Boulder, UT Weather & Growing Conditions
Tonight
33°F
Mostly Clear
Mostly clear. Low around 33, with temperatures rising to around 35 overnight. Southwest wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 33°F | Mostly Clear | 2 mph SW | 5% |
| Wednesday | 45°F | Slight Chance Light Snow then Sunny | 3 mph W | 15% |
| Wednesday Night | 31°F | Mostly Clear | 5 mph NNW | 0% |
| Thursday | 47°F | Sunny | 0 to 3 mph ENE | 0% |
| Thursday Night | 33°F | Partly Cloudy | 2 mph NW | 0% |
| Friday | 48°F | Sunny | 0 to 3 mph NNE | 0% |
| Friday Night | 33°F | Mostly Clear | 0 to 3 mph N | 0% |
| Saturday | 52°F | Sunny | 0 to 5 mph NNE | 0% |
| Saturday Night | 37°F | Clear | 1 mph N | 0% |
| Sunday | 53°F | Sunny | 0 to 3 mph N | 0% |
| Sunday Night | 38°F | Mostly Clear | 0 mph | 0% |
| Monday | 52°F | Mostly Sunny | 0 to 3 mph N | 4% |
| Monday Night | 39°F | Partly Cloudy | 1 mph NNW | 2% |
| Tuesday | 53°F | Mostly Sunny | 2 mph NNW | 10% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Boulder, UT
Last spring frost
May 4
First fall frost
Oct 14
Growing season
160 days
Hardiness zone
7a
Explore more for Boulder, UT: full frost dates · planting calendar · Utah frost dates
Climate data from the nearest NOAA station, Boulder, Ut (3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.