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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 South Chicago Heights, Illinois, with temperature in the range of an average low of 18.9°F (-7.3°C) and an average high of 29.7°F (-1.3°C). January, with an average high of 29.7°F (-1.3°C) and a low of 18.9°F (-7.3°C), signifies the coldest month of the year. Weather in January »
Weather in February
February, the last month of the winter in South Chicago Heights, is a wintry month, with temperature in the range of an average high of 33.4°F (0.8°C) and an average low of 21.2°F (-6°C). The shift into February records an average high-temperature of a cold 33.4°F (0.8°C), subtly varied from January's 29.7°F (-1.3°C). Weather in February »
Weather in March
March, the first month of the spring in South Chicago Heights, is a chilly month, with an average temperature fluctuating between 46°F (7.8°C) and 32.4°F (0.2°C). With the onset of March, South Chicago Heights's average high-temperature sees a rise, moving from February's wintry 33.4°F (0.8°C) to a frosty 46°F (7.8°C). Weather in March »
Weather in April
April in South Chicago Heights, Illinois, is a mild spring month, with temperature in the range of an average high of 57.4°F (14.1°C) and an average low of 42.1°F (5.6°C). April brings a temperature increase, with average high-temperatures moving from March's chilly 46°F (7.8°C) to a moderate 57.4°F (14.1°C). Weather in April »
Weather in May
May, the last month of the spring in South Chicago Heights, is an agreeable month, with an average temperature varying between 69.8°F (21°C) and 53.1°F (11.7°C). The shift from April to May sees an increase in the average high-temperature, transitioning from a moderate 57.4°F (14.1°C) to a pleasant 69.8°F (21°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in South Chicago Heights, Illinois, with an average temperature varying between 78.6°F (25.9°C) and 61.5°F (16.4°C). June sees a marginal temperature increase, moving from a pleasant 69.8°F (21°C) in May to a moderately hot 78.6°F (25.9°C). Weather in June »
Weather in July
July, like June, in South Chicago Heights, Illinois, is another warm summer month, with an average temperature ranging between max 82°F (27.8°C) and min 65.7°F (18.7°C). July temperatures tend to peak at an average high of 82°F (27.8°C) and dip to a low of 65.7°F (18.7°C). During July, the heat index is computed to be a hot 89.6°F (32°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in South Chicago Heights, Illinois, with temperature in the range of an average low of 64°F (17.8°C) and an average high of 80.4°F (26.9°C). The advent of August presents an average high-temperature of a still warm 80.4°F (26.9°C), maintaining a close correlation with the preceding month. Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in South Chicago Heights, Illinois, with an average temperature varying between 57.6°F (14.2°C) and 74.5°F (23.6°C). September is characterized by a slight reduction in average high-temperature, easing from 80.4°F (26.9°C) in August to a still warm 74.5°F (23.6°C). Weather in September »
Weather in October
October, the same as September, is another refreshing autumn month in South Chicago Heights, Illinois, with temperature in the range of an average low of 46.6°F (8.1°C) and an average high of 61.3°F (16.3°C). Start of October brings a shift in the average high-temperature, falling from September's moderately hot 74.5°F (23.6°C) to an enjoyable 61.3°F (16.3°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in South Chicago Heights, Illinois, with temperature in the range of an average high of 47.1°F (8.4°C) and an average low of 34.7°F (1.5°C). The start of November involves a temperature drop, moving from a refreshing 61.3°F (16.3°C) in October to a frosty 47.1°F (8.4°C). Weather in November »
Weather in December
December, the first month of the winter in South Chicago Heights, is still a cold month, with an average temperature fluctuating between 35.6°F (2°C) and 25.9°F (-3.4°C). Arrival of December comes with a reduction in the average high-temperature, falling from a chilly 47.1°F (8.4°C) in November to a cold 35.6°F (2°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest time of year in South Chicago Heights?
South Chicago Heights reaches its average lowest temperatures in January, measuring 29.7°F (-1.3°C) at the peak and 18.9°F (-7.3°C) at the lowest.
How much does it rain in South Chicago Heights?
Throughout the year, in South Chicago Heights, there are 167.4 rainfall days, and 35" (889mm) of precipitation is accumulated.
When does it snow in South Chicago Heights?
January through April, October through December are months with snowfall.
How much does it snow in South Chicago Heights?
Throughout the year, there are 47.8 snowfall days, and 20.04" (509mm) of snow is accumulated.
What is the month with the least sunshine in South Chicago Heights?
The month with the least sunshine in South Chicago Heights is January, with an average of 3.6h of sunshine.
What is the most humid month in South Chicago Heights?
With an average relative humidity of 83%, February is the most humid month in South Chicago Heights.
What is the snowiest month in South Chicago Heights?
The month with the most snowfall in South Chicago Heights is February, when snow falls for 11.8 days and typically aggregates up to 5.35" (136mm) of snow.
When is Daylight Saving Time (DST) in South Chicago Heights?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in South Chicago Heights, 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 South Chicago Heights?
May is the month with the most rainfall. Rain falls for 19.6 days and accumulates 4.53" (115mm) of precipitation.
When it does not snow in South Chicago Heights?
May through September are months without snowfall.
When are the longest days in South Chicago Heights?
The month with the longest days in South Chicago Heights is June, with an average of 15h and 6min of daylight.
When is the highest UV index in South Chicago Heights?
The months with the highest UV index in South Chicago Heights are June and July, with an average maximum UV index of 6.
What part of the year is the hottest in South Chicago Heights?
July stands out as South Chicago Heights's warmest month, with an average high-temperature of 82°F (27.8°C) and a low-temperature of 65.7°F (18.7°C).
What month has the most sunshine in South Chicago Heights?
The month with the most sunshine is August, with an average of 9.8h of sunshine.
What is the least humid month in South Chicago Heights?
With an average relative humidity of 73%, October is the least humid month in South Chicago Heights.
What is the driest month in South Chicago Heights?
The month with the least rainfall in South Chicago Heights, Illinois, is November, when the rain falls for 10.4 days and typically collects 1.81" (46mm) of precipitation.
What is the month with the shortest days in South Chicago Heights?
December has the shortest days of the year in South Chicago Heights, with an average of 9h and 12min of daylight.
What is the month with the lowest UV index in South Chicago Heights?
The month with the lowest UV index in South Chicago Heights is December, with an average maximum UV index of 1.
Average temperature
South Chicago Heights, IL
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (29.7°F).
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure
South Chicago 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:
30.1"Hg - Average pressure in December:
30.1"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
South Chicago Heights, IL
- Average wind speed in January:
10mph - Average wind speed in February:
9.7mph - 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:
6.3mph - Average wind speed in August:
6.2mph - Average wind speed in September:
7.1mph - Average wind speed in October:
8.9mph - Average wind speed in November:
9.6mph - Average wind speed in December:
9.4mph
The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity
South Chicago Heights, IL
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (73%).
Average rainfall
South Chicago Heights, IL
- Average rainfall in January:
1.89" - Average rainfall in February:
1.89" - Average rainfall in March:
2.24" - Average rainfall in April:
3.86" - Average rainfall in May:
4.53" - Average rainfall in June:
4.33"
- Average rainfall in July:
3.78" - Average rainfall in August:
3.31" - Average rainfall in September:
2.56" - Average rainfall in October:
2.91" - Average rainfall in November:
1.81" - Average rainfall in December:
1.89"
The wettest month (with the highest rainfall) is May (4.53").
The driest month (with the least rainfall) is November (1.81").
Average rainfall days
South Chicago Heights, IL
- Average rainfall days in January:
7.2 days - Average rainfall days in February:
6.2 days - Average rainfall days in March:
12.8 days - Average rainfall days in April:
17.3 days - Average rainfall days in May:
19.6 days - Average rainfall days in June:
19.4 days
- Average rainfall days in July:
20.1 days - Average rainfall days in August:
17.6 days - Average rainfall days in September:
14.5 days - Average rainfall days in October:
13.8 days - Average rainfall days in November:
10.4 days - Average rainfall days in December:
8.5 days
The month with the highest number of rainy days is July (20.1 days).
The month with the least rainy days is February (6.2 days).
Average snowfall
South Chicago Heights, IL
The month with the highest snowfall is February (5.35").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
South Chicago Heights, IL
- Average snowfall days in January:
13.2 days - Average snowfall days in February:
11.8 days - Average snowfall days in March:
6.6 days - Average snowfall days in April:
2.1 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:
0.5 days - Average snowfall days in November:
3.7 days - Average snowfall days in December:
9.8 days
The month with the highest number of snowfall days is January (13.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
South Chicago Heights, 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 3min - 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 6min).
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:
5h and 5min - 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:
9h and 4min - Average sunshine in August:
9h and 5min - Average sunshine in September:
8h and 3min - Average sunshine in October:
5h and 5min - Average sunshine in November:
5h and 0min - Average sunshine in December:
4h and 0min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days
South Chicago Heights, IL
- Average sunshine days in January:
12.5 days - Average sunshine days in February:
10.7 days - Average sunshine days in March:
12.7 days - Average sunshine days in April:
9.6 days - Average sunshine days in May:
8.9 days - Average sunshine days in June:
8.5 days
- Average sunshine days in July:
7.8 days - Average sunshine days in August:
9.3 days - Average sunshine days in September:
12.7 days - Average sunshine days in October:
14.3 days - Average sunshine days in November:
16.3 days - Average sunshine days in December:
14 days
The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is July (7.8 days).
Average UV index
South Chicago Heights, IL
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
South Chicago Heights, IL
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility
South Chicago Heights, IL
The months with the highest visibility are March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and July (5mi).
South Chicago Heights, Illinois, USA
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