2025 Compare Climate & Weather:
Lancaster, PA vs Castle Rock, CO

Change Cities

Highlights

On average, there are 243 sunny days per year in Castle Rock. Lancaster averages 202 sunny days per year. The US average is 205 sunny days.

Castle Rock, Colorado gets 18.6 inches of rain, on average, per year. Lancaster, Pennsylvania gets 42.6 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Castle Rock averages 78.3 inches of snow per year. Lancaster averages 20 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

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

Lancaster, Pennsylvania
Summer High: the July high is around 85.4 degrees
Winter Low: the January low is 21.3
Rain: averages 42.6 inches of rain a year
Snow: averages 20 inches of snow a year

BestPlaces Comfort Index

Castle Rock

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

7.2 / 10

August, September and July are the most pleasant months in Castle Rock, while December and January are the least comfortable months.

Lancaster

The annual BestPlaces Comfort Index for Lancaster is 7.2 (10=best), which means it is one of the most pleasant places in Pennsylvania.

7.2 / 10

June, September and August are the most pleasant months in Lancaster, while January and February are the least comfortable months.

Average Monthly High / Low (°F)

Month	Lancaster, PA	Castle Rock, CO
January	38° / 21°	45° / 19°
February	41° / 23°	46° / 20°
March	51° / 31°	53° / 26°
April	63° / 40°	60° / 32°
May	73° / 50°	69° / 41°
June	82° / 60°	79° / 50°
July	85° / 64°	86° / 56°
August	84° / 62°	83° / 55°
September	76° / 54°	76° / 47°
October	65° / 43°	65° / 36°
November	54° / 34°	52° / 26°
December	42° / 26°	44° / 18°

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

Month	Hot Days	Freezing Days	Rainy Days	Snowy Days
January	0 / 0	27 / 29	10 / 3	3 / 4
February	0 / 0	24 / 25	9 / 4	3 / 4
March	0 / 0	18 / 23	10 / 6	1 / 5
April	0 / 0	5 / 15	11 / 6	0 / 4
May	1 / 0	0 / 3	12 / 9	0 / 1
June	3 / 2	0 / 0	11 / 8	0 / 0
July	6 / 8	0 / 0	11 / 8	0 / 0
August	4 / 4	0 / 0	9 / 10	0 / 0
September	1 / 1	0 / 1	9 / 6	0 / 0
October	0 / 0	3 / 10	9 / 4	0 / 1
November	0 / 0	13 / 22	10 / 4	0 / 4
December	0 / 0	24 / 28	10 / 4	2 / 4

July is the hottest month for Lancaster with an average high temperature of 85.4°, which ranks it as warmer than most places in Pennsylvania. In Lancaster, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Lancaster are September, June and May.

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.

January has the coldest nighttime temperatures for Lancaster with an average of 21.3°. This is warmer than most places in Pennsylvania.

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

In Lancaster, there are 14.3 days annually when the high temperature is over 90°, which is hotter than most places in Pennsylvania.

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 Lancaster, there are 113.4 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Pennsylvania.

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 Lancaster, there are 1.0 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Pennsylvania.

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.

July is the wettest month in Lancaster with 4.5 inches of rain, and the driest month is February with 2.4 inches. The wettest season is Autumn with 28% of yearly precipitation and 20% occurs in Spring, which is the driest season. The annual rainfall of 42.6 inches in Lancaster means that it is about average compared to other places in Pennsylvania.

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 rainiest month in Lancaster with 12.3 days of rain, and February is the driest month with only 8.8 rainy days. There are 122.3 rainy days annually in Lancaster, which is less rainy than most places in Pennsylvania. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 23% chance of a rainy day.

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.

An annual snowfall of 20.0 inches in Lancaster means that it is less snowy than most places in Pennsylvania.

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

February is the snowiest month in Lancaster with 7.7 inches of snow, and 4 months of the year have significant snowfall.

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

DID YOU KNOW?

Many people confuse Weather and Climate, but they are different. Weather refers to the conditions of the atmosphere over a short period of time, while Climate refers to the conditions of the atmosphere over a long period of time.

Weather, more specifically, refers to how the atmosphere behaves and its effects on life and human activities. Most people think of Weather in terms of what can be observed: temperature, humidity, precipitation, and cloudy/sunny conditions. Weather conditions constantly change on a minute-to-minute basis.

Climate is a record of the average weather conditions for a given place over a long period of time, often referred to as Climate Normals. A 30-year period of record is a common requirement to be considered a Climate Normal.

Reviews for Lancaster 2 Reviews

Jill · Sherman Oaks, CA

re:

Over 16 years ago

Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't More

| Reply

NC For Me · Apex, NC

re:

Over 16 years ago

Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but More

| Reply

Start Your Review of Lancaster

See all reviews

Reviews for Castle Rock 2 Reviews

Jill · Sherman Oaks, CA

re:

Over 16 years ago

Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't More

| Reply

NC For Me · Apex, NC

re:

Over 16 years ago

Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but More

| Reply

Start Your Review of Castle Rock

See all reviews

Compare Cost of Living

Compare Lancaster Cost of Living vs Castle Rock Cost of Living: Taxes, Childcare, Groceries, Health...

Compare now

Premium Subscription

Includes Cost of Living compares for child care, utilities, transportation, health, taxes, housing for home owners vs renters, weather, insurance premiums and so much more.

Upgrade now

Compare City	Compared To This City
Cincinnati, Ohio	Long Beach, New York	Compare
Miami, Florida	Jacksonville, Florida	Compare
Cincinnati, Ohio	Long Beach, New York	Compare
Cincinnati, Ohio	Long Beach, New York	Compare
Cincinnati, Ohio	Long Beach, New York	Compare
Daytona Beach, Florida	Key West, Florida	Compare
San Diego, California	San Clemente, California	Compare
Jersey City, New Jersey	Raleigh, North Carolina	Compare
Jersey City, New Jersey	Raleigh, North Carolina	Compare
Lake Havasu City, Arizona	Tucson, Arizona	Compare

2025 Compare Climate & Weather:
Lancaster, PA vs Castle Rock, CO

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

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

January has the coldest nighttime temperatures for Lancaster with an average of 21.3°. This is warmer than most places in Pennsylvania.

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

In Lancaster, there are 14.3 days annually when the high temperature is over 90°, which is hotter than most places in Pennsylvania.

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 Lancaster, there are 113.4 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Pennsylvania.

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 Lancaster, there are 1.0 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Pennsylvania.

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.

An annual snowfall of 20.0 inches in Lancaster means that it is less snowy than most places in Pennsylvania.

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

February is the snowiest month in Lancaster with 7.7 inches of snow, and 4 months of the year have significant snowfall.

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

DID YOU KNOW?

Reviews for Lancaster 2 Reviews

Reviews for Castle Rock 2 Reviews

Most Recent Searches On Compare Climate & Weather

Compare Cost of Living

Zips In Lancaster, Pennsylvania

Zips In CASTLE ROCK, COLORADO

Learn More About LANCASTER, PENNSYLVANIA

Learn More About Castle Rock, Colorado

Premium Subscription

BestPlaces Tools

About BestPlaces

Follow Us

2025 Compare Climate & Weather:Lancaster, PA vs Castle Rock, CO

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

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

January has the coldest nighttime temperatures for Lancaster with an average of 21.3°. This is warmer than most places in Pennsylvania.December has the coldest nighttime temperatures for Castle Rock with an average of 18.1°. This is one of the warmest places in Colorado.

In Lancaster, there are 14.3 days annually when the high temperature is over 90°, which is hotter than most places in Pennsylvania.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 Lancaster, there are 113.4 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Pennsylvania.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 Lancaster, there are 1.0 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Pennsylvania.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.

An annual snowfall of 20.0 inches in Lancaster means that it is less snowy than most places in Pennsylvania.An annual snowfall of 78.3 inches in Castle Rock means that it is snowier than most places in Colorado.

February is the snowiest month in Lancaster with 7.7 inches of snow, and 4 months of the year have significant snowfall.March is the snowiest month in Castle Rock with 16.8 inches of snow, and 9 months of the year have significant snowfall.

DID YOU KNOW?

Reviews for Lancaster 2 Reviews

Reviews for Castle Rock 2 Reviews

Most Recent Searches On Compare Climate & Weather

Compare Cost of Living

Zips In Lancaster, Pennsylvania

Zips In CASTLE ROCK, COLORADO

Learn More About LANCASTER, PENNSYLVANIA

Learn More About Castle Rock, Colorado

Premium Subscription

BestPlaces Tools

About BestPlaces

Follow Us

2025 Compare Climate & Weather:
Lancaster, PA vs Castle Rock, CO

January has the coldest nighttime temperatures for Lancaster with an average of 21.3°. This is warmer than most places in Pennsylvania.

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

In Lancaster, there are 14.3 days annually when the high temperature is over 90°, which is hotter than most places in Pennsylvania.

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 Lancaster, there are 1.0 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Pennsylvania.

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.

An annual snowfall of 20.0 inches in Lancaster means that it is less snowy than most places in Pennsylvania.

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

February is the snowiest month in Lancaster with 7.7 inches of snow, and 4 months of the year have significant snowfall.

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