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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 Bannockburn, Illinois, is another subzero cold winter month, with an average temperature varying between 28.6°F (-1.9°C) and 18.9°F (-7.3°C). January, marked by an average high-temperature of 28.6°F (-1.9°C) and a low-temperature of 18.9°F (-7.3°C), is the coldest month. Weather in January »
Weather in February
February, the last month of the winter in Bannockburn, is another freezing cold month, with an average temperature varying between 21.6°F (-5.8°C) and 31.3°F (-0.4°C). The onset of February manifests an average high-temperature of a still subzero cold 31.3°F (-0.4°C), demonstrating a minor variation from the preceding month. Weather in February »
Weather in March
March, the first month of the spring in Bannockburn, is a cold month, with temperature in the range of an average high of 41.5°F (5.3°C) and an average low of 31.5°F (-0.3°C). As Bannockburn, Illinois, enters March, the average high-temperature increases from the a freezing cold 31.3°F (-0.4°C) of February to a wintry 41.5°F (5.3°C). Weather in March »
Weather in April
April in Bannockburn, Illinois, is a cool spring month, with an average temperature varying between 39.7°F (4.3°C) and 50.9°F (10.5°C). With the beginning of April, Bannockburn's average high-temperature sees an increase, transitioning from an icy 41.5°F (5.3°C) in March to a cool 50.9°F (10.5°C). Weather in April »
Weather in May
May, the last month of the spring in Bannockburn, is an enjoyable month, with an average temperature varying between 61.2°F (16.2°C) and 49.6°F (9.8°C). May brings a temperature change, with average high-temperatures moving from April's cool 50.9°F (10.5°C) to an enjoyable 61.2°F (16.2°C). Weather in May »
Weather in June
The first month of the summer, June, is a pleasant month in Bannockburn, Illinois, with temperature in the range of an average high of 71.1°F (21.7°C) and an average low of 59.4°F (15.2°C). June brings a temperature change, with average high-temperatures moving from May's comfortable 61.2°F (16.2°C) to an agreeable 71.1°F (21.7°C). Weather in June »
Weather in July
July is a moderately hot summer month in Bannockburn, Illinois, with temperature in the range of an average high of 77.7°F (25.4°C) and an average low of 66.7°F (19.3°C). July, with an average high of 77.7°F (25.4°C) and a low of 66.7°F (19.3°C), signifies the warmest month of the year. Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Bannockburn, Illinois, with an average temperature fluctuating between 66.7°F (19.3°C) and 77.5°F (25.3°C). With August's arrival, Bannockburn's weather records an average high-temperature of a still warm 77.5°F (25.3°C), marking little difference from July's 77.7°F (25.4°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a pleasant month in Bannockburn, Illinois, with temperature in the range of an average low of 60.1°F (15.6°C) and an average high of 71.2°F (21.8°C). September signifies a minor drop in average high-temperature, transitioning from a moderately hot 77.5°F (25.3°C) in August to a pleasant 71.2°F (21.8°C). Weather in September »
Weather in October
October, the same as September, in Bannockburn, Illinois, is a moderate autumn month, with an average temperature ranging between min 47.7°F (8.7°C) and max 58.6°F (14.8°C). Bannockburn's progression into October includes a drop in the average high-temperature, from an agreeable 71.2°F (21.8°C) in September to a moderate 58.6°F (14.8°C). Weather in October »
Weather in November
November, the last month of the autumn in Bannockburn, is also a frosty month, with temperature in the range of an average low of 35.1°F (1.7°C) and an average high of 45.5°F (7.5°C). The arrival of November corresponds with a temperature reduction, down from October's moderate 58.6°F (14.8°C) to a chilly 45.5°F (7.5°C). Weather in November »
Weather in December
December, the first month of the winter in Bannockburn, is also a wintry month, with an average temperature fluctuating between 26.2°F (-3.2°C) and 34.5°F (1.4°C). The start of December comes with a reduction in the average high-temperature, receding from a frosty 45.5°F (7.5°C) in November to an icy 34.5°F (1.4°C). Weather in December »
Updated: Jun 18, 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 Bannockburn?
With its average high temperature of 28.6°F (-1.9°C) and a low of 18.9°F (-7.3°C), January is regarded as the coldest month.
What are the most humid months?
The months with the highest humidity are January and February, with an average relative humidity of 82%.
How many days does it rain?
Throughout the year, there are 154.1 rainfall days, and 30.24" (768mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through April, October through December.
What is the snowiest month?
The month with the most snowfall is January, when snow falls for 11.9 days and typically aggregates up to 4.13" (105mm) of snow.
How many days does it snow?
In Bannockburn, during the entire year, snow falls for 42.9 days and aggregates up to 13.82" (351mm) of snow.
What is the month with the least sunshine?
January has the least sunshine of the year, with an average of 3.8h of sunshine.
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 wettest month?
The months with the most rainfall are May and June, with an average 3.82" (97mm) of precipitation.
When it does not snow?
In Bannockburn, snow does not fall in May through September.
When are the longest days?
With an average of 15h and 12min of daylight, June has the longest days of the year.
What are the months with the highest UV index?
June through August, with an average maximum UV index of 6, are months with the highest UV index in Bannockburn.
What month is the hottest in Bannockburn?
Bannockburn experiences its average highest temperatures in July, reaching a peak of 77.7°F (25.4°C) and a minimum of 66.7°F (19.3°C).
What month has the most sunshine?
With an average of 10.7h of sunshine, August has the most sunshine of the year.
What is the least humid month?
The least humid month is October, with an average relative humidity of 73%.
What is the driest month?
December is the month with the least rainfall. Rain falls for 8.6 days and accumulates 1.3" (33mm) of precipitation.
What is the month with the shortest days?
With an average of 9h and 12min of daylight, December has the shortest days of the year.
When is the lowest UV index?
December is the month with the lowest UV index in Bannockburn, with an average maximum UV index of 1.
Average temperature
Bannockburn, IL
The warmest month (with the highest average high temperature) is July (77.7°F).
The month with the lowest average high temperature is January (28.6°F).
The months with the highest average low temperature are July and August (66.7°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure
Bannockburn, IL
- Average pressure in January:
30.1"Hg - Average pressure in February:
30.09"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"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Bannockburn, IL
- Average wind speed in January:
11.9mph - Average wind speed in February:
11.6mph - Average wind speed in March:
10.7mph - Average wind speed in April:
10.8mph - Average wind speed in May:
9.1mph - Average wind speed in June:
8.1mph
- Average wind speed in July:
7.5mph - Average wind speed in August:
7.4mph - Average wind speed in September:
8.9mph - Average wind speed in October:
10.7mph - Average wind speed in November:
11.5mph - Average wind speed in December:
11.2mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (7.4mph).
Average humidity
Bannockburn, IL
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall
Bannockburn, IL
- Average rainfall in January:
1.54" - Average rainfall in February:
1.54" - Average rainfall in March:
1.77" - Average rainfall in April:
3.43" - Average rainfall in May:
3.82" - Average rainfall in June:
3.82"
The wettest months (with the highest rainfall) are May and June (3.82").
The driest month (with the least rainfall) is December (1.3").
Average rainfall days
Bannockburn, IL
- Average rainfall days in January:
6.2 days - Average rainfall days in February:
5.9 days - Average rainfall days in March:
11.3 days - Average rainfall days in April:
16.1 days - Average rainfall days in May:
17.7 days - Average rainfall days in June:
16.6 days
- Average rainfall days in July:
17.4 days - Average rainfall days in August:
15.8 days - Average rainfall days in September:
13.6 days - Average rainfall days in October:
14.7 days - Average rainfall days in November:
10.2 days - Average rainfall days in December:
8.6 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is February (5.9 days).
Average snowfall
Bannockburn, IL
The month with the highest snowfall is January (4.13").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Bannockburn, IL
- Average snowfall days in January:
11.9 days - Average snowfall days in February:
9.5 days - Average snowfall days in March:
5.8 days - Average snowfall days in April:
2.4 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:
0.5 days - Average snowfall days in November:
3.7 days - Average snowfall days in December:
9.1 days
The month with the highest number of snowfall days is January (11.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Bannockburn, 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 5min - Average sunshine in February:
3h and 5min - Average sunshine in March:
6h and 1min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 5min - Average sunshine in June:
10h and 0min
- Average sunshine in July:
10h and 4min - Average sunshine in August:
10h and 4min - Average sunshine in September:
9h and 1min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Bannockburn, IL
- Average sunshine days in January:
12.8 days - Average sunshine days in February:
12.3 days - Average sunshine days in March:
14 days - Average sunshine days in April:
10.8 days - Average sunshine days in May:
11.2 days - Average sunshine days in June:
11.2 days
- Average sunshine days in July:
11.5 days - Average sunshine days in August:
13.1 days - Average sunshine days in September:
13.3 days - Average sunshine days in October:
13.6 days - Average sunshine days in November:
14.7 days - Average sunshine days in December:
15.3 days
The month with the most sunshine days is December (15.3 days).
The month with the least sunshine days is April (10.8 days).
Average UV index
Bannockburn, IL
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Bannockburn, IL
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July and August (Cloud cover 27).
Average visibility
Bannockburn, 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).
Bannockburn, Illinois, USA
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