Castle Rock, CO Weather

Castle Rock weather forecast

  • Temperature:39°F
  • Humidity:93%
  • Pressure:30.10inHg
  • Wind speed:7mph
  • Direction:
  • Gusts:n/a

Update from Denver/Centennial, CO on 2 Oct 2:53 AM PDT

Forecasted weather

Today

Patchy Fog

57°F

Tonight

Partly Cloudy

29°F

Friday

Mostly Sunny

57°F

Friday Night

Mostly Clear

37°F

Saturday

Sunny

69°F

Saturday Night

Mostly Clear

41°F

Sunday

Sunny

67°F

Sunday Night

Mostly Clear

40°F

Monday

Sunny

70°F

Monday Night

Mostly Clear

42°F

Tuesday

Sunny

75°F

Tuesday Night

Mostly Clear

44°F

Wednesday

Sunny

72°F

Castle Rock average temperature

MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
January-8°F70°F31°F0.7"
February-11°F75°F34°F0.4"
March6°F76°F41°F0.9"
April13°F82°F46°F2.1"
May25°F90°F57°F1.7"
June36°F98°F67°F1.6"
July49°F101°F73°F2.2"
August46°F99°F70°F2.9"
September31°F90°F61°F1.1"
October18°F85°F49°F2.0"
November-3°F77°F42°F0.3"
December-13°F69°F29°F1.1"
In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.

The highest average temperature in Castle Rock is July at 73.4 degrees. The coldest average temperature in Castle Rock is December at 28.9 degrees. The most monthly precipitation in Castle Rock occurs in August with 2.9 inches. The Castle Rock weather information is based on the average of the previous 3-7 years of data.

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Castle Rock air quality index & pollution index

IndexCastle RockColoradoNational
Air quality index453437
Pollution index2,104,0802,028,9166,623,939
In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
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The Castle Rock, CO air quality index is a median value which considers the most hazardous air pollutants. The Castle Rock, CO air quality index is 32.2% greater than the Colorado average and 21.6% greater than the national average.

The Castle Rock, CO pollution index is the sum of the most hazardous air pollutants displayed in pounds. The Castle Rock, CO pollution index is 3.7% greater than the Colorado average and 68.2% less than the national average.

Air quality information

MeasurementTotal
Days measured296
Days with good air quality195
Days with moderate air quality95
Days w/ poor A.Q. for sensitive groups6
Days with unhealthy air quality0

Air pollution information

PollutantTotal
Arsenic0.020%
Benzene0.030%
Carbon Tetrachloride0.004%
Lead0.004%
Mercury0.001%

Average monthly Castle Rock temperature with heat index

Castle Rock monthly precipitation with daily maximum

Castle Rock monthly snow depth with daily maximum

Castle Rock monthly wind speed information

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Cities near Castle Rock, CO

CityMilesCityMiles
Castle Rock, CO0Lone Tree, CO11.8
Castle Pines, CO6.1Acres Green, CO12.4
The Pinery, CO7.3Highlands Ranch, CO12.9
Parker, CO10.6Roxborough Park, CO13.3
Stonegate, CO10.7Elizabeth, CO13.5
Carriage Club, CO10.8Castlewood, CO14.5
Ponderosa Park, CO11.4Southglenn, CO15.6
Perry Park, CO11.6Greenwood Village, CO16.6
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