Franklin Grove, IL Weather & Growing Conditions
Today
84°F
Mostly Sunny
Mostly sunny, with a high near 84. South southwest wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 5 to 10 mph SSW | 2% |
| Tonight | 66°F | Chance Showers And Thunderstorms | 0 to 10 mph SSW | 67% |
| Wednesday | 77°F | Showers And Thunderstorms Likely | 0 to 5 mph WSW | 74% |
| Wednesday Night | 62°F | Showers And Thunderstorms | 0 to 5 mph NNE | 81% |
| Thursday | 78°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 0 to 5 mph ENE | 47% |
| Thursday Night | 60°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph ESE | 16% |
| Friday | 81°F | Mostly Sunny | 0 to 5 mph SSE | 11% |
| Friday Night | 63°F | Mostly Clear | 0 to 5 mph S | 11% |
| Saturday | 84°F | Sunny | 5 to 10 mph SSW | 9% |
| Saturday Night | 68°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 18% |
| Sunday | 86°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 to 15 mph SSW | 18% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms | 5 to 10 mph S | 37% |
| Monday | 85°F | Chance Showers And Thunderstorms | 5 to 10 mph SSW | 34% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 10 mph WNW | 41% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Franklin Grove, IL
Last spring frost
Apr 21
First fall frost
Oct 19
Growing season
180 days
Hardiness zone
5b
Explore more for Franklin Grove, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Dixon 1W, Il (9.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.