January weather forecast
Wilton, WI

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Weather in January

January, the same as December, in Wilton, Wisconsin, is a freezing cold winter month, with an average temperature fluctuating between 21.4°F (-5.9°C) and 8.2°F (-13.2°C).

Temperature

With average high temperatures of 21.4°F (-5.9°C) and lows of 8.2°F (-13.2°C), January is the coldest month.

Humidity

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

Rainfall

January and February are months with the least rain in Wilton, Wisconsin, when the rain falls for 3.5 days and typically aggregates up to 0.67" (17mm) of rain.

Snowfall

January through May, October through December are months with snowfall in Wilton. In Wilton, in January, during 14.6 snowfall days, 3.07" (78mm) of snow is typically accumulated. In Wilton, during the entire year, snow falls for 58.3 days and aggregates up to 16.02" (407mm) of snow.

Daylight

The average length of the day in January is 9h and 22min.
On the first day of the month, sunrise is at 7:36 am and sunset at 4:35 pm. On the last day of January, in Wilton, sunrise is at 7:20 am and sunset at 5:10 pm CST.

Sunshine

The month with the least sunshine is January, with an average of 2.8h of sunshine.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for average individuals.
Note: In January, a daily maximum UV index of 1 leads to the following instructions:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
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Frequently asked questions

What part of the year is the coldest in Wilton?

Wilton's coldest weather arrives in January, when temperatures average a high of 21.4°F (-5.9°C) and a low of 8.2°F (-13.2°C).

How cold is it in Wilton in January?

The high-temperature during January is 21.4°F (-5.9°C) and the low-temperature is 8.2°F (-13.2°C).

What is the most humid month in Wilton?

With an average relative humidity of 91%, January is the most humid month in Wilton, Wisconsin.

What is the average humidity in January in Wilton?

In January, the average relative humidity is 91%.

What is the driest month in Wilton?

January and February are months with the least rain in Wilton when the rain falls for 3.5 days and typically aggregates up to 0.67" (17mm) of rain.

How many days does it rain in January in Wilton?

In Wilton, in January, during 3.5 rainfall days, 0.67" (17mm) of precipitation is typically accumulated.

How many days does it snow in January in Wilton?

In January, in Wilton, it is snowing for 14.6 days. Throughout January, 3.07" (78mm) of snow is accumulated.

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

In Wilton, the average day length in January is 9h and 22min.

What time are sunrise and sunset in January in Wilton?

On the first day of January in Wilton, sunrise is at 7:36 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 5:10 pm CST.

What is the month with the least sunshine in Wilton?

The month with the least sunshine in Wilton, Wisconsin, is January, with an average of 2.8h of sunshine.

How long on average sun shines in January in Wilton?

The average sunshine duration in January in Wilton is 2.8h.

What is the month with the lowest UV index in Wilton?

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

What is the UV index intensity in January in Wilton?

In January, the average daily maximum UV index is 1. A UV Index of 2, and less, symbolizes a minimal hazard to health 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
Wilton, WI

Average temperature in January - Wilton, WI
  • Average high temperature in January: 21.4°F

The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (21.4°F).

  • Average low temperature in January: 8.2°F

The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (8.2°F).

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Average pressure in January
Wilton, WI

Average pressure in January - Wilton, WI
  • Average pressure in January: 30.12"Hg

The months with the highest atmospheric pressure are January and February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in January
Wilton, WI

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

The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).

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Average humidity in January
Wilton, WI

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

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is April (77%).

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Average rainfall in January
Wilton, WI

Average rainfall in January - Wilton, WI
  • Average rainfall in January: 0.67"

The wettest month (with the highest rainfall) is June (2.91").
The driest months (with the least rainfall) are January and February (0.67").

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Average rainfall days in January
Wilton, WI

Average rainfall days in January - Wilton, WI
  • Average rainfall days in January: 3.5 days

The month with the highest number of rainy days is June (15.3 days).
The month with the least rainy days is February (2.1 days).

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Average snowfall in January
Wilton, WI

Average snowfall in January - Wilton, WI
  • Average snowfall in January: 3.07"

The month with the highest snowfall is February (3.98").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Wilton, WI

Average snowfall days in January - Wilton, WI
  • Average snowfall days in January: 14.6 days

The month with the highest number of snowfall days is January (14.6 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
Wilton, WI

Average daylight in January / Average sunshine in January - Wilton, 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: 2h and 5min

The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).

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Average sunshine days in January
Wilton, WI

Average sunshine days in January - Wilton, WI
  • Average sunshine days in January: 16.7 days

The month with the most sunshine days is October (18.1 days).
The month with the least sunshine days is June (11.6 days).

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Average UV index in January
Wilton, WI

Average UV index in January - Wilton, 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, February, November and December (UV index 1).

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Average cloud cover in January
Wilton, WI

Average cloud cover in January - Wilton, WI
  • Average cloud cover in January: 70

The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 35).

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Average visibility in January
Wilton, WI

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

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

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Wilton, Wisconsin, USA

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