Charleston, UT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Charleston, a town in Wasatch County, Utah.
Today
90°F
Patchy Smoke
Patchy smoke. Sunny. High near 90, with temperatures falling to around 88 in the afternoon. West northwest wind 2 to 13 mph.
7-day forecast for Charleston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 90°F | Patchy Smoke | 2 to 13 mph WNW | 0% |
| Tonight | 48°F | Patchy Smoke | 2 to 12 mph E | 0% |
| Wednesday | 91°F | Patchy Smoke | 1 to 12 mph SSW | 0% |
| Wednesday Night | 50°F | Patchy Smoke then Mostly Clear | 2 to 10 mph NE | 0% |
| Thursday | 95°F | Sunny | 1 to 10 mph N | 0% |
| Thursday Night | 56°F | Clear | 2 to 12 mph NNE | 0% |
| Friday | 97°F | Sunny | 1 to 8 mph S | 0% |
| Friday Night | 59°F | Mostly Clear | 2 to 10 mph N | 0% |
| Saturday | 97°F | Sunny | 1 to 9 mph S | 1% |
| Saturday Night | 60°F | Mostly Clear | 2 to 8 mph E | 3% |
| Sunday | 95°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 10 mph SSW | 15% |
| Sunday Night | 58°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 to 9 mph ESE | 10% |
| Monday | 93°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 12 mph SSW | 15% |
| Monday Night | 56°F | Slight Chance Showers And Thunderstorms | 3 to 9 mph ESE | 15% |
Forecast source: National Weather Service (api.weather.gov) for Charleston (40.467, -111.459). Updated through the day.
Growing snapshot for Charleston
Last spring frost
May 31
First fall frost
Sep 11
Growing season
101 days
Hardiness zone
6a
More local growing data for Charleston: nearby ZIP 84049 weather · frost dates · planting calendar · Utah frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Snake Creek Powerhouse, Ut (2.9 mi from Charleston). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.