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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 Countryside, Illinois, with an average temperature ranging between min 18.3°F (-7.6°C) and max 28.9°F (-1.7°C). In Countryside, the lowest average temperatures are observed in January, with a high of 28.9°F (-1.7°C) and a low of 18.3°F (-7.6°C). Weather in January »
Weather in February
February, the last month of the winter in Countryside, is a wintry month, with temperature in the range of an average low of 20.8°F (-6.2°C) and an average high of 32.5°F (0.3°C). Countryside's transition from January to February introduces an average high-temperature of an icy 32.5°F (0.3°C), marking an insignificant variation from the 28.9°F (-1.7°C). Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Countryside, Illinois, with an average temperature varying between 32°F (0°C) and 45.1°F (7.3°C). The onset of March brings a temperature shift, with the average high-temperature moving from an icy 32.5°F (0.3°C) in February to a frosty 45.1°F (7.3°C). Weather in March »
Weather in April
April is a refreshing spring month in Countryside, Illinois, with an average temperature fluctuating between 55.9°F (13.3°C) and 40.8°F (4.9°C). April's arrival brings a temperature shift, moving from a frosty 45.1°F (7.3°C) in March to a moderate 55.9°F (13.3°C). Weather in April »
Weather in May
May, the last month of the spring in Countryside, is an enjoyable month, with an average temperature ranging between max 67.6°F (19.8°C) and min 52°F (11.1°C). In Countryside, the average high-temperature in May increases from 55.9°F (13.3°C) in April to a still refreshing 67.6°F (19.8°C). Weather in May »
Weather in June
June, the first month of the summer in Countryside, is a warm month, with an average temperature varying between 61.7°F (16.5°C) and 77.4°F (25.2°C). Entering June, Countryside sees a temperature rise, with the average high-temperature advancing from May's enjoyable 67.6°F (19.8°C) to a warm 77.4°F (25.2°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Countryside, Illinois, with an average temperature varying between 81.9°F (27.7°C) and 66.6°F (19.2°C). Countryside's temperature records reveal July as the warmest month, marked by average highs of 81.9°F (27.7°C) and lows of 66.6°F (19.2°C). In July, the average heat index is computed to be a hot 87.8°F (31°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Countryside, Illinois, with an average temperature ranging between min 65.3°F (18.5°C) and max 80.6°F (27°C). Countryside's weather in August indicates an average high-temperature of a still moderately hot 80.6°F (27°C), nearly consistent with the 81.9°F (27.7°C) of July. Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Countryside, Illinois, with an average temperature varying between 74.1°F (23.4°C) and 58.6°F (14.8°C). September ushers in a minor alteration in Countryside's climate, with the average high-temperature moving from August's 80.6°F (27°C) to a still warm 74.1°F (23.4°C). Weather in September »
Weather in October
October, like September, in Countryside, Illinois, is another refreshing autumn month, with an average temperature ranging between min 46.9°F (8.3°C) and max 60.8°F (16°C). The onset of October results in a decrease in the average high-temperature, receding from a warm 74.1°F (23.4°C) in September to a refreshing 60.8°F (16°C). Weather in October »
Weather in November
November, the last month of the autumn in Countryside, is also a frosty month, with an average temperature ranging between max 46.2°F (7.9°C) and min 33.8°F (1°C). A clear reduction in the average high-temperature is witnessed with the onset of November, reducing from a comfortable 60.8°F (16°C) in October to a frosty 46.2°F (7.9°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in Countryside, Illinois, with temperature in the range of an average high of 35.2°F (1.8°C) and an average low of 25.5°F (-3.6°C). The onset of December is marked by a decrease in temperature, transitioning from a frosty 46.2°F (7.9°C) in November to a wintry 35.2°F (1.8°C). Weather in December »
Updated: Jul 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 are the coldest months?
January tends to be the coldest month, with temperatures averaging a daily high of 28.9°F (-1.7°C) and a low of 18.3°F (-7.6°C).
What are the most humid months?
January and February, with an average relative humidity of 82%, are most humid months.
How much does it rain?
Throughout the year, in Countryside, there are 166.8 rainfall days, and 34.96" (888mm) of precipitation is accumulated.
When does it snow?
January through April, October through December are months with snowfall.
How many days does it snow?
Throughout the year, there are 47.1 snowfall days, and 19.02" (483mm) of snow is accumulated.
What is the month with the least sunshine?
January has the least sunshine of the year, with an average of 3.7h of sunshine.
When does it snow the most?
February is the month with the most snowfall. Snow falls for 11.8 days and accumulates 5.28" (134mm) of snow.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Countryside, 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?
May is the month with the most rainfall. Rain falls for 19.2 days and accumulates 4.61" (117mm) 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 month is the hottest?
July is the warmest month, exhibiting average temperatures of 81.9°F (27.7°C) at the peak and 66.6°F (19.2°C) at the base.
When is the highest UV index?
The months with the highest UV index are July and August, with an average maximum UV index of 6.
What month has the most sunshine?
With an average of 10.3h of sunshine, August has the most sunshine of the year.
What is the least humid month in Countryside?
October is the least humid month, with an average relative humidity of 72%.
What is the driest month?
The months with the least rainfall are November and December Rain falls for 10.5 days and accumulates 1.77" (45mm) of rain.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 12min of daylight.
What is the month with the lowest UV index?
December is the month with the lowest UV index, with an average maximum UV index of 1.
Average temperature
Countryside, IL
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (28.9°F).
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure
Countryside, 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:
30.09"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
Countryside, IL
- Average wind speed in January:
10.2mph - Average wind speed in February:
9.9mph - Average wind speed in March:
9.4mph - Average wind speed in April:
9.7mph - Average wind speed in May:
8.2mph - Average wind speed in June:
7.3mph
- Average wind speed in July:
6.4mph - Average wind speed in August:
6.3mph - Average wind speed in September:
7.4mph - Average wind speed in October:
9.1mph - Average wind speed in November:
9.7mph - Average wind speed in December:
9.4mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity
Countryside, 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
Countryside, IL
- Average rainfall in January:
1.89" - Average rainfall in February:
1.81" - Average rainfall in March:
2.09" - Average rainfall in April:
3.66" - Average rainfall in May:
4.61" - Average rainfall in June:
4.41"
- Average rainfall in July:
3.86" - Average rainfall in August:
3.46" - Average rainfall in September:
2.68" - Average rainfall in October:
2.95" - Average rainfall in November:
1.77" - Average rainfall in December:
1.77"
The wettest month (with the highest rainfall) is May (4.61").
The driest months (with the least rainfall) are November and December (1.77").
Average rainfall days
Countryside, IL
- Average rainfall days in January:
7.8 days - Average rainfall days in February:
5.9 days - Average rainfall days in March:
12.5 days - Average rainfall days in April:
17.6 days - Average rainfall days in May:
19.2 days - Average rainfall days in June:
19.4 days
- Average rainfall days in July:
18.7 days - Average rainfall days in August:
17.4 days - Average rainfall days in September:
15 days - Average rainfall days in October:
14.3 days - Average rainfall days in November:
10.5 days - Average rainfall days in December:
8.5 days
The month with the highest number of rainy days is June (19.4 days).
The month with the least rainy days is February (5.9 days).
Average snowfall
Countryside, IL
The month with the highest snowfall is February (5.28").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Countryside, IL
- Average snowfall days in January:
13.3 days - Average snowfall days in February:
11.8 days - Average snowfall days in March:
6.8 days - Average snowfall days in April:
1.8 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:
0.2 days - Average snowfall days in November:
3.6 days - Average snowfall days in December:
9.6 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Countryside, 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 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 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 1min - Average sunshine in December:
4h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days
Countryside, IL
- Average sunshine days in January:
12.8 days - Average sunshine days in February:
11.6 days - Average sunshine days in March:
13.2 days - Average sunshine days in April:
9.5 days - Average sunshine days in May:
9.5 days - Average sunshine days in June:
8.2 days
- Average sunshine days in July:
8.8 days - Average sunshine days in August:
9.5 days - Average sunshine days in September:
11.9 days - Average sunshine days in October:
14 days - Average sunshine days in November:
16.1 days - Average sunshine days in December:
14.3 days
The month with the most sunshine days is November (16.1 days).
The month with the least sunshine days is June (8.2 days).
Average UV index
Countryside, IL
The months with the highest UV index are July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Countryside, IL
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility
Countryside, IL
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Countryside, Illinois, USA
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