Frankfort, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Frankfort, a village in Will County, Illinois.
Today
84°F
Mostly Sunny
Mostly sunny, with a high near 84. South southwest wind 5 to 10 mph.
7-day forecast for Frankfort
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 5 to 10 mph SSW | 5% |
| Tonight | 66°F | Mostly Cloudy | 5 mph SSW | 8% |
| Wednesday | 81°F | Slight Chance Showers And Thunderstorms | 5 mph SW | 49% |
| Wednesday Night | 65°F | Showers And Thunderstorms | 0 to 5 mph WSW | 86% |
| Thursday | 78°F | Showers And Thunderstorms Likely | 5 mph SSE | 84% |
| Thursday Night | 62°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SSE | 43% |
| Friday | 82°F | Mostly Sunny | 0 to 5 mph S | 5% |
| Friday Night | 64°F | Partly Cloudy | 0 to 5 mph SSW | 9% |
| Saturday | 83°F | Mostly Sunny | 5 to 10 mph SSW | 11% |
| Saturday Night | 68°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 15% |
| Sunday | 86°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 to 15 mph SW | 15% |
| Sunday Night | 70°F | Chance Showers And Thunderstorms | 10 mph SSW | 38% |
| Monday | 85°F | Chance Rain Showers | 5 to 10 mph SSW | 38% |
| Monday Night | 69°F | Chance Showers And Thunderstorms | 10 mph WSW | 43% |
Forecast source: National Weather Service (api.weather.gov) for Frankfort (41.507, -87.871). Updated through the day.
Growing snapshot for Frankfort
Last spring frost
Apr 20
First fall frost
Oct 22
Growing season
184 days
Hardiness zone
6a
More local growing data for Frankfort: nearby ZIP 60448 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Romeoville Wfo, Il (11 mi from Frankfort). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.