Plainfield, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Plainfield, a village in Will County, Illinois.
Today
83°F
Mostly Sunny
Mostly sunny, with a high near 83. South southwest wind 5 to 10 mph.
7-day forecast for Plainfield
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Mostly Sunny | 5 to 10 mph SSW | 0% |
| Tonight | 67°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph SSW | 26% |
| Wednesday | 80°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 mph SW | 66% |
| Wednesday Night | 65°F | Showers And Thunderstorms | 5 mph WNW | 89% |
| Thursday | 79°F | Rain Showers Likely then Chance Showers And Thunderstorms | 5 mph SE | 70% |
| Thursday Night | 62°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SE | 30% |
| Friday | 81°F | Mostly Sunny | 0 to 5 mph S | 6% |
| Friday Night | 64°F | Mostly Clear | 0 to 5 mph S | 9% |
| Saturday | 83°F | Mostly Sunny | 5 to 10 mph SSW | 11% |
| Saturday Night | 68°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 17% |
| Sunday | 85°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 to 15 mph SW | 17% |
| Sunday Night | 69°F | Chance Showers And Thunderstorms | 5 to 10 mph SSW | 36% |
| Monday | 85°F | Chance Rain Showers | 5 to 10 mph SSW | 36% |
| Monday Night | 69°F | Chance Showers And Thunderstorms | 10 mph NW | 43% |
Forecast source: National Weather Service (api.weather.gov) for Plainfield (41.630, -88.245). Updated through the day.
Growing snapshot for Plainfield
Last spring frost
Apr 20
First fall frost
Oct 22
Growing season
184 days
Hardiness zone
5b
More local growing data for Plainfield: nearby ZIP 60544 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Romeoville Wfo, Il (6.9 mi from Plainfield). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.