Highlands Ranch, CO Weather & Growing Conditions
Today
77°F
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms between noon and 3pm, then showers and thunderstorms likely. Mostly sunny. High near 77, with temperatures falling to around 69 in the afternoon. East northeast wind 2 to 8 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 to 8 mph ENE | 57% |
| Tonight | 52°F | Chance Showers And Thunderstorms then Partly Cloudy | 6 mph SSE | 41% |
| Sunday | 72°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 to 10 mph WSW | 31% |
| Sunday Night | 51°F | Chance Showers And Thunderstorms then Partly Cloudy | 1 to 7 mph NNE | 30% |
| Monday | 74°F | Sunny | 1 to 9 mph SE | 5% |
| Monday Night | 52°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 2 to 9 mph S | 17% |
| Tuesday | 77°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 7 mph ESE | 19% |
| Tuesday Night | 53°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 to 8 mph S | 15% |
| Wednesday | 78°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 3 to 7 mph ESE | 16% |
| Wednesday Night | 54°F | Mostly Cloudy | 6 mph SSW | 14% |
| Thursday | 79°F | Mostly Sunny | 3 to 7 mph SE | 12% |
| Thursday Night | 55°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 8 mph S | 16% |
| Friday | 80°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 9 mph S | 17% |
| Friday Night | 56°F | Slight Chance Rain Showers | 9 mph S | 21% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Highlands Ranch, CO
Last spring frost
May 2
First fall frost
Oct 11
Growing season
160 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, Marston Fltr Plt, Co (5.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.