Harvey, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Harvey, a city in Cook County, Illinois.
Today
85°F
Mostly Sunny
Mostly sunny, with a high near 85. South southwest wind 5 to 10 mph.
7-day forecast for Harvey
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 5 to 10 mph SSW | 2% |
| Tonight | 68°F | Partly Cloudy | 5 mph SSW | 7% |
| Wednesday | 82°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 5 mph SSW | 50% |
| Wednesday Night | 66°F | Showers And Thunderstorms | 5 mph WSW | 87% |
| Thursday | 78°F | Rain Showers then Chance Showers And Thunderstorms | 5 mph S | 87% |
| Thursday Night | 64°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SE | 41% |
| Friday | 82°F | Mostly Sunny | 0 to 5 mph SSW | 6% |
| Friday Night | 65°F | Partly Cloudy | 0 to 5 mph S | 8% |
| Saturday | 84°F | Mostly Sunny | 0 to 5 mph SSW | 10% |
| Saturday Night | 70°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph SSW | 16% |
| Sunday | 86°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 5 to 10 mph SW | 16% |
| Sunday Night | 71°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 41% |
| Monday | 86°F | Chance Rain Showers | 5 to 10 mph SW | 41% |
| Monday Night | 70°F | Chance Showers And Thunderstorms | 5 to 10 mph WSW | 47% |
Forecast source: National Weather Service (api.weather.gov) for Harvey (41.608, -87.652). Updated through the day.
Growing snapshot for Harvey
Last spring frost
Apr 23
First fall frost
Oct 20
Growing season
179 days
Hardiness zone
6a
More local growing data for Harvey: nearby ZIP 60426 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Alsip
Arbury Hills
Arlington Heights
Barrington
Barrington Hills
Bedford Park
Bellwood
Berkeley
Berwyn
Blue Island
Bridgeview
Broadview
Brookfield
Burbank
Burnham
Calumet City
Calumet Park
Chicago
Chicago Heights
Chicago Ridge
Cicero
Country Club Hills
Countryside
Crestwood
Crete
Des Plaines
Dixmoor
Dolton
East Hazel Crest
Elk Grove Village
Climate data from the nearest NOAA station, Park Forest, Il (8.1 mi from Harvey). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.