National Weather Service Forecast for: Castle Rock CO
Issued by: National Weather Service Denver-Boulder, CO
Updated: 12:46 am MDT Jun 22, 2026
 
Overnight

Overnight: Mostly clear, with a low around 54. South wind 3 to 5 mph.
Mostly Clear

 Monday

Monday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 87. South wind 7 to 10 mph becoming east in the afternoon. Winds could gust as high as 16 mph.
Sunny then
Chance
T-storms
 Monday
Night
Monday Night: A 20 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 56. Breezy, with a south wind 7 to 17 mph, with gusts as high as 28 mph.
Slight Chance
T-storms and
Breezy then
Mostly Clear
 Tuesday

Tuesday: Increasing clouds, with a high near 86. West southwest wind 6 to 10 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph.
Increasing
Clouds

 Tuesday
Night
Tuesday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers. Partly cloudy, with a low around 55. Northeast wind 5 to 9 mph becoming calm. Winds could gust as high as 17 mph. Chance of precipitation is 40%.
Chance
T-storms then
Slight Chance
Showers
 Wednesday

Wednesday: A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 86.
Sunny then
Chance
T-storms
 Wednesday
Night
Wednesday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 56. Chance of precipitation is 50%.
Chance
T-storms then
Slight Chance
Showers
 Thursday

Thursday: Showers and thunderstorms likely after noon. Partly sunny, with a high near 83.
Partly Sunny
then T-storms
Likely
 Thursday
Night
Thursday Night: A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 56.
Chance
T-storms then
Mostly Cloudy
Lo 54 °F Hi 87 °F Lo 56 °F Hi 86 °F Lo 55 °F Hi 86 °F Lo 56 °F Hi 83 °F Lo 56 °F

 

Overnight
 
 Mostly clear, with a low around 54. South wind 3 to 5 mph.
Monday
 
 A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 87. South wind 7 to 10 mph becoming east in the afternoon. Winds could gust as high as 16 mph.
Monday Night
 
 A 20 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 56. Breezy, with a south wind 7 to 17 mph, with gusts as high as 28 mph.
Tuesday
 
 Increasing clouds, with a high near 86. West southwest wind 6 to 10 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
 
 A chance of showers and thunderstorms before midnight, then a slight chance of showers. Partly cloudy, with a low around 55. Northeast wind 5 to 9 mph becoming calm. Winds could gust as high as 17 mph. Chance of precipitation is 40%.
Wednesday
 
 A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 86.
Wednesday Night
 
 A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 56. Chance of precipitation is 50%.
Thursday
 
 Showers and thunderstorms likely after noon. Partly sunny, with a high near 83.
Thursday Night
 
 A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 56.
Friday
 
 A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 90.
Friday Night
 
 Partly cloudy, with a low around 59.
Saturday
 
 Sunny, with a high near 96. Breezy.
Saturday Night
 
 Mostly clear, with a low around 59. Breezy.
Sunday
 
 Sunny, with a high near 93. Breezy.

 

Forecast from NOAA-NWS for Castle Rock CO.