Frankfort, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Frankfort, a village in Will County, Illinois.
This Afternoon
73°F
Slight Chance Rain Showers
A slight chance of rain showers. Partly sunny, with a high near 73. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
7-day forecast for Frankfort
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Slight Chance Rain Showers | 10 mph E | 23% |
| Tonight | 63°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 10 mph E | 40% |
| Saturday | 78°F | Showers And Thunderstorms Likely | 5 to 10 mph SE | 80% |
| Saturday Night | 66°F | Showers And Thunderstorms Likely | 5 mph NW | 82% |
| Sunday | 70°F | Showers And Thunderstorms | 10 to 15 mph NNE | 82% |
| Sunday Night | 55°F | Rain Showers Likely | 15 mph NE | 68% |
| Monday | 65°F | Rain Showers Likely | 15 mph ENE | 58% |
| Monday Night | 52°F | Chance Rain Showers | 10 to 15 mph ENE | 33% |
| Tuesday | 64°F | Slight Chance Rain Showers | 10 to 15 mph NE | 24% |
| Tuesday Night | 52°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 15 mph NE | 15% |
| Wednesday | 66°F | Partly Sunny | 5 to 10 mph NNE | 8% |
| Wednesday Night | 52°F | Mostly Cloudy | 5 to 10 mph NNE | 5% |
| Thursday | 69°F | Partly Sunny | 5 to 10 mph NNE | 6% |
| Thursday Night | 53°F | Mostly Cloudy | 5 to 10 mph NNE | 2% |
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 Sep 19, 2026.