Germantown, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Germantown, a village in Clinton County, Illinois.
This Afternoon
74°F
Rain
Rain and a slight chance of thunderstorms. Cloudy. High near 74, with temperatures falling to around 70 in the afternoon. South wind 18 to 22 mph. Chance of precipitation is 80%.
7-day forecast for Germantown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 74°F | Rain | 18 to 22 mph S | 79% |
| Tonight | 55°F | Rain | 8 to 16 mph S | 96% |
| Wednesday | 65°F | Chance Rain Showers then Mostly Cloudy | 6 to 14 mph W | 12% |
| Wednesday Night | 43°F | Partly Cloudy | 3 mph SW | 0% |
| Thursday | 67°F | Sunny | 3 to 12 mph W | 0% |
| Thursday Night | 43°F | Mostly Cloudy | 3 mph NW | 4% |
| Friday | 59°F | Mostly Cloudy | 5 to 10 mph NW | 6% |
| Friday Night | 38°F | Partly Cloudy | 1 to 6 mph N | 1% |
| Saturday | 56°F | Partly Sunny | 3 mph NW | 0% |
| Saturday Night | 35°F | Partly Cloudy | 0 mph | 0% |
| Sunday | 62°F | Sunny | 0 to 8 mph NW | 7% |
| Sunday Night | 35°F | Mostly Clear | 2 mph NW | 5% |
| Monday | 66°F | Sunny | 1 to 8 mph W | 2% |
| Monday Night | 39°F | Mostly Clear | 3 mph SW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Germantown (38.555, -89.541). Updated through the day.
Growing snapshot for Germantown
Last spring frost
Apr 6
First fall frost
Oct 29
Growing season
204 days
Hardiness zone
6b
More local growing data for Germantown: nearby ZIP 62245 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Albers
Aviston
Bartelso
Beckemeyer
Breese
Carlyle
Damiansville
Hoffman
Huey
New Baden
St. Rose
Trenton
Climate data from the nearest NOAA station, Carlyle Rsvr, Il (13.2 mi from Germantown). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.