January weather forecast
Sun River Terrace, IL

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Weather in January

January, the same as December, in Sun River Terrace, Illinois, is a freezing cold winter month, with an average temperature varying between 18.5°F (-7.5°C) and 30°F (-1.1°C).

Temperature

In Sun River Terrace, the lowest temperatures are generally noted in January, averaging a high of 30°F (-1.1°C) and a low of 18.5°F (-7.5°C).

Humidity

In January, the average relative humidity in Sun River Terrace is 82%.

Rainfall

In Sun River Terrace, during January, the rain falls for 6.4 days and regularly aggregates up to 0.79" (20mm) of precipitation. Throughout the year, there are 132 rainfall days, and 15.16" (385mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, November and December. January is the month with the most snowfall in Sun River Terrace, Illinois. Snow falls for 10.3 days and accumulates 1.42" (36mm) of snow.

Daylight

In Sun River Terrace, the average length of the day in January is 9h and 37min.
On the first day of the month, sunrise is at 7:16 am and sunset at 4:32 pm. On the last day of January, in Sun River Terrace, sunrise is at 7:02 am and sunset at 5:05 pm CST.

Sunshine

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

UV index

The months with the lowest UV index 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 average individuals.
Note: An average maximum UV index of 1 in January leads to these recommendations:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Stay sun-safe with clothing that is both closely woven and worn loosely. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the coldest in Sun River Terrace?

January, with its high-temperature average of 30°F (-1.1°C) and a low-temperature average of 18.5°F (-7.5°C), is the coldest month in Sun River Terrace, Illinois.

How cold is it in Sun River Terrace in January?

The high-temperature, in January, in Sun River Terrace, records 30°F (-1.1°C), while the low-temperature is 18.5°F (-7.5°C).

What is the average humidity in January in Sun River Terrace?

In Sun River Terrace, Illinois, the average relative humidity in January is 82%.

How many days does it rain in January in Sun River Terrace?

In Sun River Terrace, in January, it is raining for 6.4 days, with typically 0.79" (20mm) of accumulated precipitation.

When does it snow the most in Sun River Terrace?

January is the month with the most snowfall in Sun River Terrace. Snow falls for 10.3 days and accumulates 1.42" (36mm) of snow.

How much does it snow in Sun River Terrace in January?

In January, in Sun River Terrace, it is snowing for 10.3 days. Throughout January, 1.42" (36mm) of snow is accumulated.

What is the average length of the day in January in Sun River Terrace?

The average day length in January in Sun River Terrace, Illinois, is 9h and 37min.

When are sunrise and sunset in January in Sun River Terrace?

In January, on the first day of the month, sunrise is at 7:16 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 5:05 pm CST.

What is the month with the least sunshine in Sun River Terrace?

With an average of 3.7h of sunshine, January has the least sunshine of the year in Sun River Terrace, Illinois.

How many hours of sunshine does Sun River Terrace have in January?

In Sun River Terrace, the average sunshine duration in January is 3.7h.

When is the lowest UV index in Sun River Terrace?

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

How high is the UV index in January in Sun River Terrace?

In Sun River Terrace, the average daily maximum UV index in January is 1. A UV Index reading of 2, and below, represents 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
Sun River Terrace, IL

Average temperature in January - Sun River Terrace, IL
  • Average high temperature in January: 30°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°F).

  • Average low temperature in January: 18.5°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).

Average pressure in January
Sun River Terrace, IL

Average pressure in January - Sun River Terrace, IL
  • Average pressure in January: 30.12"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in January
Sun River Terrace, IL

Average wind speed in January - Sun River Terrace, IL
  • Average wind speed in January: 10.1mph

The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).

Average humidity in January
Sun River Terrace, IL

Average humidity in January - Sun River Terrace, IL
  • Average humidity in January: 82%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).

Average rainfall in January
Sun River Terrace, IL

Average rainfall in January - Sun River Terrace, IL
  • Average rainfall in January: 0.79"

The wettest month (with the highest rainfall) is May (2.2").
The driest month (with the least rainfall) is February (0.67").

Average rainfall days in January
Sun River Terrace, IL

Average rainfall days in January - Sun River Terrace, IL
  • Average rainfall days in January: 6.4 days

The month with the highest number of rainy days is July (15.7 days).
The month with the least rainy days is February (5.1 days).

Average snowfall in January
Sun River Terrace, IL

Average snowfall in January - Sun River Terrace, IL
  • Average snowfall in January: 1.42"

The month with the highest snowfall is January (1.42").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in January
Sun River Terrace, IL

Average snowfall days in January - Sun River Terrace, IL
  • Average snowfall days in January: 10.3 days

The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
Sun River Terrace, IL

Average daylight in January / Average sunshine in January - Sun River Terrace, 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 months with the most sunshine are June, July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days in January
Sun River Terrace, IL

Average sunshine days in January - Sun River Terrace, IL
  • Average sunshine days in January: 16.9 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is July (10.7 days).

Average UV index in January
Sun River Terrace, IL

Average UV index in January - Sun River Terrace, IL
  • Average UV index in January: 1

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

Average cloud cover in January
Sun River Terrace, IL

Average cloud cover in January - Sun River Terrace, IL
  • Average cloud cover in January: 60

The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in January
Sun River Terrace, IL

Average visibility in January - Sun River Terrace, 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).

Sun River Terrace, Illinois, USA

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