Home / Select Cities / 2020 Comparing Castle Rock, CO vs. Hilton Head Island, SC

2020 Compare Climate & Weather:
Castle Rock, CO vs Hilton Head Island, SC

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Highlights

On average, there are 215 sunny days per year in Hilton Head Island. Castle Rock averages 243 sunny days per year. The US average is 205 sunny days.

Hilton Head Island, South Carolina gets 48.1 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.

Hilton Head Island averages 0.1 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

Hilton Head Island, South Carolina
Summer High:
the July high is around 90.8 degrees
Winter Low: the January low is 39.2
Rain: averages 48.1 inches of rain a year
Snow: averages 0.1 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
Hilton Head Island

The annual BestPlaces Comfort Index for Hilton Head Island is 7.1 (10=best), which means it is one of the least comfortable places in South Carolina.

7.1 / 10
October, April and May are the most pleasant months in Hilton Head Island, while July and August are the least comfortable months.

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.


Today's Weather - Castle Rock, CO

1 PM PST

Partly Sunny

55°F

DAYDESCRIPTIONHIGH / LOWWIND
This AfternoonPartly Sunny55° / 37°NE 10 mph
FridayMostly Sunny then Slight Chance Rain Showers66° / 37°WSW 3 to 7 mph
SaturdayMostly Sunny then Slight Chance Rain Showers63° / 27°W 3 mph
SundaySnow Showers33° / 16°NNE 10 mph
MondaySnow Showers Likely34° / 17°SE 3 to 7 mph
TuesdayChance Snow Showers41° / 20°NW 3 mph
WednesdayPartly Sunny then Chance Snow Showers45° / 25°NW 5 mph

Today's Weather - Hilton Head Island, SC

1 PM PST

Sunny

84°F

DAYDESCRIPTIONHIGH / LOWWIND
This AfternoonSunny84° / 59°W 17 mph
FridaySlight Chance Rain Showers then Partly Sunny68° / 50°NW 12 to 15 mph
SaturdaySunny68° / 62°E 8 mph
SundayShowers And Thunderstorms74° / 68°SE 10 to 21 mph
MondayShowers And Thunderstorms then Chance Showers And Thunderstorms78° / 64°SW 12 to 22 mph
TuesdayChance Rain Showers73° / 60°W 6 to 10 mph
WednesdayChance Rain Showers72° / 56°N 10 to 14 mph

Average Monthly High / Low (°F)
MonthCastle Rock, COHilton Head Island, SC
January45° / 19°60° / 39°
February46° / 20°63° / 42°
March53° / 26°69° / 48°
April60° / 32°76° / 55°
May69° / 41°83° / 64°
June79° / 50°88° / 71°
July86° / 56°91° / 74°
August83° / 55°90° / 74°
September76° / 47°85° / 69°
October65° / 36°77° / 59°
November52° / 26°70° / 50°
December44° / 18°62° / 42°

Hot, Freezing, Rainy, Snowy Days: Castle Rock / Hilton Head Island
MonthHot DaysFreezing DaysRainy DaysSnowy Days
January0 / 029 / 73 / 104 / 0
February0 / 025 / 44 / 84 / 0
March0 / 023 / 16 / 85 / 0
April0 / 015 / 06 / 74 / 0
May0 / 33 / 09 / 61 / 0
June2 / 110 / 08 / 110 / 0
July8 / 180 / 08 / 110 / 0
August4 / 150 / 010 / 120 / 0
September1 / 51 / 06 / 90 / 0
October0 / 010 / 04 / 71 / 0
November0 / 022 / 14 / 74 / 0
December0 / 028 / 54 / 84 / 0
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 Hilton Head Island with an average high temperature of 90.8°, which ranks it as cooler than most places in South Carolina. In Hilton Head Island, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Hilton Head Island are October, April and May.


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 Hilton Head Island with an average of 39.2°. This is one of the warmest places in South Carolina.



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 Hilton Head Island, there are 51.5 days annually when the high temperature is over 90°, which is about average compared to other places in South Carolina.



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 Hilton Head Island, there are 17.5 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in South Carolina.



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 Hilton Head Island, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in South Carolina.



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 Hilton Head Island with 7.1 inches of rain, and the driest month is May with 2.2 inches. The wettest season is Autumn with 37% of yearly precipitation and 18% occurs in Summer, which is the driest season. The annual rainfall of 48.1 inches in Hilton Head Island means that it is wetter than most places in South Carolina.


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 Hilton Head Island with 12.3 days of rain, and May is the driest month with only 6.4 rainy days. There are 103.4 rainy days annually in Hilton Head Island, which is about average compared to other places in South Carolina. The rainiest season is Autumn when it rains 32% of the time and the driest is Summer with only a 20% 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 0.1 inches in Hilton Head Island means that it is one of the least snowy places in South Carolina.



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

December is the snowiest month in Hilton Head Island with 0.1 inches of snow, and no 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 Castle Rock    2 Reviews
re: - 11/28/2009
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... Read More

Start Your Review of Castle Rock


re: - 4/2/2009
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... Read More

Reviews for Hilton Head Island    2 Reviews
re: - 11/28/2009
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... Read More

Start Your Review of Hilton Head Island


re: - 4/2/2009
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... Read More

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ZIPS IN CASTLE ROCK, COLORADO
80104, 80109
ZIPS IN HILTON HEAD ISLAND, SOUTH CAROLINA
29926, 29928

LEARN MORE ABOUT CASTLE ROCK, COLORADO
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LEARN MORE ABOUT HILTON HEAD ISLAND, SOUTH CAROLINA
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