Pearl City, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Pearl City, a village in Stephenson County, Illinois.
Overnight
52°F
Chance Rain Showers
A chance of rain showers after 4am. Mostly cloudy. Low around 52, with temperatures rising to around 56 overnight. South wind 10 to 15 mph. Chance of precipitation is 30%.
7-day forecast for Pearl City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Chance Rain Showers | 10 to 15 mph S | 30% |
| Wednesday | 58°F | Chance Rain Showers | 15 mph SW | 44% |
| Wednesday Night | 44°F | Chance Rain Showers | 15 mph SW | 27% |
| Thursday | 54°F | Rain Showers Likely | 10 to 15 mph W | 62% |
| 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% |
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
German Valley
Lake Summerset
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 Nov 4, 2026.