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Quincy (IL) Weather and Climate: A Comprehensive Guide

The climate in Quincy is marked by big temperature swings throughout the year. Temperatures range from very warm during the warmest months to cold in the cooler months. It receives a reasonable amount of rain/snowfall. Let's now guide you through the climate details for a complete overview.

Average maximum day and minimum night temperature

In Quincy, temperatures differ significantly between summer and winter months. Average daytime temperatures reach a very warm 30°C in July. In January, the coolest month of the year, temperatures drop to a chilly 2°C.

At night, you can expect cooler temperatures, with averages dropping to around -8°C during this month. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

On average, Quincy receives a reasonable amount of rain/snowfall, with an annual precipitation of 983 mm. Quincy can be quite wet during June, receiving approximately 140 mm of precipitation over 12 rainy days.

In contrast January, experiences much drier conditions, with 34 mm of snow/rainfall, spread across 7 snowy/rainy days. For more details, please visit our Quincy Precipitation page.

The mean monthly precipitation over the year, including rain, hail and snow

Forecast for Quincy (IL)

Mon   Dec 23
11°C | 3°C
SW 7 m/s
partly cloudy and no rain

partly cloudy and no rain

Tue   Dec 24
4°C | -1°C
N 4 m/s
overcast and no rain

overcast and no rain

Wed   Dec 25
6°C | 1°C
E 4 m/s
overcast and no rain

overcast and no rain

The best time of year to visit Quincy in the United States of America

Other facts from our historical weather data:
  • When is summer in Quincy?
    The hottest season / summer takes place in June, July, August and September.
  • Which is the warmest month in Quincy?
    July has an average maximum temperature of 30°C and is the warmest month of the year.
  • Which is the coldest month in Quincy?
    The coldest month is January with an average maximum temperature of 2°C.
  • Which is the wettest month in Quincy?
    June tops the wettest month list with 140 mm of rainfall.
  • Which is the driest month in Quincy?
    January is the driest month with 34 mm of precipitation.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.