Louis with 11.3 days of rain, and September is the driest month with only 7.0 rainy days. There are 105.3 rainy days annually in St. Louis, which is rainier than most places in Missouri. The rainiest season is Summer when it rains 30% of the time and the driest is Spring with only a 23% chance of a rainy day.

November is the rainiest month in Moscow with 14.8 days of rain, and August is the driest month with only 3.8 rainy days. There are 116.0 rainy days annually in Moscow, which is rainier than most places in Idaho. The rainiest season is Spring when it rains 32% of the time and the driest is Autumn with only a 15% chance of a rainy day.

An annual snowfall of 15.5 inches in St. Louis means that it is snowier than most places in Missouri.

An annual snowfall of 42.8 inches in Moscow means that it is about average compared to other places in Idaho.

January is the snowiest month in St. Louis with 4.9 inches of snow, and 5 months of the year have significant snowfall.

January is the snowiest month in Moscow with 14.6 inches of snow, and 6 months of the year have significant snowfall.