Junction City, WI Weather & Growing Conditions
Today
79°F
Mostly Cloudy
Mostly cloudy, with a high near 79. Heat index values as high as 79. West wind 9 to 13 mph, with gusts as high as 21 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 79°F | Mostly Cloudy | 9 to 13 mph W | 14% |
| Tonight | 57°F | Slight Chance Rain Showers then Mostly Cloudy | 3 to 8 mph WNW | 18% |
| Wednesday | 79°F | Mostly Sunny | 3 to 8 mph NNW | 6% |
| Wednesday Night | 54°F | Partly Cloudy | 1 to 6 mph W | 0% |
| Thursday | 84°F | Mostly Sunny | 1 to 7 mph SW | 0% |
| Thursday Night | 58°F | Mostly Clear | 6 mph S | 0% |
| Friday | 85°F | Sunny | 3 to 14 mph SW | 14% |
| Friday Night | 63°F | Slight Chance Showers And Thunderstorms | 7 to 13 mph SW | 19% |
| Saturday | 86°F | Mostly Sunny | 6 to 12 mph SW | 13% |
| Saturday Night | 65°F | Chance Showers And Thunderstorms | 5 to 12 mph WSW | 41% |
| Sunday | 85°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 9 mph S | 31% |
| Monday Night | 62°F | Chance Showers And Thunderstorms | 5 to 9 mph N | 33% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Junction City, WI
Last spring frost
May 4
First fall frost
Oct 7
Growing season
155 days
Hardiness zone
4b
Explore more for Junction City, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Stevens Pt, Wi (10.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.