Paderborn, IL Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Paderborn, a community in St. Clair County, Illinois.

Overnight

63°F

Clear

Clear, with a low around 63. Wind around 0 mph.

7-day forecast for Paderborn

When	Temp	Forecast	Wind	Precip
Overnight	63°F	Clear	0 mph	0%
Tuesday	86°F	Sunny	0 to 3 mph SE	0%
Tuesday Night	66°F	Mostly Clear	3 mph SE	0%
Wednesday	89°F	Sunny	1 to 5 mph S	5%
Wednesday Night	70°F	Partly Cloudy then Chance Showers And Thunderstorms	6 mph S	54%
Thursday	86°F	Chance Showers And Thunderstorms then Showers And Thunderstorms Likely	5 mph S	67%
Thursday Night	69°F	Chance Showers And Thunderstorms	3 mph S	48%
Friday	86°F	Chance Showers And Thunderstorms	3 mph SW	48%
Friday Night	69°F	Chance Showers And Thunderstorms	2 mph SW	38%
Saturday	88°F	Chance Showers And Thunderstorms	3 mph S	38%
Saturday Night	71°F	Partly Cloudy	5 mph S	9%
Sunday	91°F	Sunny	7 mph S	7%
Sunday Night	72°F	Mostly Clear	7 mph S	5%
Monday	92°F	Sunny	7 mph SW	5%

Forecast source: National Weather Service (api.weather.gov) for Paderborn (38.359, -90.047). Updated through the day.

Growing snapshot for Paderborn

Last spring frost

Apr 12

First fall frost

Oct 20

Growing season

189 days

Hardiness zone

More local growing data for Paderborn: nearby ZIP 62285 weather · frost dates · planting calendar · Illinois frost dates

Nearby towns & communities

Belleville Brooklyn Cahokia Heights Caseyville Darmstadt Dupo East St. Louis Fairmont City Fairview Heights Fayetteville Floraville Freeburg Lebanon Lenzburg Marissa Mascoutah Millstadt New Athens O'Fallon Rentchler Sauget Scott AFB Shiloh Smithton St. Libory Summerfield Swansea Washington Park

All Illinois locations ›

Climate data from the nearest NOAA station, Belleville Siu Rsch, Il (12.4 mi from Paderborn). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.