Manhattan, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Manhattan, a village in Will County, Illinois.
Today
84°F
Mostly Sunny
Mostly sunny, with a high near 84. South wind around 5 mph, with gusts as high as 15 mph.
7-day forecast for Manhattan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 5 mph S | 5% |
| Tonight | 65°F | Mostly Cloudy | 5 mph S | 6% |
| Wednesday | 81°F | Chance Showers And Thunderstorms | 5 mph SW | 46% |
| Wednesday Night | 65°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 0 to 5 mph WSW | 86% |
| Thursday | 78°F | Showers And Thunderstorms Likely | 0 to 5 mph S | 83% |
| Thursday Night | 62°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SSE | 46% |
| Friday | 81°F | Mostly Sunny | 0 to 5 mph S | 5% |
| Friday Night | 64°F | Mostly Clear | 0 mph | 9% |
| Saturday | 83°F | Mostly Sunny | 0 to 5 mph SSW | 11% |
| Saturday Night | 68°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph SSW | 15% |
| Sunday | 86°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 5 to 15 mph SW | 15% |
| Sunday Night | 69°F | Chance Showers And Thunderstorms | 5 to 10 mph SSW | 35% |
| Monday | 85°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 35% |
| Monday Night | 69°F | Chance Showers And Thunderstorms | 10 mph W | 41% |
Forecast source: National Weather Service (api.weather.gov) for Manhattan (41.420, -87.981). Updated through the day.
Growing snapshot for Manhattan
Last spring frost
Apr 19
First fall frost
Oct 25
Growing season
188 days
Hardiness zone
6a
More local growing data for Manhattan: nearby ZIP 60442 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Joliet Brandon Rd Dam, Il (10.7 mi from Manhattan). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.