January weather forecast
Byron, IL

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Weather in January

January, like December, is a freezing cold winter month in Byron, Illinois, with an average temperature varying between 26.2°F (-3.2°C) and 14°F (-10°C).

Temperature

Byron's January weather, with an average high temperature of 26.2°F (-3.2°C) and an average low temperature of 14°F (-10°C), tends to be the coldest of the year.

Humidity

With an average relative humidity of 86%, January is the most humid month.

Rainfall

January and February are months with the least rain when the rain falls for 3.2 days and typically aggregates up to 0.35" (9mm) of rain.

Snowfall

Months with snowfall are January through April, October through December. The month with the most snowfall is January, when snow falls for 8.1 days and typically aggregates up to 1.42" (36mm) of snow.

Daylight

In January, the average length of the day is 9h and 31min.
On the first day of January in Byron, sunrise is at 7:25 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 5:09 pm CST.

Sunshine

The month with the least sunshine in Byron is January, 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 of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for average individuals.
Note: A maximum high daily UV index of 1 during January translates into the following directions:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
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Frequently asked questions

What month is the coldest in Byron?

January, having an average high-temperature of 26.2°F (-3.2°C) and an average low-temperature of 14°F (-10°C), is the coldest month in Byron, Illinois.

How cold is January in Byron?

The high-temperature, in January, in Byron, records 26.2°F (-3.2°C), while the low-temperature is 14°F (-10°C).

What is the most humid month in Byron?

The most humid month in Byron, Illinois, is January, with an average relative humidity of 86%.

What is the average humidity in January in Byron?

The average relative humidity in January in Byron is 86%.

What is the driest month in Byron?

The months with the least rainfall are January and February Rain falls for 3.2 days and accumulates 0.35" (9mm) of rain.

How much does it rain in Byron in January?

In Byron, Illinois, in January, during 3.2 rainfall days, 0.35" (9mm) of precipitation is typically accumulated.

What is the snowiest month in Byron?

The month with the most snowfall in Byron is January, when snow falls for 8.1 days and typically aggregates up to 1.42" (36mm) of snow.

How many days does it snow in January in Byron?

In Byron, during January, snow falls for 8.1 days and regularly aggregates up to 1.42" (36mm) of snow.

How many hours of daylight does Byron have in January?

In January, the average day length is 9h and 31min.

When is the sunrise / sunset in January in Byron?

On the first day of January, sunrise is at 7:25 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 5:09 pm CST.

What is the month with the least sunshine in Byron?

With an average of 3.7h of sunshine, January has the least sunshine of the year in Byron.

How many hours of sunshine does Byron have in January?

The average sunshine duration in January is 3.7h.

When is the lowest UV index in Byron?

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

How high is the UV index in January in Byron?

The average daily maximum UV index in January is 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to 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
Byron, IL

Average temperature in January - Byron, IL
  • Average high temperature in January: 26.2°F

The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (26.2°F).

  • Average low temperature in January: 14°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°F).

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Average pressure in January
Byron, IL

Average pressure in January - Byron, 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 (29.91"Hg).

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Average wind speed in January
Byron, IL

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

The windiest month (with the highest average wind speed) is April (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

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Average humidity in January
Byron, IL

Average humidity in January - Byron, IL
  • Average humidity in January: 86%

The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April and October (75%).

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Average rainfall in January
Byron, IL

Average rainfall in January - Byron, IL
  • Average rainfall in January: 0.35"

The wettest month (with the highest rainfall) is May (1.18").
The driest months (with the least rainfall) are January and February (0.35").

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Average rainfall days in January
Byron, IL

Average rainfall days in January - Byron, IL
  • Average rainfall days in January: 3.2 days

The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is January (3.2 days).

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Average snowfall in January
Byron, IL

Average snowfall in January - Byron, 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 and September (0").

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Average snowfall days in January
Byron, IL

Average snowfall days in January - Byron, IL
  • Average snowfall days in January: 8.1 days

The month with the highest number of snowfall days is January (8.1 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
Byron, IL

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

  • Average sunshine in January: 3h and 4min

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days in January
Byron, IL

Average sunshine days in January - Byron, IL
  • Average sunshine days in January: 21.9 days

The month with the most sunshine days is December (22.6 days).
The month with the least sunshine days is June (12.8 days).

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Average UV index in January
Byron, IL

Average UV index in January - Byron, 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
Byron, IL

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

The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is September (Cloud cover 33).

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Average visibility in January
Byron, IL

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

The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).

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Byron, Illinois, USA

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