Quincy, IL Weather & Growing Conditions
Overnight
52°F
Slight Chance Drizzle
A slight chance of drizzle. Mostly cloudy, with a low around 52. Southwest wind around 10 mph, with gusts as high as 21 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Slight Chance Drizzle | 10 mph SW | 12% |
| Wednesday | 56°F | Slight Chance Drizzle | 10 to 14 mph W | 12% |
| Wednesday Night | 45°F | Mostly Cloudy | 9 mph W | 2% |
| Thursday | 57°F | Mostly Cloudy | 7 to 10 mph W | 5% |
| Thursday Night | 45°F | Mostly Cloudy | 8 mph NW | 14% |
| Friday | 53°F | Partly Sunny | 6 to 9 mph N | 3% |
| Friday Night | 35°F | Partly Cloudy | 5 mph N | 0% |
| Saturday | 53°F | Mostly Sunny | 3 mph NW | 0% |
| Saturday Night | 36°F | Mostly Clear | 3 mph W | 0% |
| Sunday | 60°F | Sunny | 6 mph W | 1% |
| Sunday Night | 38°F | Clear | 2 mph W | 0% |
| Monday | 65°F | Sunny | 2 to 7 mph SW | 0% |
| Monday Night | 43°F | Clear | 5 mph SW | 0% |
| Tuesday | 66°F | Sunny | 3 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Quincy, IL
Last spring frost
Apr 8
First fall frost
Oct 30
Growing season
204 days
Hardiness zone
6a
Explore more for Quincy, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Quincy Dam 21, Il (4.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.