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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, in Allerton, Illinois, is an icy winter month, with an average temperature fluctuating between 21°F (-6.1°C) and 33.3°F (0.7°C). In Allerton, the month of January registers the lowest temperatures, averaging 33.3°F (0.7°C) at the peak and 21°F (-6.1°C) at the lowest. Weather in January »
Weather in February
The last month of the winter, February, is another cold month in Allerton, Illinois, with temperature in the range of an average low of 25°F (-3.9°C) and an average high of 37.9°F (3.3°C). During February, Allerton observes a subtle ascent to a still wintry 37.9°F (3.3°C) from January's 33.3°F (0.7°C) in the average high-temperature. Weather in February »
Weather in March
The first month of the spring, March, is a cool month in Allerton, Illinois, with temperature in the range of an average high of 50.2°F (10.1°C) and an average low of 35.4°F (1.9°C). March brings a rise in Allerton's average high-temperature, moving from a cold 37.9°F (3.3°C) in February to a fresh 50.2°F (10.1°C). Weather in March »
Weather in April
April is a refreshing spring month in Allerton, Illinois, with temperature in the range of an average low of 46°F (7.8°C) and an average high of 61.9°F (16.6°C). April comes with an increase, with the average high-temperature moving from a fresh 50.2°F (10.1°C) in March to a comfortable 61.9°F (16.6°C). Weather in April »
Weather in May
May, the last month of the spring in Allerton, is an agreeable month, with an average temperature ranging between min 56.5°F (13.6°C) and max 72.7°F (22.6°C). May's arrival brings a change in high-temperatures, moving from a comfortable 61.9°F (16.6°C) in April to a pleasant 72.7°F (22.6°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Allerton, Illinois, with temperature in the range of an average low of 64°F (17.8°C) and an average high of 80.8°F (27.1°C). Allerton's transition into June is marked by a minor temperature shift, moving from a pleasant 72.7°F (22.6°C) in May to a warm 80.8°F (27.1°C). Weather in June »
Weather in July
July, like June, in Allerton, Illinois, is another warm summer month, with temperature in the range of an average low of 65.7°F (18.7°C) and an average high of 82°F (27.8°C). July, having an average high-temperature of 82°F (27.8°C) and an average low-temperature of 65.7°F (18.7°C), is the warmest month. The average heat index in July is estimated at a tropical 89.6°F (32°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Allerton, Illinois, with an average temperature varying between 81°F (27.2°C) and 63.7°F (17.6°C). The start of August sees the average high-temperature at a still moderately hot 81°F (27.2°C), showing little difference from July's 82°F (27.8°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Allerton, Illinois, with an average temperature fluctuating between 77°F (25°C) and 58.5°F (14.7°C). The initiation of September sees an average high-temperature of a still warm 77°F (25°C), showing minor variations from the previous month. Weather in September »
Weather in October
October, the same as September, is another refreshing autumn month in Allerton, Illinois, with an average temperature ranging between max 63.9°F (17.7°C) and min 48°F (8.9°C). The beginning of October marks a decrease in the average high-temperature, transitioning from a moderately hot 77°F (25°C) in September to a comfortable 63.9°F (17.7°C). Weather in October »
Weather in November
November, the last month of the autumn in Allerton, is also a frosty month, with an average temperature ranging between max 49.6°F (9.8°C) and min 36.1°F (2.3°C). The onset of November is marked by a decrease in temperature, transitioning from a refreshing 63.9°F (17.7°C) in October to a chilly 49.6°F (9.8°C). Weather in November »
Weather in December
December, the first month of the winter in Allerton, is also a wintry month, with an average temperature varying between 38.5°F (3.6°C) and 28°F (-2.2°C). December's arrival coincides with a drop in the average high-temperature, decreasing from November's frosty 49.6°F (9.8°C) to a cold 38.5°F (3.6°C). Weather in December »
[Resources]Frequently asked questions
What month is the coldest in Allerton?
Allerton's coldest weather arrives in January, when temperatures average a high of 33.3°F (0.7°C) and a low of 21°F (-6.1°C).
How many days does it rain in Allerton?
In Allerton, during the entire year, the rain falls for 132 days and collects up to 15.94" (405mm) of precipitation.
When does it snow in Allerton?
January through April, October through December are months with snowfall.
How many days does it snow in Allerton?
Throughout the year, in Allerton, Illinois, there are 25.6 snowfall days, and 4.41" (112mm) of snow is accumulated.
What is the month with the least sunshine in Allerton?
The month with the least sunshine is January, with an average of 4.1h of sunshine.
What are the months with the lowest UV index in Allerton?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the driest month in Allerton?
February is the month with the least rainfall. Rain falls for 6 days and accumulates 0.83" (21mm) of precipitation.
When is Daylight Saving Time (DST) in Allerton?
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 rainiest month in Allerton?
April is the month with the most rainfall in Allerton. Rain falls for 14.1 days and accumulates 1.97" (50mm) of precipitation.
When it does not snow in Allerton?
In Allerton, Illinois, snow does not fall in May through September.
When are the longest days in Allerton?
June has the longest days of the year in Allerton, Illinois, with an average of 15h and 0min of daylight.
What month has the most sunshine in Allerton?
June has the most sunshine of the year in Allerton, Illinois, with an average of 10.3h of sunshine.
When is the highest UV index in Allerton?
The months with the highest UV index in Allerton, Illinois, are June through August, with an average maximum UV index of 6.
What month is the hottest in Allerton?
July proves to be the warmest month, recording an average peak temperature of 82°F (27.8°C) and a minimum temperature of 65.7°F (18.7°C).
What is the most humid month in Allerton?
The most humid month in Allerton, Illinois, is July, with an average relative humidity of 84%.
What is the least humid month in Allerton?
October is the least humid month in Allerton, with an average relative humidity of 70%.
When does it snow the most in Allerton?
The month with the most snowfall in Allerton, Illinois, is December, when snow falls for 5.7 days and typically aggregates up to 1.26" (32mm) of snow.
What is the month with the shortest days in Allerton?
The month with the shortest days is December, with an average of 9h and 24min of daylight.
Average temperature
Allerton, IL
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.3°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 (21°F).
Average pressure
Allerton, IL
- Average pressure in January:
30.15"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:
29.93"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Allerton, IL
- Average wind speed in January:
10.8mph - Average wind speed in February:
10.7mph - Average wind speed in March:
10.3mph - Average wind speed in April:
10.5mph - Average wind speed in May:
8.8mph - Average wind speed in June:
7.5mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
6.3mph - Average wind speed in September:
7.2mph - Average wind speed in October:
9.4mph - Average wind speed in November:
10.1mph - Average wind speed in December:
10mph
The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity
Allerton, IL
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).
Average rainfall
Allerton, IL
- Average rainfall in January:
1.06" - Average rainfall in February:
0.83" - Average rainfall in March:
1.38" - Average rainfall in April:
1.97" - Average rainfall in May:
1.89" - Average rainfall in June:
1.65"
- Average rainfall in July:
1.61" - Average rainfall in August:
1.46" - Average rainfall in September:
0.87" - Average rainfall in October:
1.3" - Average rainfall in November:
0.94" - Average rainfall in December:
0.98"
The wettest month (with the highest rainfall) is April (1.97").
The driest month (with the least rainfall) is February (0.83").
Average rainfall days
Allerton, IL
- Average rainfall days in January:
6.9 days - Average rainfall days in February:
6 days - Average rainfall days in March:
11.5 days - Average rainfall days in April:
14.1 days - Average rainfall days in May:
15.6 days - Average rainfall days in June:
13.8 days
- Average rainfall days in July:
15.7 days - Average rainfall days in August:
13 days - Average rainfall days in September:
10.1 days - Average rainfall days in October:
9.9 days - Average rainfall days in November:
7.7 days - Average rainfall days in December:
7.7 days
The month with the highest number of rainy days is July (15.7 days).
The month with the least rainy days is February (6 days).
Average snowfall
Allerton, IL
The month with the highest snowfall is December (1.26").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Allerton, IL
- Average snowfall days in January:
8 days - Average snowfall days in February:
7.2 days - Average snowfall days in March:
2.5 days - Average snowfall days in April:
0.5 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:
1.5 days - Average snowfall days in December:
5.7 days
The month with the highest number of snowfall days is January (8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Allerton, 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:
10h and 0min - 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 24min).
- Average sunshine in January:
4h and 1min - Average sunshine in February:
4h and 2min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 1min - Average sunshine in May:
9h and 0min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 0min - Average sunshine in August:
10h and 0min - Average sunshine in September:
9h and 1min - Average sunshine in October:
6h and 2min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days
Allerton, IL
- Average sunshine days in January:
18.5 days - Average sunshine days in February:
15.9 days - Average sunshine days in March:
15.6 days - Average sunshine days in April:
13.8 days - Average sunshine days in May:
12.2 days - Average sunshine days in June:
11.5 days
- Average sunshine days in July:
11.1 days - Average sunshine days in August:
13.8 days - Average sunshine days in September:
17.3 days - Average sunshine days in October:
18.3 days - Average sunshine days in November:
19.8 days - Average sunshine days in December:
18.1 days
The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is July (11.1 days).
Average UV index
Allerton, 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
Allerton, IL
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility
Allerton, 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).
Allerton, Illinois, USA
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