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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 Shirley, Illinois, with an average temperature fluctuating between 30.7°F (-0.7°C) and 18.9°F (-7.3°C). January is Shirley's coldest month, registering average high temperatures of 30.7°F (-0.7°C) and lows of 18.9°F (-7.3°C). Weather in January »
Weather in February
The last month of the winter, February, is a wintry month in Shirley, Illinois, with temperature in the range of an average low of 22.3°F (-5.4°C) and an average high of 35.6°F (2°C). The beginning of February records an average high-temperature of a cold 35.6°F (2°C), almost echoing the conditions of the previous month. Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Shirley, Illinois, with an average temperature varying between 48.7°F (9.3°C) and 34°F (1.1°C). March's arrival signals an increase in average high-temperatures, moving from February's icy 35.6°F (2°C) to a chilly 48.7°F (9.3°C). Weather in March »
Weather in April
April in Shirley, Illinois, is a refreshing spring month, with an average temperature fluctuating between 60.4°F (15.8°C) and 44.2°F (6.8°C). The shift into April brings an increase in the average high-temperature, moving from a frosty 48.7°F (9.3°C) in March to a refreshing 60.4°F (15.8°C). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in Shirley, Illinois, with an average temperature fluctuating between 72°F (22.2°C) and 55.4°F (13°C). Shirley's transition into May brings a rise in the average high-temperature, moving from a refreshing 60.4°F (15.8°C) in April to a pleasant 72°F (22.2°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Shirley, Illinois, with an average temperature fluctuating between 63°F (17.2°C) and 79.3°F (26.3°C). June marks a minor ascent in the average high-temperature, adjusting from May's agreeable 72°F (22.2°C) to a warm 79.3°F (26.3°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Shirley, Illinois, with an average temperature varying between 80.8°F (27.1°C) and 64.6°F (18.1°C). July, having an average high-temperature of 80.8°F (27.1°C) and an average low-temperature of 64.6°F (18.1°C), is the warmest month. In July, the heat index is evaluated at a hot 86°F (30°C). Weather in July »
Weather in August
August, the last month of the summer in Shirley, is also a moderately hot month, with an average temperature fluctuating between 79.9°F (26.6°C) and 63°F (17.2°C). Shirley observes a minor difference in average high-temperatures between July's 80.8°F (27.1°C) and August's 79.9°F (26.6°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Shirley, Illinois, with temperature in the range of an average high of 75.7°F (24.3°C) and an average low of 57.2°F (14°C). Shirley's weather in September displays an average high-temperature of a still moderately hot 75.7°F (24.3°C), showing minor disparity from August's 79.9°F (26.6°C). Weather in September »
Weather in October
October, the same as September, is another refreshing autumn month in Shirley, Illinois, with temperature in the range of an average high of 62.2°F (16.8°C) and an average low of 46.6°F (8.1°C). Shirley's October weather features a mild decline in high-temperatures, reducing from a moderately hot 75.7°F (24.3°C) in September to a refreshing 62.2°F (16.8°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Shirley, Illinois, with an average temperature varying between 47.7°F (8.7°C) and 34.7°F (1.5°C). Shirley's weather experiences a significant temperature drop with the arrival of November, falling from a refreshing 62.2°F (16.8°C) in October to a chilly 47.7°F (8.7°C). Weather in November »
Weather in December
December, the first month of the winter in Shirley, is still a cold month, with an average temperature varying between 36.5°F (2.5°C) and 26.2°F (-3.2°C). With the onset of December, Shirley's average high-temperature adjusts, receding from November's chilly 47.7°F (8.7°C) to a wintry 36.5°F (2.5°C). Weather in December »
Updated: Feb 12, 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 in Shirley?
The coldest time of the year is January, with temperatures averaging a high of 30.7°F (-0.7°C) and a low of 18.9°F (-7.3°C).
What is the driest month in Shirley?
The month with the least rainfall is January, when the rain falls for 5.6 days and typically collects 1.18" (30mm) of precipitation.
How many days does it rain in Shirley?
Throughout the year, in Shirley, there are 140.6 rainfall days, and 22.44" (570mm) of precipitation is accumulated.
When does it snow in Shirley?
January through April, October through December are months with snowfall in Shirley.
When does it snow the most in Shirley?
January is the month with the most snowfall. Snow falls for 11.5 days and accumulates 2.44" (62mm) of snow.
How many days does it snow in Shirley?
Throughout the year, in Shirley, Illinois, there are 35.4 snowfall days, and 9.45" (240mm) of snow is accumulated.
What is the month with the least sunshine in Shirley?
The month with the least sunshine is January, with an average of 3.6h of sunshine.
What are the months with the lowest UV index in Shirley?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Shirley, Illinois.
When is Daylight Saving Time (DST) in Shirley?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Shirley, 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 Shirley?
The month with the most rainfall in Shirley is May, when the rain falls for 17.5 days and typically aggregates up to 2.99" (76mm) of precipitation.
When it does not snow in Shirley?
In Shirley, Illinois, snow does not fall in May through September.
When are the longest days in Shirley?
June has the longest days of the year, with an average of 15h and 0min of daylight.
What month has the most sunshine in Shirley?
The month with the most sunshine is June, with an average of 9.7h of sunshine.
What is the month with the highest UV index in Shirley?
June through August, with an average maximum UV index of 6, are months with the highest UV index in Shirley.
What are the warmest months in Shirley?
Shirley's warmest month, July, generally records average temperatures ranging from a high of 80.8°F (27.1°C) to a low of 64.6°F (18.1°C).
What is the most humid month in Shirley?
The most humid month is July, with an average relative humidity of 85%.
What is the least humid month in Shirley?
October is the least humid month, with an average relative humidity of 71%.
What is the month with the shortest days in Shirley?
December has the shortest days of the year in Shirley, with an average of 9h and 18min of daylight.
Average temperature
Shirley, IL
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (30.7°F).
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure
Shirley, IL
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.94"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:
30.02"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Shirley, IL
- Average wind speed in January:
11.1mph - Average wind speed in February:
10.9mph - Average wind speed in March:
10.7mph - Average wind speed in April:
11mph - Average wind speed in May:
9.3mph - Average wind speed in June:
8.1mph
- Average wind speed in July:
6.8mph - Average wind speed in August:
6.6mph - Average wind speed in September:
7.8mph - Average wind speed in October:
9.8mph - Average wind speed in November:
10.6mph - Average wind speed in December:
10.5mph
The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity
Shirley, IL
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Shirley, IL
- Average rainfall in January:
1.18" - Average rainfall in February:
1.22" - Average rainfall in March:
1.65" - Average rainfall in April:
2.4" - Average rainfall in May:
2.99" - Average rainfall in June:
2.64"
- Average rainfall in July:
2.32" - Average rainfall in August:
2.01" - Average rainfall in September:
1.5" - Average rainfall in October:
1.89" - Average rainfall in November:
1.42" - Average rainfall in December:
1.22"
The wettest month (with the highest rainfall) is May (2.99").
The driest month (with the least rainfall) is January (1.18").
Average rainfall days
Shirley, IL
- Average rainfall days in January:
5.6 days - Average rainfall days in February:
5.3 days - Average rainfall days in March:
11.3 days - Average rainfall days in April:
14.6 days - Average rainfall days in May:
17.5 days - Average rainfall days in June:
15.8 days
- Average rainfall days in July:
17.8 days - Average rainfall days in August:
14.1 days - Average rainfall days in September:
12.2 days - Average rainfall days in October:
10.8 days - Average rainfall days in November:
8.5 days - Average rainfall days in December:
7.1 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is February (5.3 days).
Average snowfall
Shirley, IL
The month with the highest snowfall is January (2.44").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Shirley, IL
- Average snowfall days in January:
11.5 days - Average snowfall days in February:
7.8 days - Average snowfall days in March:
4.2 days - Average snowfall days in April:
1 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:
2.6 days - Average snowfall days in December:
8 days
The month with the highest number of snowfall days is January (11.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Shirley, 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 2min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- 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 4min
- Average sunshine in July:
9h and 2min - Average sunshine in August:
9h and 3min - 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 June (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days
Shirley, IL
- Average sunshine days in January:
14.8 days - Average sunshine days in February:
14.3 days - Average sunshine days in March:
15.3 days - Average sunshine days in April:
12.8 days - Average sunshine days in May:
11.1 days - Average sunshine days in June:
11.7 days
- Average sunshine days in July:
9.7 days - Average sunshine days in August:
12.8 days - Average sunshine days in September:
15 days - Average sunshine days in October:
17.4 days - Average sunshine days in November:
18.4 days - Average sunshine days in December:
16.6 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is July (9.7 days).
Average UV index
Shirley, 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, February, November and December (UV index 2).
Average cloud cover
Shirley, IL
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 33).
Average visibility
Shirley, IL
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Shirley, Illinois, USA
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