Castle Pines, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Castle Pines, a city in Douglas County, Colorado.
This Afternoon
80°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy. High near 80, with temperatures falling to around 70 in the afternoon. North wind around 7 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Castle Pines
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 80°F | Showers And Thunderstorms Likely | 7 mph N | 62% |
| Tonight | 52°F | Chance Showers And Thunderstorms then Partly Cloudy | 3 to 8 mph WSW | 40% |
| Saturday | 75°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 to 8 mph ENE | 55% |
| Saturday Night | 50°F | Chance Showers And Thunderstorms then Partly Cloudy | 6 mph SSE | 47% |
| Sunday | 69°F | Showers And Thunderstorms Likely | 3 to 8 mph ESE | 57% |
| Sunday Night | 48°F | Chance Showers And Thunderstorms then Partly Cloudy | 2 to 7 mph ESE | 36% |
| Monday | 71°F | Sunny | 3 to 8 mph SSE | 5% |
| Monday Night | 51°F | Partly Cloudy | 10 mph SSE | 14% |
| Tuesday | 75°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 9 mph SE | 21% |
| Tuesday Night | 52°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 7 to 10 mph SSE | 18% |
| Wednesday | 75°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 3 to 7 mph SE | 22% |
| Wednesday Night | 52°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 3 to 7 mph SSW | 17% |
| Thursday | 75°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 3 to 7 mph N | 16% |
| Thursday Night | 53°F | Slight Chance Rain Showers then Mostly Cloudy | 8 mph S | 22% |
Forecast source: National Weather Service (api.weather.gov) for Castle Pines (39.462, -104.871). Updated through the day.
Growing snapshot for Castle Pines
Last spring frost
May 9
First fall frost
Oct 2
Growing season
143 days
Hardiness zone
5b
More local growing data for Castle Pines: nearby ZIP 80108 weather · frost dates · planting calendar · Colorado frost dates
Nearby towns & communities
Acres Green
Castle Pines Village
Castle Rock
Franktown
Highlands Ranch
Larkspur
Lone Tree
Louviers
Parker
Perry Park
Roxborough Park
Sedalia
Sierra Ridge
Stepping Stone
Sterling Ranch
Stonegate
The Pinery
Westcreek
Climate data from the nearest NOAA station, Castle Rock, Co (3.7 mi from Castle Pines). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.