January 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).

Temperature

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).

Humidity

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

Rainfall

In Sunnyside, Illinois, in January, it is raining for 5.6 days, with typically 1.54" (39mm) of accumulated precipitation. Throughout the year, in Sunnyside, Illinois, there are 152.4 rainfall days, and 28.07" (713mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. The month with the most snowfall in Sunnyside is January, when snow falls for 13.3 days and typically aggregates up to 5.16" (131mm) of snow.

Daylight

In Sunnyside, the average length of the day in January is 9h and 30min.
On the first day of January in Sunnyside, Illinois, sunrise is at 7:22 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 5:04 pm CST.

Sunshine

The month with the least sunshine in Sunnyside, Illinois, is January, with an average of 3.7h of sunshine.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index, 1 in January, converts into the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
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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.

How cold is January in Sunnyside?

In January, in Sunnyside, the average high-temperature is 26.6°F (-3°C), and the average low-temperature is 14.9°F (-9.5°C).

What is the most humid month in Sunnyside?

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

What is the average humidity in January in Sunnyside?

The average relative humidity in January in Sunnyside is 85%.

How many days does it rain in January in Sunnyside?

In Sunnyside, in January, during 5.6 rainfall days, 1.54" (39mm) of precipitation is typically accumulated.

When does it snow the most in Sunnyside?

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

How many days does it snow in January in Sunnyside?

In January, it is snowing for 13.3 days. Throughout January, 5.16" (131mm) of snow is accumulated.

How many hours of daylight does Sunnyside have in January?

The average day length in January in Sunnyside, Illinois, is 9h and 30min.

What time are sunrise and sunset in January in Sunnyside?

In January, on the first day of the month, sunrise is at 7:22 am and sunset at 4:30 pm. On the last day of the month, in Sunnyside, sunrise is at 7:07 am and sunset at 5:04 pm CST.

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 in Sunnyside, Illinois.

How long on average sun shines in January in Sunnyside?

In Sunnyside, Illinois, the average sunshine duration in January is 3.7h.

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.

What is the UV index intensity in January in Sunnyside?

In Sunnyside, the average daily maximum UV index in January is 1. A UV Index reading of 2, and below, represents a minimal hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Sunnyside, IL

Average temperature in January - Sunnyside, IL
  • Average high temperature in January: 26.6°F

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).

  • Average low temperature in January: 14.9°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 in January
Sunnyside, IL

Average pressure in January - Sunnyside, IL
  • Average pressure in January: 30.11"Hg

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 in January
Sunnyside, IL

Average wind speed in January - Sunnyside, IL
  • Average wind speed in January: 10mph

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 in January
Sunnyside, IL

Average humidity in January - Sunnyside, IL
  • Average humidity in January: 85%

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 in January
Sunnyside, IL

Average rainfall in January - Sunnyside, IL
  • Average rainfall in January: 1.54"

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 in January
Sunnyside, IL

Average rainfall days in January - Sunnyside, IL
  • Average rainfall days in January: 5.6 days

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 in January
Sunnyside, IL

Average snowfall in January - Sunnyside, IL
  • Average snowfall in January: 5.16"

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 in January
Sunnyside, IL

Average snowfall days in January - Sunnyside, IL
  • Average snowfall days in January: 13.3 days

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 in January /
Average sunshine in January
Sunnyside, IL

Average daylight in January / Average sunshine in January - Sunnyside, IL
  • Average daylight in January: 9h and 3min

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).

  • Average sunshine in January: 3h and 4min

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 in January
Sunnyside, IL

Average sunshine days in January - Sunnyside, IL
  • Average sunshine days in January: 13.7 days

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 UV index in January
Sunnyside, IL

Average UV index in January - Sunnyside, IL
  • Average UV index in January: 1

The month with the highest UV index is August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in January
Sunnyside, IL

Average cloud cover in January - Sunnyside, IL
  • Average cloud cover in January: 62

The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are August and September (Cloud cover 31).

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Average visibility in January
Sunnyside, IL

Average visibility in January - Sunnyside, IL
  • Average visibility in January: 5mi

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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