Boulder, UT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Boulder, a town in Garfield County, Utah.
Today
96°F
Patchy Smoke
Patchy smoke before 3pm. Sunny, with a high near 96. Southwest wind 5 to 8 mph.
7-day forecast for Boulder
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 96°F | Patchy Smoke | 5 to 8 mph SW | 0% |
| Tonight | 66°F | Smoke | 5 to 8 mph NW | 0% |
| Wednesday | 94°F | Patchy Smoke | 7 mph SSW | 0% |
| Wednesday Night | 67°F | Mostly Clear | 7 mph NW | 0% |
| Thursday | 93°F | Sunny | 1 to 6 mph N | 9% |
| Thursday Night | 67°F | Partly Cloudy | 5 mph NW | 0% |
| Friday | 94°F | Sunny | 6 mph NE | 3% |
| Friday Night | 68°F | Partly Cloudy | 5 mph WSW | 0% |
| Saturday | 93°F | Sunny | 1 to 7 mph ESE | 8% |
| Saturday Night | 68°F | Partly Cloudy | 7 mph NW | 1% |
| Sunday | 91°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 3 to 7 mph WSW | 29% |
| Sunday Night | 66°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 3 to 7 mph WNW | 15% |
| Monday | 89°F | Partly Sunny then Chance Showers And Thunderstorms | 6 mph WNW | 46% |
| Monday Night | 64°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 2 to 7 mph WNW | 22% |
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
Nearby towns & communities
Climate data from the nearest NOAA station, Boulder, Ut (3 mi from Boulder). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.