January weather forecast
Sunny Hill, IL

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Weather in January

January, like December, is a freezing cold winter month in Sunny Hill, Illinois, with an average temperature varying between 28.4°F (-2°C) and 16.2°F (-8.8°C).

Temperature

January is Sunny Hill's coldest month, registering average high temperatures of 28.4°F (-2°C) and lows of 16.2°F (-8.8°C).

Humidity

The months with the highest humidity in Sunny Hill are January and July, with an average relative humidity of 83%.

Rainfall

In January, in Sunny Hill, the rain falls for 5 days. Throughout January, 1.38" (35mm) of precipitation is accumulated. In Sunny Hill, during the entire year, the rain falls for 143.6 days and collects up to 27.99" (711mm) of precipitation.

Snowfall

Months with snowfall in Sunny Hill are January through April, October through December. The month with the most snowfall is January, when snow falls for 11.2 days and typically aggregates up to 4.09" (104mm) of snow.

Daylight

The average length of the day in January is 9h and 35min.
On the first day of January in Sunny Hill, sunrise is at 7:27 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 5:15 pm CST.

Sunshine

January has the least sunshine of the year, with an average of 4h of sunshine.

UV index

The months with the lowest UV index in Sunny Hill are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: In January, a regular UV index of 1 translates into these guidelines:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
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Frequently asked questions

What month is the coldest in Sunny Hill?

Sunny Hill's January weather reaches an average high of 28.4°F (-2°C) and an average low of 16.2°F (-8.8°C), making it the coldest month.

How cold is January in Sunny Hill?

In Sunny Hill, 28.4°F (-2°C) is the average high-temperature and 16.2°F (-8.8°C) is the average low-temperature during January.

What is the most humid month in Sunny Hill?

The months with the highest humidity in Sunny Hill are January and July, with an average relative humidity of 83%.

What is the average humidity in January in Sunny Hill?

The average relative humidity in January is 83%.

How many days does it rain in January in Sunny Hill?

In Sunny Hill, Illinois, in January, it is raining for 5 days, with typically 1.38" (35mm) of accumulated precipitation.

When does it snow the most in Sunny Hill?

January is the month with the most snowfall. Snow falls for 11.2 days and accumulates 4.09" (104mm) of snow.

How many days does it snow in January in Sunny Hill?

In Sunny Hill, Illinois, in January, snow falls for 11.2 days, with typically accumulated 4.09" (104mm) of snow.

What is the average length of the day in January in Sunny Hill?

The average day length in January is 9h and 35min.

When is the sunrise / sunset in January in Sunny Hill?

On the first day of January in Sunny Hill, Illinois, sunrise is at 7:27 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 5:15 pm CST.

What is the month with the least sunshine in Sunny Hill?

With an average of 4h of sunshine, January has the least sunshine of the year.

How long on average sun shines in January in Sunny Hill?

In Sunny Hill, Illinois, the average sunshine duration in January is 4h.

What are the months with the lowest UV index in Sunny Hill?

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

How high is the UV index in January in Sunny Hill?

In January, the average daily maximum UV index is 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe 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
Sunny Hill, IL

Average temperature in January - Sunny Hill, IL
  • Average high temperature in January: 28.4°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (28.4°F).

  • Average low temperature in January: 16.2°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).

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Average pressure in January
Sunny Hill, IL

Average pressure in January - Sunny Hill, 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 (29.9"Hg).

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Average wind speed in January
Sunny Hill, IL

Average wind speed in January - Sunny Hill, IL
  • Average wind speed in January: 10.4mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).

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Average humidity in January
Sunny Hill, IL

Average humidity in January - Sunny Hill, IL
  • Average humidity in January: 83%

The months with the highest relative humidity are January and July (83%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in January
Sunny Hill, IL

Average rainfall in January - Sunny Hill, IL
  • Average rainfall in January: 1.38"

The wettest month (with the highest rainfall) is May (4.45").
The driest month (with the least rainfall) is December (1.26").

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Average rainfall days in January
Sunny Hill, IL

Average rainfall days in January - Sunny Hill, IL
  • Average rainfall days in January: 5 days

The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (5 days).

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Average snowfall in January
Sunny Hill, IL

Average snowfall in January - Sunny Hill, IL
  • Average snowfall in January: 4.09"

The month with the highest snowfall is January (4.09").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in January
Sunny Hill, IL

Average snowfall days in January - Sunny Hill, IL
  • Average snowfall days in January: 11.2 days

The month with the highest number of snowfall days is January (11.2 days).
The months with the least snowfall days are May, June, July and August (0 days).

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Average daylight in January /
Average sunshine in January
Sunny Hill, IL

Average daylight in January / Average sunshine in January - Sunny Hill, 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 12min).

  • Average sunshine in January: 4h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

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Average sunshine days in January
Sunny Hill, IL

Average sunshine days in January - Sunny Hill, IL
  • Average sunshine days in January: 15.4 days

The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is May (10.4 days).

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Average UV index in January
Sunny Hill, IL

Average UV index in January - Sunny Hill, IL
  • Average UV index in January: 1

The month with the highest UV index is July (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
Sunny Hill, IL

Average cloud cover in January - Sunny Hill, IL
  • Average cloud cover in January: 57

The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 29).

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Average visibility in January
Sunny Hill, IL

Average visibility in January - Sunny Hill, IL
  • Average visibility in January: 6mi

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

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Sunny Hill, Illinois, USA

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