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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 Holland, Illinois, with an average temperature ranging between min 19.6°F (-6.9°C) and max 29.8°F (-1.2°C). The month of January sees the lowest average temperatures, reaching 29.8°F (-1.2°C) at the peak and 19.6°F (-6.9°C) at the low. Weather in January »
Weather in February
The last month of the winter, February, is a wintry month in South Holland, Illinois, with an average temperature fluctuating between 22.5°F (-5.3°C) and 32.9°F (0.5°C). South Holland commences February with an average high-temperature of an icy 32.9°F (0.5°C), maintaining a close resemblance to the previous month. Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in South Holland, Illinois, with an average temperature fluctuating between 44.2°F (6.8°C) and 32.5°F (0.3°C). March signals a shift in the average high-temperature, moving from February's wintry 32.9°F (0.5°C) to a frosty 44.2°F (6.8°C). Weather in March »
Weather in April
April in South Holland, Illinois, is a fresh spring month, with temperature in the range of an average high of 54.9°F (12.7°C) and an average low of 41.4°F (5.2°C). The shift into April brings an increase in the average high-temperature, moving from a chilly 44.2°F (6.8°C) in March to a fresh 54.9°F (12.7°C). Weather in April »
Weather in May
May, the last month of the spring in South Holland, is an enjoyable month, with an average temperature varying between 51.8°F (11°C) and 65.7°F (18.7°C). As May arrives, South Holland's weather shows an increase in high-temperatures, moving from April's fresh 54.9°F (12.7°C) to a comfortable 65.7°F (18.7°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in South Holland, Illinois, with an average temperature ranging between max 75.7°F (24.3°C) and min 61.2°F (16.2°C). South Holland sees an increase in the average high-temperature with the arrival of June, moving from May's refreshing 65.7°F (18.7°C) to a moderately hot 75.7°F (24.3°C). Weather in June »
Weather in July
July, like June, in South Holland, Illinois, is a moderately hot summer month, with temperature in the range of an average high of 80.1°F (26.7°C) and an average low of 66.9°F (19.4°C). July is the warmest month, with an average high-temperature of 80.1°F (26.7°C) and an average low-temperature of 66.9°F (19.4°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in South Holland, Illinois, with temperature in the range of an average low of 66°F (18.9°C) and an average high of 79.3°F (26.3°C). The unfolding of August shows an average high-temperature of a still warm 79.3°F (26.3°C), indicating a slight variance from July's 80.1°F (26.7°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in South Holland, Illinois, with an average temperature fluctuating between 59.2°F (15.1°C) and 73.8°F (23.2°C). September's onset introduces a mild reduction in the average high-temperature, from a moderately hot 79.3°F (26.3°C) in August to a still warm 73.8°F (23.2°C). Weather in September »
Weather in October
October, like September, is another refreshing autumn month in South Holland, Illinois, with temperature in the range of an average low of 47.7°F (8.7°C) and an average high of 60.3°F (15.7°C). With the onset of October, South Holland's average high-temperature adjusts, receding from September's moderately hot 73.8°F (23.2°C) to a mild 60.3°F (15.7°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in South Holland, Illinois, with an average temperature varying between 35.2°F (1.8°C) and 46.8°F (8.2°C). The start of November involves a temperature drop, moving from a mild 60.3°F (15.7°C) in October to a chilly 46.8°F (8.2°C). Weather in November »
Weather in December
The first month of the winter, December, is also a wintry month in South Holland, Illinois, with an average temperature varying between 35.8°F (2.1°C) and 26.8°F (-2.9°C). December comes with a drop in the average high-temperature, falling from November's chilly 46.8°F (8.2°C) to a cold 35.8°F (2.1°C). Weather in December »
[Resources]Frequently asked questions
What time of the year is the coldest in South Holland?
January is the month that records the lowest temperatures, with averages ranging from a high of 29.8°F (-1.2°C) to a low of 19.6°F (-6.9°C).
What is the most humid month in South Holland?
The months with the highest humidity are January and February, with an average relative humidity of 82%.
How many days does it rain in South Holland?
Throughout the year, in South Holland, there are 110.3 rainfall days, and 10.31" (262mm) of precipitation is accumulated.
When does it snow in South Holland?
Months with snowfall are January through April, October through December.
What is the snowiest month in South Holland?
January is the month with the most snowfall in South Holland, Illinois. Snow falls for 9.3 days and accumulates 1.1" (28mm) of snow.
How many days does it snow in South Holland?
In South Holland, Illinois, during the entire year, snow falls for 34.1 days and aggregates up to 4.13" (105mm) of snow.
What is the month with the least sunshine in South Holland?
January has the least sunshine of the year in South Holland, with an average of 3.6h of sunshine.
What is the driest month in South Holland?
February and December are months with the least rain in South Holland when the rain falls for 4.1 days and typically aggregates up to 0.47" (12mm) of rain.
When is Daylight Saving Time (DST) in South Holland?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in South Holland, 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 rainiest month in South Holland?
The wettest months in South Holland, Illinois, are May and June, with an average 1.38" (35mm) of rainfall.
When it does not snow in South Holland?
May through September are months without snowfall in South Holland.
When are the longest days in South Holland?
The month with the longest days is June, with an average of 15h and 6min of daylight.
What are the months with the highest UV index in South Holland?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What are the warmest months in South Holland?
July is the warmest month in South Holland, with the temperature often reaching an average high of 80.1°F (26.7°C) and an average low of 66.9°F (19.4°C).
What month has the most sunshine in South Holland?
The month with the most sunshine is August, with an average of 10.4h of sunshine.
What is the least humid month in South Holland?
October is the least humid month in South Holland, with an average relative humidity of 72%.
What is the month with the shortest days in South Holland?
December has the shortest days of the year in South Holland, with an average of 9h and 12min of daylight.
When is the lowest UV index in South Holland?
The month with the lowest UV index in South Holland, Illinois, is December, with an average maximum UV index of 1.
Average temperature
South Holland, IL
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (29.8°F).
The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).
Average pressure
South Holland, IL
- Average pressure in January:
30.11"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:
29.97"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:
30.09"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
South Holland, IL
- Average wind speed in January:
11mph - Average wind speed in February:
10.6mph - Average wind speed in March:
10mph - Average wind speed in April:
10.3mph - Average wind speed in May:
8.6mph - Average wind speed in June:
7.7mph
- Average wind speed in July:
6.8mph - Average wind speed in August:
6.8mph - Average wind speed in September:
8mph - Average wind speed in October:
9.8mph - Average wind speed in November:
10.6mph - Average wind speed in December:
10.3mph
The windiest month (with the highest average wind speed) is January (11mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity
South Holland, IL
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (72%).
Average rainfall
South Holland, IL
- Average rainfall in January:
0.51" - Average rainfall in February:
0.47" - Average rainfall in March:
0.51" - Average rainfall in April:
1.1" - Average rainfall in May:
1.38" - Average rainfall in June:
1.38"
- Average rainfall in July:
1.18" - Average rainfall in August:
0.98" - Average rainfall in September:
0.91" - Average rainfall in October:
0.87" - Average rainfall in November:
0.55" - Average rainfall in December:
0.47"
The wettest months (with the highest rainfall) are May and June (1.38").
The driest months (with the least rainfall) are February and December (0.47").
Average rainfall days
South Holland, IL
- Average rainfall days in January:
4.6 days - Average rainfall days in February:
4.1 days - Average rainfall days in March:
8.7 days - Average rainfall days in April:
11.7 days - Average rainfall days in May:
13.1 days - Average rainfall days in June:
12.9 days
- Average rainfall days in July:
14 days - Average rainfall days in August:
11 days - Average rainfall days in September:
9.8 days - Average rainfall days in October:
9 days - Average rainfall days in November:
7.2 days - Average rainfall days in December:
4.2 days
The month with the highest number of rainy days is July (14 days).
The month with the least rainy days is February (4.1 days).
Average snowfall
South Holland, IL
The month with the highest snowfall is January (1.1").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
South Holland, IL
- Average snowfall days in January:
9.3 days - Average snowfall days in February:
8.5 days - Average snowfall days in March:
4.2 days - Average snowfall days in April:
1.4 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:
0.3 days - Average snowfall days in November:
2.9 days - Average snowfall days in December:
7.5 days
The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
South Holland, 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:
6h and 0min - Average sunshine in April:
7h and 4min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
10h and 2min - Average sunshine in September:
8h and 5min - 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: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days
South Holland, IL
- Average sunshine days in January:
18.3 days - Average sunshine days in February:
17.1 days - Average sunshine days in March:
18.8 days - Average sunshine days in April:
15.2 days - Average sunshine days in May:
14.3 days - Average sunshine days in June:
13.1 days
- Average sunshine days in July:
13.4 days - Average sunshine days in August:
15.6 days - Average sunshine days in September:
16.9 days - Average sunshine days in October:
18.1 days - Average sunshine days in November:
19.7 days - Average sunshine days in December:
19.8 days
The month with the most sunshine days is December (19.8 days).
The month with the least sunshine days is June (13.1 days).
Average UV index
South Holland, 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
South Holland, IL
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility
South Holland, 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).
South Holland, Illinois, USA
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