Climate and monthly weather forecast
Sunnyside, IL

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Weather in January

January, like December, is a freezing cold winter month in Sunnyside, Illinois, with an average temperature fluctuating between 26.6°F (-3°C) and 14.9°F (-9.5°C). In Sunnyside, Illinois, the lowest temperatures are generally noted in January, averaging a high of 26.6°F (-3°C) and a low of 14.9°F (-9.5°C). Weather in January »

Weather in February

The last month of the winter, February, is another freezing cold month in Sunnyside, Illinois, with an average temperature varying between 30.2°F (-1°C) and 18°F (-7.8°C). Sunnyside, Illinois, signifies an average high-temperature of a still subzero cold 30.2°F (-1°C) in February, closely mirroring the 26.6°F (-3°C) of January. Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in Sunnyside, Illinois, with an average temperature fluctuating between 28.9°F (-1.7°C) and 42.8°F (6°C). Observing a rise in March, the average high-temperature goes from February's subzero cold 30.2°F (-1°C) to a frosty 42.8°F (6°C). Weather in March »

Weather in April

April in Sunnyside, Illinois, is a fresh spring month, with an average temperature fluctuating between 54.3°F (12.4°C) and 38.3°F (3.5°C). As March gives way to April, the average high-temperature displays an increase, moving from a frosty 42.8°F (6°C) to a cool 54.3°F (12.4°C). Weather in April »

Weather in May

The last month of the spring, May, is a comfortable month in Sunnyside, Illinois, with temperature in the range of an average low of 49.3°F (9.6°C) and an average high of 66.4°F (19.1°C). The onset of May brings a rise in the average high-temperature, elevating from a fresh 54.3°F (12.4°C) in April to an enjoyable 66.4°F (19.1°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Sunnyside, Illinois, with an average temperature fluctuating between 58.5°F (14.7°C) and 75.6°F (24.2°C). With the onset of June, Sunnyside experiences a temperature shift, with the average high-temperature moving from a comfortable 66.4°F (19.1°C) in May to a moderately hot 75.6°F (24.2°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Sunnyside, Illinois, with an average temperature fluctuating between 63.1°F (17.3°C) and 79.7°F (26.5°C). In Sunnyside, July is the warmest month, with temperatures averaging a high of 79.7°F (26.5°C) and a low of 63.1°F (17.3°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Sunnyside, Illinois, with temperature in the range of an average high of 78.1°F (25.6°C) and an average low of 61.3°F (16.3°C). The onset of August notes an average high-temperature of a still warm 78.1°F (25.6°C), subtly shifted from July's 79.7°F (26.5°C). Weather in August »

Weather in September

September, the first month of the autumn in Sunnyside, is also an agreeable month, with an average temperature varying between 72.3°F (22.4°C) and 55°F (12.8°C). Start of September brings a slight shift in the average high-temperature, dipping a bit from August's moderately hot 78.1°F (25.6°C) to an agreeable 72.3°F (22.4°C). Weather in September »

Weather in October

October, like September, is a moderate autumn month in Sunnyside, Illinois, with temperature in the range of an average low of 43.9°F (6.6°C) and an average high of 58.6°F (14.8°C). October ushers in a slight temperature change, with average high-temperatures reducing from September's pleasant 72.3°F (22.4°C) to a refreshing 58.6°F (14.8°C). Weather in October »

Weather in November

November, the last month of the autumn in Sunnyside, is also a frosty month, with temperature in the range of an average high of 44.6°F (7°C) and an average low of 32.2°F (0.1°C). November weather is marked by a drop in the average high-temperature, falling from a moderate 58.6°F (14.8°C) in October to a frosty 44.6°F (7°C). Weather in November »

Weather in December

The first month of the winter, December, is also an icy month in Sunnyside, Illinois, with temperature in the range of an average low of 22.8°F (-5.1°C) and an average high of 32.7°F (0.4°C). The move into December indicates a reduction in the average high-temperature, down from November's chilly 44.6°F (7°C) to a cold 32.7°F (0.4°C). Weather in December »
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Frequently asked questions

What month is the coldest in Sunnyside?

Sunnyside's January weather, with an average high temperature of 26.6°F (-3°C) and an average low temperature of 14.9°F (-9.5°C), tends to be the coldest of the year.

What is the most humid month in Sunnyside?

January and February, with an average relative humidity of 85%, are most humid months in Sunnyside.

How many days does it rain in Sunnyside?

Throughout the year, in Sunnyside, Illinois, there are 152.4 rainfall days, and 28.07" (713mm) of precipitation is accumulated.

When does it snow in Sunnyside?

January through May, October through December are months with snowfall.

When does it snow the most in Sunnyside?

January is the month with the most snowfall in Sunnyside. Snow falls for 13.3 days and accumulates 5.16" (131mm) of snow.

How many days does it snow in Sunnyside?

In Sunnyside, during the entire year, snow falls for 49 days and aggregates up to 16.5" (419mm) of snow.

What is the month with the least sunshine in Sunnyside?

With an average of 3.7h of sunshine, January has the least sunshine of the year.

When is the lowest UV index in Sunnyside?

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

When is Daylight Saving Time (DST) in Sunnyside?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Sunnyside, Illinois, 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 Sunnyside?

June is the month with the most rainfall in Sunnyside, Illinois. Rain falls for 17.2 days and accumulates 3.58" (91mm) of precipitation.

When it does not snow in Sunnyside?

In Sunnyside, snow does not fall in June through September.

When are the longest days in Sunnyside?

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

What part of the year is the hottest in Sunnyside?

Sunnyside's warmest weather arrives in July, when temperatures average a high of 79.7°F (26.5°C) and a low of 63.1°F (17.3°C).

What is the month with the most sunshine in Sunnyside?

July and August, with an average of 10h of sunshine, are months with the most sunshine in Sunnyside, Illinois.

What is the month with the highest UV index in Sunnyside?

With an average maximum UV index of 6, August is the month with the highest UV index in Sunnyside, Illinois.

What is the least humid month in Sunnyside?

The least humid month is October, with an average relative humidity of 76%.

What is the driest month in Sunnyside?

December is the month with the least rainfall. Rain falls for 7.9 days and accumulates 1.34" (34mm) of precipitation.

What is the month with the shortest days in Sunnyside?

December has the shortest days of the year, with an average of 9h and 6min of daylight.

Average temperature
Sunnyside, IL

Average temperature - Sunnyside, IL

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (26.6°F).

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).

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Average pressure
Sunnyside, IL

Average pressure - Sunnyside, IL

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed
Sunnyside, IL

Average wind speed - Sunnyside, IL

The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

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Average humidity
Sunnyside, IL

Average humidity - Sunnyside, IL

The months with the highest relative humidity are January and February (85%).
The month with the lowest relative humidity is October (76%).

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Average rainfall
Sunnyside, IL

Average rainfall - Sunnyside, IL

The wettest month (with the highest rainfall) is June (3.58").
The driest month (with the least rainfall) is December (1.34").

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Average rainfall days
Sunnyside, IL

Average rainfall days - Sunnyside, IL

The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is February (4.9 days).

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Average snowfall
Sunnyside, IL

Average snowfall - Sunnyside, IL

The month with the highest snowfall is January (5.16").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Sunnyside, IL

Average snowfall days - Sunnyside, IL

The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Sunnyside, IL

Average daylight / Average sunshine - Sunnyside, 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 6min).

The months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days
Sunnyside, IL

Average sunshine days - Sunnyside, IL

The month with the most sunshine days is November (16 days).
The month with the least sunshine days is June (10.2 days).

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Average visibility
Sunnyside, IL

Average visibility - Sunnyside, IL

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

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Sunnyside, Illinois, USA

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