Paderborn, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Paderborn, a community in St. Clair County, Illinois.
Overnight
72°F
Clear
Clear, with a low around 72. South wind around 3 mph.
7-day forecast for Paderborn
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 72°F | Clear | 3 mph S | 3% |
| Saturday | 97°F | Mostly Sunny | 3 to 7 mph SW | 4% |
| Saturday Night | 72°F | Partly Cloudy | 5 mph SW | 4% |
| Sunday | 93°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph W | 20% |
| Sunday Night | 67°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 7 mph N | 55% |
| Monday | 79°F | Showers And Thunderstorms Likely | 5 to 9 mph N | 62% |
| Monday Night | 59°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 6 to 9 mph N | 62% |
| Tuesday | 71°F | Slight Chance Rain Showers then Partly Sunny | 8 to 12 mph N | 22% |
| Tuesday Night | 54°F | Mostly Cloudy | 5 to 10 mph N | 6% |
| Wednesday | 73°F | Mostly Sunny | 6 to 9 mph N | 1% |
| Wednesday Night | 54°F | Partly Cloudy | 2 to 7 mph N | 0% |
| Thursday | 76°F | Mostly Sunny | 3 to 7 mph N | 1% |
| Thursday Night | 56°F | Partly Cloudy | 2 to 6 mph NE | 4% |
| Friday | 77°F | Mostly Sunny | 2 to 7 mph NE | 6% |
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
7a
More local growing data for Paderborn: nearby ZIP 62285 weather · frost dates · planting calendar · Illinois frost dates
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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 Sep 19, 2026.