National Weather Service Forecast for: Castle Rock CO
Issued by: National Weather Service Denver-Boulder, CO
Updated: 12:46 pm MDT Sep 12, 2026
 
Tonight

Tonight: Mostly clear, with a low around 57. South wind around 10 mph, with gusts as high as 17 mph.
Mostly Clear

 Sunday

Sunday: A slight chance of showers, then a chance of showers and thunderstorms after 3pm. Increasing clouds, with a high near 91. South southwest wind 5 to 9 mph becoming light southwest. Winds could gust as high as 16 mph. Chance of precipitation is 30%.
Sunny then
Chance
Showers
 Sunday
Night
Sunday Night: A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 3am. Partly cloudy, with a low around 64. South southwest wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Chance
Showers

 Monday

Monday: A chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 87. South southwest wind 5 to 11 mph becoming north northwest in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 40%.
Partly Sunny
then Chance
T-storms
 Monday
Night
Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 57. North northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.
Chance
Showers

 Tuesday

Tuesday: A slight chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 77. Chance of precipitation is 60%.
Slight Chance
Showers then
Showers
Likely
 Tuesday
Night
Tuesday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 55. Chance of precipitation is 50%.
Chance
Showers then
Slight Chance
Showers
 Wednesday

Wednesday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 82.
Mostly Sunny
then Showers
Likely
 Wednesday
Night
Wednesday Night: Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 56.
Showers
Likely
Lo 57 °F Hi 91 °F Lo 64 °F Hi 87 °F Lo 57 °F Hi 77 °F Lo 55 °F Hi 82 °F Lo 56 °F

 

Tonight
 
 Mostly clear, with a low around 57. South wind around 10 mph, with gusts as high as 17 mph.
Sunday
 
 A slight chance of showers, then a chance of showers and thunderstorms after 3pm. Increasing clouds, with a high near 91. South southwest wind 5 to 9 mph becoming light southwest. Winds could gust as high as 16 mph. Chance of precipitation is 30%.
Sunday Night
 
 A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 3am. Partly cloudy, with a low around 64. South southwest wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Monday
 
 A chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 87. South southwest wind 5 to 11 mph becoming north northwest in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 40%.
Monday Night
 
 A chance of showers and thunderstorms. Mostly cloudy, with a low around 57. North northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.
Tuesday
 
 A slight chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 77. Chance of precipitation is 60%.
Tuesday Night
 
 A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 55. Chance of precipitation is 50%.
Wednesday
 
 Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 82.
Wednesday Night
 
 Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 56.
Thursday
 
 A slight chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 76.
Thursday Night
 
 A chance of showers and thunderstorms. Mostly cloudy, with a low around 53.
Friday
 
 A chance of showers and thunderstorms. Partly sunny, with a high near 77.
Friday Night
 
 A chance of showers and thunderstorms. Partly cloudy, with a low around 52.
Saturday
 
 A slight chance of showers and thunderstorms. Mostly sunny, with a high near 77.

 

Forecast from NOAA-NWS for Castle Rock CO.