January weather forecast
Mason, WI

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Weather in January

January, like December, is a freezing cold winter month in Mason, Wisconsin, with an average temperature varying between 19.4°F (-7°C) and 8.6°F (-13°C).

Temperature

Mason experiences its lowest temperatures in January, with an average peak of 19.4°F (-7°C) and a low of 8.6°F (-13°C).

Humidity

The most humid month is January, with an average relative humidity of 91%.

Rainfall

The month with the least rainfall is January, when the rain falls for 3.2 days and typically collects 0.94" (24mm) of precipitation.

Snowfall

Months with snowfall in Mason, Wisconsin, are January through May, October through December. In Mason, in January, snow falls for 21.8 days, with typically accumulated 6.5" (165mm) of snow. Throughout the year, in Mason, there are 99.1 snowfall days, and 37.13" (943mm) of snow is accumulated.

Daylight

In Mason, the average length of the day in January is 9h and 5min.
On the first day of the month, sunrise is at 7:47 am and sunset at 4:27 pm. On the last day of January, sunrise is at 7:28 am and sunset at 5:06 pm CST.

Sunshine

The month with the least sunshine in Mason is January, with an average of 2.3h of sunshine.

UV index

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for average individuals.
Note: The average daily UV index of 1 in January transforms into the following instructions:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
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Frequently asked questions

What month is the coldest in Mason?

Mason notes the coldest temperatures in January, with a average high of 19.4°F (-7°C) and a low of 8.6°F (-13°C).

How cold is January in Mason?

In January, the average high-temperature and low-temperature are 19.4°F (-7°C) and 8.6°F (-13°C) respectively.

What is the most humid month in Mason?

January is the most humid month, with an average relative humidity of 91%.

What is the average humidity in January in Mason?

In Mason, the average relative humidity in January is 91%.

What is the driest month in Mason?

The month with the least rainfall in Mason is January, when the rain falls for 3.2 days and typically collects 0.94" (24mm) of precipitation.

How many days does it rain in January in Mason?

In January, in Mason, Wisconsin, the rain falls for 3.2 days. Throughout January, 0.94" (24mm) of precipitation is accumulated.

How many days does it snow in January in Mason?

In January, it is snowing for 21.8 days. Throughout January, 6.5" (165mm) of snow is accumulated.

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

In January, the average day length in Mason, Wisconsin, is 9h and 5min.

What time are sunrise and sunset in January in Mason?

On the first day of January, sunrise is at 7:47 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 5:06 pm CST.

What is the month with the least sunshine in Mason?

With an average of 2.3h of sunshine, January has the least sunshine of the year in Mason, Wisconsin.

How many hours of sunshine does Mason have in January?

The average sunshine duration in January in Mason, Wisconsin, is 2.3h.

When is the lowest UV index in Mason?

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

How high is the UV index in January in Mason?

The average daily maximum UV index in January is 1. A UV Index of 2, and less, symbolizes a low health threat 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
Mason, WI

Average temperature in January - Mason, WI
  • Average high temperature in January: 19.4°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 (19.4°F).

  • Average low temperature in January: 8.6°F

The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (8.6°F).

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Average pressure in January
Mason, WI

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

The month with the highest atmospheric pressure is February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in January
Mason, WI

Average wind speed in January - Mason, WI
  • Average wind speed in January: 9mph

The windiest month (with the highest average wind speed) is November (9.1mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).

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Average humidity in January
Mason, WI

Average humidity in January - Mason, WI
  • Average humidity in January: 91%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is May (72%).

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Average rainfall in January
Mason, WI

Average rainfall in January - Mason, WI
  • Average rainfall in January: 0.94"

The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is January (0.94").

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Average rainfall days in January
Mason, WI

Average rainfall days in January - Mason, WI
  • Average rainfall days in January: 3.2 days

The month with the highest number of rainy days is June (15.5 days).
The month with the least rainy days is January (3.2 days).

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Average snowfall in January
Mason, WI

Average snowfall in January - Mason, WI
  • Average snowfall in January: 6.5"

The month with the highest snowfall is December (7.95").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Mason, WI

Average snowfall days in January - Mason, WI
  • Average snowfall days in January: 21.8 days

The month with the highest number of snowfall days is January (21.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in January / Average sunshine in January - Mason, WI
  • Average daylight in January: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in January: 2h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).

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Average sunshine days in January
Mason, WI

Average sunshine days in January - Mason, WI
  • Average sunshine days in January: 10.4 days

The month with the most sunshine days is September (15 days).
The month with the least sunshine days is December (9.8 days).

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Average UV index in January
Mason, WI

Average UV index in January - Mason, WI
  • 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, November and December (UV index 1).

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Average cloud cover in January
Mason, WI

Average cloud cover in January - Mason, WI
  • Average cloud cover in January: 78

The month with the most cloud cover is January (Cloud cover 78).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in January
Mason, WI

Average visibility in January - Mason, WI
  • Average visibility in January: 4mi

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).

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Mason, Wisconsin, USA

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