Vernal, UT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Vernal, a city in Uintah County, Utah.
Tonight
45°F
Slight Chance Showers And Thunderstorms then Partly Cloudy
A slight chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 45. North northwest wind 0 to 5 mph.
7-day forecast for Vernal
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 45°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph NNW | 14% |
| Sunday | 67°F | Sunny | 0 mph | 0% |
| Sunday Night | 45°F | Partly Cloudy | 0 to 5 mph NNE | 0% |
| Monday | 70°F | Sunny | 0 to 5 mph ESE | 0% |
| Monday Night | 48°F | Partly Cloudy | 0 to 5 mph NW | 3% |
| Tuesday | 73°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph ENE | 11% |
| Tuesday Night | 49°F | Chance Showers And Thunderstorms | 0 to 5 mph NW | 53% |
| Wednesday | 71°F | Mostly Sunny | 0 to 5 mph S | 13% |
| Wednesday Night | 49°F | Mostly Clear | 0 mph | 3% |
| Thursday | 74°F | Sunny | 0 mph | 3% |
| Thursday Night | 50°F | Partly Cloudy | 0 mph | 9% |
| Friday | 72°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SE | 14% |
| Friday Night | 50°F | Chance Showers And Thunderstorms | 0 mph | 27% |
| Saturday | 73°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 23% |
Forecast source: National Weather Service (api.weather.gov) for Vernal (40.452, -109.538). Updated through the day.
Growing snapshot for Vernal
Last spring frost
May 6
First fall frost
Oct 7
Growing season
153 days
Hardiness zone
5b
More local growing data for Vernal: nearby ZIP 84078 weather · frost dates · planting calendar · Utah frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Vernal Municipal Ap, Ut (1.6 mi from Vernal). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.