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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 Carol Stream, Illinois, with an average temperature varying between 16.7°F (-8.5°C) and 27.9°F (-2.3°C). With average temperatures fluctuating between a high of 27.9°F (-2.3°C) and a low of 16.7°F (-8.5°C), January stands out as the coldest month. Weather in January »
Weather in February
February, the last month of the winter in Carol Stream, is also a subzero cold month, with an average temperature ranging between max 31.8°F (-0.1°C) and min 19.6°F (-6.9°C). At the start of February, Carol Stream's average high-temperature reaches a still subzero cold 31.8°F (-0.1°C), subtly different from the preceding month. Weather in February »
Weather in March
March, the first month of the spring in Carol Stream, is a chilly month, with an average temperature ranging between max 44.8°F (7.1°C) and min 30.7°F (-0.7°C). Carol Stream's transition into March brings a rise in the average high-temperature, moving from a freezing cold 31.8°F (-0.1°C) in February to a frosty 44.8°F (7.1°C). Weather in March »
Weather in April
April in Carol Stream, Illinois, is a moderate spring month, with an average temperature varying between 40.3°F (4.6°C) and 56.1°F (13.4°C). As April arrives, Carol Stream's weather shows an increase in high-temperatures, moving from March's frosty 44.8°F (7.1°C) to a refreshing 56.1°F (13.4°C). Weather in April »
Weather in May
May, the last month of the spring in Carol Stream, is an agreeable month, with temperature in the range of an average high of 68.5°F (20.3°C) and an average low of 51.6°F (10.9°C). May brings an increase in the average high-temperature, progressing from a refreshing 56.1°F (13.4°C) in April to a pleasant 68.5°F (20.3°C). Weather in May »
Weather in June
June, the first month of the summer in Carol Stream, is a warm month, with temperature in the range of an average high of 78.1°F (25.6°C) and an average low of 60.4°F (15.8°C). June sees a temperature increase, moving from an agreeable 68.5°F (20.3°C) in May to a warm 78.1°F (25.6°C). Weather in June »
Weather in July
July, like June, in Carol Stream, Illinois, is a moderately hot summer month, with an average temperature fluctuating between 64.9°F (18.3°C) and 81.5°F (27.5°C). In Carol Stream, July is the month with the highest recorded average temperatures, measuring a high of 81.5°F (27.5°C) and a low of 64.9°F (18.3°C). July's mean heat index is calculated to be a hot 87.8°F (31°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Carol Stream, Illinois, with an average temperature ranging between min 63.7°F (17.6°C) and max 80.2°F (26.8°C). The commencement of August records an average high-temperature of a still warm 80.2°F (26.8°C), barely varying from July's 81.5°F (27.5°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Carol Stream, Illinois, with an average temperature fluctuating between 73.6°F (23.1°C) and 57.2°F (14°C). In September, the average high-temperature marginally drops from 80.2°F (26.8°C) in August to a still warm 73.6°F (23.1°C). Weather in September »
Weather in October
October, like September, is a moderate autumn month in Carol Stream, Illinois, with an average temperature ranging between max 60.4°F (15.8°C) and min 45.3°F (7.4°C). In Carol Stream, the average high-temperature in October drops from a warm 73.6°F (23.1°C) in September to a refreshing 60.4°F (15.8°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in Carol Stream, Illinois, with an average temperature ranging between max 45.5°F (7.5°C) and min 33.1°F (0.6°C). As November arrives, a noticeable drop in the average high-temperature is witnessed, moving from a moderate 60.4°F (15.8°C) in October to a chilly 45.5°F (7.5°C). Weather in November »
Weather in December
The first month of the winter, December, is still a cold month in Carol Stream, Illinois, with temperature in the range of an average high of 34.3°F (1.3°C) and an average low of 24.1°F (-4.4°C). Carol Stream's December weather features a mild decline in high-temperatures, reducing from a chilly 45.5°F (7.5°C) in November to an icy 34.3°F (1.3°C). Weather in December »
Updated: Aug 4, 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 month is the coldest?
January stands out as Carol Stream's coldest month, with an average high-temperature of 27.9°F (-2.3°C) and a low-temperature of 16.7°F (-8.5°C).
What are the most humid months?
January and February, with an average relative humidity of 83%, are most humid months.
How much does it rain?
In Carol Stream, during the entire year, the rain falls for 119.1 days and collects up to 10.83" (275mm) of precipitation.
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 9.3 days and typically aggregates up to 1.5" (38mm) of snow.
How much does it snow?
In Carol Stream, during the entire year, snow falls for 34.4 days and aggregates up to 5.2" (132mm) of snow.
What is the month with the least sunshine?
The month with the least sunshine is January, with an average of 3.7h of sunshine.
What is the month with the lowest UV index?
The months with the lowest UV index are January and December, with an average maximum UV index of 1.
What is the driest month?
February, November and December are months with the least rain when the rain falls for 4.8 days and typically aggregates up to 0.51" (13mm) of rain.
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 14.7 days and typically aggregates up to 1.65" (42mm) of precipitation.
When it does not snow?
May 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?
June through August, with an average maximum UV index of 6, are months with the highest UV index.
What time of the year is the hottest?
The warmest time of the year is July, with temperatures averaging a high of 81.5°F (27.5°C) and a low of 64.9°F (18.3°C).
What is the month with the most sunshine in Carol Stream?
July and August, with an average of 9.9h of sunshine, are months with the most sunshine.
What is the least humid month in Carol Stream?
With an average relative humidity of 74%, October is the least humid month.
What is the month with the shortest days in Carol Stream?
The month with the shortest days in Carol Stream is December, with an average of 9h and 12min of daylight.
Average temperature
Carol Stream, 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 (27.9°F).
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure
Carol Stream, 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
Carol Stream, IL
- Average wind speed in January:
9.8mph - Average wind speed in February:
9.7mph - Average wind speed in March:
9.3mph - Average wind speed in April:
9.6mph - Average wind speed in May:
8.1mph - Average wind speed in June:
7.1mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
6.1mph - Average wind speed in September:
7.1mph - Average wind speed in October:
8.7mph - Average wind speed in November:
9.3mph - Average wind speed in December:
9.1mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity
Carol Stream, IL
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall
Carol Stream, IL
- Average rainfall in January:
0.55" - Average rainfall in February:
0.51" - Average rainfall in March:
0.59" - Average rainfall in April:
1.1" - Average rainfall in May:
1.65" - Average rainfall in June:
1.46"
- Average rainfall in July:
1.26" - Average rainfall in August:
0.94" - Average rainfall in September:
0.83" - Average rainfall in October:
0.91" - Average rainfall in November:
0.51" - Average rainfall in December:
0.51"
The wettest month (with the highest rainfall) is May (1.65").
The driest months (with the least rainfall) are February, November and December (0.51").
Average rainfall days
Carol Stream, IL
- Average rainfall days in January:
4.1 days - Average rainfall days in February:
4.8 days - Average rainfall days in March:
10.3 days - Average rainfall days in April:
12.3 days - Average rainfall days in May:
14.7 days - Average rainfall days in June:
15 days
- Average rainfall days in July:
14.3 days - Average rainfall days in August:
12.1 days - Average rainfall days in September:
10.3 days - Average rainfall days in October:
10 days - Average rainfall days in November:
5.5 days - Average rainfall days in December:
5.7 days
The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is January (4.1 days).
Average snowfall
Carol Stream, IL
The month with the highest snowfall is January (1.5").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Carol Stream, IL
- Average snowfall days in January:
9.3 days - Average snowfall days in February:
8.8 days - Average snowfall days in March:
4.8 days - Average snowfall days in April:
1.2 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:
2.7 days - Average snowfall days in December:
7.1 days
The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Carol Stream, 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 1min - Average sunshine in April:
7h and 4min - Average sunshine in May:
8h and 3min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
9h and 5min - 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: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days
Carol Stream, IL
- Average sunshine days in January:
19.8 days - Average sunshine days in February:
17.9 days - Average sunshine days in March:
17.3 days - Average sunshine days in April:
14.1 days - Average sunshine days in May:
13.2 days - Average sunshine days in June:
11.5 days
- Average sunshine days in July:
11.3 days - Average sunshine days in August:
14.3 days - Average sunshine days in September:
16.6 days - Average sunshine days in October:
19.1 days - Average sunshine days in November:
20.6 days - Average sunshine days in December:
20.5 days
The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (11.3 days).
Average UV index
Carol Stream, 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
Carol Stream, IL
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July, August and September (Cloud cover 32).
Average visibility
Carol Stream, 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).
Carol Stream, Illinois, USA
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