Trego, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Trego, a community in Washburn County, Wisconsin.
Overnight
49°F
Chance Rain Showers
A chance of rain showers. Cloudy, with a low around 49. East wind around 5 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Trego
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 49°F | Chance Rain Showers | 5 mph E | 38% |
| Saturday | 62°F | Chance Rain Showers then Patchy Fog | 5 to 10 mph NE | 27% |
| Saturday Night | 47°F | Patchy Fog | 5 mph NE | 7% |
| Sunday | 64°F | Mostly Cloudy | 5 to 15 mph NE | 1% |
| Sunday Night | 39°F | Mostly Cloudy | 5 to 10 mph NE | 0% |
| Monday | 64°F | Partly Sunny | 5 mph NE | 0% |
| Monday Night | 38°F | Partly Cloudy | 0 to 5 mph E | 1% |
| Tuesday | 68°F | Sunny | 0 to 5 mph E | 1% |
| Tuesday Night | 37°F | Mostly Clear | 0 to 5 mph E | 1% |
| Wednesday | 70°F | Sunny | 0 to 5 mph SE | 0% |
| Wednesday Night | 39°F | Mostly Clear | 0 to 5 mph SE | 2% |
| Thursday | 71°F | Mostly Sunny | 0 to 5 mph SE | 4% |
| Thursday Night | 43°F | Partly Cloudy | 0 mph | 3% |
| Friday | 73°F | Mostly Sunny | 0 to 5 mph SE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Trego (45.906, -91.831). Updated through the day.
Growing snapshot for Trego
Last spring frost
May 10
First fall frost
Oct 4
Growing season
144 days
Hardiness zone
4a
More local growing data for Trego: nearby ZIP 54888 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Minong 5 Wsw, Wi (6.4 mi from Trego). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.