Pearl City, IL Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Pearl City, a village in Stephenson County, Illinois.

Today

58°F

Slight Chance Drizzle then Slight Chance Rain Showers

A slight chance of drizzle before noon, then a slight chance of rain showers. Cloudy. High near 58, with temperatures falling to around 54 in the afternoon. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

7-day forecast for Pearl City

When	Temp	Forecast	Wind	Precip
Today	58°F	Slight Chance Drizzle then Slight Chance Rain Showers	15 mph SW	19%
Tonight	45°F	Chance Rain Showers	10 to 15 mph SW	27%
Thursday	51°F	Chance Rain Showers	10 to 15 mph W	37%
Thursday Night	37°F	Mostly Cloudy	10 mph N	13%
Friday	48°F	Partly Sunny	5 to 15 mph N	4%
Friday Night	29°F	Mostly Clear	0 to 5 mph N	0%
Saturday	51°F	Sunny	0 to 5 mph NW	0%
Saturday Night	31°F	Mostly Clear	5 mph W	1%
Sunday	56°F	Sunny	5 to 10 mph W	4%
Sunday Night	33°F	Clear	0 to 5 mph W	0%
Monday	61°F	Sunny	0 to 10 mph SW	0%
Monday Night	37°F	Mostly Clear	5 to 10 mph W	0%
Tuesday	62°F	Sunny	5 mph NW	0%
Tuesday Night	37°F	Partly Cloudy	0 to 5 mph N	0%

Forecast source: National Weather Service (api.weather.gov) for Pearl City (42.266, -89.827). Updated through the day.

Growing snapshot for Pearl City

Last spring frost

Apr 26

First fall frost

Oct 13

Growing season

169 days

Hardiness zone

More local growing data for Pearl City: nearby ZIP 61062 weather · frost dates · planting calendar · Illinois frost dates

Nearby towns & communities

Adeline Cedarville Dakota Davis Freeport German Valley Lake Summerset Lena Orangeville Ridott Rock City Willow Lake Winslow

All Illinois locations ›

Climate data from the nearest NOAA station, Freeport Waste Wtp, Il (12.3 mi from Pearl City). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.