Manhattan, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Manhattan, a village in Will County, Illinois.
This Afternoon
74°F
Rain Showers Likely
Rain showers likely. Partly sunny, with a high near 74. East northeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
7-day forecast for Manhattan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 74°F | Rain Showers Likely | 10 mph ENE | 56% |
| Tonight | 63°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 10 mph ESE | 37% |
| Saturday | 79°F | Showers And Thunderstorms Likely | 5 to 10 mph SE | 76% |
| Saturday Night | 67°F | Showers And Thunderstorms Likely | 5 mph S | 81% |
| Sunday | 71°F | Showers And Thunderstorms | 5 to 15 mph NNE | 81% |
| Sunday Night | 56°F | Rain Showers Likely | 15 mph NE | 71% |
| Monday | 66°F | Showers And Thunderstorms Likely | 15 mph ENE | 59% |
| Monday Night | 52°F | Chance Rain Showers | 10 to 15 mph NE | 34% |
| Tuesday | 64°F | Chance Rain Showers | 10 to 15 mph NE | 25% |
| Tuesday Night | 52°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 16% |
| Wednesday | 67°F | Partly Sunny | 5 to 10 mph NNE | 6% |
| Wednesday Night | 52°F | Mostly Cloudy | 5 to 10 mph NNE | 5% |
| Thursday | 69°F | Partly Sunny | 5 to 10 mph NNE | 5% |
| Thursday Night | 54°F | Mostly Cloudy | 5 mph NNE | 2% |
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 Sep 18, 2026.