National Weather Service Forecast for: Castle Rock CO
Issued by: National Weather Service Denver-Boulder, CO
Updated: 12:46 am MDT May 29, 2026
 
Today

Today: A 30 percent chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 81. South southwest wind 6 to 11 mph, with gusts as high as 18 mph.
Partly Sunny
then Chance
T-storms
 Tonight

Tonight: Partly cloudy, with a low around 49. Southwest wind 5 to 11 mph, with gusts as high as 18 mph.
Partly Cloudy

 Saturday

Saturday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 76. Southwest wind 5 to 7 mph becoming north in the afternoon. Winds could gust as high as 16 mph.
Sunny then
Slight Chance
T-storms
 Saturday
Night
Saturday Night: Mostly clear, with a low around 46. Northwest wind around 6 mph becoming calm. Winds could gust as high as 15 mph.
Mostly Clear

 Sunday

Sunday: Sunny, with a high near 80. Southwest wind 6 to 8 mph, with gusts as high as 18 mph.
Sunny

 Sunday
Night
Sunday Night: Partly cloudy, with a low around 48.
Partly Cloudy

 Monday

Monday: A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 80.
Sunny then
Chance
T-storms
 Monday
Night
Monday Night: A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 50.
Chance
T-storms then
Partly Cloudy
 Tuesday

Tuesday: Showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 80.
Mostly Sunny
then Showers
Likely
Hi 81 °F Lo 49 °F Hi 76 °F Lo 46 °F Hi 80 °F Lo 48 °F Hi 80 °F Lo 50 °F Hi 80 °F

 

Today
 
 A 30 percent chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 81. South southwest wind 6 to 11 mph, with gusts as high as 18 mph.
Tonight
 
 Partly cloudy, with a low around 49. Southwest wind 5 to 11 mph, with gusts as high as 18 mph.
Saturday
 
 A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 76. Southwest wind 5 to 7 mph becoming north in the afternoon. Winds could gust as high as 16 mph.
Saturday Night
 
 Mostly clear, with a low around 46. Northwest wind around 6 mph becoming calm. Winds could gust as high as 15 mph.
Sunday
 
 Sunny, with a high near 80. Southwest wind 6 to 8 mph, with gusts as high as 18 mph.
Sunday Night
 
 Partly cloudy, with a low around 48.
Monday
 
 A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 80.
Monday Night
 
 A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 50.
Tuesday
 
 Showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 80.
Tuesday Night
 
 A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 51.
Wednesday
 
 A chance of showers and thunderstorms. Mostly sunny, with a high near 82.
Wednesday Night
 
 A slight chance of showers and thunderstorms. Partly cloudy, with a low around 51.
Thursday
 
 A slight chance of showers and thunderstorms. Mostly sunny, with a high near 84.

 

Forecast from NOAA-NWS for Castle Rock CO.