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
76°F
Occasional Showers And Thunderstorms then Showers And Thunderstorms Likely
Occasional showers and thunderstorms before 11am, then showers and thunderstorms likely between 11am and 2pm, then a chance of showers and thunderstorms between 2pm and 3pm, then showers and thunderstorms. Some of the storms could produce heavy rain. Mostly cloudy, with a high near 76. South wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
7-day forecast for Pearl City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Occasional Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 10 mph S | 81% |
| Tonight | 60°F | Showers And Thunderstorms | 5 to 10 mph NE | 90% |
| Sunday | 68°F | Chance Rain Showers | 10 to 15 mph NE | 51% |
| Sunday Night | 53°F | Chance Rain Showers | 15 mph NE | 32% |
| Monday | 63°F | Chance Rain Showers | 15 mph NE | 44% |
| Monday Night | 48°F | Slight Chance Rain Showers | 10 to 15 mph NE | 23% |
| Tuesday | 62°F | Slight Chance Rain Showers then Partly Sunny | 10 to 15 mph NE | 18% |
| Tuesday Night | 46°F | Partly Cloudy | 5 to 10 mph NE | 7% |
| Wednesday | 65°F | Mostly Sunny | 10 mph NE | 2% |
| Wednesday Night | 48°F | Partly Cloudy | 5 to 10 mph NE | 1% |
| Thursday | 66°F | Mostly Sunny | 5 mph NE | 4% |
| Thursday Night | 50°F | Partly Cloudy | 0 to 5 mph NE | 4% |
| Friday | 70°F | Mostly Sunny | 5 mph NE | 4% |
| Friday Night | 49°F | Partly Cloudy | 0 to 5 mph E | 3% |
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
5a
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
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Lena
Orangeville
Ridott
Rock City
Willow Lake
Winslow
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 Sep 19, 2026.