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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 Willisville, Illinois, is another cold winter month, with an average temperature varying between 25.7°F (-3.5°C) and 39°F (3.9°C). With an average high-temperature of 39°F (3.9°C) and an average low-temperature of 25.7°F (-3.5°C), January is the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is a chilly month in Willisville, Illinois, with an average temperature fluctuating between 43.9°F (6.6°C) and 29.1°F (-1.6°C). February's advent presents an average high-temperature of a frosty 43.9°F (6.6°C), indicating a slight variation from the conditions of the previous month. Weather in February »
Weather in March
The first month of the spring, March, is a cool month in Willisville, Illinois, with an average temperature fluctuating between 55°F (12.8°C) and 38.8°F (3.8°C). Willisville's March weather brings a rise in high-temperatures, moving from a chilly 43.9°F (6.6°C) in February to a cool 55°F (12.8°C). Weather in March »
Weather in April
April is an enjoyable spring month in Willisville, Illinois, with an average temperature ranging between min 48.4°F (9.1°C) and max 66°F (18.9°C). An upsurge in temperatures occurs as March gives way to April, with average highs shifting from a fresh 55°F (12.8°C) to a comfortable 66°F (18.9°C). Weather in April »
Weather in May
The last month of the spring, May, is a moderately hot month in Willisville, Illinois, with temperature in the range of an average low of 57.9°F (14.4°C) and an average high of 75.7°F (24.3°C). The arrival of May sees a shift in the average high-temperature, moving from a refreshing 66°F (18.9°C) in April to a warm 75.7°F (24.3°C). Weather in May »
Weather in June
The first month of the summer, June, is still a warm month in Willisville, Illinois, with an average temperature fluctuating between 66.6°F (19.2°C) and 84.7°F (29.3°C). Willisville's transition into June is marked by a rise in the average high-temperature, advancing from a warm 75.7°F (24.3°C) in May to a still moderately hot 84.7°F (29.3°C). Weather in June »
Weather in July
July is a tropical summer month in Willisville, Illinois, with an average temperature varying between 87.3°F (30.7°C) and 68.5°F (20.3°C). Willisville witnesses the warmest weather in July, with temperatures averaging a high of 87.3°F (30.7°C) and a low of 68.5°F (20.3°C). The average heat index in July is evaluated at a fiery hot 102.2°F (39°C). Weather in July »
Weather in August
August, the last month of the summer in Willisville, is also a moderately hot month, with an average temperature ranging between min 65.8°F (18.8°C) and max 85.6°F (29.8°C). The advent of August reveals an average high-temperature of a moderately hot 85.6°F (29.8°C), showing minimal difference from the prior month. Weather in August »
Weather in September
September, the first month of the autumn in Willisville, is still a warm month, with temperature in the range of an average low of 60.1°F (15.6°C) and an average high of 79.7°F (26.5°C). A subtle shift in Willisville's weather is observed as August turns into September, with the average high temperature reducing from 85.6°F (29.8°C) to a still warm 79.7°F (26.5°C). Weather in September »
Weather in October
October, like September, in Willisville, Illinois, is another refreshing autumn month, with temperature in the range of an average low of 49.1°F (9.5°C) and an average high of 67.1°F (19.5°C). In October, the meteorological conditions alter, with the average high-temperature shifting from a moderately hot 79.7°F (26.5°C) in September to an enjoyable 67.1°F (19.5°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a fresh month in Willisville, Illinois, with temperature in the range of an average high of 53.8°F (12.1°C) and an average low of 38.3°F (3.5°C). Willisville in November experiences a subtle temperature decline, with average high-temperatures reducing from a comfortable 67.1°F (19.5°C) in October to a fresh 53.8°F (12.1°C). Weather in November »
Weather in December
December, the first month of the winter in Willisville, is also a frosty month, with an average temperature fluctuating between 31.1°F (-0.5°C) and 43.7°F (6.5°C). Onset of December comes with a temperature decline, the average high falling from a fresh 53.8°F (12.1°C) in November to a chilly 43.7°F (6.5°C). Weather in December »
Updated: Aug 14, 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 part of the year is the coldest?
The coldest period tends to be January, when average temperatures fluctuate between a high of 39°F (3.9°C) and a low of 25.7°F (-3.5°C).
How much does it rain?
Throughout the year, there are 159.4 rainfall days, and 37.2" (945mm) of precipitation is accumulated.
When does it snow?
January through April, October through December are months with snowfall.
What is the snowiest month?
The month with the most snowfall is January, when snow falls for 7.1 days and typically aggregates up to 2.64" (67mm) of snow.
How much does it snow?
Throughout the year, in Willisville, there are 20.9 snowfall days, and 8.11" (206mm) of snow is accumulated.
What is the month with the least sunshine?
January has the least sunshine of the year in Willisville, with an average of 4.6h of sunshine.
When is the lowest UV index?
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Willisville.
What is the driest month?
The months with the least rainfall are February and September Rain falls for 9.6 days and accumulates 2.13" (54mm) of rain.
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?
With an average relative humidity of 79%, May is the most humid month.
What is the rainiest month?
The month with the most rainfall in Willisville is May, when the rain falls for 18.3 days and typically aggregates up to 4.49" (114mm) of precipitation.
When it does not snow?
May through September are months without snowfall.
When are the longest days?
June has the longest days of the year, with an average of 14h and 48min of daylight.
What month has the most sunshine?
The month with the most sunshine is June, with an average of 10.5h of sunshine.
What is the month with the highest UV index?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What time of the year is the hottest in Willisville?
Willisville's temperature records reveal July as the warmest month, marked by average highs of 87.3°F (30.7°C) and lows of 68.5°F (20.3°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?
The month with the shortest days is December, with an average of 9h and 36min of daylight.
Average temperature
Willisville, IL
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (39°F).
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure
Willisville, 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:
30.02"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.14"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
Willisville, IL
- Average wind speed in January:
9.5mph - Average wind speed in February:
9.4mph - Average wind speed in March:
9.2mph - Average wind speed in April:
9.1mph - Average wind speed in May:
7.5mph - Average wind speed in June:
6.5mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.7mph - Average wind speed in September:
6.1mph - Average wind speed in October:
7.8mph - Average wind speed in November:
8.5mph - Average wind speed in December:
8.8mph
The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity
Willisville, IL
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Willisville, IL
- Average rainfall in January:
2.24" - Average rainfall in February:
2.13" - Average rainfall in March:
3.07" - Average rainfall in April:
4.41" - Average rainfall in May:
4.49" - Average rainfall in June:
4.02"
- Average rainfall in July:
3.39" - Average rainfall in August:
3.31" - Average rainfall in September:
2.13" - Average rainfall in October:
3.03" - Average rainfall in November:
2.44" - Average rainfall in December:
2.56"
The wettest month (with the highest rainfall) is May (4.49").
The driest months (with the least rainfall) are February and September (2.13").
Average rainfall days
Willisville, IL
- Average rainfall days in January:
8.3 days - Average rainfall days in February:
9.6 days - Average rainfall days in March:
15.4 days - Average rainfall days in April:
16.3 days - Average rainfall days in May:
18.3 days - Average rainfall days in June:
16.5 days
- Average rainfall days in July:
17.3 days - Average rainfall days in August:
14.5 days - Average rainfall days in September:
12.6 days - Average rainfall days in October:
11.2 days - Average rainfall days in November:
10.5 days - Average rainfall days in December:
8.9 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (8.3 days).
Average snowfall
Willisville, IL
The month with the highest snowfall is January (2.64").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Willisville, IL
- Average snowfall days in January:
7.1 days - Average snowfall days in February:
5.9 days - Average snowfall days in March:
2.3 days - Average snowfall days in April:
0.4 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:
0.1 days - Average snowfall days in November:
1.3 days - Average snowfall days in December:
3.8 days
The month with the highest number of snowfall days is January (7.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Willisville, 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 1min - Average daylight in June:
14h and 5min
- Average daylight in July:
14h and 3min - 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 4min
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).
- Average sunshine in January:
4h and 4min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 3min - 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 0min - Average sunshine in September:
9h and 1min - Average sunshine in October:
6h and 2min - Average sunshine in November:
5h and 3min - 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 36min).
Average sunshine days
Willisville, IL
- Average sunshine days in January:
16.9 days - Average sunshine days in February:
13.3 days - Average sunshine days in March:
12.8 days - Average sunshine days in April:
11.9 days - Average sunshine days in May:
10.4 days - Average sunshine days in June:
10.7 days
- Average sunshine days in July:
11.3 days - Average sunshine days in August:
12.9 days - Average sunshine days in September:
14.7 days - Average sunshine days in October:
17.6 days - Average sunshine days in November:
17.5 days - Average sunshine days in December:
18.2 days
The month with the most sunshine days is December (18.2 days).
The month with the least sunshine days is May (10.4 days).
Average UV index
Willisville, 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 and December (UV index 2).
Average cloud cover
Willisville, IL
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility
Willisville, 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).
Willisville, Illinois, USA
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