West Valley City, UT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for West Valley City, a city in Salt Lake County, Utah.
This Afternoon
75°F
Scattered Showers And Thunderstorms
Scattered showers and thunderstorms before 3pm, then showers and thunderstorms. Mostly cloudy. High near 75, with temperatures falling to around 71 in the afternoon. South southwest wind around 12 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for West Valley City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 75°F | Scattered Showers And Thunderstorms | 12 mph SSW | 83% |
| Tonight | 54°F | Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 1 to 6 mph W | 82% |
| Saturday | 70°F | Mostly Sunny | 2 to 7 mph WNW | 14% |
| Saturday Night | 51°F | Partly Cloudy | 2 to 7 mph ENE | 0% |
| Sunday | 72°F | Sunny | 2 to 6 mph NNW | 0% |
| Sunday Night | 53°F | Partly Cloudy | 2 to 6 mph ENE | 0% |
| Monday | 77°F | Mostly Sunny | 2 mph SSE | 0% |
| Monday Night | 58°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph NNE | 13% |
| Tuesday | 77°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 mph S | 22% |
| Tuesday Night | 56°F | Slight Chance Showers And Thunderstorms | 6 mph SE | 24% |
| Wednesday | 78°F | Sunny | 5 mph S | 11% |
| Wednesday Night | 57°F | Mostly Clear | 5 mph ENE | 3% |
| Thursday | 81°F | Sunny | 5 mph S | 4% |
| Thursday Night | 60°F | Partly Cloudy | 3 to 7 mph ESE | 6% |
Forecast source: National Weather Service (api.weather.gov) for West Valley City (40.688, -112.012). Updated through the day.
Growing snapshot for West Valley City
Last spring frost
Apr 8
First fall frost
Oct 31
Growing season
204 days
Hardiness zone
7b
More local growing data for West Valley City: nearby ZIP 84120 weather · frost dates · planting calendar · Utah frost dates
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Climate data from the nearest NOAA station, Salt Lake City Intl Ap, Ut (5.9 mi from West Valley City). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.