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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.

Overnight
52°F
Mostly Clear
Mostly clear. Low around 52, with temperatures rising to around 54 overnight. West northwest wind around 3 mph.

7-day forecast for Boulder

WhenTempForecastWindPrecip
Overnight 52°F Mostly Clear 3 mph WNW 3%
Saturday 71°F Sunny 2 to 8 mph SW 6%
Saturday Night 50°F Mostly Clear 2 to 7 mph NW 1%
Sunday 70°F Sunny 2 to 6 mph SSW 0%
Sunday Night 53°F Partly Cloudy 0 to 6 mph NNE 0%
Monday 69°F Mostly Sunny 0 to 7 mph SE 1%
Monday Night 53°F Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms 0 to 6 mph SW 29%
Tuesday 66°F Showers And Thunderstorms Likely 0 to 6 mph SE 74%
Tuesday Night 49°F Chance Showers And Thunderstorms 0 to 5 mph N 30%
Wednesday 67°F Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms 0 to 6 mph ESE 24%
Wednesday Night 51°F Slight Chance Showers And Thunderstorms then Mostly Clear 0 to 3 mph ENE 15%
Thursday 68°F Mostly Sunny then Slight Chance Showers And Thunderstorms 0 to 5 mph ENE 22%
Thursday Night 52°F Chance Showers And Thunderstorms 0 to 3 mph NE 28%
Friday 67°F Chance Rain Showers 0 to 6 mph ESE 44%

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.