Junction, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Junction, a village in Gallatin County, Illinois.
Today
86°F
Sunny
Sunny, with a high near 86. Northeast wind around 3 mph.
7-day forecast for Junction
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Sunny | 3 mph NE | 0% |
| Tonight | 63°F | Mostly Clear | 2 mph NE | 0% |
| Wednesday | 89°F | Sunny | 1 mph SW | 0% |
| Wednesday Night | 68°F | Mostly Clear | 1 mph SSE | 1% |
| Thursday | 89°F | Slight Chance Rain Showers | 1 to 6 mph SSW | 15% |
| Thursday Night | 70°F | Chance Showers And Thunderstorms | 1 to 5 mph S | 39% |
| Friday | 89°F | Chance Showers And Thunderstorms | 2 to 6 mph SSW | 39% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 3 mph SW | 36% |
| Saturday | 89°F | Chance Showers And Thunderstorms | 5 mph SW | 32% |
| Saturday Night | 70°F | Chance Showers And Thunderstorms then Partly Cloudy | 3 mph S | 26% |
| Sunday | 90°F | Sunny | 2 to 7 mph SSW | 10% |
| Sunday Night | 72°F | Mostly Clear | 6 mph SSW | 7% |
| Monday | 92°F | Sunny | 3 to 8 mph SSW | 5% |
| Monday Night | 73°F | Mostly Clear | 6 mph SSW | 9% |
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 Aug 4, 2026.