January weather forecast
Nason, IL

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Weather in January

January, the same as December, is another cold winter month in Nason, Illinois, with temperature in the range of an average high of 38.8°F (3.8°C) and an average low of 25.7°F (-3.5°C).

Temperature

In Nason, the lowest average temperatures are observed in January, with a high of 38.8°F (3.8°C) and a low of 25.7°F (-3.5°C).

Humidity

In January, the average relative humidity is 76%.

Rainfall

In Nason, in January, during 7.3 rainfall days, 1.06" (27mm) of precipitation is typically accumulated. Throughout the year, there are 122.7 rainfall days, and 18.03" (458mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, October through December. The month with the most snowfall is January, when snow falls for 4.5 days and typically aggregates up to 0.71" (18mm) of snow.

Daylight

In Nason, the average length of the day in January is 9h and 52min.
On the first day of the month, sunrise is at 7:12 am and sunset at 4:46 pm. On the last day of January, sunrise is at 7:01 am and sunset at 5:16 pm CST.

Sunshine

The month with the least sunshine is January, with an average of 4.5h of sunshine.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 2 during January translates into the following guidance:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Updated: Jul 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest time of year?

Nason notes the coldest temperatures in January, with a average high of 38.8°F (3.8°C) and a low of 25.7°F (-3.5°C).

How cold is January?

The average high-temperature, in January, in Nason, is 38.8°F (3.8°C), while the average low-temperature is 25.7°F (-3.5°C).

What is the average humidity in January?

In January, the average relative humidity is 76%.

How much does it rain in January?

In Nason, in January, it is raining for 7.3 days, with typically 1.06" (27mm) of accumulated precipitation.

When does it snow the most?

January is the month with the most snowfall. Snow falls for 4.5 days and accumulates 0.71" (18mm) of snow.

How much does it snow in January?

In Nason, in January, during 4.5 snowfall days, 0.71" (18mm) of snow is typically accumulated.

How many hours of daylight does Nason have in January?

In Nason, the average day length in January is 9h and 52min.

What time are sunrise and sunset in January?

On the first day of January, sunrise is at 7:12 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 5:16 pm CST.

What is the month with the least sunshine?

With an average of 4.5h of sunshine, January has the least sunshine of the year in Nason.

How many hours of sunshine does Nason have in January?

In January, the average sunshine duration is 4.5h.

When is the lowest UV index in Nason?

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.

What is the UV index intensity in January?

The average daily maximum UV index in January is 2. 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
Nason, IL

Average temperature in January - Nason, IL
  • Average high temperature in January: 38.8°F

The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in January: 25.7°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).

Average pressure in January
Nason, IL

Average pressure in January - Nason, IL
  • Average pressure in January: 30.16"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in January
Nason, IL

Average wind speed in January - Nason, IL
  • Average wind speed in January: 9.8mph

The windiest months (with the highest average wind speed) are January and February (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.9mph).

Average humidity in January
Nason, IL

Average humidity in January - Nason, IL
  • Average humidity in January: 76%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (70%).

Average rainfall in January
Nason, IL

Average rainfall in January - Nason, IL
  • Average rainfall in January: 1.06"

The wettest month (with the highest rainfall) is April (2.56").
The driest month (with the least rainfall) is September (0.98").

Average rainfall days in January
Nason, IL

Average rainfall days in January - Nason, IL
  • Average rainfall days in January: 7.3 days

The month with the highest number of rainy days is May (13.9 days).
The month with the least rainy days is January (7.3 days).

Average snowfall in January
Nason, IL

Average snowfall in January - Nason, IL
  • Average snowfall in January: 0.71"

The month with the highest snowfall is January (0.71").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in January
Nason, IL

Average snowfall days in January - Nason, IL
  • Average snowfall days in January: 4.5 days

The month with the highest number of snowfall days is January (4.5 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
Nason, IL

Average daylight in January / Average sunshine in January - Nason, IL
  • Average daylight in January: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in January: 4h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

Average sunshine days in January
Nason, IL

Average sunshine days in January - Nason, IL
  • Average sunshine days in January: 19.9 days

The month with the most sunshine days is October (21.3 days).
The month with the least sunshine days is May (13.8 days).

Average UV index in January
Nason, IL

Average UV index in January - Nason, IL
  • Average UV index in January: 2

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in January
Nason, IL

Average cloud cover in January - Nason, IL
  • Average cloud cover in January: 51

The months with the most cloud cover are January and February (Cloud cover 51).
The months with the least cloud cover are June and August (Cloud cover 28).

Average visibility in January
Nason, IL

Average visibility in January - Nason, 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).

Nason, Illinois, USA

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