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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, the same as December, in Wellington, Illinois, is another subzero cold winter month, with temperature in the range of an average high of 31.1°F (-0.5°C) and an average low of 19.6°F (-6.9°C). In Wellington, the month of January registers the lowest temperatures, averaging 31.1°F (-0.5°C) at the peak and 19.6°F (-6.9°C) at the lowest. Weather in January »
Weather in February
The last month of the winter, February, is an icy month in Wellington, Illinois, with an average temperature varying between 23.4°F (-4.8°C) and 36°F (2.2°C). Shifting into February, Wellington records an average high-temperature of an icy 36°F (2.2°C), presenting minor fluctuations compared to the previous month. Weather in February »
Weather in March
March, the first month of the spring in Wellington, is a frosty month, with temperature in the range of an average low of 33.8°F (1°C) and an average high of 48.7°F (9.3°C). As Wellington transitions into March, the average high-temperature shows a change, moving from an icy 36°F (2.2°C) in February to a frosty 48.7°F (9.3°C). Weather in March »
Weather in April
April is a mild spring month in Wellington, Illinois, with temperature in the range of an average low of 44.4°F (6.9°C) and an average high of 60.3°F (15.7°C). Wellington, Illinois, in April shows a temperature shift, moving from an average high of a chilly 48.7°F (9.3°C) in March to a moderate 60.3°F (15.7°C). Weather in April »
Weather in May
May, the last month of the spring in Wellington, is a pleasant month, with temperature in the range of an average low of 55°F (12.8°C) and an average high of 71.6°F (22°C). The onset of May marks an increase in the average high-temperature, moving from a mild 60.3°F (15.7°C) in April to an agreeable 71.6°F (22°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Wellington, Illinois, with an average temperature fluctuating between 79.3°F (26.3°C) and 63°F (17.2°C). The embrace of June brings a minor uplift in the average high-temperature, shifting from a pleasant 71.6°F (22°C) in May to a moderately hot 79.3°F (26.3°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Wellington, Illinois, with an average temperature varying between 64.4°F (18°C) and 81°F (27.2°C). Wellington's July weather reaches an average high of 81°F (27.2°C) and an average low of 64.4°F (18°C), making it the warmest month. In July, the average heat index is estimated at a hot 87.8°F (31°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Wellington, Illinois, with an average temperature ranging between min 63°F (17.2°C) and max 80.1°F (26.7°C). The transition into August marks the average high-temperature at a still moderately hot 80.1°F (26.7°C), differing minimally from July's 81°F (27.2°C). Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Wellington, Illinois, with temperature in the range of an average high of 75.4°F (24.1°C) and an average low of 57.2°F (14°C). The dawn of September sees an average high-temperature of a still moderately hot 75.4°F (24.1°C), subtly contrasting with August's 80.1°F (26.7°C). Weather in September »
Weather in October
October, like September, in Wellington, Illinois, is another refreshing autumn month, with an average temperature varying between 62.8°F (17.1°C) and 46.9°F (8.3°C). Welcoming October, Wellington observes a shift in the average high-temperature, falling from September's moderately hot 75.4°F (24.1°C) to a comfortable 62.8°F (17.1°C). Weather in October »
Weather in November
November, the last month of the autumn in Wellington, is another chilly month, with an average temperature ranging between min 35.1°F (1.7°C) and max 48°F (8.9°C). Witnessing a clear downswing, the average high-temperature during November drops from October's refreshing 62.8°F (17.1°C) to a frosty 48°F (8.9°C). Weather in November »
Weather in December
December, the first month of the winter in Wellington, is also an icy month, with an average temperature varying between 26.8°F (-2.9°C) and 37.4°F (3°C). As December begins, there is a decrease in the average high-temperature, falling from a frosty 48°F (8.9°C) in November to an icy 37.4°F (3°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
What are the coldest months in Wellington?
The coldest time of the year in Wellington, Illinois, is January, with temperatures averaging a high of 31.1°F (-0.5°C) and a low of 19.6°F (-6.9°C).
How much does it rain in Wellington?
Throughout the year, there are 156 rainfall days, and 30.83" (783mm) of precipitation is accumulated.
When does it snow in Wellington?
Months with snowfall in Wellington are January through April, November and December.
When does it snow the most in Wellington?
The month with the most snowfall in Wellington is January, when snow falls for 10.8 days and typically aggregates up to 4.06" (103mm) of snow.
How much does it snow in Wellington?
Throughout the year, in Wellington, there are 35.7 snowfall days, and 13.27" (337mm) of snow is accumulated.
What is the month with the least sunshine in Wellington?
The month with the least sunshine is January, with an average of 3.8h of sunshine.
When is Daylight Saving Time (DST) in Wellington?
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 rainiest month in Wellington?
May is the month with the most rainfall. Rain falls for 18.8 days and accumulates 4.06" (103mm) of precipitation.
When it does not snow in Wellington?
May through October are months without snowfall in Wellington.
When are the longest days in Wellington?
June has the longest days of the year in Wellington, Illinois, with an average of 15h and 0min of daylight.
What month has the most sunshine in Wellington?
The month with the most sunshine is June, with an average of 9.8h of sunshine.
What is the month with the highest UV index in Wellington?
The months with the highest UV index in Wellington, Illinois, are June through August, with an average maximum UV index of 6.
What time of the year is the hottest in Wellington?
In Wellington, the peak temperatures are generally noted in July, averaging a high of 81°F (27.2°C) and a low of 64.4°F (18°C).
What is the most humid month in Wellington?
July is the most humid month in Wellington, Illinois, with an average relative humidity of 85%.
What is the least humid month in Wellington?
October is the least humid month in Wellington, Illinois, with an average relative humidity of 72%.
What is the driest month in Wellington?
The month with the least rainfall is December, when the rain falls for 9.8 days and typically collects 1.73" (44mm) of precipitation.
What is the month with the shortest days in Wellington?
With an average of 9h and 18min of daylight, December has the shortest days of the year.
When is the lowest UV index in Wellington?
December is the month with the lowest UV index in Wellington, with an average maximum UV index of 1.
Average temperature
Wellington, IL
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.1°F).
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).
Average pressure
Wellington, IL
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.11"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:
29.98"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Wellington, IL
- Average wind speed in January:
10.6mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10.1mph - Average wind speed in April:
10.3mph - Average wind speed in May:
8.8mph - Average wind speed in June:
7.7mph
- Average wind speed in July:
6.4mph - Average wind speed in August:
6.3mph - Average wind speed in September:
7.3mph - Average wind speed in October:
9.3mph - Average wind speed in November:
9.9mph - Average wind speed in December:
9.9mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity
Wellington, IL
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Wellington, IL
- Average rainfall in January:
1.89" - Average rainfall in February:
1.77" - Average rainfall in March:
2.83" - Average rainfall in April:
3.7" - Average rainfall in May:
4.06" - Average rainfall in June:
3.46"
- Average rainfall in July:
2.72" - Average rainfall in August:
2.36" - Average rainfall in September:
1.89" - Average rainfall in October:
2.52" - Average rainfall in November:
1.89" - Average rainfall in December:
1.73"
The wettest month (with the highest rainfall) is May (4.06").
The driest month (with the least rainfall) is December (1.73").
Average rainfall days
Wellington, IL
- Average rainfall days in January:
6.8 days - Average rainfall days in February:
7.1 days - Average rainfall days in March:
12.8 days - Average rainfall days in April:
16 days - Average rainfall days in May:
18.8 days - Average rainfall days in June:
17.8 days
- Average rainfall days in July:
17.8 days - Average rainfall days in August:
14.2 days - Average rainfall days in September:
12.2 days - Average rainfall days in October:
12.9 days - Average rainfall days in November:
9.8 days - Average rainfall days in December:
9.8 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is January (6.8 days).
Average snowfall
Wellington, IL
The month with the highest snowfall is January (4.06").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Wellington, IL
- Average snowfall days in January:
10.8 days - Average snowfall days in February:
8.6 days - Average snowfall days in March:
4.7 days - Average snowfall days in April:
1.1 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:
0.2 days - Average snowfall days in November:
2.6 days - Average snowfall days in December:
7.7 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Wellington, IL
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 3min - Average daylight in June:
15h and 0min
- 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:
9h and 5min - Average daylight in December:
9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
3h and 5min - Average sunshine in February:
3h and 5min - Average sunshine in March:
6h and 0min - Average sunshine in April:
7h and 4min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
9h and 4min - Average sunshine in August:
9h and 4min - Average sunshine in September:
8h and 3min - Average sunshine in October:
6h and 1min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 2min
The month with the most sunshine is June (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Wellington, IL
- Average sunshine days in January:
13.3 days - Average sunshine days in February:
13 days - Average sunshine days in March:
13.9 days - Average sunshine days in April:
11.1 days - Average sunshine days in May:
10.3 days - Average sunshine days in June:
10.4 days
- Average sunshine days in July:
10.5 days - Average sunshine days in August:
13.8 days - Average sunshine days in September:
15.4 days - Average sunshine days in October:
16.5 days - Average sunshine days in November:
17.8 days - Average sunshine days in December:
16.2 days
The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is May (10.3 days).
Average UV index
Wellington, IL
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Wellington, IL
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are July and August (Cloud cover 34).
Average visibility
Wellington, IL
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Wellington, Illinois, USA
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