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Boulder, UT Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Boulder, a town in Garfield County, Utah.

Tonight
52°F
Isolated Showers And Thunderstorms then Mostly Clear
Isolated showers and thunderstorms before midnight. Mostly clear, with a low around 52. Northwest wind around 3 mph.

7-day forecast for Boulder

WhenTempForecastWindPrecip
Tonight 52°F Isolated Showers And Thunderstorms then Mostly Clear 3 mph NW 13%
Saturday 69°F Sunny then Slight Chance Showers And Thunderstorms 1 to 7 mph WSW 12%
Saturday Night 49°F Mostly Clear 2 to 6 mph NW 1%
Sunday 69°F Sunny 1 to 6 mph WSW 0%
Sunday Night 52°F Partly Cloudy 0 to 5 mph NNE 0%
Monday 69°F Mostly Sunny 0 to 7 mph E 1%
Monday Night 52°F Chance Showers And Thunderstorms 0 to 5 mph SSW 37%
Tuesday 66°F Showers And Thunderstorms Likely then Chance Showers And Thunderstorms 0 to 6 mph SW 58%
Tuesday Night 49°F Chance Showers And Thunderstorms 0 to 3 mph NNW 39%
Wednesday 67°F Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms 0 to 5 mph ESE 22%
Wednesday Night 50°F Slight Chance Showers And Thunderstorms then Partly Cloudy 2 mph ENE 18%
Thursday 68°F Mostly Sunny then Chance Showers And Thunderstorms 0 to 6 mph ENE 30%
Thursday Night 52°F Chance Showers And Thunderstorms 0 to 3 mph N 25%
Friday 67°F Chance Rain Showers 0 to 5 mph SSE 48%

Forecast source: National Weather Service (api.weather.gov) for Boulder (37.923, -111.432). Updated through the day.

Growing snapshot for Boulder

Last spring frost
May 4
First fall frost
Oct 14
Growing season
160 days
Hardiness zone
7a

More local growing data for Boulder: nearby ZIP 84716 weather · frost dates · planting calendar · Utah frost dates

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Climate data from the nearest NOAA station, Boulder, Ut (3 mi from Boulder). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.