National Weather Service Forecast for: Castle Rock CO
Issued by: National Weather Service Denver-Boulder, CO
Updated: 12:47 pm MDT Apr 6, 2026
 
This
Afternoon
This Afternoon: Increasing clouds, with a high near 72. East northeast wind 5 to 10 mph, with gusts as high as 18 mph.
Increasing
Clouds
Tonight

Tonight: Mostly cloudy, with a low around 36. East wind 5 to 10 mph becoming light and variable  after midnight. Winds could gust as high as 21 mph.
Mostly Cloudy

Tuesday

Tuesday: A 50 percent chance of showers after noon.  Mostly cloudy, with a high near 68. Calm wind becoming south southeast 5 to 9 mph in the afternoon. Winds could gust as high as 16 mph.
Mostly Cloudy
then Chance
Showers
Tuesday
Night
Tuesday Night: A 40 percent chance of showers before midnight.  Partly cloudy, with a low around 41. Southwest wind 6 to 8 mph, with gusts as high as 16 mph.
Chance
Showers then
Partly Cloudy
Wednesday

Wednesday: A 30 percent chance of showers after noon.  Mostly sunny, with a high near 71. Light and variable wind becoming north 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.
Mostly Sunny
then Chance
Showers
Wednesday
Night
Wednesday Night: A 20 percent chance of showers before midnight.  Partly cloudy, with a low around 40.
Slight Chance
Showers then
Partly Cloudy
Thursday

Thursday: A 50 percent chance of showers after noon.  Partly sunny, with a high near 72.
Mostly Sunny
then Chance
Showers
Thursday
Night
Thursday Night: Showers likely, mainly before midnight.  Mostly cloudy, with a low around 43.
Showers
Likely
Friday

Friday: A slight chance of showers, then a chance of showers and thunderstorms after noon.  Partly sunny, with a high near 69.
Chance
Showers
Hi 72 °F Lo 36 °F Hi 68 °F Lo 41 °F Hi 71 °F Lo 40 °F Hi 72 °F Lo 43 °F Hi 69 °F

Hazardous Weather Outlook
 

This Afternoon
 
Increasing clouds, with a high near 72. East northeast wind 5 to 10 mph, with gusts as high as 18 mph.
Tonight
 
Mostly cloudy, with a low around 36. East wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 21 mph.
Tuesday
 
A 50 percent chance of showers after noon. Mostly cloudy, with a high near 68. Calm wind becoming south southeast 5 to 9 mph in the afternoon. Winds could gust as high as 16 mph.
Tuesday Night
 
A 40 percent chance of showers before midnight. Partly cloudy, with a low around 41. Southwest wind 6 to 8 mph, with gusts as high as 16 mph.
Wednesday
 
A 30 percent chance of showers after noon. Mostly sunny, with a high near 71. Light and variable wind becoming north 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
 
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 40.
Thursday
 
A 50 percent chance of showers after noon. Partly sunny, with a high near 72.
Thursday Night
 
Showers likely, mainly before midnight. Mostly cloudy, with a low around 43.
Friday
 
A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 69.
Friday Night
 
A chance of showers. Mostly cloudy, with a low around 44.
Saturday
 
Showers likely. Mostly cloudy, with a high near 72.
Saturday Night
 
A chance of showers. Mostly cloudy, with a low around 43.
Sunday
 
A chance of showers. Partly sunny, with a high near 70.

 

Forecast from NOAA-NWS for Castle Rock CO.