Galesburg, IL Weather & Growing Conditions
Today
55°F
Patchy Drizzle
Patchy drizzle. Cloudy, with a high near 55. West southwest wind 12 to 16 mph, with gusts as high as 24 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 55°F | Patchy Drizzle | 12 to 16 mph WSW | 10% |
| Tonight | 45°F | Patchy Drizzle then Mostly Cloudy | 13 mph WSW | 12% |
| Thursday | 53°F | Chance Light Rain | 8 to 14 mph W | 37% |
| Thursday Night | 39°F | Slight Chance Light Rain then Mostly Cloudy | 6 to 9 mph NNW | 18% |
| Friday | 48°F | Mostly Sunny | 6 to 12 mph N | 4% |
| Friday Night | 31°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Saturday | 52°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 33°F | Mostly Clear | 2 mph W | 1% |
| Sunday | 57°F | Sunny | 2 to 8 mph W | 1% |
| Sunday Night | 35°F | Clear | 3 mph W | 1% |
| Monday | 63°F | Sunny | 1 to 9 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 5 mph WSW | 0% |
| Tuesday | 64°F | Sunny | 5 mph NW | 0% |
| Tuesday Night | 41°F | Partly Cloudy | 1 mph N | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Galesburg, IL
Last spring frost
Apr 20
First fall frost
Oct 19
Growing season
180 days
Hardiness zone
5b
Explore more for Galesburg, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Galesburg, Il (1.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.