Castle Pines, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Castle Pines, a city in Douglas County, Colorado.
Today
78°F
Patchy Smoke
Patchy smoke before noon, then patchy smoke and a slight chance of showers and thunderstorms between noon and 3pm, then patchy smoke and a chance of showers and thunderstorms. Mostly sunny. High near 78, with temperatures falling to around 72 in the afternoon. East northeast wind 6 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Castle Pines
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 78°F | Patchy Smoke | 6 to 10 mph ENE | 25% |
| Tonight | 55°F | Patchy Smoke | 3 to 12 mph S | 15% |
| Wednesday | 85°F | Patchy Smoke then Sunny | 3 to 10 mph N | 0% |
| Wednesday Night | 59°F | Mostly Clear | 9 to 13 mph SSE | 7% |
| Thursday | 92°F | Sunny | 3 to 9 mph NNW | 1% |
| Thursday Night | 61°F | Clear | 7 to 10 mph S | 3% |
| Friday | 94°F | Sunny | 8 mph NE | 0% |
| Friday Night | 65°F | Mostly Clear | 9 to 14 mph SSE | 1% |
| Saturday | 96°F | Sunny | 6 to 13 mph NNW | 0% |
| Saturday Night | 65°F | Partly Cloudy | 8 to 14 mph SSE | 1% |
| Sunday | 96°F | Sunny | 3 to 8 mph NE | 8% |
| Sunday Night | 66°F | Partly Cloudy | 8 to 12 mph SSW | 4% |
| Monday | 94°F | Sunny | 9 mph NW | 12% |
| Monday Night | 65°F | Partly Cloudy | 6 to 9 mph W | 13% |
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 Aug 4, 2026.