Eureka, UT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Eureka, a city in Juab County, Utah.
Today
86°F
Patchy Smoke
Patchy smoke. Sunny. High near 86, with temperatures falling to around 84 in the afternoon. Northwest wind 5 to 13 mph.
7-day forecast for Eureka
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Patchy Smoke | 5 to 13 mph NW | 0% |
| Tonight | 59°F | Patchy Smoke | 3 to 12 mph NNW | 0% |
| Wednesday | 87°F | Patchy Smoke | 3 to 12 mph NNE | 0% |
| Wednesday Night | 61°F | Patchy Smoke then Mostly Clear | 3 to 10 mph NE | 0% |
| Thursday | 91°F | Sunny | 3 to 8 mph SSW | 0% |
| Thursday Night | 64°F | Mostly Clear | 3 to 12 mph SE | 0% |
| Friday | 92°F | Sunny | 3 to 7 mph S | 0% |
| Friday Night | 66°F | Mostly Clear | 3 to 8 mph W | 0% |
| Saturday | 92°F | Sunny | 5 to 8 mph SSW | 1% |
| Saturday Night | 68°F | Partly Cloudy | 7 mph S | 3% |
| Sunday | 91°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 7 to 10 mph SSW | 15% |
| Sunday Night | 67°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 7 to 12 mph SW | 13% |
| Monday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 12 mph SW | 17% |
| Monday Night | 65°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 7 to 10 mph SW | 24% |
Forecast source: National Weather Service (api.weather.gov) for Eureka (39.959, -112.115). Updated through the day.
Growing snapshot for Eureka
Last spring frost
May 15
First fall frost
Oct 1
Growing season
137 days
Hardiness zone
6b
More local growing data for Eureka: nearby ZIP 84628 weather · frost dates · planting calendar · Utah frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Little Sahara Rec Area, Ut (17.1 mi from Eureka). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.