Galena, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Galena, a city in Jo Daviess County, Illinois.
Overnight
63°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 2am, then showers and thunderstorms likely between 2am and 4am, then patchy fog and occasional showers and thunderstorms. Mostly cloudy, with a low around 63. East wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
7-day forecast for Galena
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Chance Showers And Thunderstorms | 5 to 10 mph E | 90% |
| Saturday | 76°F | Patchy Fog | 5 to 10 mph SE | 96% |
| Saturday Night | 60°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 10 mph E | 82% |
| Sunday | 68°F | Chance Rain Showers then Mostly Cloudy | 10 to 15 mph NE | 46% |
| Sunday Night | 54°F | Chance Rain Showers | 10 to 15 mph NE | 32% |
| Monday | 63°F | Chance Rain Showers | 15 mph NE | 32% |
| Monday Night | 48°F | Slight Chance Rain Showers | 10 to 15 mph NE | 24% |
| Tuesday | 62°F | Slight Chance Rain Showers then Partly Sunny | 10 mph NE | 23% |
| Tuesday Night | 46°F | Partly Cloudy | 5 to 10 mph NE | 4% |
| Wednesday | 65°F | Mostly Sunny | 5 to 10 mph NE | 2% |
| Wednesday Night | 49°F | Partly Cloudy | 0 to 5 mph NE | 2% |
| Thursday | 67°F | Mostly Sunny | 5 mph NE | 5% |
| Thursday Night | 51°F | Partly Cloudy | 0 to 5 mph NE | 4% |
| Friday | 70°F | Mostly Sunny | 0 to 5 mph NE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Galena (42.422, -90.428). Updated through the day.
Growing snapshot for Galena
Last spring frost
Apr 26
First fall frost
Oct 15
Growing season
170 days
Hardiness zone
5a
More local growing data for Galena: nearby ZIP 61036 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Apple Canyon Lake
Apple River
East Dubuque
Elizabeth
Hanover
Menominee
Nora
Scales Mound
Stockton
The Galena Territory
Warren
Climate data from the nearest NOAA station, Galena, Il (1.1 mi from Galena). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.