Highlands Ranch, CO Weather & Growing Conditions
Today
80°F
Patchy Smoke
Patchy smoke before noon, then patchy smoke and a slight chance of showers and thunderstorms. Mostly sunny. High near 80, with temperatures falling to around 75 in the afternoon. East northeast wind 6 to 9 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 80°F | Patchy Smoke | 6 to 9 mph ENE | 23% |
| Tonight | 58°F | Patchy Smoke | 3 to 12 mph SSW | 14% |
| Wednesday | 88°F | Patchy Smoke then Sunny | 2 to 10 mph NNE | 0% |
| Wednesday Night | 62°F | Mostly Clear | 8 to 12 mph SSE | 6% |
| Thursday | 95°F | Sunny | 3 to 9 mph N | 0% |
| Thursday Night | 64°F | Clear | 7 to 10 mph SSE | 2% |
| Friday | 97°F | Sunny | 6 to 9 mph NE | 0% |
| Friday Night | 68°F | Mostly Clear | 9 to 14 mph SSE | 1% |
| Saturday | 99°F | Sunny | 7 to 13 mph NNW | 0% |
| Saturday Night | 68°F | Partly Cloudy | 8 to 13 mph SSE | 1% |
| Sunday | 98°F | Sunny | 5 to 9 mph E | 7% |
| Sunday Night | 69°F | Partly Cloudy | 10 mph SW | 4% |
| Monday | 97°F | Sunny | 7 to 10 mph NW | 12% |
| Monday Night | 67°F | Partly Cloudy | 6 to 10 mph W | 13% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Highlands Ranch, CO
Last spring frost
May 5
First fall frost
Oct 8
Growing season
154 days
Hardiness zone
6a
Explore more for Highlands Ranch, CO: full frost dates · planting calendar · Colorado frost dates
Climate data from the nearest NOAA station, Denver Centennial Ap, Co (4.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.