Climate and monthly weather forecastWilsonville, IL
Climate and monthly weather forecast
Weather in January
January, the same as December, is another cold winter month in Wilsonville, Illinois, with an average temperature ranging between min 22.6°F (-5.2°C) and max 35.6°F (2°C). January is the coldest month, exhibiting average temperatures of 35.6°F (2°C) at the peak and 22.6°F (-5.2°C) at the base. Weather in January »Weather in February
February, the last month of the winter in Wilsonville, is also a wintry month, with an average temperature ranging between max 40.6°F (4.8°C) and min 26.4°F (-3.1°C). The onset of February manifests an average high-temperature of a still icy 40.6°F (4.8°C), demonstrating a minor variation from the preceding month. Weather in February »Weather in March
March, the first month of the spring in Wilsonville, is a cool month, with an average temperature varying between 52.3°F (11.3°C) and 36.9°F (2.7°C). In Wilsonville, the average high-temperature in March rises, from a cold 40.6°F (4.8°C) in February, to a fresh 52.3°F (11.3°C). Weather in March »Weather in April
April in Wilsonville, Illinois, is an enjoyable spring month, with an average temperature fluctuating between 46.6°F (8.1°C) and 63.9°F (17.7°C). As April begins, there is an increase in the average high-temperature, moving from a cool 52.3°F (11.3°C) in March to a refreshing 63.9°F (17.7°C). Weather in April »Weather in May
The last month of the spring, May, is a moderately hot month in Wilsonville, Illinois, with an average temperature ranging between max 73.9°F (23.3°C) and min 56.7°F (13.7°C). Wilsonville sees a rise in temperature during May, with average high-temperatures transitioning from a refreshing 63.9°F (17.7°C) in April to a warm 73.9°F (23.3°C). Weather in May »Weather in June
June, the first month of the summer in Wilsonville, is also a moderately hot month, with an average temperature varying between 65.5°F (18.6°C) and 82.2°F (27.9°C). A slight uplift of average high-temperatures is noted in June, with temperatures adjusting from a moderately hot 73.9°F (23.3°C) in May to a still warm 82.2°F (27.9°C). Weather in June »Weather in July
July, like June, in Wilsonville, Illinois, is a moderately hot summer month, with an average temperature fluctuating between 67.5°F (19.7°C) and 84.2°F (29°C). In Wilsonville, temperatures reach their average annual highs in July, measuring 84.2°F (29°C) and a minimum average of 67.5°F (19.7°C). The average heat index in July is calculated to be a sweltering 95°F (35°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Wilsonville, Illinois, with an average temperature varying between 82.9°F (28.3°C) and 65.5°F (18.6°C). August ushers in an average high-temperature of a still moderately hot 82.9°F (28.3°C), aligning closely with the preceding month. Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Wilsonville, Illinois, with an average temperature ranging between min 59.4°F (15.2°C) and max 77.9°F (25.5°C). The shift into September uncovers an average high-temperature of a still moderately hot 77.9°F (25.5°C), subtly different from the previous month. Weather in September »Weather in October
October, the same as September, is another refreshing autumn month in Wilsonville, Illinois, with an average temperature fluctuating between 65.3°F (18.5°C) and 48.4°F (9.1°C). In Wilsonville, entering October brings a temperature decrement, reducing from September's moderately hot 77.9°F (25.5°C) to an enjoyable 65.3°F (18.5°C). Weather in October »Weather in November
The last month of the autumn, November, is also a fresh month in Wilsonville, Illinois, with an average temperature ranging between max 51.6°F (10.9°C) and min 36.9°F (2.7°C). The transition into November is accompanied by a temperature decrease, with the average high-temperature shifting from an enjoyable 65.3°F (18.5°C) in October to a cool 51.6°F (10.9°C). Weather in November »Weather in December
December, the first month of the winter in Wilsonville, is also an icy month, with an average temperature ranging between min 29.1°F (-1.6°C) and max 40.3°F (4.6°C). A moderate decline in the average high-temperature is seen during December, decreasing from a cool 51.6°F (10.9°C) in November to an icy 40.3°F (4.6°C). Weather in December »Updated: Feb 12, 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
During the coldest month in Wilsonville, January, temperatures average a high of 35.6°F (2°C) and a low of 22.6°F (-5.2°C).
Throughout the year, in Wilsonville, there are 121.4 rainfall days, and 14.72" (374mm) of precipitation is accumulated.
Months with snowfall are January through March, November and December.
Throughout the year, in Wilsonville, there are 19.8 snowfall days, and 2.91" (74mm) of snow is accumulated.
January has the least sunshine of the year, with an average of 4.4h of sunshine.
The months with the lowest UV index in Wilsonville are January, February, November and December, with an average maximum UV index of 2.
February is the month with the least rainfall in Wilsonville, Illinois. Rain falls for 5.9 days and accumulates 0.67" (17mm) of precipitation.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Wilsonville, 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.
April through October are months without snowfall.
The month with the most rainfall is June, when the rain falls for 13.4 days and typically aggregates up to 1.89" (48mm) of precipitation.
With an average of 14h and 54min of daylight, June has the longest days of the year in Wilsonville, Illinois.
June and July, with an average of 10.3h of sunshine, are months with the most sunshine.
The months with the highest UV index in Wilsonville are June through August, with an average maximum UV index of 6.
With average temperatures fluctuating between a high of 84.2°F (29°C) and a low of 67.5°F (19.7°C), July stands out as the warmest month in Wilsonville, Illinois.
July is the most humid month in Wilsonville, with an average relative humidity of 81%.
October is the least humid month, with an average relative humidity of 71%.
December is the month with the most snowfall in Wilsonville. Snow falls for 3.8 days and accumulates 0.98" (25mm) of snow.
The month with the shortest days is December, with an average of 9h and 30min of daylight.
Average temperature
Wilsonville, IL
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (35.6°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 (22.6°F).
Average pressure
Wilsonville, IL
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.92"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:
30.03"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Wilsonville, IL
- Average wind speed in January:
10mph - Average wind speed in February:
9.9mph - Average wind speed in March:
9.6mph - Average wind speed in April:
9.6mph - Average wind speed in May:
7.8mph - Average wind speed in June:
6.8mph
- Average wind speed in July:
5.8mph - Average wind speed in August:
5.9mph - Average wind speed in September:
6.4mph - Average wind speed in October:
8.5mph - Average wind speed in November:
9.2mph - Average wind speed in December:
9.3mph
The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).
Average humidity
Wilsonville, IL
The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Wilsonville, IL
- Average rainfall in January:
1.02" - Average rainfall in February:
0.67" - Average rainfall in March:
1.02" - Average rainfall in April:
1.57" - Average rainfall in May:
1.81" - Average rainfall in June:
1.89"
The wettest month (with the highest rainfall) is June (1.89").
The driest month (with the least rainfall) is February (0.67").
Average rainfall days
Wilsonville, IL
- Average rainfall days in January:
5.8 days - Average rainfall days in February:
5.9 days - Average rainfall days in March:
10.7 days - Average rainfall days in April:
12.5 days - Average rainfall days in May:
13.9 days - Average rainfall days in June:
13.4 days
- Average rainfall days in July:
14 days - Average rainfall days in August:
12.1 days - Average rainfall days in September:
10.4 days - Average rainfall days in October:
8.5 days - Average rainfall days in November:
7.5 days - Average rainfall days in December:
6.7 days
The month with the highest number of rainy days is July (14 days).
The month with the least rainy days is January (5.8 days).
Average snowfall
Wilsonville, IL
The month with the highest snowfall is December (0.98").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Wilsonville, IL
- Average snowfall days in January:
6.3 days - Average snowfall days in February:
5.5 days - Average snowfall days in March:
2.5 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:
0.1 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 (6.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Wilsonville, IL
- Average daylight in January:
9h and 48min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 18min - Average daylight in June:
14h and 54min
- Average daylight in July:
14h and 36min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 6min - Average daylight in December:
9h and 30min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January:
4h and 24min - Average sunshine in February:
4h and 30min - Average sunshine in March:
6h and 24min - Average sunshine in April:
8h and 18min - Average sunshine in May:
9h and 18min - Average sunshine in June:
10h and 18min
- Average sunshine in July:
10h and 18min - Average sunshine in August:
9h and 54min - Average sunshine in September:
9h and 18min - Average sunshine in October:
6h and 12min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 48min
The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days
Wilsonville, IL
- Average sunshine days in January:
20.9 days - Average sunshine days in February:
17.2 days - Average sunshine days in March:
17 days - Average sunshine days in April:
14.6 days - Average sunshine days in May:
13.6 days - Average sunshine days in June:
12.8 days
- Average sunshine days in July:
12.5 days - Average sunshine days in August:
15.3 days - Average sunshine days in September:
17.2 days - Average sunshine days in October:
19.7 days - Average sunshine days in November:
20.4 days - Average sunshine days in December:
20.5 days
The month with the most sunshine days is January (20.9 days).
The month with the least sunshine days is July (12.5 days).
Average UV index
Wilsonville, 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
Wilsonville, IL
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are June, July, August and September (Cloud cover 29).
Average visibility
Wilsonville, 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).
