January weather forecast
Sugar Island, IL

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Weather in January

January, like December, is a freezing cold winter month in Sugar Island, Illinois, with temperature in the range of an average high of 30.2°F (-1°C) and an average low of 18.5°F (-7.5°C).

Temperature

The coldest time of the year is January, with temperatures averaging a high of 30.2°F (-1°C) and a low of 18.5°F (-7.5°C).

Humidity

In Sugar Island, the average relative humidity in January is 82%.

Rainfall

The months with the least rainfall are January, February and December Rain falls for 5.6 days and accumulates 1.06" (27mm) of rain.

Snowfall

Months with snowfall in Sugar Island are January through April, October through December. In Sugar Island, in January, snow falls for 10.8 days, with typically accumulated 2.28" (58mm) of snow. Throughout the year, in Sugar Island, Illinois, there are 35.3 snowfall days, and 9.37" (238mm) of snow is accumulated.

Daylight

In Sugar Island, the average length of the day in January is 9h and 38min.
On the first day of January, sunrise is at 7:16 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 5:06 pm CST.

Sunshine

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

UV index

The average daily maximum UV index in January in Sugar Island, Illinois, is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum daily UV index of 2 during January morphs into the following directions:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
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Frequently asked questions

What is the coldest time of year in Sugar Island?

Sugar Island's January weather, with an average high temperature of 30.2°F (-1°C) and an average low temperature of 18.5°F (-7.5°C), tends to be the coldest of the year.

How cold is it in Sugar Island in January?

The average high-temperature, in January, in Sugar Island, is 30.2°F (-1°C), while the average low-temperature is 18.5°F (-7.5°C).

What is the average humidity in January in Sugar Island?

The average relative humidity in January is 82%.

What is the driest month in Sugar Island?

January, February and December are months with the least rain when the rain falls for 5.6 days and typically aggregates up to 1.06" (27mm) of rain.

How many days does it rain in January in Sugar Island?

In Sugar Island, Illinois, in January, during 5.6 rainfall days, 1.06" (27mm) of precipitation is typically accumulated.

How much does it snow in Sugar Island in January?

In Sugar Island, Illinois, in January, during 10.8 snowfall days, 2.28" (58mm) of snow is typically accumulated.

How many hours of daylight does Sugar Island have in January?

The average day length in January in Sugar Island is 9h and 38min.

What time are sunrise and sunset in January in Sugar Island?

In January, on the first day of the month, sunrise is at 7:16 am and sunset at 4:33 pm. On the last day of the month, in Sugar Island, Illinois, sunrise is at 7:02 am and sunset at 5:06 pm CST.

What is the month with the least sunshine in Sugar Island?

January has the least sunshine of the year in Sugar Island, with an average of 3.7h of sunshine.

How long on average sun shines in January in Sugar Island?

In January, the average sunshine duration in Sugar Island is 3.7h.

What is the UV index intensity in January in Sugar Island?

In Sugar Island, Illinois, the average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a low health threat from exposure to Sun's UV rays.
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
Sugar Island, IL

Average temperature in January - Sugar Island, IL
  • Average high temperature in January: 30.2°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (30.2°F).

  • Average low temperature in January: 18.5°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 (18.5°F).

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Average pressure in January
Sugar Island, IL

Average pressure in January - Sugar Island, IL
  • Average pressure in January: 30.13"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in January
Sugar Island, IL

Average wind speed in January - Sugar Island, IL
  • Average wind speed in January: 10.3mph

The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

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Average humidity in January
Sugar Island, IL

Average humidity in January - Sugar Island, IL
  • Average humidity in January: 82%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in January
Sugar Island, IL

Average rainfall in January - Sugar Island, IL
  • Average rainfall in January: 1.06"

The wettest month (with the highest rainfall) is May (3.19").
The driest months (with the least rainfall) are January, February and December (1.06").

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Average rainfall days in January
Sugar Island, IL

Average rainfall days in January - Sugar Island, IL
  • Average rainfall days in January: 5.6 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is February (5.1 days).

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Average snowfall in January
Sugar Island, IL

Average snowfall in January - Sugar Island, IL
  • Average snowfall in January: 2.28"

The month with the highest snowfall is February (2.48").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in January
Sugar Island, IL

Average snowfall days in January - Sugar Island, IL
  • Average snowfall days in January: 10.8 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).

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Average daylight in January /
Average sunshine in January
Sugar Island, IL

Average daylight in January / Average sunshine in January - Sugar Island, IL
  • Average daylight in January: 9h and 4min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in January: 3h and 4min

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

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Average sunshine days in January
Sugar Island, IL

Average sunshine days in January - Sugar Island, IL
  • Average sunshine days in January: 16.6 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (10 days).

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Average UV index in January
Sugar Island, IL

Average UV index in January - Sugar Island, IL
  • Average UV index in January: 2

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

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Average cloud cover in January
Sugar Island, IL

Average cloud cover in January - Sugar Island, IL
  • Average cloud cover in January: 60

The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 34).

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Average visibility in January
Sugar Island, IL

Average visibility in January - Sugar Island, IL
  • Average visibility in January: 6mi

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).

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Sugar Island, Illinois, USA

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