Warm
Average highs sit around 30°C, giving warm days by monthly-average standards.
Weather Guide
Quincy, Illinois, United States Average Monthly Weather
Weather score51Mixed annual avg
Best months: August, June, July
Across the year, average daytime temperatures are around 17°C, sunshine averages 7h per day, and rainfall totals about 970mm.
Annual weather
Annual averages
Temp
17°C
Rain
970mm
Annual total
Sun
7h
Weather score
51
Mixed avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 92mm, so some wet days are possible.
Bright
Sunshine averages 9h per day, so bright days are a strong part of the month.
Map
Weather map
Compare Quincy, Illinois, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August30°C average high
August is one of Quincy's warmest months, with daytime heat above the yearly average.
Warmest monthsMay to September
This stretch sets the upper range for average daytime heat.
Rain
August92mm average rain
August is wetter than Quincy's yearly average, so flexible plans matter more.
Driest monthsJanuary to February and December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August9 hours average sun
August is brighter than Quincy's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
Weather score
August82 weather score
August is one of Quincy's best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.
