January weather forecast
Colby, WI

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Weather in January

January, like December, is a freezing cold winter month in Colby, Wisconsin, with temperature in the range of an average low of 6.4°F (-14.2°C) and an average high of 18.9°F (-7.3°C).

Temperature

Colby notes the coldest temperatures in January, with a high average of 18.9°F (-7.3°C) and a low of 6.4°F (-14.2°C).

Humidity

January and February, with an average relative humidity of 92%, are the most humid months.

Rainfall

January is the month with the least rainfall. Rain falls for 1.5 days and accumulates 0.35" (9mm) of precipitation.

Snowfall

Months with snowfall in Colby, Wisconsin, are January through May, October through December. In January, it is snowing for 13.3 days. Throughout January, 1.73" (44mm) of snow is accumulated. Throughout the year, in Colby, there are 58.8 snowfall days, and 10.83" (275mm) of snow is accumulated.

Daylight

The average length of the day in January is 9h and 15min.
On the first day of the month, sunrise is at 7:39 am and sunset at 4:30 pm. On the last day of January, in Colby, sunrise is at 7:22 am and sunset at 5:07 pm CST.

Sunshine

The month with the least sunshine in Colby is January, with an average of 2.7h of sunshine.

UV index

January, February, November and December, with an average maximum UV index of 1, 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 radiation for ordinary individuals.
Note: The daily maximum UV index of 1 in January interprets into the following advice:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month in Colby?

During the coldest month in Colby, January, temperatures average a high of 18.9°F (-7.3°C) and a low of 6.4°F (-14.2°C).

How cold is it in Colby in January?

In January, in Colby, the average high-temperature is 18.9°F (-7.3°C), and the average low-temperature is 6.4°F (-14.2°C).

What are the most humid months in Colby?

January and February, with an average relative humidity of 92%, are most humid months in Colby.

What is the average humidity in January in Colby?

In January, the average relative humidity in Colby, Wisconsin, is 92%.

What is the driest month in Colby?

January is the month with the least rainfall in Colby, Wisconsin. Rain falls for 1.5 days and accumulates 0.35" (9mm) of precipitation.

How many days does it rain in January in Colby?

In Colby, Wisconsin, in January, it is raining for 1.5 days, with typically 0.35" (9mm) of accumulated precipitation.

How many days does it snow in January in Colby?

In Colby, in January, snow falls for 13.3 days, with typically accumulated 1.73" (44mm) of snow.

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

In Colby, the average day length in January is 9h and 15min.

When is the sunrise / sunset in January in Colby?

On the first day of January in Colby, sunrise is at 7:39 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 5:07 pm CST.

What is the month with the least sunshine in Colby?

January has the least sunshine of the year in Colby, with an average of 2.7h of sunshine.

How many hours of sunshine does Colby have in January?

In January, the average sunshine duration is 2.7h.

When is the lowest UV index in Colby?

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

What is the UV index intensity in January in Colby?

In January, the average daily maximum UV index is 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's 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
Colby, WI

Average temperature in January - Colby, WI
  • Average high temperature in January: 18.9°F

The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is January (18.9°F).

  • Average low temperature in January: 6.4°F

The month with the highest average low temperature is July (58.5°F).
The coldest month (with the lowest average low temperature) is January (6.4°F).

Average pressure in January
Colby, WI

Average pressure in January - Colby, WI
  • Average pressure in January: 30.11"Hg

The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in January
Colby, WI

Average wind speed in January - Colby, WI
  • Average wind speed in January: 9.3mph

The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest month (with the lowest average wind speed) is August (7mph).

Average humidity in January
Colby, WI

Average humidity in January - Colby, WI
  • Average humidity in January: 92%

The months with the highest relative humidity are January and February (92%).
The months with the lowest relative humidity are April and May (78%).

Average rainfall in January
Colby, WI

Average rainfall in January - Colby, WI
  • Average rainfall in January: 0.35"

The wettest month (with the highest rainfall) is June (1.61").
The driest month (with the least rainfall) is January (0.35").

Average rainfall days in January
Colby, WI

Average rainfall days in January - Colby, WI
  • Average rainfall days in January: 1.5 days

The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is January (1.5 days).

Average snowfall in January
Colby, WI

Average snowfall in January - Colby, WI
  • Average snowfall in January: 1.73"

The month with the highest snowfall is February (2.52").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Colby, WI

Average snowfall days in January - Colby, WI
  • Average snowfall days in January: 13.3 days

The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
Colby, WI

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

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in January: 2h and 4min

The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).

Average sunshine days in January
Colby, WI

Average sunshine days in January - Colby, WI
  • Average sunshine days in January: 20.1 days

The month with the most sunshine days is January (20.1 days).
The month with the least sunshine days is June (12.4 days).

Average UV index in January
Colby, WI

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

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

Average cloud cover in January
Colby, WI

Average cloud cover in January - Colby, WI
  • Average cloud cover in January: 74

The month with the most cloud cover is January (Cloud cover 74).
The months with the least cloud cover are July and August (Cloud cover 37).

Average visibility in January
Colby, WI

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

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

Colby, Wisconsin, USA

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