Harman US

Gunbarrel, CO Weather & Growing Conditions

Tonight
53°F
Partly Cloudy
Partly cloudy, with a low around 53. West wind around 3 mph. New rainfall amounts less than a tenth of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
Tonight 53°F Partly Cloudy 3 mph W 3%
Saturday 76°F Slight Chance Rain Showers then Chance Showers And Thunderstorms 2 to 6 mph WSW 65%
Saturday Night 49°F Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms 1 to 5 mph W 48%
Sunday 71°F Chance Showers And Thunderstorms 1 to 5 mph NE 52%
Sunday Night 47°F Chance Rain Showers then Partly Cloudy 0 to 5 mph NNW 33%
Monday 73°F Sunny 0 to 5 mph ENE 3%
Monday Night 49°F Mostly Clear 0 to 3 mph N 8%
Tuesday 76°F Mostly Sunny then Slight Chance Showers And Thunderstorms 0 to 5 mph ENE 19%
Tuesday Night 51°F Slight Chance Showers And Thunderstorms then Partly Cloudy 0 to 3 mph NW 19%
Wednesday 77°F Mostly Sunny then Slight Chance Showers And Thunderstorms 0 to 5 mph ENE 18%
Wednesday Night 51°F Slight Chance Rain Showers then Mostly Cloudy 3 mph SW 18%
Thursday 78°F Mostly Sunny then Slight Chance Showers And Thunderstorms 1 to 6 mph NE 16%
Thursday Night 52°F Chance Rain Showers then Mostly Cloudy 0 to 5 mph SSW 27%
Friday 79°F Mostly Sunny then Slight Chance Showers And Thunderstorms 0 to 5 mph ENE 18%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Gunbarrel, CO

Last spring frost
May 6
First fall frost
Oct 5
Growing season
151 days
Hardiness zone
6a

Explore more for Gunbarrel, CO: full frost dates · planting calendar · Colorado frost dates

Climate data from the nearest NOAA station, Boulder, Co (5.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.