Climate and monthly weather forecast
McLeansboro, IL

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Weather in January

January, the same as December, is an icy winter month in McLeansboro, Illinois, with an average temperature varying between 38.5°F (3.6°C) and 25.7°F (-3.5°C). January brings the lowest temperatures, with an average high of 38.5°F (3.6°C) and an average low of 25.7°F (-3.5°C). Weather in January »

Weather in February

February, the last month of the winter in McLeansboro, is a chilly month, with an average temperature fluctuating between 43.5°F (6.4°C) and 29.7°F (-1.3°C). February brings an average high-temperature of a chilly 43.5°F (6.4°C), nearly identical to the preceding month. Weather in February »

Weather in March

March, the first month of the spring in McLeansboro, is a fresh month, with an average temperature varying between 54.5°F (12.5°C) and 38.8°F (3.8°C). An upsurge in temperatures occurs as February gives way to March, with average highs shifting from a frosty 43.5°F (6.4°C) to a cool 54.5°F (12.5°C). Weather in March »

Weather in April

April in McLeansboro, Illinois, is a refreshing spring month, with an average temperature ranging between min 48.7°F (9.3°C) and max 66°F (18.9°C). The shift from March to April is marked by an increase in the average high-temperature, moving from a cool 54.5°F (12.5°C) to a refreshing 66°F (18.9°C). Weather in April »

Weather in May

The last month of the spring, May, is a warm month in McLeansboro, Illinois, with an average temperature varying between 75.2°F (24°C) and 58.3°F (14.6°C). As April transitions into May, McLeansboro sees a rise in the average high-temperature, moving from a comfortable 66°F (18.9°C) to a warm 75.2°F (24°C). Weather in May »

Weather in June

June, the first month of the summer in McLeansboro, is also a moderately hot month, with an average temperature varying between 66.6°F (19.2°C) and 84.2°F (29°C). June brings an increase in the average high-temperature, progressing from 75.2°F (24°C) in May to a still moderately hot 84.2°F (29°C). Weather in June »

Weather in July

July is a tropical summer month in McLeansboro, Illinois, with temperature in the range of an average high of 86.4°F (30.2°C) and an average low of 68.2°F (20.1°C). July is the warmest month of the year, registering average temperatures as high as 86.4°F (30.2°C) and as low as 68.2°F (20.1°C). July's average heat index is computed to be a fiery hot 100.4°F (38°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in McLeansboro, Illinois, with temperature in the range of an average high of 84.9°F (29.4°C) and an average low of 66.2°F (19°C). The advent of August reveals an average high-temperature of a moderately hot 84.9°F (29.4°C), showing minimal difference from the prior month. Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in McLeansboro, Illinois, with temperature in the range of an average high of 79.7°F (26.5°C) and an average low of 60.6°F (15.9°C). McLeansboro ushers in September with an average high-temperature of a still warm 79.7°F (26.5°C), showing a close resemblance to the previous month. Weather in September »

Weather in October

October, the same as September, is another comfortable autumn month in McLeansboro, Illinois, with an average temperature fluctuating between 49.6°F (9.8°C) and 67.1°F (19.5°C). The shift from September to October corresponds with a decrease in the average high-temperature, down to a refreshing 67.1°F (19.5°C) from a warm 79.7°F (26.5°C). Weather in October »

Weather in November

November, the last month of the autumn in McLeansboro, is another cool month, with an average temperature ranging between max 53.2°F (11.8°C) and min 38.3°F (3.5°C). The onset of November is marked by a decrease in temperature, transitioning from a refreshing 67.1°F (19.5°C) in October to a cool 53.2°F (11.8°C). Weather in November »

Weather in December

The first month of the winter, December, is still a chilly month in McLeansboro, Illinois, with an average temperature ranging between min 31.3°F (-0.4°C) and max 43.3°F (6.3°C). The onset of December introduces a moderate change in McLeansboro's weather, with average high-temperatures falling from November's cool 53.2°F (11.8°C) to a chilly 43.3°F (6.3°C). Weather in December »
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Frequently asked questions

What part of the year is the coldest in McLeansboro?

January is the coldest month of the year in McLeansboro, Illinois, registering average temperatures as high as 38.5°F (3.6°C) and as low as 25.7°F (-3.5°C).

How many days does it rain in McLeansboro?

In McLeansboro, Illinois, during the entire year, the rain falls for 143.1 days and collects up to 29.65" (753mm) of precipitation.

When does it snow in McLeansboro?

January through April, October through December are months with snowfall.

How many days does it snow in McLeansboro?

Throughout the year, there are 16.7 snowfall days, and 5.79" (147mm) of snow is accumulated.

What is the month with the least sunshine in McLeansboro?

January has the least sunshine of the year in McLeansboro, with an average of 4.4h of sunshine.

What is the month with the lowest UV index in McLeansboro?

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.

What is the snowiest month in McLeansboro?

The month with the most snowfall in McLeansboro is February, when snow falls for 4.6 days and typically aggregates up to 1.42" (36mm) of snow.

When is Daylight Saving Time (DST) in McLeansboro?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in McLeansboro, 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 McLeansboro?

April is the month with the most rainfall in McLeansboro. Rain falls for 14.3 days and accumulates 4.13" (105mm) of precipitation.

What is the most humid month in McLeansboro?

The most humid month in McLeansboro, Illinois, is May, with an average relative humidity of 79%.

When it does not snow in McLeansboro?

In McLeansboro, snow does not fall in May through September.

What are the months with the highest UV index in McLeansboro?

The months with the highest UV index in McLeansboro, Illinois, are May through August, with an average maximum UV index of 6.

When are the longest days in McLeansboro?

June has the longest days of the year in McLeansboro, with an average of 14h and 48min of daylight.

What are the months with the most sunshine in McLeansboro?

The months with the most sunshine in McLeansboro, Illinois, are June and July, with an average of 10.5h of sunshine.

What time of the year is the hottest in McLeansboro?

McLeansboro experiences its highest temperatures in July, with an average peak of 86.4°F (30.2°C) and a low of 68.2°F (20.1°C).

What is the driest month in McLeansboro?

The month with the least rainfall in McLeansboro is September, when the rain falls for 11.5 days and typically collects 1.57" (40mm) of precipitation.

What is the least humid month in McLeansboro?

With an average relative humidity of 70%, October is the least humid month.

What is the month with the shortest days in McLeansboro?

The month with the shortest days in McLeansboro, Illinois, is December, with an average of 9h and 36min of daylight.

Average temperature
McLeansboro, IL

Average temperature - McLeansboro, IL

The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (38.5°F).

The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).

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Average pressure
McLeansboro, IL

Average pressure - McLeansboro, IL

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed
McLeansboro, IL

Average wind speed - McLeansboro, IL

The windiest months (with the highest average wind speed) are January, February and March (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).

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Average rainfall
McLeansboro, IL

Average rainfall - McLeansboro, IL

The wettest month (with the highest rainfall) is April (4.13").
The driest month (with the least rainfall) is September (1.57").

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Average rainfall days
McLeansboro, IL

Average rainfall days - McLeansboro, IL

The month with the highest number of rainy days is May (16.2 days).
The months with the least rainy days are January and February (8.3 days).

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Average snowfall
McLeansboro, IL

Average snowfall - McLeansboro, IL

The month with the highest snowfall is February (1.42").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days
McLeansboro, IL

Average snowfall days - McLeansboro, IL

The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight / Average sunshine
McLeansboro, IL

Average daylight / Average sunshine - McLeansboro, IL

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

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Average sunshine days
McLeansboro, IL

Average sunshine days - McLeansboro, IL

The month with the most sunshine days is October (20.3 days).
The month with the least sunshine days is May (11.8 days).

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Average UV index
McLeansboro, IL

Average UV index - McLeansboro, IL

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover
McLeansboro, IL

Average cloud cover - McLeansboro, IL

The months with the most cloud cover are January and February (Cloud cover 51).
The months with the least cloud cover are June, July and August (Cloud cover 28).

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Average visibility
McLeansboro, IL

Average visibility - McLeansboro, 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).

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McLeansboro, Illinois, USA

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