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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 Vernon, Illinois, is a wintry winter month, with an average temperature fluctuating between 37°F (2.8°C) and 24.3°F (-4.3°C). January, on average, is the coldest month, registering a high temperature of 37°F (2.8°C) and a low of 24.3°F (-4.3°C). Weather in January »
Weather in February
February, the last month of the winter in Vernon, is another cold month, with temperature in the range of an average low of 27.9°F (-2.3°C) and an average high of 41.9°F (5.5°C). The transition into February shows a subtle variation to a still icy 41.9°F (5.5°C) from January's 37°F (2.8°C) in the average high-temperature. Weather in February »
Weather in March
The first month of the spring, March, is a cool month in Vernon, Illinois, with an average temperature fluctuating between 53.2°F (11.8°C) and 37.6°F (3.1°C). In Vernon, the average high-temperature in March rises, from a wintry 41.9°F (5.5°C) in February, to a cool 53.2°F (11.8°C). Weather in March »
Weather in April
April is a refreshing spring month in Vernon, Illinois, with an average temperature varying between 47.5°F (8.6°C) and 64.4°F (18°C). April's arrival brings a change in high-temperatures, moving 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 varying between 74.1°F (23.4°C) and 57.7°F (14.3°C). Vernon's weather in May shows a rise in the average high-temperature, moving up from April's comfortable 64.4°F (18°C) to a warm 74.1°F (23.4°C). Weather in May »
Weather in June
June, the first month of the summer in Vernon, is also a moderately hot month, with temperature in the range of an average high of 83.1°F (28.4°C) and an average low of 66.4°F (19.1°C). The shift into June is characterized by a rise in the average high-temperature, transitioning from May's warm 74.1°F (23.4°C) 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 temperature in the range of an average high of 84.7°F (29.3°C) and an average low of 67.5°F (19.7°C). Temperature records mark July as the warmest month, with highs averaging 84.7°F (29.3°C) and lows at 67.5°F (19.7°C). The heat index value for July is appraised at a very hot 96.8°F (36°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Vernon, Illinois, with an average temperature ranging between min 65.8°F (18.8°C) and max 83.5°F (28.6°C). Vernon observes an average high-temperature of a still moderately hot 83.5°F (28.6°C) in August, barely different from 84.7°F (29.3°C) in July. Weather in August »
Weather in September
September, the first month of the autumn in Vernon, is still a warm month, with an average temperature ranging between min 59.7°F (15.4°C) and max 78.3°F (25.7°C). The advent of September brings an average high-temperature of a still moderately hot 78.3°F (25.7°C), exhibiting minor difference from the previous month. Weather in September »
Weather in October
October, the same as September, is another comfortable autumn month in Vernon, Illinois, with an average temperature fluctuating between 66.2°F (19°C) and 49.1°F (9.5°C). With October's onset, the weather shows a temperature decrease, transitioning from a moderately hot 78.3°F (25.7°C) in September to an enjoyable 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 52.2°F (11.2°C) and 37.9°F (3.3°C). Vernon's November weather comes with a decrease in average high-temperatures, moving from a comfortable 66.2°F (19°C) in October to a cool 52.2°F (11.2°C). Weather in November »
Weather in December
December, the first month of the winter in Vernon, is also an icy month, with an average temperature varying between 41.9°F (5.5°C) and 30.6°F (-0.8°C). The transition into December involves a decrease in the average high-temperature, falling from a cool 52.2°F (11.2°C) in November to a cold 41.9°F (5.5°C). Weather in December »
Updated: Jun 17, 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, with its high-temperature average of 37°F (2.8°C) and a low-temperature average of 24.3°F (-4.3°C), is the coldest month.
How many days does it rain?
Throughout the year, there are 145.5 rainfall days, and 28.39" (721mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through April, November and December.
When does it snow the most?
January is the month with the most snowfall. Snow falls for 5.8 days and accumulates 1.77" (45mm) of snow.
How much does it snow?
In Vernon, 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?
With an average of 4.5h of sunshine, January has the least sunshine of the year.
What is the month with the lowest UV index in Vernon?
January, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the driest month in Vernon?
February is the month with the least rainfall. Rain falls for 8.6 days and accumulates 1.46" (37mm) of precipitation.
When is Daylight Saving Time (DST)?
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 most humid month?
May, July and August, with an average relative humidity of 80%, are most humid months.
When it does not snow?
In Vernon, snow does not fall in May through October.
What is the rainiest month?
June is the month with the most rainfall. Rain falls for 15.1 days and accumulates 3.43" (87mm) of precipitation.
When are the longest days?
With an average of 14h and 48min of daylight, June has the longest days of the year.
What month has the most sunshine?
June has the most sunshine of the year, with an average of 10.5h of sunshine.
What are the months with the highest UV index?
June through August, with an average maximum UV index of 6, are months with the highest UV index.
What is the hottest time of year?
Temperature records mark July as the warmest month, with highs averaging 84.7°F (29.3°C) and lows at 67.5°F (19.7°C).
What is the least humid month?
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.
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).
Average pressure
Vernon, IL
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.93"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:
30.04"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Vernon, IL
- Average wind speed in January:
10mph - Average wind speed in February:
10mph - Average wind speed in March:
9.8mph - Average wind speed in April:
9.6mph - Average wind speed in May:
8mph - Average wind speed in June:
7mph
- Average wind speed in July:
5.8mph - Average wind speed in August:
5.9mph - Average wind speed in September:
6.5mph - Average wind speed in October:
8.4mph - Average wind speed in November:
9.1mph - Average wind speed in December:
9.2mph
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).
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%).
Average rainfall
Vernon, IL
- Average rainfall in January:
1.85" - Average rainfall in February:
1.46" - Average rainfall in March:
2.36" - Average rainfall in April:
3.35" - Average rainfall in May:
3.03" - Average rainfall in June:
3.43"
- Average rainfall in July:
2.76" - Average rainfall in August:
2.64" - Average rainfall in September:
1.69" - Average rainfall in October:
2.13" - Average rainfall in November:
1.85" - Average rainfall in December:
1.85"
The wettest month (with the highest rainfall) is June (3.43").
The driest month (with the least rainfall) is February (1.46").
Average rainfall days
Vernon, IL
- Average rainfall days in January:
7.2 days - Average rainfall days in February:
8.6 days - Average rainfall days in March:
13.9 days - Average rainfall days in April:
14.1 days - Average rainfall days in May:
16.7 days - Average rainfall days in June:
15.1 days
- Average rainfall days in July:
16.5 days - Average rainfall days in August:
13.6 days - Average rainfall days in September:
11.7 days - Average rainfall days in October:
9.9 days - Average rainfall days in November:
9.5 days - Average rainfall days in December:
8.7 days
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).
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").
Average snowfall days
Vernon, IL
- Average snowfall days in January:
5.8 days - Average snowfall days in February:
4.8 days - Average snowfall days in March:
2.3 days - Average snowfall days in April:
0.3 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 days - Average snowfall days in November:
0.9 days - Average snowfall days in December:
3.6 days
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).
Average daylight / Average sunshine
Vernon, IL
- Average daylight in January:
9h and 5min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 2min - Average daylight in June:
14h and 5min
- 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 1min - Average daylight in December:
9h and 3min
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 30min).
- Average sunshine in January:
4h and 3min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 2min - Average sunshine in May:
9h and 1min - Average sunshine in June:
10h and 3min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
10h and 1min - Average sunshine in September:
9h and 1min - Average sunshine in October:
6h and 2min - Average sunshine in November:
5h and 4min - Average sunshine in December:
4h and 5min
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).
Average sunshine days
Vernon, IL
- Average sunshine days in January:
19.3 days - Average sunshine days in February:
15.3 days - Average sunshine days in March:
14.8 days - Average sunshine days in April:
13.8 days - Average sunshine days in May:
11.5 days - Average sunshine days in June:
12.3 days
- Average sunshine days in July:
12.3 days - Average sunshine days in August:
14 days - Average sunshine days in September:
15.7 days - Average sunshine days in October:
19.5 days - Average sunshine days in November:
18.9 days - Average sunshine days in December:
19.1 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is May (11.5 days).
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).
Average cloud cover
Vernon, IL
The months with the most cloud cover are January and February (Cloud cover 51).
The months with the least cloud cover are June and August (Cloud cover 28).
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).
Vernon, Illinois, USA
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