Penfield, IL Weather & Growing Conditions
Overnight
67°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Southeast wind around 6 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 67°F | Slight Chance Showers And Thunderstorms | 6 mph SE | 18% |
| Saturday | 86°F | Showers And Thunderstorms Likely | 7 mph SSE | 58% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 5 mph SSW | 32% |
| Sunday | 78°F | Chance Showers And Thunderstorms | 2 to 10 mph N | 70% |
| Sunday Night | 57°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 12 mph NE | 66% |
| Monday | 67°F | Showers And Thunderstorms Likely | 14 mph ENE | 64% |
| Monday Night | 52°F | Chance Rain Showers | 9 to 13 mph NE | 44% |
| Tuesday | 66°F | Chance Rain Showers | 12 mph NE | 37% |
| Tuesday Night | 52°F | Chance Showers And Thunderstorms then Mostly Cloudy | 6 to 10 mph NNE | 37% |
| Wednesday | 68°F | Partly Sunny | 9 mph NNE | 7% |
| Wednesday Night | 52°F | Mostly Cloudy | 5 to 8 mph NNE | 5% |
| Thursday | 70°F | Partly Sunny | 5 to 8 mph NNE | 3% |
| Thursday Night | 54°F | Partly Cloudy | 3 to 7 mph NNE | 3% |
| Friday | 73°F | Mostly Sunny | 5 to 8 mph NNE | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Penfield, IL
Last spring frost
Apr 21
First fall frost
Oct 18
Growing season
179 days
Hardiness zone
6a
Explore more for Penfield, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Rantoul, Il (10.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.