January weather forecast
Byron, WI

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Weather in January

January, the same as December, in Byron, Wisconsin, is a freezing cold winter month, with an average temperature varying between 22.5°F (-5.3°C) and 10.8°F (-11.8°C).

Temperature

In Byron, the month of January registers the lowest temperatures, averaging 22.5°F (-5.3°C) at the peak and 10.8°F (-11.8°C) at the lowest.

Humidity

With an average relative humidity of 89%, January is the most humid month in Byron.

Rainfall

The months with the least rainfall are January and February Rain falls for 3.3 days and accumulates 0.31" (8mm) of rain.

Snowfall

January through April, October through December are months with snowfall. The month with the most snowfall is January, when snow falls for 10.5 days and typically aggregates up to 1.06" (27mm) of snow.

Daylight

In January, the average length of the day is 9h and 23min.
On the first day of January in Byron, sunrise is at 7:27 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 5:02 pm CST.

Sunshine

January has the least sunshine of the year, with an average of 3.4h of sunshine.

UV index

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Byron. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index of 1 in January interprets into the following recommendations:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
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Frequently asked questions

What time of the year is the coldest in Byron?

The coldest period in Byron is January, when temperatures fluctuate between an average high of 22.5°F (-5.3°C) and a low of 10.8°F (-11.8°C).

How cold is January in Byron?

The high-temperature, in January, in Byron, records 22.5°F (-5.3°C), while the low-temperature is 10.8°F (-11.8°C).

What is the most humid month in Byron?

January is the most humid month in Byron, with an average relative humidity of 89%.

What is the average humidity in January in Byron?

In January, the average relative humidity is 89%.

What is the driest month in Byron?

The months with the least rainfall are January and February Rain falls for 3.3 days and accumulates 0.31" (8mm) of rain.

How much does it rain in Byron in January?

In Byron, Wisconsin, during January, the rain falls for 3.3 days and regularly aggregates up to 0.31" (8mm) of precipitation.

What is the snowiest month in Byron?

January is the month with the most snowfall. Snow falls for 10.5 days and accumulates 1.06" (27mm) of snow.

How much does it snow in Byron in January?

In Byron, in January, snow falls for 10.5 days, with typically accumulated 1.06" (27mm) of snow.

What is the average length of the day in January in Byron?

In January, the average day length in Byron, Wisconsin, is 9h and 23min.

When are sunrise and sunset in January in Byron?

In January, on the first day of the month, sunrise is at 7:27 am and sunset at 4:27 pm. On the last day of the month, in Byron, Wisconsin, sunrise is at 7:11 am and sunset at 5:02 pm CST.

What is the month with the least sunshine in Byron?

January has the least sunshine of the year in Byron, with an average of 3.4h of sunshine.

How long on average sun shines in January in Byron?

The average sunshine duration in January in Byron, Wisconsin, is 3.4h.

When is the lowest UV index in Byron?

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

What is the UV index intensity in January in Byron?

In January, the average daily maximum UV index in Byron, Wisconsin, is 1. A UV Index reading of 2, and below, represents a minimal hazard to health from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
29.1°F -1.6°C
22.5°F -5.3°C
25.7°F -3.5°C
Average low temperature
19.4°F -7°C
10.8°F -11.8°C
13.3°F -10.4°C
Average pressure
30.08" 764mmHg
30.09" 764mmHg
30.09" 764mmHg
Average wind speed
9.9mph 15.9km/h
10.3mph 16.6km/h
10.3mph 16.6km/h
Average max. wind speed
10.7mph 17.2km/h
10.9mph 17.5km/h
10.9mph 17.5km/h
Average wind speed gusts
15.8mph 25.4km/h
16.3mph 26.2km/h
16.6mph 26.7km/h
Average humidity
86%
89%
88%
Average rainfall
0.35" 9mm
0.31" 8mm
0.31" 8mm
Average rainfall days
3.7
3.3
2.3
Average snowfall
0.67" 17mm
1.06" 27mm
0.94" 24mm
Average snowfall days
9.3
10.5
9.3
Average daylight
9h 0min
9h 2min
10h 3min
Average sunshine
3h 4min
3h 2min
3h 3min
Average sunshine days
21.5
20.8
18.4
Average UV index
1
1
2
Average cloud cover
63%
65%
63%
Average visibility
6mi 9.7km
5mi 8km
6mi 9.7km

Average temperature in January
Byron, WI

Average temperature in January - Byron, WI
  • Average high temperature in January: 22.5°F

The warmest month (with the highest average high temperature) is July (77.4°F).
The month with the lowest average high temperature is January (22.5°F).

  • Average low temperature in January: 10.8°F

The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).

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Average pressure in January
Byron, WI

Average pressure in January - Byron, WI
  • Average pressure in January: 30.09"Hg

The months with the highest atmospheric pressure are January, February and March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in January
Byron, WI

Average wind speed in January - Byron, WI
  • Average wind speed in January: 10.3mph

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (7.1mph).

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Average humidity in January
Byron, WI

Average humidity in January - Byron, WI
  • Average humidity in January: 89%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is April (76%).

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Average rainfall in January
Byron, WI

Average rainfall in January - Byron, WI
  • Average rainfall in January: 0.31"

The wettest months (with the highest rainfall) are June and October (0.94").
The driest months (with the least rainfall) are January and February (0.31").

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Average rainfall days in January
Byron, WI

Average rainfall days in January - Byron, WI
  • Average rainfall days in January: 3.3 days

The months with the highest number of rainy days are April and July (11 days).
The month with the least rainy days is February (2.3 days).

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Average snowfall in January
Byron, WI

Average snowfall in January - Byron, WI
  • Average snowfall in January: 1.06"

The month with the highest snowfall is January (1.06").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in January
Byron, WI

Average snowfall days in January - Byron, WI
  • Average snowfall days in January: 10.5 days

The month with the highest number of snowfall days is January (10.5 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, WI

Average daylight in January / Average sunshine in January - Byron, WI
  • Average daylight in January: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in January: 3h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).

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Average sunshine days in January
Byron, WI

Average sunshine days in January - Byron, WI
  • Average sunshine days in January: 20.8 days

The month with the most sunshine days is December (21.5 days).
The month with the least sunshine days is June (15.6 days).

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Average UV index in January
Byron, WI

Average UV index in January - Byron, WI
  • Average UV index in January: 1

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).

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Average cloud cover in January
Byron, WI

Average cloud cover in January - Byron, WI
  • Average cloud cover in January: 65

The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is July (Cloud cover 33).

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Average visibility in January
Byron, WI

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

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

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Byron, Wisconsin, USA

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