Hillsdale, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hillsdale, a village in Rock Island County, Illinois.
This Afternoon
80°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy. High near 80, with temperatures falling to around 77 in the afternoon. South wind around 5 mph. Chance of precipitation is 50%.
7-day forecast for Hillsdale
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 80°F | Chance Showers And Thunderstorms | 5 mph S | 49% |
| Tonight | 65°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 to 10 mph SE | 91% |
| Sunday | 69°F | Patchy Fog | 10 to 15 mph NE | 71% |
| Sunday Night | 57°F | Chance Rain Showers | 10 to 15 mph NE | 43% |
| Monday | 64°F | Rain Showers Likely | 15 mph NE | 66% |
| Monday Night | 52°F | Rain Showers Likely | 10 to 15 mph NE | 64% |
| Tuesday | 63°F | Chance Rain Showers | 15 mph NE | 54% |
| Tuesday Night | 50°F | Mostly Cloudy | 5 to 15 mph NE | 9% |
| Wednesday | 65°F | Partly Sunny | 10 mph NE | 4% |
| Wednesday Night | 52°F | Mostly Cloudy | 5 to 10 mph NE | 4% |
| Thursday | 68°F | Partly Sunny | 5 mph NE | 8% |
| Thursday Night | 54°F | Slight Chance Rain Showers | 0 to 5 mph NE | 15% |
| Friday | 71°F | Partly Sunny | 5 mph NE | 8% |
| Friday Night | 54°F | Partly Cloudy | 0 to 5 mph NE | 7% |
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
Barstow
Buffalo Prairie
Carbon Cliff
Coal Valley
Cordova
Coyne Center
East Moline
Edgington
Hampton
Illinois City
Joslin
Milan
Moline
Oak Grove
Port Byron
Rapids City
Rock Island
Silvis
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 Sep 20, 2026.