Hillsdale, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hillsdale, a village in Rock Island County, Illinois.
Overnight
61°F
Mostly Clear
Mostly clear. Low around 61, with temperatures rising to around 63 overnight. South wind around 5 mph.
7-day forecast for Hillsdale
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 61°F | Mostly Clear | 5 mph S | 0% |
| Tuesday | 87°F | Mostly Sunny | 5 to 10 mph SW | 8% |
| Tuesday Night | 67°F | Showers And Thunderstorms Likely | 5 mph NW | 70% |
| Wednesday | 78°F | Showers And Thunderstorms Likely | 5 mph NW | 73% |
| Wednesday Night | 62°F | Showers And Thunderstorms | 5 mph N | 77% |
| Thursday | 79°F | Chance Rain Showers | 5 mph NE | 46% |
| Thursday Night | 61°F | Mostly Clear | 0 to 5 mph E | 11% |
| Friday | 82°F | Mostly Sunny | 0 to 5 mph SE | 5% |
| Friday Night | 64°F | Mostly Clear | 0 to 5 mph S | 8% |
| Saturday | 85°F | Sunny | 5 to 10 mph S | 10% |
| Saturday Night | 70°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 18% |
| Sunday | 87°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 to 15 mph SW | 18% |
| Sunday Night | 70°F | Chance Showers And Thunderstorms | 5 to 10 mph S | 36% |
| Monday | 86°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 36% |
Forecast source: National Weather Service (api.weather.gov) for Hillsdale (41.607, -90.173). Updated through the day.
Growing snapshot for Hillsdale
Last spring frost
Apr 16
First fall frost
Oct 25
Growing season
190 days
Hardiness zone
5b
More local growing data for Hillsdale: nearby ZIP 61257 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Andalusia
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Illinois City
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Milan
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Rock Island
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Taylor Ridge
Climate data from the nearest NOAA station, Le Claire L&D 14, Ia (9.3 mi from Hillsdale). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.