2025 Compare Climate & Weather:
Castle Rock, CO vs Cape Girardeau, MO

Highlights

On average, there are 213 sunny days per year in Cape Girardeau. Castle Rock averages 243 sunny days per year. The US average is 205 sunny days.

Cape Girardeau, Missouri gets 48.3 inches of rain, on average, per year. Castle Rock, Colorado gets 18.6 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Cape Girardeau averages 10.3 inches of snow per year. Castle Rock averages 78.3 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Cape Girardeau, Missouri
Summer High: the July high is around 89.5 degrees
Winter Low: the January low is 24
Rain: averages 48.3 inches of rain a year
Snow: averages 10.3 inches of snow a year

Castle Rock, Colorado
Summer High: the July high is around 85.5 degrees
Winter Low: the January low is 18.6
Rain: averages 18.6 inches of rain a year
Snow: averages 78.3 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Cape Girardeau is 7.1 (10=best), which means it is less comfortable than most places in Missouri.

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

Today's Weather - Castle Rock, CO

53°F

Today's Weather - Cape Girardeau, MO

71°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Castle Rock / Cape Girardeau

July is the hottest month for Castle Rock with an average high temperature of 85.5°, which ranks it as about average compared to other places in Colorado. In Castle Rock, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Castle Rock are June, September and August.

July is the hottest month for Cape Girardeau with an average high temperature of 89.5°, which ranks it as warmer than most places in Missouri. In Cape Girardeau, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Cape Girardeau are May, September and October.

December has the coldest nighttime temperatures for Castle Rock with an average of 18.1°. This is one of the warmest places in Colorado.

January has the coldest nighttime temperatures for Cape Girardeau with an average of 24.0°. This is one of the warmest places in Missouri.

In Castle Rock, there are 14.9 days annually when the high temperature is over 90°, which is cooler than most places in Colorado.

In Cape Girardeau, there are 41.7 days annually when the high temperature is over 90°, which is hotter than most places in Missouri.

In Castle Rock, there are 156.4 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Colorado.

In Cape Girardeau, there are 91.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Missouri.

In Castle Rock, there are 5.6 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Colorado.

In Cape Girardeau, there are 1.7 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Missouri.

August is the wettest month in Castle Rock with 2.6 inches of rain, and the driest month is January with 0.6 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 18.6 inches in Castle Rock means that it is wetter than most places in Colorado.


May is the wettest month in Cape Girardeau with 5.2 inches of rain, and the driest month is August with 3.0 inches. The wettest season is Summer with 30% of yearly precipitation and 22% occurs in Autumn, which is the driest season. The annual rainfall of 48.3 inches in Cape Girardeau means that it is one of the wettest places in Missouri.

August is the rainiest month in Castle Rock with 9.9 days of rain, and January is the driest month with only 3.3 rainy days. There are 70.0 rainy days annually in Castle Rock, which is less rainy than most places in Colorado. The rainiest season is Autumn when it rains 37% of the time and the driest is Spring with only a 15% chance of a rainy day.

May is the rainiest month in Cape Girardeau with 11.4 days of rain, and August is the driest month with only 6.7 rainy days. There are 110.7 rainy days annually in Cape Girardeau, which is one of the rainiest places in Missouri. The rainiest season is Summer when it rains 30% of the time and the driest is Autumn with only a 22% chance of a rainy day.

An annual snowfall of 78.3 inches in Castle Rock means that it is snowier than most places in Colorado.

An annual snowfall of 10.3 inches in Cape Girardeau means that it is less snowy than most places in Missouri.

March is the snowiest month in Castle Rock with 16.8 inches of snow, and 9 months of the year have significant snowfall.

February is the snowiest month in Cape Girardeau with 3.8 inches of snow, and 4 months of the year have significant snowfall.