Junction, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Junction, a village in Gallatin County, Illinois.
Overnight
58°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy. Low around 58, with temperatures rising to around 60 overnight. South wind around 9 mph. Chance of precipitation is 60%.
7-day forecast for Junction
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 58°F | Showers And Thunderstorms Likely | 9 mph S | 63% |
| Wednesday | 68°F | Mostly Cloudy | 6 to 10 mph WSW | 12% |
| Wednesday Night | 44°F | Partly Cloudy | 5 mph WSW | 0% |
| Thursday | 68°F | Sunny | 2 to 8 mph WSW | 0% |
| Thursday Night | 44°F | Partly Cloudy | 3 mph W | 0% |
| Friday | 61°F | Partly Sunny | 2 to 12 mph NNW | 0% |
| Friday Night | 36°F | Partly Cloudy | 2 to 8 mph NNW | 0% |
| Saturday | 57°F | Mostly Sunny | 2 to 6 mph NNW | 0% |
| Saturday Night | 32°F | Partly Cloudy | 2 mph NW | 0% |
| Sunday | 61°F | Sunny | 0 to 6 mph NW | 0% |
| Sunday Night | 33°F | Clear | 0 to 3 mph NW | 1% |
| Monday | 64°F | Sunny | 0 to 5 mph WSW | 0% |
| Monday Night | 37°F | Clear | 2 mph SW | 1% |
| Tuesday | 68°F | Sunny | 1 to 6 mph WSW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Junction (37.723, -88.238). Updated through the day.
Growing snapshot for Junction
Last spring frost
Apr 7
First fall frost
Oct 26
Growing season
202 days
Hardiness zone
7a
More local growing data for Junction: nearby ZIP 62954 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Harrisburg, Il (14.1 mi from Junction). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.