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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
82°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 82. South wind around 10 mph. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.

7-day forecast for Hillsdale

WhenTempForecastWindPrecip
This Afternoon 82°F Slight Chance Showers And Thunderstorms 10 mph S 43%
Tonight 64°F Chance Showers And Thunderstorms then Showers And Thunderstorms 5 to 10 mph W 87%
Sunday 71°F Rain Showers Likely 10 to 15 mph NE 74%
Sunday Night 57°F Chance Rain Showers 15 mph NE 43%
Monday 65°F Chance Rain Showers 15 mph NE 54%
Monday Night 51°F Chance Rain Showers 10 to 15 mph NE 42%
Tuesday 64°F Slight Chance Rain Showers 15 mph NE 19%
Tuesday Night 49°F Partly Cloudy 5 to 15 mph NE 7%
Wednesday 67°F Mostly Sunny 10 mph NE 2%
Wednesday Night 51°F Partly Cloudy 5 to 10 mph NE 1%
Thursday 69°F Mostly Sunny 5 to 10 mph NE 5%
Thursday Night 53°F Partly Cloudy 5 mph NE 5%
Friday 72°F Mostly Sunny 5 to 10 mph NE 4%
Friday Night 53°F Partly Cloudy 5 mph E 4%

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

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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 19, 2026.