Climate and monthly weather forecast
Vernon, IL

Weather in January

January, like December, in Vernon, Illinois, is another cold winter month, with an average temperature varying between 37°F (2.8°C) and 24.3°F (-4.3°C). January is the coldest month, with an average high-temperature of 37°F (2.8°C) and an average low-temperature of 24.3°F (-4.3°C). Weather in January »

Weather in February

The last month of the winter, February, is also a wintry month in Vernon, Illinois, with an average temperature ranging between max 41.9°F (5.5°C) and min 27.9°F (-2.3°C). In Vernon, the average high-temperature in February is practically the same as in January - a still wintry 41.9°F (5.5°C). Weather in February »

Weather in March

March, the first month of the spring in Vernon, is a fresh month, with an average temperature varying between 37.6°F (3.1°C) and 53.2°F (11.8°C). In Vernon, the average high-temperature in March increases from a cold 41.9°F (5.5°C) in February to a fresh 53.2°F (11.8°C). Weather in March »

Weather in April

April is an enjoyable spring month in Vernon, Illinois, with an average temperature varying between 64.4°F (18°C) and 47.5°F (8.6°C). In Vernon, the average high-temperature in April rises from a cool 53.2°F (11.8°C) in March to an enjoyable 64.4°F (18°C). Weather in April »

Weather in May

The last month of the spring, May, is a warm month in Vernon, Illinois, with an average temperature fluctuating between 57.7°F (14.3°C) and 74.1°F (23.4°C). In Vernon, the average high-temperature in May increases from an enjoyable 64.4°F (18°C) in April to a warm 74.1°F (23.4°C). Weather in May »

Weather in June

The first month of the summer, June, is also a moderately hot month in Vernon, Illinois, with an average temperature fluctuating between 66.4°F (19.1°C) and 83.1°F (28.4°C). In Vernon, Illinois, the average high-temperature in June rises from 74.1°F (23.4°C) in May to a still moderately hot 83.1°F (28.4°C). Weather in June »

Weather in July

July, like June, in Vernon, Illinois, is another warm summer month, with an average temperature fluctuating between 67.5°F (19.7°C) and 84.7°F (29.3°C). The warmest month is July, with an average high-temperature of 84.7°F (29.3°C) and an average low-temperature of 67.5°F (19.7°C). In July, the average heat index is evaluated at a torrid 96.8°F (36°C). Weather in July »

Weather in August

August, the last month of the summer in Vernon, is another warm month, with an average temperature varying between 65.8°F (18.8°C) and 83.5°F (28.6°C). In Vernon, the average high-temperature in August is practically the same as in July - a still warm 83.5°F (28.6°C). Weather in August »

Weather in September

September, the first month of the autumn in Vernon, is also a moderately hot month, with an average temperature fluctuating between 78.3°F (25.7°C) and 59.7°F (15.4°C). In Vernon, Illinois, the average high-temperature in September is almost the same as in August - a still warm 78.3°F (25.7°C). Weather in September »

Weather in October

October, the same as September, is another comfortable autumn month in Vernon, Illinois, with an average temperature varying between 49.1°F (9.5°C) and 66.2°F (19°C). In Vernon, the average high-temperature in October decreases from a warm 78.3°F (25.7°C) in September to a comfortable 66.2°F (19°C). Weather in October »

Weather in November

November, the last month of the autumn in Vernon, is also a fresh month, with an average temperature varying between 37.9°F (3.3°C) and 52.2°F (11.2°C). In Vernon, Illinois, the average high-temperature in November decreases from an enjoyable 66.2°F (19°C) in October to a cool 52.2°F (11.2°C). Weather in November »

Weather in December

The first month of the winter, December, is also a wintry month in Vernon, Illinois, with an average temperature fluctuating between 30.6°F (-0.8°C) and 41.9°F (5.5°C). In December, the average high-temperature decreases from a fresh 52.2°F (11.2°C) in November to a wintry 41.9°F (5.5°C). Weather in December »
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FAQ

What is the coldest month in Vernon?

January is the coldest month in Vernon, with an average high-temperature of 37°F (2.8°C) and an average low-temperature of 24.3°F (-4.3°C).

How many days does it rain in Vernon?

Throughout the year, there are 145.5 rainfall days, and 28.39" (721mm) of precipitation is accumulated.

When does it snow in Vernon?

Months with snowfall are January through April, November and December.

What is the snowiest month in Vernon?

January is the month with the most snowfall in Vernon. Snow falls for 5.8 days and accumulates 1.77" (45mm) of snow.

How many days does it snow in Vernon?

In Vernon, Illinois, during the entire year, snow falls for 17.7 days and aggregates up to 5.91" (150mm) of snow.

What is the month with the least sunshine in Vernon?

With an average of 4.5h of sunshine, January has the least sunshine of the year.

What are the months with the lowest UV index in Vernon?

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

What is the driest month in Vernon?

The month with the least rainfall in Vernon is February, when the rain falls for 8.6 days and typically collects 1.46" (37mm) of precipitation.

When is Daylight Saving Time (DST) in Vernon?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts in Vernon, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from CDT to CST.

What is the most humid month in Vernon?

May, July and August, with an average relative humidity of 80%, are most humid months.

When it does not snow in Vernon?

In Vernon, Illinois, snow does not fall in May through October.

What is the rainiest month in Vernon?

The month with the most rainfall is June, when the rain falls for 15.1 days and typically aggregates up to 3.43" (87mm) of precipitation.

When are the longest days in Vernon?

With an average of 14h and 50min of daylight, June has the longest days of the year in Vernon, Illinois.

What month has the most sunshine in Vernon?

With an average of 10.5h of sunshine, June has the most sunshine of the year in Vernon, Illinois.

What is the month with the highest UV index in Vernon?

June through August, with an average maximum UV index of 6, are months with the highest UV index in Vernon, Illinois.

What is the warmest month in Vernon?

With an average high-temperature of 84.7°F (29.3°C) and an average low-temperature of 67.5°F (19.7°C), July is the warmest month in Vernon.

What is the least humid month in Vernon?

October is the least humid month, with an average relative humidity of 71%.

What is the month with the shortest days in Vernon?

With an average of 9h and 30min of daylight, December has the shortest days of the year in Vernon, Illinois.

Average temperature
Vernon, IL

Average temperature - Vernon, IL

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (37°F).

The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

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Average pressure
Vernon, IL

Average pressure - Vernon, IL

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed
Vernon, IL

Average wind speed - Vernon, IL

The windiest months (with the highest average wind speed) are January and February (10mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).

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Average humidity
Vernon, IL

Average humidity - Vernon, IL

The months with the highest relative humidity are May, July and August (80%).
The month with the lowest relative humidity is October (71%).

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Average rainfall
Vernon, IL

Average rainfall - Vernon, IL

The wettest month (with the highest rainfall) is June (3.43").
The driest month (with the least rainfall) is February (1.46").

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Average rainfall days
Vernon, IL

Average rainfall days - Vernon, IL

The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is January (7.2 days).

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Average snowfall
Vernon, IL

Average snowfall - Vernon, IL

The month with the highest snowfall is January (1.77").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days
Vernon, IL

Average snowfall days - Vernon, IL

The month with the highest number of snowfall days is January (5.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight / Average sunshine
Vernon, IL

Average daylight / Average sunshine - Vernon, IL

The month with the longest days is June (Average daylight: 14h and 50min).
The month with the shortest days is December (Average daylight: 9h and 30min).

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

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Average sunshine days
Vernon, IL

Average sunshine days - Vernon, IL

The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is May (11.5 days).

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Average UV index
Vernon, IL

Average UV index - Vernon, 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, November and December (UV index 2).

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Average visibility
Vernon, IL

Average visibility - Vernon, 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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