Frankfort Square, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Frankfort Square, a community in Cook County, Illinois.
This Afternoon
73°F
Chance Rain Showers
A chance of rain showers. Mostly cloudy. High near 73, with temperatures falling to around 70 in the afternoon. South wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 30%.
7-day forecast for Frankfort Square
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Chance Rain Showers | 15 to 20 mph S | 34% |
| Tonight | 60°F | Rain Showers | 15 to 20 mph S | 78% |
| Wednesday | 64°F | Rain Showers Likely then Mostly Cloudy | 15 mph SSW | 56% |
| Wednesday Night | 48°F | Mostly Cloudy | 15 mph SW | 10% |
| Thursday | 58°F | Mostly Cloudy then Slight Chance Rain Showers | 10 to 15 mph WSW | 19% |
| Thursday Night | 43°F | Chance Rain Showers | 5 to 10 mph WNW | 41% |
| Friday | 53°F | Chance Rain Showers | 10 mph N | 28% |
| Friday Night | 36°F | Mostly Cloudy | 5 to 10 mph NNW | 14% |
| Saturday | 52°F | Mostly Sunny | 5 mph WNW | 11% |
| Saturday Night | 34°F | Partly Cloudy | 0 to 5 mph WSW | 5% |
| Sunday | 56°F | Mostly Sunny | 5 to 10 mph W | 12% |
| Sunday Night | 35°F | Mostly Clear | 5 to 10 mph W | 9% |
| Monday | 61°F | Sunny | 5 to 15 mph WSW | 6% |
| Monday Night | 39°F | Mostly Clear | 5 to 10 mph WSW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Frankfort Square (41.522, -87.803). Updated through the day.
Growing snapshot for Frankfort Square
Last spring frost
Apr 23
First fall frost
Oct 20
Growing season
179 days
Hardiness zone
6a
More local growing data for Frankfort Square: nearby ZIP 60487 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Park Forest, Il (9.1 mi from Frankfort Square). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.