Portage, UT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Portage, a town in Box Elder County, Utah.
This Afternoon
71°F
Showers And Thunderstorms
Showers and thunderstorms. Mostly cloudy. High near 71, with temperatures falling to around 66 in the afternoon. South southeast wind around 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Portage
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 71°F | Showers And Thunderstorms | 10 mph SSE | 79% |
| Tonight | 45°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 2 to 8 mph N | 56% |
| Saturday | 65°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 to 7 mph NW | 51% |
| Saturday Night | 43°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph NNW | 10% |
| Sunday | 71°F | Sunny | 5 mph NW | 0% |
| Sunday Night | 47°F | Mostly Clear | 5 mph NE | 0% |
| Monday | 76°F | Sunny | 3 mph E | 0% |
| Monday Night | 51°F | Partly Cloudy | 3 mph NE | 0% |
| Tuesday | 77°F | Mostly Sunny | 5 mph E | 4% |
| Tuesday Night | 51°F | Slight Chance Showers And Thunderstorms | 5 mph SSE | 12% |
| Wednesday | 78°F | Sunny | 2 to 6 mph S | 4% |
| Wednesday Night | 51°F | Mostly Clear | 1 to 5 mph NW | 4% |
| Thursday | 80°F | Sunny | 2 to 6 mph ESE | 2% |
| Thursday Night | 53°F | Partly Cloudy | 1 to 5 mph SE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Portage (41.976, -112.241). Updated through the day.
Growing snapshot for Portage
Last spring frost
May 3
First fall frost
Oct 12
Growing season
160 days
Hardiness zone
6a
More local growing data for Portage: nearby ZIP 84330 weather · frost dates · planting calendar · Utah frost dates
Nearby towns & communities
Bear River City
Brigham City
Corinne
Deweyville
Elwood
Fielding
Garland
Honeyville
Howell
Mantua
Perry
Plymouth
Riverside
Snowville
Thatcher
Tremonton
Climate data from the nearest NOAA station, Cutler Dam, Ut (7.7 mi from Portage). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.