2025 Compare Climate & Weather:
Castle Rock, CO vs Manchester, TN

Highlights

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

Manchester, Tennessee gets 57.4 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.

Manchester averages 3.6 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

Manchester, Tennessee
Summer High: the July high is around 86.4 degrees
Winter Low: the January low is 26.7
Rain: averages 57.4 inches of rain a year
Snow: averages 3.6 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 Manchester is 7.4 (10=best), which means it is more comfortable than most places in Tennessee.

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

52°F

Today's Weather - Manchester, TN

59°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Castle Rock / Manchester

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 Manchester with an average high temperature of 86.4°, which ranks it as cooler than most places in Tennessee. In Manchester, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Manchester are May, September and June.

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 Manchester with an average of 26.7°. This is about average compared to other places in Tennessee.

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 Manchester, there are 18.5 days annually when the high temperature is over 90°, which is cooler than most places in Tennessee.

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 Manchester, there are 85.1 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Tennessee.

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 Manchester, there are 0.2 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Tennessee.

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.


December is the wettest month in Manchester with 5.8 inches of rain, and the driest month is October with 3.4 inches. The wettest season is Spring with 27% of yearly precipitation and 22% occurs in Winter, which is the driest season. The annual rainfall of 57.4 inches in Manchester means that it is one of the wettest places in Tennessee.

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.

December is the rainiest month in Manchester with 12.3 days of rain, and September is the driest month with only 8.3 rainy days. There are 128.9 rainy days annually in Manchester, which is rainier than most places in Tennessee. The rainiest season is Spring when it rains 28% of the time and the driest is Winter with only a 21% 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 3.6 inches in Manchester means that it is about average compared to other places in Tennessee.

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

January is the snowiest month in Manchester with 1.2 inches of snow, and 4 months of the year have significant snowfall.