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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, in Quincy, Illinois, is another cold winter month, with an average temperature fluctuating between 32.7°F (0.4°C) and 20.1°F (-6.6°C). January, recording an average high temperature of 32.7°F (0.4°C) and a low temperature of 20.1°F (-6.6°C), is Quincy's coldest month. Weather in January »
Weather in February
February, the last month of the winter in Quincy, is another cold month, with an average temperature ranging between min 24.1°F (-4.4°C) and max 37.6°F (3.1°C). February's presence records an average high-temperature of a still wintry 37.6°F (3.1°C), closely mirroring January's climate. Weather in February »
Weather in March
March, the first month of the spring in Quincy, is a cool month, with an average temperature ranging between max 50.9°F (10.5°C) and min 35.1°F (1.7°C). March's onset witnesses a shift in the average high-temperature, moving from a wintry 37.6°F (3.1°C) in February to a fresh 50.9°F (10.5°C). Weather in March »
Weather in April
April in Quincy, Illinois, is a comfortable spring month, with an average temperature varying between 62.4°F (16.9°C) and 45.1°F (7.3°C). Quincy's transition into April brings a rise in the average high-temperature, moving from a cool 50.9°F (10.5°C) in March to an enjoyable 62.4°F (16.9°C). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in Quincy, Illinois, with an average temperature fluctuating between 72°F (22.2°C) and 55.2°F (12.9°C). With the onset of May, Quincy's weather sees a temperature rise, transitioning from a refreshing 62.4°F (16.9°C) in April to an agreeable 72°F (22.2°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Quincy, Illinois, with an average temperature varying between 64°F (17.8°C) and 81.1°F (27.3°C). In June, the meteorological conditions change with the average high-temperature moving from a pleasant 72°F (22.2°C) in May to a warm 81.1°F (27.3°C). Weather in June »
Weather in July
July, like June, in Quincy, Illinois, is another warm summer month, with an average temperature varying between 66.6°F (19.2°C) and 83.8°F (28.8°C). Quincy witnesses the warmest weather in July, with temperatures averaging a high of 83.8°F (28.8°C) and a low of 66.6°F (19.2°C). July's mean heat index is estimated at a tropical 93.2°F (34°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Quincy, Illinois, with an average temperature ranging between min 64.9°F (18.3°C) and max 82.9°F (28.3°C). The arrival of August sees an average high-temperature of a still warm 82.9°F (28.3°C), hardly diverging from July's 83.8°F (28.8°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Quincy, Illinois, with an average temperature varying between 58.1°F (14.5°C) and 77.5°F (25.3°C). In September, the average high-temperature marginally decreases from 82.9°F (28.3°C) in August to a still moderately hot 77.5°F (25.3°C). Weather in September »
Weather in October
October, the same as September, is another comfortable autumn month in Quincy, Illinois, with temperature in the range of an average low of 46.8°F (8.2°C) and an average high of 63.5°F (17.5°C). The commencement of October indicates a shift in the average high-temperature, receding from September's warm 77.5°F (25.3°C) to a refreshing 63.5°F (17.5°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a fresh month in Quincy, Illinois, with an average temperature fluctuating between 50.2°F (10.1°C) and 35.8°F (2.1°C). A decrease in the average high-temperature is observed during November, shifting from an enjoyable 63.5°F (17.5°C) in October to a cool 50.2°F (10.1°C). Weather in November »
Weather in December
The first month of the winter, December, is still a cold month in Quincy, Illinois, with an average temperature ranging between max 38.5°F (3.6°C) and min 26.8°F (-2.9°C). As November transitions into December, Quincy sees a drop in the average high-temperature, transitioning from a cool 50.2°F (10.1°C) to an icy 38.5°F (3.6°C). Weather in December »
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest in Quincy?
In Quincy, January records the average lowest temperatures, peaking at 32.7°F (0.4°C) and reaching a low of 20.1°F (-6.6°C).
What is the driest month in Quincy?
January and December are months with the least rain in Quincy, Illinois, when the rain falls for 5 days and typically aggregates up to 1.02" (26mm) of rain.
How many days does it rain in Quincy?
In Quincy, during the entire year, the rain falls for 134.2 days and collects up to 23.15" (588mm) of precipitation.
When does it snow in Quincy?
Months with snowfall are January through April, October through December.
When does it snow the most in Quincy?
The month with the most snowfall is January, when snow falls for 8.8 days and typically aggregates up to 2.76" (70mm) of snow.
How many days does it snow in Quincy?
Throughout the year, there are 27.6 snowfall days, and 7.95" (202mm) of snow is accumulated.
What is the month with the least sunshine in Quincy?
With an average of 4.3h of sunshine, January has the least sunshine of the year in Quincy.
What are the months with the lowest UV index in Quincy?
The months with the lowest UV index in Quincy, Illinois, are January, February, November and December, with an average maximum UV index of 2.
When is Daylight Saving Time (DST) in Quincy?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Quincy, Illinois, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
What is the wettest month in Quincy?
May is the month with the most rainfall. Rain falls for 16.9 days and accumulates 3.35" (85mm) of precipitation.
When it does not snow in Quincy?
In Quincy, Illinois, snow does not fall in May through September.
What are the most humid months in Quincy?
June and July, with an average relative humidity of 81%, are most humid months.
When are the longest days in Quincy?
The month with the longest days is June, with an average of 15h and 0min of daylight.
What are the months with the highest UV index in Quincy?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What is the warmest month in Quincy?
Quincy's July weather, marked by an average high temperature of 83.8°F (28.8°C) and an average low temperature of 66.6°F (19.2°C), is the warmest in the year.
What month has the most sunshine in Quincy?
July has the most sunshine of the year, with an average of 10.3h of sunshine.
What is the least humid month in Quincy?
The least humid month in Quincy, Illinois, is October, with an average relative humidity of 71%.
What is the month with the shortest days in Quincy?
The month with the shortest days is December, with an average of 9h and 24min of daylight.
Average temperature
Quincy, IL
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (32.7°F).
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure
Quincy, IL
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.94"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Quincy, IL
- Average wind speed in January:
10.3mph - Average wind speed in February:
10.3mph - Average wind speed in March:
10.1mph - Average wind speed in April:
10.1mph - Average wind speed in May:
8.3mph - Average wind speed in June:
7.5mph
- Average wind speed in July:
6.4mph - Average wind speed in August:
6.5mph - Average wind speed in September:
7.2mph - Average wind speed in October:
9mph - Average wind speed in November:
9.9mph - Average wind speed in December:
9.8mph
The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).
Average humidity
Quincy, IL
The months with the highest relative humidity are June and July (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Quincy, IL
- Average rainfall in January:
1.02" - Average rainfall in February:
1.06" - Average rainfall in March:
1.93" - Average rainfall in April:
2.52" - Average rainfall in May:
3.35" - Average rainfall in June:
2.6"
- Average rainfall in July:
2.01" - Average rainfall in August:
2.01" - Average rainfall in September:
2.4" - Average rainfall in October:
1.85" - Average rainfall in November:
1.38" - Average rainfall in December:
1.02"
The wettest month (with the highest rainfall) is May (3.35").
The driest months (with the least rainfall) are January and December (1.02").
Average rainfall days
Quincy, IL
- Average rainfall days in January:
5 days - Average rainfall days in February:
5.1 days - Average rainfall days in March:
12.9 days - Average rainfall days in April:
14.6 days - Average rainfall days in May:
16.9 days - Average rainfall days in June:
16.1 days
- Average rainfall days in July:
15.3 days - Average rainfall days in August:
13 days - Average rainfall days in September:
10.4 days - Average rainfall days in October:
10.3 days - Average rainfall days in November:
8.8 days - Average rainfall days in December:
5.8 days
The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (5 days).
Average snowfall
Quincy, IL
The month with the highest snowfall is January (2.76").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Quincy, IL
- Average snowfall days in January:
8.8 days - Average snowfall days in February:
6.6 days - Average snowfall days in March:
4.2 days - Average snowfall days in April:
0.8 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.3 days - Average snowfall days in November:
1.4 days - Average snowfall days in December:
5.5 days
The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Quincy, IL
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 2min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January:
4h and 2min - Average sunshine in February:
4h and 3min - Average sunshine in March:
6h and 3min - Average sunshine in April:
8h and 1min - Average sunshine in May:
9h and 0min - Average sunshine in June:
10h and 1min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
10h and 0min - Average sunshine in September:
9h and 2min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days
Quincy, IL
- Average sunshine days in January:
18.1 days - Average sunshine days in February:
16.3 days - Average sunshine days in March:
14.4 days - Average sunshine days in April:
14.5 days - Average sunshine days in May:
12.3 days - Average sunshine days in June:
11.1 days
- Average sunshine days in July:
13.2 days - Average sunshine days in August:
16.3 days - Average sunshine days in September:
18.1 days - Average sunshine days in October:
18.7 days - Average sunshine days in November:
19.1 days - Average sunshine days in December:
19.6 days
The month with the most sunshine days is December (19.6 days).
The month with the least sunshine days is June (11.1 days).
Average UV index
Quincy, IL
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Quincy, IL
The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility
Quincy, IL
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Quincy, Illinois, USA
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