Eureka, UT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Eureka, a city in Juab County, Utah.
Today
63°F
Mostly Sunny then Isolated Showers And Thunderstorms
Isolated showers and thunderstorms between noon and 3pm. Mostly sunny, with a high near 63. Northwest wind around 8 mph. Chance of precipitation is 20%.
7-day forecast for Eureka
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 63°F | Mostly Sunny then Isolated Showers And Thunderstorms | 8 mph NW | 18% |
| Tonight | 45°F | Mostly Clear | 3 to 8 mph N | 3% |
| Sunday | 66°F | Sunny | 6 mph NNE | 0% |
| Sunday Night | 47°F | Partly Cloudy | 5 mph NE | 0% |
| Monday | 71°F | Mostly Sunny | 5 mph ENE | 0% |
| Monday Night | 52°F | Mostly Cloudy | 3 mph NE | 11% |
| Tuesday | 68°F | Chance Showers And Thunderstorms | 5 mph SSE | 46% |
| Tuesday Night | 48°F | Chance Showers And Thunderstorms then Mostly Cloudy | 5 mph S | 27% |
| Wednesday | 71°F | Sunny | 6 mph S | 8% |
| Wednesday Night | 51°F | Mostly Clear | 3 mph SSW | 3% |
| Thursday | 74°F | Sunny | 5 mph SSE | 1% |
| Thursday Night | 53°F | Partly Cloudy | 5 mph S | 1% |
| Friday | 74°F | Mostly Sunny | 7 mph S | 9% |
| Friday Night | 54°F | Partly Cloudy | 5 to 8 mph SSE | 12% |
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 19, 2026.