Eureka, UT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Eureka, a city in Juab County, Utah.
Tonight
46°F
Mostly Clear
Mostly clear. Low around 46, with temperatures rising to around 48 overnight. North northwest wind 3 to 8 mph.
7-day forecast for Eureka
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 46°F | Mostly Clear | 3 to 8 mph NNW | 1% |
| Sunday | 66°F | Sunny | 3 to 7 mph NNW | 0% |
| Sunday Night | 47°F | Partly Cloudy | 5 mph NNE | 0% |
| Monday | 71°F | Mostly Sunny | 5 mph NE | 0% |
| Monday Night | 53°F | Mostly Cloudy | 3 mph NE | 7% |
| Tuesday | 70°F | Chance Showers And Thunderstorms | 3 to 7 mph S | 49% |
| Tuesday Night | 49°F | Chance Showers And Thunderstorms then Partly Cloudy | 5 mph SSE | 37% |
| Wednesday | 71°F | Sunny | 6 mph S | 6% |
| Wednesday Night | 52°F | Mostly Clear | 5 mph ENE | 1% |
| Thursday | 75°F | Sunny | 5 mph SSE | 1% |
| Thursday Night | 55°F | Partly Cloudy | 6 mph SE | 4% |
| Friday | 74°F | Mostly Sunny | 8 mph S | 8% |
| Friday Night | 55°F | Slight Chance Showers And Thunderstorms | 8 mph S | 22% |
| Saturday | 74°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 7 to 12 mph S | 21% |
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 Sep 20, 2026.