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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 a freezing cold winter month in Glendale Heights, Illinois, with temperature in the range of an average high of 27.9°F (-2.3°C) and an average low of 16.7°F (-8.5°C). The month of January, characterized by an average high of 27.9°F (-2.3°C) and a low of 16.7°F (-8.5°C), is recognized as the coldest. Weather in January »
Weather in February
February, the last month of the winter in Glendale Heights, is another freezing cold month, with an average temperature varying between 19.6°F (-6.9°C) and 31.8°F (-0.1°C). February ushers in an average high-temperature of a still freezing cold 31.8°F (-0.1°C), aligning closely with the preceding month. Weather in February »
Weather in March
March, the first month of the spring in Glendale Heights, is a chilly month, with an average temperature fluctuating between 44.8°F (7.1°C) and 30.7°F (-0.7°C). Noticing a change, the average high-temperature during March moves from February's freezing cold 31.8°F (-0.1°C) to a chilly 44.8°F (7.1°C). Weather in March »
Weather in April
April is a mild spring month in Glendale Heights, Illinois, with an average temperature fluctuating between 40.3°F (4.6°C) and 56.1°F (13.4°C). Glendale Heights sees an increase in average high-temperatures during April, moving from a frosty 44.8°F (7.1°C) in March to a mild 56.1°F (13.4°C). Weather in April »
Weather in May
The last month of the spring, May, is an agreeable month in Glendale Heights, Illinois, with an average temperature fluctuating between 68.5°F (20.3°C) and 51.6°F (10.9°C). As April transitions into May, Glendale Heights sees a rise in the average high-temperature, moving from a mild 56.1°F (13.4°C) to an agreeable 68.5°F (20.3°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Glendale Heights, Illinois, with an average temperature fluctuating between 60.4°F (15.8°C) and 78.1°F (25.6°C). In June, the meteorological conditions change with the average high-temperature moving from a pleasant 68.5°F (20.3°C) in May to a moderately hot 78.1°F (25.6°C). Weather in June »
Weather in July
July, like June, in Glendale Heights, Illinois, is another warm summer month, with temperature in the range of an average low of 64.9°F (18.3°C) and an average high of 81.5°F (27.5°C). In Glendale Heights, 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). The average heat index in July is appraised at a hot 87.8°F (31°C). Weather in July »
Weather in August
August, the last month of the summer in Glendale Heights, is also a moderately hot month, with an average temperature varying between 63.7°F (17.6°C) and 80.2°F (26.8°C). Glendale Heights experiences a subtle adjustment in high-temperatures to a still warm 80.2°F (26.8°C) with the onset of August, maintaining near parity with July's 81.5°F (27.5°C). Weather in August »
Weather in September
September, the first month of the autumn in Glendale Heights, is also a moderately hot month, with an average temperature ranging between max 73.6°F (23.1°C) and min 57.2°F (14°C). A mild shift in the average high-temperature occurs in September, reducing from a warm 80.2°F (26.8°C) in August to a still moderately hot 73.6°F (23.1°C). Weather in September »
Weather in October
October, like September, is another refreshing autumn month in Glendale Heights, Illinois, with an average temperature varying between 60.4°F (15.8°C) and 45.3°F (7.4°C). With the onset of October, Glendale Heights experiences a modest temperature adjustment, with the average high-temperature receding from a moderately hot 73.6°F (23.1°C) in September to a mild 60.4°F (15.8°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Glendale Heights, Illinois, with temperature in the range of an average high of 45.5°F (7.5°C) and an average low of 33.1°F (0.6°C). Glendale Heights in November sees a clear temperature decline, with average high-temperatures decreasing from a mild 60.4°F (15.8°C) in October to a chilly 45.5°F (7.5°C). Weather in November »
Weather in December
December, the first month of the winter in Glendale Heights, is also a wintry month, with an average temperature varying between 34.3°F (1.3°C) and 24.1°F (-4.4°C). Glendale Heights's weather changes with the onset of December, slightly falling from a chilly 45.5°F (7.5°C) in November to a wintry 34.3°F (1.3°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest month in Glendale Heights?
With an average high-temperature of 27.9°F (-2.3°C) and an average low-temperature of 16.7°F (-8.5°C), January is the coldest month.
What is the most humid month in Glendale Heights?
January and February, with an average relative humidity of 83%, are most humid months in Glendale Heights, Illinois.
How many days does it rain in Glendale Heights?
In Glendale Heights, during the entire year, the rain falls for 119.1 days and collects up to 10.83" (275mm) of precipitation.
When does it snow in Glendale Heights?
Months with snowfall in Glendale Heights, Illinois, are January through April, October through December.
When does it snow the most in Glendale Heights?
The month with the most snowfall in Glendale Heights, Illinois, 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 Glendale Heights?
Throughout the year, in Glendale Heights, there are 34.4 snowfall days, and 5.2" (132mm) of snow is accumulated.
What is the month with the least sunshine in Glendale Heights?
January has the least sunshine of the year, with an average of 3.7h of sunshine.
What are the months with the lowest UV index in Glendale Heights?
January and December, with an average maximum UV index of 1, are months with the lowest UV index.
What is the driest month in Glendale Heights?
February, November and December are months with the least rain in Glendale Heights when the rain falls for 4.8 days and typically aggregates up to 0.51" (13mm) of rain.
When is Daylight Saving Time (DST) in Glendale Heights?
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 in Glendale Heights?
May is the month with the most rainfall. Rain falls for 14.7 days and accumulates 1.65" (42mm) of precipitation.
When it does not snow in Glendale Heights?
In Glendale Heights, snow does not fall in May through September.
When are the longest days in Glendale Heights?
The month with the longest days in Glendale Heights is June, with an average of 15h and 12min of daylight.
What are the months with the highest UV index in Glendale Heights?
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 Glendale Heights?
July stands out as Glendale Heights's warmest month, with temperatures ranging between an average 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 Glendale Heights?
July and August, with an average of 9.9h of sunshine, are months with the most sunshine in Glendale Heights.
What is the least humid month in Glendale Heights?
October is the least humid month in Glendale Heights, Illinois, with an average relative humidity of 74%.
What is the month with the shortest days in Glendale Heights?
December has the shortest days of the year, with an average of 9h and 12min of daylight.
Average temperature
Glendale Heights, 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
Glendale Heights, 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
Glendale Heights, 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
Glendale Heights, 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
Glendale Heights, 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
Glendale Heights, 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
Glendale Heights, 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
Glendale Heights, 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
Glendale Heights, 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
Glendale Heights, 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
Glendale Heights, 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
Glendale Heights, 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
Glendale Heights, 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).
Glendale Heights, Illinois, USA
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