2025 Compare Climate & Weather:
Palmer Lake, CO vs Castle Rock, WA

Highlights

On average, there are 139 sunny days per year in Castle Rock. Palmer Lake averages 245 sunny days per year. The US average is 205 sunny days.

Castle Rock, Washington gets 60.8 inches of rain, on average, per year. Palmer Lake, Colorado gets 20.6 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Castle Rock averages 3.1 inches of snow per year. Palmer Lake averages 95.4 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Castle Rock, Washington
Summer High: the July high is around 77.1 degrees
Winter Low: the January low is 33.8
Rain: averages 60.8 inches of rain a year
Snow: averages 3.1 inches of snow a year

Palmer Lake, Colorado
Summer High: the July high is around 82.8 degrees
Winter Low: the January low is 15.4
Rain: averages 20.6 inches of rain a year
Snow: averages 95.4 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Castle Rock is 7.1 (10=best), which means it is about average compared to other places in Washington.

The annual BestPlaces Comfort Index for Palmer Lake is 6.7 (10=best), which means it is less comfortable than most places in Colorado.

Today's Weather - Palmer Lake, CO

41°F

Today's Weather - Castle Rock, WA

42°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Palmer Lake / Castle Rock

July is the hottest month for Palmer Lake with an average high temperature of 82.8°, which ranks it as cooler than most places in Colorado. In Palmer Lake, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Palmer Lake are June, August and July.

August is the hottest month for Castle Rock with an average high temperature of 78.3°, which ranks it as about average compared to other places in Washington. In Castle Rock, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Castle Rock are August, July and September.

December has the coldest nighttime temperatures for Palmer Lake with an average of 15.2°. This is about average compared to other places in Colorado.

December has the coldest nighttime temperatures for Castle Rock with an average of 33.0°. This is about average compared to other places in Washington.

In Palmer Lake, there are 7.3 days annually when the high temperature is over 90°, which is cooler than most places in Colorado.

In Castle Rock, there are 6.0 days annually when the high temperature is over 90°, which is about average compared to other places in Washington.

In Palmer Lake, there are 177.0 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Colorado.

In Castle Rock, there are 57.8 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Washington.

In Palmer Lake, there are 8.3 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Colorado.

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

August is the wettest month in Palmer Lake with 3.3 inches of rain, and the driest month is February with 0.5 inches. The wettest season is Autumn with 41% of yearly precipitation and 9% occurs in Spring, which is the driest season. The annual rainfall of 20.6 inches in Palmer Lake means that it is one of the wettest places in Colorado.


November is the wettest month in Castle Rock with 9.9 inches of rain, and the driest month is July with 1.0 inches. The wettest season is Spring with 38% of yearly precipitation and 8% occurs in Autumn, which is the driest season. The annual rainfall of 60.8 inches in Castle Rock means that it is wetter than most places in Washington.

August is the rainiest month in Palmer Lake with 13.3 days of rain, and October is the driest month with only 4.9 rainy days. There are 95.4 rainy days annually in Palmer Lake, which is rainier 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 17% chance of a rainy day.

November is the rainiest month in Castle Rock with 21.3 days of rain, and August is the driest month with only 6.0 rainy days. There are 181.2 rainy days annually in Castle Rock, which is rainier than most places in Washington. The rainiest season is Spring when it rains 32% of the time and the driest is Autumn with only a 13% chance of a rainy day.

An annual snowfall of 95.4 inches in Palmer Lake means that it is snowier than most places in Colorado.

An annual snowfall of 3.1 inches in Castle Rock means that it is less snowy than most places in Washington.

March is the snowiest month in Palmer Lake with 19.6 inches of snow, and 9 months of the year have significant snowfall.

December is the snowiest month in Castle Rock with 1.2 inches of snow, and 3 months of the year have significant snowfall.