Boulder, UT Weather & Growing Conditions
Today
95°F
Patchy Smoke
Patchy smoke before 3pm. Sunny, with a high near 95. West southwest wind 3 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 95°F | Patchy Smoke | 3 to 8 mph WSW | 0% |
| Tonight | 66°F | Smoke | 5 to 8 mph NW | 0% |
| Wednesday | 92°F | Patchy Smoke | 7 mph SW | 0% |
| Wednesday Night | 66°F | Mostly Clear | 7 mph NW | 0% |
| Thursday | 91°F | Sunny then Isolated Showers And Thunderstorms | 1 to 6 mph N | 10% |
| Thursday Night | 66°F | Partly Cloudy | 5 mph NW | 0% |
| Friday | 92°F | Sunny | 6 mph NE | 4% |
| Friday Night | 67°F | Partly Cloudy | 5 mph WSW | 0% |
| Saturday | 91°F | Sunny | 1 to 7 mph WSW | 9% |
| Saturday Night | 67°F | Partly Cloudy | 6 mph NW | 1% |
| Sunday | 90°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 3 to 7 mph WSW | 33% |
| Sunday Night | 65°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 6 mph WNW | 15% |
| Monday | 88°F | Partly Sunny then Chance Showers And Thunderstorms | 6 mph WNW | 50% |
| Monday Night | 63°F | Slight Chance Showers And Thunderstorms | 6 mph WNW | 23% |
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 Aug 4, 2026.