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
60°F
Patchy Smoke
Patchy smoke and a slight chance of rain showers. Mostly cloudy. Low around 60, with temperatures rising to around 64 overnight. North wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
7-day forecast for Highlands Ranch
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 60°F | Patchy Smoke | 9 to 13 mph N | 18% |
| Tuesday | 80°F | Patchy Smoke | 6 to 9 mph ENE | 24% |
| Tuesday Night | 57°F | Patchy Smoke | 2 to 9 mph W | 14% |
| Wednesday | 87°F | Patchy Smoke then Sunny | 2 to 9 mph NNE | 0% |
| Wednesday Night | 61°F | Mostly Clear | 9 mph SSE | 5% |
| Thursday | 95°F | Sunny | 3 to 9 mph N | 1% |
| Thursday Night | 63°F | Clear | 7 to 10 mph S | 2% |
| Friday | 97°F | Sunny | 6 to 9 mph E | 0% |
| Friday Night | 67°F | Mostly Clear | 9 to 13 mph SSE | 1% |
| Saturday | 98°F | Sunny | 7 to 13 mph N | 0% |
| Saturday Night | 67°F | Partly Cloudy | 8 to 12 mph S | 1% |
| Sunday | 98°F | Sunny | 5 to 9 mph ENE | 8% |
| Sunday Night | 68°F | Partly Cloudy | 10 mph SW | 3% |
| Monday | 97°F | Sunny | 7 to 10 mph NW | 13% |
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
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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 Aug 4, 2026.