Germantown, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Germantown, a village in Clinton County, Illinois.
Overnight
56°F
Chance Light Rain
A chance of rain before 4am, then a slight chance of drizzle between 4am and 5am, then a slight chance of rain. Mostly cloudy, with a low around 56. Southwest wind 8 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.
7-day forecast for Germantown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 56°F | Chance Light Rain | 8 to 13 mph SW | 43% |
| Wednesday | 64°F | Slight Chance Drizzle then Mostly Cloudy | 7 to 14 mph W | 13% |
| Wednesday Night | 43°F | Partly Cloudy | 5 mph SW | 0% |
| Thursday | 66°F | Sunny | 5 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% |
| Tuesday | 69°F | Sunny | 5 mph W | 1% |
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.