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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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
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 Sep 19, 2026.