Quincy, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Quincy, a city in Adams County, Illinois.
Overnight
52°F
Slight Chance Drizzle
A slight chance of drizzle. Cloudy, with a low around 52. Southwest wind around 10 mph, with gusts as high as 21 mph.
7-day forecast for Quincy
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Slight Chance Drizzle | 10 mph SW | 12% |
| Wednesday | 57°F | Slight Chance Drizzle then Mostly Cloudy | 9 to 14 mph W | 12% |
| Wednesday Night | 45°F | Mostly Cloudy | 8 mph W | 2% |
| Thursday | 57°F | Mostly Cloudy | 7 to 10 mph W | 5% |
| Thursday Night | 46°F | Slight Chance Light Rain then Mostly Cloudy | 8 mph NW | 15% |
| Friday | 53°F | Partly Sunny | 8 mph N | 2% |
| Friday Night | 36°F | Partly Cloudy | 5 mph N | 0% |
| Saturday | 53°F | Mostly Sunny | 3 mph NW | 0% |
| Saturday Night | 37°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 | 67°F | Sunny | 3 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Quincy (39.934, -91.379). Updated through the day.
Growing snapshot for Quincy
Last spring frost
Apr 8
First fall frost
Oct 30
Growing season
204 days
Hardiness zone
6a
More local growing data for Quincy: nearby ZIP 62301 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Adams
Bloomfield
Burton
Camp Point
Clayton
Coatsburg
Columbus
Fall Creek
Fowler
Golden
Kingston
La Prairie
Liberty
Lima
Loraine
Marcelline
Mendon
Paloma
Payson
Plainville
Richfield
Ursa
Climate data from the nearest NOAA station, Quincy Dam 21, Il (2.8 mi from Quincy). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.