Preston Heights, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Preston Heights, a community 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 Preston Heights
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 5 to 10 mph SSW | 1% |
| Tonight | 67°F | Mostly Cloudy | 5 mph S | 13% |
| Wednesday | 81°F | Chance Showers And Thunderstorms | 5 mph SW | 54% |
| Wednesday Night | 66°F | Showers And Thunderstorms | 0 to 5 mph W | 89% |
| Thursday | 80°F | Chance Showers And Thunderstorms | 0 to 5 mph SSE | 79% |
| Thursday Night | 63°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SSE | 39% |
| Friday | 83°F | Mostly Sunny | 0 to 5 mph S | 5% |
| Friday Night | 64°F | Mostly Clear | 0 to 5 mph S | 9% |
| Saturday | 85°F | Mostly Sunny | 0 to 5 mph SSW | 11% |
| Saturday Night | 69°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph SSW | 15% |
| Sunday | 87°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 5 to 10 mph SW | 15% |
| Sunday Night | 70°F | Chance Showers And Thunderstorms | 5 to 10 mph SSW | 36% |
| Monday | 86°F | Chance Rain Showers | 5 to 10 mph SSW | 36% |
| Monday Night | 70°F | Chance Showers And Thunderstorms | 5 to 10 mph WNW | 41% |
Forecast source: National Weather Service (api.weather.gov) for Preston Heights (41.495, -88.081). Updated through the day.
Growing snapshot for Preston Heights
Last spring frost
Apr 19
First fall frost
Oct 25
Growing season
188 days
Hardiness zone
6a
More local growing data for Preston Heights: nearby ZIP 60433 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Joliet Brandon Rd Dam, Il (3.2 mi from Preston Heights). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.