2025 Compare Climate & Weather:
Castle Rock, CO vs Scottsdale, AZ

Highlights

On average, there are 299 sunny days per year in Scottsdale. Castle Rock averages 243 sunny days per year. The US average is 205 sunny days.

Scottsdale, Arizona gets 10.5 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.

Scottsdale averages 0 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

Scottsdale, Arizona
Summer High: the July high is around 104.3 degrees
Winter Low: the January low is 42.4
Rain: averages 10.5 inches of rain a year
Snow: averages 0 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 Scottsdale is 7.3 (10=best), which means it is less comfortable than most places in Arizona.

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

51°F

Today's Weather - Scottsdale, AZ

61°F

Average Monthly High / Low (°F)

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

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 Scottsdale with an average high temperature of 104.3°, which ranks it as warmer than most places in Arizona. In Scottsdale, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Scottsdale are March, November and April.

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

December has the coldest nighttime temperatures for Scottsdale with an average of 41.6°. This is warmer than most places in Arizona.

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 Scottsdale, there are 160.2 days annually when the high temperature is over 90°, which is hotter than most places in Arizona.

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 Scottsdale, there are 4.5 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Arizona.

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

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.


August is the wettest month in Scottsdale with 1.3 inches of rain, and the driest month is June with 0.1 inches. The wettest season is Spring with 36% of yearly precipitation and 18% occurs in Summer, which is the driest season. The annual rainfall of 10.5 inches in Scottsdale means that it is about average compared to other places in Arizona.

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.

August is the rainiest month in Scottsdale with 5.1 days of rain, and June is the driest month with only 0.5 rainy days. There are 37.7 rainy days annually in Scottsdale, 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 19% 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.

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

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

Any measurable snowfall is a rare occurance in Scottsdale.