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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, is another subzero cold winter month in Addison, Illinois, with temperature in the range of an average low of 18°F (-7.8°C) and an average high of 28.8°F (-1.8°C). With average high and low temperatures of 28.8°F (-1.8°C) and 18°F (-7.8°C) respectively, January is Addison's coldest month. Weather in January »
Weather in February
The last month of the winter, February, is a wintry month in Addison, Illinois, with an average temperature fluctuating between 20.7°F (-6.3°C) and 32.4°F (0.2°C). Transitioning from January to February, Addison observes an average high-temperature of an icy 32.4°F (0.2°C), differing subtly from the previous month. Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Addison, Illinois, with an average temperature fluctuating between 31.5°F (-0.3°C) and 44.2°F (6.8°C). As Addison enters March, the average high-temperature increases from the a cold 32.4°F (0.2°C) of February to a chilly 44.2°F (6.8°C). Weather in March »
Weather in April
April is a fresh spring month in Addison, Illinois, with an average temperature fluctuating between 55.2°F (12.9°C) and 40.6°F (4.8°C). With the onset of April, Addison sees a temperature rise, with the average high-temperature moving from March's frosty 44.2°F (6.8°C) to a fresh 55.2°F (12.9°C). Weather in April »
Weather in May
May, the last month of the spring in Addison, is a refreshing month, with temperature in the range of an average high of 67.3°F (19.6°C) and an average low of 51.6°F (10.9°C). May's arrival is marked by an increase in the average high-temperature, moving from a fresh 55.2°F (12.9°C) in April to an enjoyable 67.3°F (19.6°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Addison, Illinois, with an average temperature fluctuating between 61.2°F (16.2°C) and 76.8°F (24.9°C). As June arrives, Addison's weather shows an increase in high-temperatures, moving from May's enjoyable 67.3°F (19.6°C) to a warm 76.8°F (24.9°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Addison, Illinois, with an average temperature ranging between max 81.9°F (27.7°C) and min 66.6°F (19.2°C). July is the month when Addison sees the highest average temperatures, with a high of 81.9°F (27.7°C) and a low of 66.6°F (19.2°C). Throughout July, the heat index is evaluated at a tropical 87.8°F (31°C). Weather in July »
Weather in August
August, the last month of the summer in Addison, is also a moderately hot month, with an average temperature fluctuating between 65.7°F (18.7°C) and 80.2°F (26.8°C). The beginning of August reveals an average high-temperature of a still moderately hot 80.2°F (26.8°C), showing minimal deviation from the previous month. Weather in August »
Weather in September
September, the first month of the autumn in Addison, is also a moderately hot month, with an average temperature fluctuating between 73.4°F (23°C) and 58.6°F (14.8°C). The onset of September entails a subtle temperature shift, as the average high-temperature eases from 80.2°F (26.8°C) in August to a still warm 73.4°F (23°C). Weather in September »
Weather in October
October, like September, is a moderate autumn month in Addison, Illinois, with temperature in the range of an average low of 46.6°F (8.1°C) and an average high of 60.4°F (15.8°C). October involves a decrease in temperature, down from a moderately hot 73.4°F (23°C) in September to a moderate 60.4°F (15.8°C). Weather in October »
Weather in November
November, the last month of the autumn in Addison, is also a frosty month, with temperature in the range of an average high of 45.9°F (7.7°C) and an average low of 33.6°F (0.9°C). The transition from October to November brings a clear temperature drop, with average high-temperatures decreasing from a mild 60.4°F (15.8°C) to a frosty 45.9°F (7.7°C). Weather in November »
Weather in December
December, the first month of the winter in Addison, is also a wintry month, with an average temperature varying between 25.2°F (-3.8°C) and 34.7°F (1.5°C). Addison in December demonstrates a small temperature transition, adjusting from an average high of a chilly 45.9°F (7.7°C) in November to a wintry 34.7°F (1.5°C). Weather in December »
Updated: Jul 26, 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 is the coldest time of year?
In Addison, January records the average lowest temperatures, peaking at 28.8°F (-1.8°C) and reaching a low of 18°F (-7.8°C).
What is the most humid month?
January and February, with an average relative humidity of 82%, are most humid months.
How much does it rain?
Throughout the year, there are 149.4 rainfall days, and 25.08" (637mm) of precipitation is accumulated.
When does it snow?
January through May, October through December are months with snowfall.
How much does it snow?
In Addison, during the entire year, snow falls for 45.8 days and aggregates up to 14.25" (362mm) of snow.
What is the month with the least sunshine?
January has the least sunshine of the year in Addison, with an average of 3.7h of sunshine.
When is the lowest UV index?
The months with the lowest UV index are January and December, with an average maximum UV index of 1.
When does it snow the most?
February is the month with the most snowfall. Snow falls for 10.9 days and accumulates 3.86" (98mm) of snow.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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 rainiest month?
The month with the most rainfall is May, when the rain falls for 17.3 days and typically aggregates up to 3.11" (79mm) of precipitation.
When it does not snow?
June through September are months without snowfall.
When are the longest days?
The month with the longest days is June, with an average of 15h and 12min of daylight.
What is the month with the highest UV index in Addison?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What time of the year is the hottest?
In Addison, Illinois, the peak temperatures are generally noted in July, averaging a high of 81.9°F (27.7°C) and a low of 66.6°F (19.2°C).
What are the months with the most sunshine?
July and August, with an average of 10.1h of sunshine, are months with the most sunshine.
What is the least humid month?
With an average relative humidity of 72%, October is the least humid month.
What is the driest month?
December is the month with the least rainfall. Rain falls for 7.9 days and accumulates 1.14" (29mm) of precipitation.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 12min of daylight.
Average temperature
Addison, IL
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (28.8°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 (18°F).
Average pressure
Addison, IL
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Addison, IL
- Average wind speed in January:
10.2mph - Average wind speed in February:
9.9mph - Average wind speed in March:
9.4mph - Average wind speed in April:
9.7mph - Average wind speed in May:
8.3mph - Average wind speed in June:
7.3mph
- Average wind speed in July:
6.5mph - Average wind speed in August:
6.3mph - Average wind speed in September:
7.5mph - Average wind speed in October:
9.1mph - Average wind speed in November:
9.7mph - Average wind speed in December:
9.4mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity
Addison, IL
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Addison, IL
- Average rainfall in January:
1.34" - Average rainfall in February:
1.42" - Average rainfall in March:
1.46" - Average rainfall in April:
2.76" - Average rainfall in May:
3.11" - Average rainfall in June:
2.83"
- Average rainfall in July:
2.87" - Average rainfall in August:
2.83" - Average rainfall in September:
1.89" - Average rainfall in October:
2.17" - Average rainfall in November:
1.26" - Average rainfall in December:
1.14"
The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is December (1.14").
Average rainfall days
Addison, IL
- Average rainfall days in January:
6.3 days - Average rainfall days in February:
5.1 days - Average rainfall days in March:
11.3 days - Average rainfall days in April:
15.8 days - Average rainfall days in May:
17.3 days - Average rainfall days in June:
16.2 days
- Average rainfall days in July:
17.3 days - Average rainfall days in August:
16.6 days - Average rainfall days in September:
13.5 days - Average rainfall days in October:
13 days - Average rainfall days in November:
9.1 days - Average rainfall days in December:
7.9 days
The months with the highest number of rainy days are May and July (17.3 days).
The month with the least rainy days is February (5.1 days).
Average snowfall
Addison, IL
- Average snowfall in January:
3.62" - Average snowfall in February:
3.86" - Average snowfall in March:
1.18" - Average snowfall in April:
2.01" - Average snowfall in May:
0.04" - Average snowfall in June:
0"
The month with the highest snowfall is February (3.86").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Addison, IL
- Average snowfall days in January:
12.4 days - Average snowfall days in February:
10.9 days - Average snowfall days in March:
6.3 days - Average snowfall days in April:
2.3 days - Average snowfall days in May:
0.1 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:
0.4 days - Average snowfall days in November:
3.5 days - Average snowfall days in December:
9.9 days
The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Addison, IL
- Average daylight in January:
9h and 3min - 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 4min - Average daylight in June:
15h and 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
3h and 4min - Average sunshine in February:
3h and 5min - Average sunshine in March:
6h and 0min - Average sunshine in April:
7h and 4min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
10h and 1min - Average sunshine in September:
8h and 5min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 0min - Average sunshine in December:
4h and 1min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days
Addison, IL
- Average sunshine days in January:
14.2 days - Average sunshine days in February:
11.5 days - Average sunshine days in March:
13.8 days - Average sunshine days in April:
11 days - Average sunshine days in May:
10.8 days - Average sunshine days in June:
11.1 days
- Average sunshine days in July:
9.5 days - Average sunshine days in August:
11.3 days - Average sunshine days in September:
13 days - Average sunshine days in October:
14.2 days - Average sunshine days in November:
16.8 days - Average sunshine days in December:
15.3 days
The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is July (9.5 days).
Average UV index
Addison, 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 and December (UV index 1).
Average cloud cover
Addison, IL
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility
Addison, 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).
Addison, Illinois, USA
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