Frankfort Square, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Frankfort Square, a community in Cook 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 Square
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 5 to 10 mph SSW | 3% |
| Tonight | 65°F | Mostly Cloudy | 5 mph SSW | 6% |
| Wednesday | 81°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 5 mph SW | 47% |
| Wednesday Night | 65°F | Showers And Thunderstorms | 0 to 5 mph SW | 86% |
| Thursday | 78°F | Showers And Thunderstorms Likely | 5 mph SSE | 86% |
| Thursday Night | 62°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SE | 45% |
| Friday | 82°F | Mostly Sunny | 0 to 5 mph SSW | 6% |
| Friday Night | 63°F | Mostly Clear | 0 to 5 mph SSW | 8% |
| Saturday | 83°F | Mostly Sunny | 5 to 10 mph SSW | 10% |
| Saturday Night | 68°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 15% |
| Sunday | 85°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 | 39% |
| Monday | 85°F | Chance Rain Showers | 5 to 10 mph SW | 39% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 10 mph W | 44% |
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 Aug 4, 2026.