Climate and monthly weather forecast
Winnebago, IL

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Weather in January

January, like December, is a freezing cold winter month in Winnebago, Illinois, with an average temperature fluctuating between 26.2°F (-3.2°C) and 13.8°F (-10.1°C). The lowest temperatures are recorded in January, with averages reaching a high of 26.2°F (-3.2°C) and a low of 13.8°F (-10.1°C). Weather in January »

Weather in February

The last month of the winter, February, is also a subzero cold month in Winnebago, Illinois, with an average temperature fluctuating between 17.1°F (-8.3°C) and 30.2°F (-1°C). February's average high-temperature stands at a still freezing cold 30.2°F (-1°C), showing little deviation from January's 26.2°F (-3.2°C). Weather in February »

Weather in March

March, the first month of the spring in Winnebago, is a chilly month, with an average temperature varying between 29.3°F (-1.5°C) and 44.2°F (6.8°C). Winnebago in March sees a temperature change, with average high-temperatures moving from a freezing cold 30.2°F (-1°C) in February to a chilly 44.2°F (6.8°C). Weather in March »

Weather in April

April is a refreshing spring month in Winnebago, Illinois, with an average temperature fluctuating between 39.7°F (4.3°C) and 55.9°F (13.3°C). Winnebago's weather in April presents a rise in the average high-temperature, moving from a frosty 44.2°F (6.8°C) in March to a refreshing 55.9°F (13.3°C). Weather in April »

Weather in May

May, the last month of the spring in Winnebago, is an agreeable month, with an average temperature fluctuating between 50.9°F (10.5°C) and 68.5°F (20.3°C). As Winnebago transitions into May, the average high-temperature is observed to rise from a refreshing 55.9°F (13.3°C) in April to a pleasant 68.5°F (20.3°C). Weather in May »

Weather in June

The first month of the summer, June, is a warm month in Winnebago, Illinois, with an average temperature ranging between min 59.7°F (15.4°C) and max 77.2°F (25.1°C). June comes with a subtle rise, with the average high-temperature adjusting from a pleasant 68.5°F (20.3°C) in May to a moderately hot 77.2°F (25.1°C). Weather in June »

Weather in July

July, like June, in Winnebago, Illinois, is a moderately hot summer month, with an average temperature ranging between max 79.9°F (26.6°C) and min 63°F (17.2°C). July is the month when Winnebago's temperatures reach their peak, with averages of 79.9°F (26.6°C) and lows of 63°F (17.2°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Winnebago, Illinois, with temperature in the range of an average high of 78.1°F (25.6°C) and an average low of 60.6°F (15.9°C). An average high-temperature of a still moderately hot 78.1°F (25.6°C) marks August, exhibiting a close resemblance to the conditions in July. Weather in August »

Weather in September

September, the first month of the autumn in Winnebago, is also an agreeable month, with an average temperature fluctuating between 54.1°F (12.3°C) and 72.7°F (22.6°C). September ushers in a minute temperature change, with average high-temperatures reducing from August's moderately hot 78.1°F (25.6°C) to an agreeable 72.7°F (22.6°C). Weather in September »

Weather in October

October, like September, is a moderate autumn month in Winnebago, Illinois, with an average temperature ranging between min 43.5°F (6.4°C) and max 59.4°F (15.2°C). The shift from September to October involves a decrease in the average high-temperature, from an agreeable 72.7°F (22.6°C) to a moderate 59.4°F (15.2°C). Weather in October »

Weather in November

November, the last month of the autumn in Winnebago, is also a frosty month, with an average temperature ranging between max 44.8°F (7.1°C) and min 31.8°F (-0.1°C). In Winnebago, the onset of November is marked by a decreased average high-temperature, declining from October's mild 59.4°F (15.2°C) to a frosty 44.8°F (7.1°C). Weather in November »

Weather in December

December, the first month of the winter in Winnebago, is also a wintry month, with an average temperature varying between 22.5°F (-5.3°C) and 32.4°F (0.2°C). December brings a drop in Winnebago's average high-temperature, falling from a chilly 44.8°F (7.1°C) in November to a wintry 32.4°F (0.2°C). Weather in December »
Updated: Jul 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month?

With an average high-temperature of 26.2°F (-3.2°C) and an average low-temperature of 13.8°F (-10.1°C), January is the coldest month.

What is the most humid month?

The most humid month is January, with an average relative humidity of 86%.

How many days does it rain?

In Winnebago, during the entire year, the rain falls for 148.1 days and collects up to 28.39" (721mm) of precipitation.

When does it snow?

Months with snowfall in Winnebago are January through April, October through December.

When does it snow the most in Winnebago?

January is the month with the most snowfall. Snow falls for 13 days and accumulates 4.88" (124mm) of snow.

How much does it snow?

In Winnebago, during the entire year, snow falls for 45.9 days and aggregates up to 15.67" (398mm) of snow.

What is the month with the least sunshine?

With an average of 3.6h of sunshine, January has the least sunshine of the year.

What are the months with the lowest UV index?

The months with the lowest UV index are January, November and December, with an average maximum UV index of 1.

What is the driest month?

The month with the least rainfall is February, when the rain falls for 4.3 days and typically collects 1.26" (32mm) of precipitation.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Winnebago, 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 are the least humid months?

April and October, with an average relative humidity of 75%, are the least humid months.

When it does not snow?

In Winnebago, snow does not fall in May through September.

What are the months with the highest UV index?

May through August, with an average maximum UV index of 5, are months with the highest UV index.

What is the wettest month?

The month with the most rainfall is June, when the rain falls for 18.1 days and typically aggregates up to 4.02" (102mm) of precipitation.

When are the longest days?

June has the longest days of the year, with an average of 15h and 12min of daylight.

What part of the year is the hottest?

July is the warmest month of the year, registering average temperatures as high as 79.9°F (26.6°C) and as low as 63°F (17.2°C).

What month has the most sunshine?

The month with the most sunshine is July, with an average of 9.7h of sunshine.

What is the month with the shortest days?

With an average of 9h and 12min of daylight, December has the shortest days of the year.

Average temperature
Winnebago, IL

Average temperature - Winnebago, IL

The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (26.2°F).

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).

Average pressure
Winnebago, IL

Average pressure - Winnebago, IL

The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed
Winnebago, IL

Average wind speed - Winnebago, IL

The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

Average humidity
Winnebago, IL

Average humidity - Winnebago, IL

The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April and October (75%).

Average rainfall
Winnebago, IL

Average rainfall - Winnebago, IL

The wettest month (with the highest rainfall) is June (4.02").
The driest month (with the least rainfall) is February (1.26").

Average rainfall days
Winnebago, IL

Average rainfall days - Winnebago, IL

The month with the highest number of rainy days is May (19 days).
The month with the least rainy days is February (4.3 days).

Average snowfall
Winnebago, IL

Average snowfall - Winnebago, IL

The month with the highest snowfall is January (4.88").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days
Winnebago, IL

Average snowfall days - Winnebago, IL

The month with the highest number of snowfall days is January (13 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight / Average sunshine
Winnebago, IL

Average daylight / Average sunshine - Winnebago, IL

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

Average sunshine days
Winnebago, IL

Average sunshine days - Winnebago, IL

The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is June (9.8 days).

Average UV index
Winnebago, IL

Average UV index - Winnebago, IL

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).

Average visibility
Winnebago, IL

Average visibility - Winnebago, IL

The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).

Winnebago, Illinois, USA

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