Junction City, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Junction City, a village in Portage County, Wisconsin.
Today
80°F
Chance Rain Showers then Slight Chance Showers And Thunderstorms
A chance of rain showers before 1pm, then a slight chance of showers and thunderstorms between 1pm and 5pm. Mostly cloudy. High near 80, with temperatures falling to around 78 in the afternoon. Heat index values as high as 79. West southwest wind 8 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.
7-day forecast for Junction City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 80°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 8 to 13 mph WSW | 36% |
| Tonight | 57°F | Chance Rain Showers | 3 to 8 mph NW | 19% |
| Wednesday | 79°F | Mostly Sunny | 2 to 7 mph NNW | 3% |
| Wednesday Night | 54°F | Partly Cloudy | 1 to 6 mph NW | 1% |
| Thursday | 84°F | Sunny | 1 to 7 mph WSW | 1% |
| Thursday Night | 59°F | Mostly Clear | 7 mph SSW | 0% |
| Friday | 87°F | Sunny | 5 to 13 mph SW | 4% |
| Friday Night | 63°F | Slight Chance Showers And Thunderstorms | 7 to 13 mph SW | 19% |
| Saturday | 87°F | Mostly Sunny | 6 to 12 mph SW | 13% |
| Saturday Night | 65°F | Chance Showers And Thunderstorms | 5 to 12 mph WSW | 41% |
| Sunday | 86°F | Chance Showers And Thunderstorms | 6 to 10 mph WNW | 41% |
| Sunday Night | 62°F | Chance Showers And Thunderstorms | 3 to 9 mph NW | 39% |
| Monday | 83°F | Chance Showers And Thunderstorms | 3 to 10 mph S | 31% |
| Monday Night | 62°F | Chance Showers And Thunderstorms | 3 to 10 mph N | 33% |
Forecast source: National Weather Service (api.weather.gov) for Junction City (44.595, -89.770). Updated through the day.
Growing snapshot for Junction City
Last spring frost
May 4
First fall frost
Oct 7
Growing season
155 days
Hardiness zone
4b
More local growing data for Junction City: nearby ZIP 54443 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Almond
Amherst
Amherst Junction
Bancroft
Nelsonville
Park Ridge
Plover
Polonia
Rosholt
Stevens Point
Whiting
Climate data from the nearest NOAA station, Stevens Pt, Wi (10.6 mi from Junction City). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.