National Weather Service Forecast for: Castle Rock CO
Issued by: National Weather Service Denver-Boulder, CO
Updated: 11:47 am MST Nov 1, 2026
 
Tonight

Tonight: A 30 percent chance of rain, mainly before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 42. South wind 8 to 13 mph becoming light southwest after midnight. Winds could gust as high as 20 mph.
Chance Rain
then Partly
Cloudy
 Monday

Monday: Rain likely, mainly after 11am. Mostly cloudy, with a high near 53. Breezy, with a light and variable wind becoming north 12 to 17 mph in the morning. Winds could gust as high as 26 mph. Chance of precipitation is 70%.
Rain Likely
and Breezy

 Monday
Night
Monday Night: A 40 percent chance of rain, mainly before 2am. Cloudy, with a low around 39. Breezy, with a north northwest wind 5 to 15 mph, with gusts as high as 28 mph.
Chance Rain
and Breezy

 Tuesday

Tuesday: Mostly cloudy through mid morning, then gradual clearing, with a high near 57. North wind around 6 mph becoming calm in the afternoon.
Becoming
Sunny

 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 35. Calm wind becoming south southwest around 5 mph.
Mostly Clear

 Wednesday

Wednesday: A 20 percent chance of showers after 11am. Mostly sunny, with a high near 57.
Slight Chance
Showers

 Wednesday
Night
Wednesday Night: A chance of rain showers before 2am, then a chance of rain and snow showers. Mostly cloudy, with a low around 35. Chance of precipitation is 50%.
Chance
Showers then
Chance
Rain/Snow
 Thursday

Thursday: Sunny, with a high near 55.
Sunny

 Thursday
Night
Thursday Night: Mostly clear, with a low around 33.
Mostly Clear
Lo 42 °F Hi 53 °F Lo 39 °F Hi 57 °F Lo 35 °F Hi 57 °F Lo 35 °F Hi 55 °F Lo 33 °F

 

Tonight
 
 A 30 percent chance of rain, mainly before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 42. South wind 8 to 13 mph becoming light southwest after midnight. Winds could gust as high as 20 mph.
Monday
 
 Rain likely, mainly after 11am. Mostly cloudy, with a high near 53. Breezy, with a light and variable wind becoming north 12 to 17 mph in the morning. Winds could gust as high as 26 mph. Chance of precipitation is 70%.
Monday Night
 
 A 40 percent chance of rain, mainly before 2am. Cloudy, with a low around 39. Breezy, with a north northwest wind 5 to 15 mph, with gusts as high as 28 mph.
Tuesday
 
 Mostly cloudy through mid morning, then gradual clearing, with a high near 57. North wind around 6 mph becoming calm in the afternoon.
Tuesday Night
 
 Mostly clear, with a low around 35. Calm wind becoming south southwest around 5 mph.
Wednesday
 
 A 20 percent chance of showers after 11am. Mostly sunny, with a high near 57.
Wednesday Night
 
 A chance of rain showers before 2am, then a chance of rain and snow showers. Mostly cloudy, with a low around 35. Chance of precipitation is 50%.
Thursday
 
 Sunny, with a high near 55.
Thursday Night
 
 Mostly clear, with a low around 33.
Friday
 
 Mostly sunny, with a high near 58.
Friday Night
 
 Partly cloudy, with a low around 35.
Saturday
 
 A slight chance of rain and snow showers. Mostly sunny, with a high near 54.
Saturday Night
 
 A slight chance of rain and snow showers. Partly cloudy, with a low around 33.
Sunday
 
 Sunny, with a high near 60.

 

Forecast from NOAA-NWS for Castle Rock CO.