Colorado · NWS BOU office

Castle Rock, CO weather

It is 44°F and partly cloudy at Denver - Centennial Airport as of Oct 28, 2:53 AM MDT. Overnight: Mostly Clear, low near 40°F. Forecast from the National Weather Service, issued Oct 28, 12:46 AM MDT.

Updated Oct 28, 3:17 AM MDT (snapshot)

Current conditions

Temperature

44°F

Partly Cloudy

Wind

Calm

Humidity 73% · dew point 36°F

Pressure · visibility

29.96 inHg

Visibility 10 mi

Observed at Denver - Centennial Airport (KAPA), Oct 28, 2:53 AM MDT. Station readings can lag or be missing.

Alerts for this area

No active NWS alerts cover the Castle Rock forecast zone right now.

Around the NWS BOU forecast area

No active alerts in zones served by the BOU office near Castle Rock.

From the alert snapshot of Oct 28, 2026, 5:12 AM EDT. Colorado has 3 active alerts: see them all.

For official warnings, check weather.gov and your local authorities. OpenForecast repeats National Weather Service alerts and may be delayed or incomplete. Follow instructions from emergency officials.

Next 24 hours

Hourly forecast for Castle Rock (local time)
TimeTempForecastPrecip. chanceWind
Wed 3 AM41°FMostly Clear0%SSW 7 mph
Wed 4 AM40°FMostly Clear0%SSW 7 mph
Wed 5 AM40°FPartly Cloudy0%SSW 8 mph
Wed 6 AM40°FMostly Sunny0%S 8 mph
Wed 7 AM40°FPartly Sunny0%S 8 mph
Wed 8 AM40°FMostly Cloudy0%S 9 mph
Wed 9 AM44°FMostly Cloudy0%SSW 10 mph
Wed 10 AM53°FMostly Cloudy0%SSW 9 mph
Wed 11 AM58°FMostly Cloudy0%WSW 8 mph
Wed 12 PM62°FPartly Sunny0%W 7 mph
Wed 1 PM64°FMostly Sunny0%W 5 mph
Wed 2 PM66°FMostly Sunny0%SW 5 mph
Wed 3 PM67°FMostly Sunny0%E 6 mph
Wed 4 PM65°FMostly Sunny0%SW 7 mph
Wed 5 PM62°FMostly Sunny0%SSW 7 mph
Wed 6 PM57°FPartly Cloudy0%S 6 mph
Wed 7 PM52°FMostly Cloudy0%SSW 6 mph
Wed 8 PM50°FMostly Cloudy0%SW 6 mph
Wed 9 PM48°FMostly Cloudy0%SSW 6 mph
Wed 10 PM46°FMostly Cloudy0%SSW 6 mph
Wed 11 PM44°FMostly Cloudy0%SSW 6 mph
Thu 12 AM42°FPartly Cloudy0%S 7 mph
Thu 1 AM41°FMostly Clear0%S 7 mph
Thu 2 AM41°FMostly Clear0%S 6 mph

Hourly values come from the NWS gridded forecast for the 2.5 km grid square that covers the city's center point. Conditions elsewhere in Castle Rock can differ.

7-day forecast

Overnight

Low 40°F

Mostly clear, with a low around 40. South southwest wind around 8 mph.

Wednesday

High 67°F·Low 37°F

Partly sunny. High near 67, with temperatures falling to around 62 in the afternoon. South southwest wind 5 to 10 mph, with gusts as high as 16 mph.

Wednesday Night: Partly cloudy. Low around 37, with temperatures rising to around 39 overnight. South southwest wind 2 to 7 mph.

Thursday

High 66°F·Low 40°F

Sunny, with a high near 66. East southeast wind 1 to 5 mph.

Thursday Night: Partly cloudy, with a low around 40. South southwest wind around 5 mph.

Friday

High 64°F·Low 42°F

Partly sunny, with a high near 64.

Friday Night: Mostly cloudy, with a low around 42.

Saturday

High 62°F·Low 42°F

Mostly sunny, with a high near 62.

Saturday Night: Partly cloudy, with a low around 42.

Sunday

High 59°F·Low 41°F

A chance of rain showers after 5pm. Mostly cloudy, with a high near 59.

Sunday Night: Rain showers likely before 5am, then rain and snow showers likely. Mostly cloudy, with a low around 41.

Monday

High 48°F·Low 36°F

Rain and snow showers likely. Mostly cloudy, with a high near 48.

Monday Night: Rain and snow showers likely. Mostly cloudy, with a low around 36. New snow accumulation of less than half an inch possible.

Tuesday

High 48°F

A chance of snow showers before 8am, then a chance of rain and snow showers. Mostly sunny, with a high near 48.

Nearby cities

Larger cities in the area

Other cities in Douglas County

See every city we cover in Colorado, or check all active alerts.

About this forecast

Forecast office
Castle Rock is served by the National Weather Service BOU forecast office, forecast zone COZ041, county zone COC035.
Location used
The Census Bureau's internal point for Castle Rock (39.3762, -104.8529), in Douglas County. Population: 83,213 (2024 estimate), number 14 of the 33 Colorado cities on this site.
Radar
Nearest NWS radar: KFTG. View it on radar.weather.gov.

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Sources

  • Forecast, hourly forecast, observations and alerts: National Weather Service API, api.weather.gov/points/39.3762,-104.8529 (forecast issued Oct 28, 12:46 AM MDT).
  • Official forecast page: forecast.weather.gov.
  • City location and population: U.S. Census Bureau, Vintage 2024 population estimates and 2024 Gazetteer files.
  • Snapshot taken Oct 28, 2026. The NWS and Census Bureau do not endorse OpenForecast.

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