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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, the same as December, in Atlanta, Illinois, is a freezing cold winter month, with an average temperature fluctuating between 31.6°F (-0.2°C) and 19.8°F (-6.8°C). The coldest month is January, with an average high-temperature of 31.6°F (-0.2°C) and an average low-temperature of 19.8°F (-6.8°C). Weather in January »
Weather in February
February, the last month of the winter in Atlanta, is an icy month, with an average temperature varying between 36.7°F (2.6°C) and 23.5°F (-4.7°C). The introduction of February sees an average high-temperature of an icy 36.7°F (2.6°C), hardly deviating from January. Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Atlanta, Illinois, with an average temperature fluctuating between 34.7°F (1.5°C) and 49.5°F (9.7°C). As March sets, the average high-temperature shows an increase, moving up from a wintry 36.7°F (2.6°C) in February to a frosty 49.5°F (9.7°C). Weather in March »
Weather in April
April is a comfortable spring month in Atlanta, Illinois, with an average temperature ranging between max 61.3°F (16.3°C) and min 45.1°F (7.3°C). Atlanta's weather in April presents a rise in the average high-temperature, moving from a frosty 49.5°F (9.7°C) in March to a comfortable 61.3°F (16.3°C). Weather in April »
Weather in May
May, the last month of the spring in Atlanta, is a pleasant month, with an average temperature ranging between max 72.1°F (22.3°C) and min 55.8°F (13.2°C). Atlanta's transition into May brings a rise in the average high-temperature, moving from a comfortable 61.3°F (16.3°C) in April to an agreeable 72.1°F (22.3°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Atlanta, Illinois, with an average temperature ranging between min 63.9°F (17.7°C) and max 80.1°F (26.7°C). As Atlanta enters June, the average high-temperature marginally increases from the an agreeable 72.1°F (22.3°C) of May to a moderately hot 80.1°F (26.7°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Atlanta, Illinois, with an average temperature fluctuating between 81.5°F (27.5°C) and 65.1°F (18.4°C). With an average high-temperature of 81.5°F (27.5°C) and an average low-temperature of 65.1°F (18.4°C), July is the warmest month. July's heat index is evaluated at a tropical 89.6°F (32°C). Weather in July »
Weather in August
August, the last month of the summer in Atlanta, is also a moderately hot month, with temperature in the range of an average high of 81.1°F (27.3°C) and an average low of 63.5°F (17.5°C). As Atlanta transitions from July to August, the average high-temperatures adjust to a still moderately hot 81.1°F (27.3°C), nearly the same as the previous 81.5°F (27.5°C). Weather in August »
Weather in September
September, the first month of the autumn in Atlanta, is also a moderately hot month, with an average temperature ranging between max 76.1°F (24.5°C) and min 58.3°F (14.6°C). As Atlanta steps into September, the average high-temperature is measured at a still moderately hot 76.1°F (24.5°C), displaying minor differences from August's 81.1°F (27.3°C). Weather in September »
Weather in October
October, the same as September, is another comfortable autumn month in Atlanta, Illinois, with an average temperature ranging between min 46.9°F (8.3°C) and max 63.3°F (17.4°C). As October arrives, Atlanta's weather displays a decrease in high-temperatures, transitioning from September's moderately hot 76.1°F (24.5°C) to an enjoyable 63.3°F (17.4°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Atlanta, Illinois, with an average temperature varying between 49.1°F (9.5°C) and 35.4°F (1.9°C). November comes with a drop in the average high-temperature, falling from October's enjoyable 63.3°F (17.4°C) to a chilly 49.1°F (9.5°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in Atlanta, Illinois, with temperature in the range of an average low of 27°F (-2.8°C) and an average high of 37.4°F (3°C). Atlanta's December weather features a mild decline in high-temperatures, reducing from a chilly 49.1°F (9.5°C) in November to a wintry 37.4°F (3°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest month in Atlanta?
The coldest period is January, when temperatures fluctuate between an average high of 31.6°F (-0.2°C) and a low of 19.8°F (-6.8°C).
How much does it rain in Atlanta?
Throughout the year, there are 135 rainfall days, and 17.72" (450mm) of precipitation is accumulated.
When does it snow in Atlanta?
Months with snowfall are January through April, November and December.
When does it snow the most in Atlanta?
January is the month with the most snowfall. Snow falls for 9.5 days and accumulates 2.2" (56mm) of snow.
How many days does it snow in Atlanta?
In Atlanta, during the entire year, snow falls for 27.1 days and aggregates up to 7.2" (183mm) of snow.
What is the month with the least sunshine in Atlanta?
With an average of 4h of sunshine, January has the least sunshine of the year in Atlanta, Illinois.
What is the month with the lowest UV index in Atlanta?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Atlanta.
When is Daylight Saving Time (DST) in Atlanta?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Atlanta, 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 Atlanta?
May is the month with the most rainfall. Rain falls for 16.5 days and accumulates 2.2" (56mm) of precipitation.
When it does not snow in Atlanta?
In Atlanta, snow does not fall in May through October.
When are the longest days in Atlanta?
June has the longest days of the year, with an average of 15h and 0min of daylight.
What month has the most sunshine in Atlanta?
The month with the most sunshine in Atlanta is June, with an average of 10.3h of sunshine.
When is the highest UV index in Atlanta?
The months with the highest UV index in Atlanta, Illinois, are June through August, with an average maximum UV index of 6.
What is the warmest month in Atlanta?
The warmest period in Atlanta is July, when temperatures fluctuate between an average high of 81.5°F (27.5°C) and a low of 65.1°F (18.4°C).
What is the most humid month in Atlanta?
The most humid month in Atlanta, Illinois, is July, with an average relative humidity of 85%.
What is the least humid month in Atlanta?
The least humid month in Atlanta, Illinois, is October, with an average relative humidity of 70%.
What is the driest month in Atlanta?
The month with the least rainfall in Atlanta is December, when the rain falls for 7.2 days and typically collects 0.87" (22mm) of precipitation.
What is the month with the shortest days in Atlanta?
The month with the shortest days is December, with an average of 9h and 24min of daylight.
Average temperature
Atlanta, IL
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (31.6°F).
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure
Atlanta, IL
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.95"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:
30.02"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Atlanta, IL
- Average wind speed in January:
10.5mph - Average wind speed in February:
10.5mph - Average wind speed in March:
10.3mph - Average wind speed in April:
10.6mph - Average wind speed in May:
8.9mph - Average wind speed in June:
7.7mph
- 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:
9.3mph - Average wind speed in November:
10mph - Average wind speed in December:
9.9mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity
Atlanta, IL
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (70%).
Average rainfall
Atlanta, IL
- Average rainfall in January:
0.98" - Average rainfall in February:
0.98" - Average rainfall in March:
1.38" - Average rainfall in April:
1.93" - Average rainfall in May:
2.2" - Average rainfall in June:
2.17"
- Average rainfall in July:
1.69" - Average rainfall in August:
1.65" - Average rainfall in September:
1.46" - Average rainfall in October:
1.34" - Average rainfall in November:
1.06" - Average rainfall in December:
0.87"
The wettest month (with the highest rainfall) is May (2.2").
The driest month (with the least rainfall) is December (0.87").
Average rainfall days
Atlanta, IL
- Average rainfall days in January:
6.6 days - Average rainfall days in February:
5.9 days - Average rainfall days in March:
11.8 days - Average rainfall days in April:
14 days - Average rainfall days in May:
16.5 days - Average rainfall days in June:
14.8 days
- Average rainfall days in July:
15.8 days - Average rainfall days in August:
13.3 days - Average rainfall days in September:
11.4 days - Average rainfall days in October:
9.8 days - Average rainfall days in November:
7.9 days - Average rainfall days in December:
7.2 days
The month with the highest number of rainy days is May (16.5 days).
The month with the least rainy days is February (5.9 days).
Average snowfall
Atlanta, IL
The month with the highest snowfall is January (2.2").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Atlanta, IL
- Average snowfall days in January:
9.5 days - Average snowfall days in February:
6.2 days - Average snowfall days in March:
3 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:
0.2 days - Average snowfall days in November:
2.1 days - Average snowfall days in December:
5.3 days
The month with the highest number of snowfall days is January (9.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Atlanta, 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 0min - Average sunshine in February:
4h and 2min - Average sunshine in March:
6h and 3min - Average sunshine in April:
8h and 1min - Average sunshine in May:
9h and 2min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 0min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 1min - Average sunshine in October:
6h and 0min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days
Atlanta, IL
- Average sunshine days in January:
18.8 days - Average sunshine days in February:
16.8 days - Average sunshine days in March:
16.3 days - Average sunshine days in April:
14 days - Average sunshine days in May:
11.6 days - Average sunshine days in June:
12.3 days
- Average sunshine days in July:
11.8 days - Average sunshine days in August:
14.3 days - Average sunshine days in September:
17.1 days - Average sunshine days in October:
19.5 days - Average sunshine days in November:
20 days - Average sunshine days in December:
20 days
The months with the most sunshine days are November and December (20 days).
The month with the least sunshine days is May (11.6 days).
Average UV index
Atlanta, 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
Atlanta, IL
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility
Atlanta, IL
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Atlanta, Illinois, USA
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