Hillsdale, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hillsdale, a village in Rock Island County, Illinois.
Overnight
52°F
Mostly Cloudy
Mostly cloudy. Low around 52, with temperatures rising to around 55 overnight. South wind around 15 mph.
7-day forecast for Hillsdale
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Mostly Cloudy | 15 mph S | 10% |
| Wednesday | 56°F | Chance Rain Showers | 15 mph SW | 26% |
| Wednesday Night | 46°F | Mostly Cloudy | 15 mph SW | 12% |
| Thursday | 56°F | Chance Rain Showers | 10 to 15 mph W | 37% |
| Thursday Night | 41°F | Slight Chance Rain Showers then Mostly Cloudy | 10 mph NW | 17% |
| Friday | 51°F | Partly Sunny | 5 to 10 mph N | 8% |
| Friday Night | 31°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Saturday | 52°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 34°F | Mostly Clear | 5 mph W | 2% |
| Sunday | 57°F | Sunny | 5 to 10 mph W | 2% |
| Sunday Night | 35°F | Clear | 5 mph W | 1% |
| Monday | 63°F | Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 39°F | Mostly Clear | 5 mph W | 0% |
| Tuesday | 64°F | Sunny | 5 mph NW | 0% |
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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Rapids City
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 Nov 4, 2026.