Summit, UT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Summit, a community in Iron County, Utah.
Today
93°F
Patchy Smoke then Sunny
Patchy smoke before noon. Sunny. High near 93, with temperatures falling to around 91 in the afternoon. West southwest wind 2 to 12 mph.
7-day forecast for Summit
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 93°F | Patchy Smoke then Sunny | 2 to 12 mph WSW | 0% |
| Tonight | 68°F | Mostly Clear | 3 to 13 mph SSW | 0% |
| Wednesday | 92°F | Sunny | 2 to 9 mph SW | 0% |
| Wednesday Night | 68°F | Mostly Clear | 3 to 8 mph SSW | 0% |
| Thursday | 93°F | Sunny | 1 to 7 mph SW | 6% |
| Thursday Night | 68°F | Mostly Clear | 1 to 8 mph S | 1% |
| Friday | 93°F | Sunny | 1 to 6 mph SSW | 8% |
| Friday Night | 69°F | Partly Cloudy | 7 mph S | 2% |
| Saturday | 93°F | Sunny then Slight Chance Showers And Thunderstorms | 3 to 7 mph SW | 15% |
| Saturday Night | 69°F | Partly Cloudy | 6 to 9 mph SSE | 3% |
| Sunday | 91°F | Sunny then Slight Chance Showers And Thunderstorms | 6 to 12 mph SSW | 15% |
| Sunday Night | 68°F | Slight Chance Showers And Thunderstorms | 6 to 12 mph S | 15% |
| Monday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 to 13 mph SW | 32% |
| Monday Night | 65°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 6 to 13 mph S | 22% |
Forecast source: National Weather Service (api.weather.gov) for Summit (37.805, -112.933). Updated through the day.
Growing snapshot for Summit
Last spring frost
Jun 21
First fall frost
Sep 12
Growing season
82 days
Hardiness zone
6b
More local growing data for Summit: nearby ZIP 84772 weather · frost dates · planting calendar · Utah frost dates
Nearby towns & communities
Beryl Junction
Brian Head
Cedar City
Cedar Highlands
Enoch
Kanarraville
Modena
Newcastle
Paragonah
Parowan
Climate data from the nearest NOAA station, Brian Head, Ut (8.8 mi from Summit). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.