The best times to visit Quincy for ideal weather are

April 23rd to June 10th


September 3rd to October 21st

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.



Other Quincy Travel Info

Weather in Quincy


Average temperatures in Quincy vary an incredible amount. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a low chance of precipitation most of the year. The area is less temperate than some — in the 32nd percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Quincy, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally mid July where highs are regularly around 91°F (32.8°C) with temperatures rarely dropping below 68.7°F (20.4°C) at night.

Quincy Temperatures (Fahrenheit)


Quincy Temperatures (Celsius)


“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Quincy Perceived Temperature (F)


Quincy Perceived Temperature (C)



Average Quincy Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 37.7 26.5 17.2
Feb 37.8 27.4 18.7
Mar 54.2 42.1 32.6
Apr 66.9 54.3 43
May 76.9 65.1 54.6
Jun 84.4 73.4 63.4
Jul 88.9 77.4 66.7
Aug 86.9 75.4 64.8
Sep 80 67.3 56.2
Oct 68.4 55.7 44.3
Nov 54.2 42.8 32.9
Dec 42.2 33.5 25.9

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 3.2 -3.1 -8.2
Feb 3.2 -2.6 -7.4
Mar 12.3 5.6 0.3
Apr 19.4 12.4 6.1
May 24.9 18.4 12.6
Jun 29.1 23 17.4
Jul 31.6 25.2 19.3
Aug 30.5 24.1 18.2
Sep 26.7 19.6 13.4
Oct 20.2 13.2 6.8
Nov 12.3 6 0.5
Dec 5.7 0.8 -3.4



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Quincy are January, August, and then October. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early December. For example, on the week of December 3rd there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in early to mid June with an average of 3 days of significant precipitation the week of June 11th.

When can you find snow in Quincy? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in Quincy.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Quincy (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 9% 0 1.3
Feb 15% 0 1.5
Mar 12% 0 1.3
Apr 23% 0 3.5
May 26% 0 4.4
Jun 28% 0 6.9
Jul 19% 0 3.3
Aug 10% 0 2.6
Sep 17% 0 3
Oct 11% 0 2.6
Nov 13% 0 2.3
Dec 15% 0 2.3

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 9 0 3.3
Feb 15 0 3.8
Mar 12 0 3.3
Apr 23 0 8.9
May 26 0 11.2
Jun 28 0 17.5
Jul 19 0 8.4
Aug 10 0 6.6
Sep 17 0 7.6
Oct 11 0 6.6
Nov 13 0 5.8
Dec 15 0 5.8


Humidity and Wind

Quincy has some high humidity months, with other comfortably humid months. The least humid month is April (51% relative humidity), and the most humid month is December (67.5%).

Wind in Quincy is usually moderate. The windiest month is November, followed by February and January. November’s average wind speed of around 9.2 knots (10.5 MPH or 17 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in mid June where average top sustained speeds reach 17.3 knots, which is considered a fresh breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Quincy.

Avg. Relative Humidity


The graph below shows wind speed (max and average) in knots.

Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 9.1 Gentle breeze 15.8 Significant breeze
Feb 9.1 Gentle breeze 15.4 Significant breeze
Mar 9 Gentle breeze 15.3 Significant breeze
Apr 9.1 Gentle breeze 16.3 Significant breeze
May 8.1 Gentle breeze 14.6 Significant breeze
Jun 7.5 Gentle breeze 15.7 Significant breeze
Jul 5.9 Light breeze 12 Significant breeze
Aug 5.5 Light breeze 11 Significant breeze
Sep 6.6 Light breeze 12.8 Significant breeze
Oct 7.6 Gentle breeze 13.7 Significant breeze
Nov 9.2 Gentle breeze 15.3 Significant breeze
Dec 8.3 Gentle breeze 14.1 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 58.7%
Feb 59%
Mar 55.1%
Apr 51%
May 57.6%
Jun 62.6%
Jul 59.9%
Aug 61.1%
Sep 57.9%
Oct 53%
Nov 56.2%
Dec 67.5%


Is it Safe to Travel to Quincy?

Our best data indicates this area is generally safe. As of Dec 04, 2023 there are no travel advisories or warnings for the United States; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Dec 04, 2023.


The Busiest and Least Crowded Months

The busiest month for tourism in Quincy, IL, US is July, followed by August and February. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Quincy in November. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 41.4 in November means 41.4% of the tourists vs. July.



Overall Quincy Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 80.5°F (26.9°C) and 39.4°F (4.1°C) with far warmer temperatures in the later months. Rain is somewhat common with 4 to 8 days of significant precipitation per month. Spring is fairly slow for tourism, which makes it a good time for those looking for deals.

Summer (June through August)

The middle-year months have very comfortable weather with high temperatures that are quite warm. These months see moderate precipitation with 3 to 8 days of precipitation per month. June – August is the busiest season for tourism in Quincy, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 84.7°F (29.3°C) and 46.6°F (8.1°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 3 to 5 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Winter (December through February)

Weather is far too cold this time of year in Quincy to be enjoyable for warm weather travelers. The average high during this season is between 44.3°F (6.8°C) and 33.9°F (1.1°C). On average, it rains or snows a smalll amount: 3 to 4 times per month. These times of year are the second busiest with tourists.


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