Highlands Ranch, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Highlands Ranch, a community in Douglas County, Colorado.
Overnight
34°F
Mostly Cloudy
Mostly cloudy. Low around 34, with temperatures rising to around 36 overnight. South southwest wind around 5 mph.
7-day forecast for Highlands Ranch
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 34°F | Mostly Cloudy | 5 mph SSW | 0% |
| Wednesday | 56°F | Partly Sunny then Chance Rain Showers | 3 to 8 mph SE | 35% |
| Wednesday Night | 35°F | Chance Rain Showers then Mostly Cloudy | 2 to 7 mph NNW | 35% |
| Thursday | 57°F | Sunny | 2 to 7 mph SE | 0% |
| Thursday Night | 36°F | Partly Cloudy | 2 to 7 mph S | 0% |
| Friday | 56°F | Mostly Sunny | 6 mph NNW | 9% |
| Friday Night | 33°F | Mostly Clear | 6 mph WSW | 9% |
| Saturday | 58°F | Sunny | 2 to 9 mph E | 2% |
| Saturday Night | 34°F | Mostly Clear | 3 to 9 mph SSE | 0% |
| Sunday | 65°F | Sunny | 2 to 12 mph SSE | 0% |
| Sunday Night | 37°F | Mostly Clear | 3 to 9 mph SSW | 0% |
| Monday | 66°F | Sunny | 2 to 9 mph SSE | 0% |
| Monday Night | 38°F | Partly Cloudy | 6 mph WSW | 0% |
| Tuesday | 64°F | Mostly Sunny | 5 mph NNE | 0% |
Forecast source: National Weather Service (api.weather.gov) for Highlands Ranch (39.541, -104.971). Updated through the day.
Growing snapshot for Highlands Ranch
Last spring frost
May 5
First fall frost
Oct 8
Growing season
154 days
Hardiness zone
6a
More local growing data for Highlands Ranch: nearby ZIP 80126 weather · frost dates · planting calendar · Colorado frost dates
Nearby towns & communities
Acres Green
Castle Pines
Castle Pines Village
Castle Rock
Franktown
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, Denver Centennial Ap, Co (6.4 mi from Highlands Ranch). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.