Koosharem, UT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Koosharem, a town in Piute County, Utah.
Today
93°F
Areas Of Smoke
Areas of smoke. Sunny. High near 93, with temperatures falling to around 91 in the afternoon. West southwest wind 3 to 15 mph.
7-day forecast for Koosharem
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 93°F | Areas Of Smoke | 3 to 15 mph WSW | 0% |
| Tonight | 58°F | Smoke | 3 to 15 mph NNW | 0% |
| Wednesday | 93°F | Areas Of Smoke | 3 to 15 mph W | 0% |
| Wednesday Night | 58°F | Areas Of Smoke then Mostly Clear | 3 to 15 mph NNE | 0% |
| Thursday | 93°F | Sunny | 2 to 10 mph WSW | 2% |
| Thursday Night | 59°F | Mostly Clear | 3 to 10 mph SW | 0% |
| Friday | 94°F | Sunny | 2 to 9 mph WSW | 6% |
| Friday Night | 61°F | Partly Cloudy | 3 to 10 mph WSW | 0% |
| Saturday | 94°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 8 mph WSW | 17% |
| Saturday Night | 61°F | Partly Cloudy | 3 to 8 mph SSW | 2% |
| Sunday | 92°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 to 8 mph SW | 41% |
| Sunday Night | 59°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 to 9 mph SSW | 15% |
| Monday | 89°F | Partly Sunny then Showers And Thunderstorms Likely | 3 to 8 mph WSW | 55% |
| Monday Night | 57°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 3 to 8 mph SSW | 21% |
Forecast source: National Weather Service (api.weather.gov) for Koosharem (38.513, -111.882). Updated through the day.
Growing snapshot for Koosharem
Last spring frost
Jun 6
First fall frost
Sep 21
Growing season
104 days
Hardiness zone
5b
More local growing data for Koosharem: nearby ZIP 84732 weather · frost dates · planting calendar · Utah frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Koosharem, Ut (4.5 mi from Koosharem). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.