January weather forecast
Fort Atkinson, WI

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Weather in January

Starting the year, Fort Atkinson finds itself in the grip of winter with the chilly air encapsulating the city. The cold temperatures make rain sparse, turning water droplets into snowflakes that blanket the city. Residents encounter cold fronts with the highest temperature reaching 24.3°F (-4.3°C) and the lowest at 12°F (-11.1°C). The month is characterized by frequent snowfall that leaves a white blanket on the city. The weather remains consistent throughout January, closely mirroring the conditions of the last month of the previous year.

Temperature

Temperature readings reach their annual highs in January, averaging 24.3°F (-4.3°C) and a minimum average of 12°F (-11.1°C).

Humidity

January is the most humid month, with an average relative humidity of 88%.

Rainfall

January and February are months with the least rain when the rain falls for 5.2 days and typically aggregates up to 1.42" (36mm) of rain.

Snowfall

January through May, October through December are months with snowfall in Fort Atkinson. In January, it is snowing for 15.4 days. Throughout January, 5.24" (133mm) of snow is accumulated. Throughout the year, in Fort Atkinson, there are 58 snowfall days, and 21.85" (555mm) of snow is accumulated.

Daylight

The average length of the day in January is 9h and 27min.
On the first day of the month, sunrise is at 7:26 am and sunset at 4:31 pm. On the last day of January, in Fort Atkinson, sunrise is at 7:11 am and sunset at 5:06 pm CST.

Sunshine

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

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index in Fort Atkinson. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the average person.
Note: In January, a regular UV index of 1 translates into these guidelines:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Always opt for UVA and UVB-resistant sunglasses on radiant days. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
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Frequently asked questions

What part of the year is the coldest in Fort Atkinson?

January is Fort Atkinson's coldest month, registering average high temperatures of 24.3°F (-4.3°C) and lows of 12°F (-11.1°C).

How cold is it in Fort Atkinson in January?

Fort Atkinson in January has an average high-temperature of 24.3°F (-4.3°C) and an average low-temperature of 12°F (-11.1°C).

What is the most humid month in Fort Atkinson?

With an average relative humidity of 88%, January is the most humid month.

What is the average humidity in January in Fort Atkinson?

In January, the average relative humidity in Fort Atkinson is 88%.

What is the driest month in Fort Atkinson?

The months with the least rainfall in Fort Atkinson are January and February Rain falls for 5.2 days and accumulates 1.42" (36mm) of rain.

How many days does it rain in January in Fort Atkinson?

In January, the rain falls for 5.2 days. Throughout January, 1.42" (36mm) of precipitation is accumulated.

How much does it snow in Fort Atkinson in January?

In January, it is snowing for 15.4 days. Throughout January, 5.24" (133mm) of snow is accumulated.

How many hours of daylight does Fort Atkinson have in January?

In Fort Atkinson, Wisconsin, the average day length in January is 9h and 27min.

What time are sunrise and sunset in January in Fort Atkinson?

In January, on the first day of the month, sunrise is at 7:26 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 5:06 pm CST.

What is the month with the least sunshine in Fort Atkinson?

The month with the least sunshine in Fort Atkinson is January, with an average of 3.4h of sunshine.

How long on average sun shines in January in Fort Atkinson?

In Fort Atkinson, Wisconsin, the average sunshine duration in January is 3.4h.

What are the months with the lowest UV index in Fort Atkinson?

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

What is the UV index reading in January in Fort Atkinson?

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

Average temperature in January - Fort Atkinson, WI
  • Average high temperature in January: 24.3°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (24.3°F).

  • Average low temperature in January: 12°F

The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (12°F).

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Average pressure in January
Fort Atkinson, WI

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

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in January
Fort Atkinson, WI

Average wind speed in January - Fort Atkinson, WI
  • Average wind speed in January: 9.6mph

The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).

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Average humidity in January
Fort Atkinson, WI

Average humidity in January - Fort Atkinson, WI
  • Average humidity in January: 88%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is April (76%).

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Average rainfall in January
Fort Atkinson, WI

Average rainfall in January - Fort Atkinson, WI
  • Average rainfall in January: 1.42"

The wettest month (with the highest rainfall) is June (3.78").
The driest months (with the least rainfall) are January and February (1.42").

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Average rainfall days in January
Fort Atkinson, WI

Average rainfall days in January - Fort Atkinson, WI
  • Average rainfall days in January: 5.2 days

The month with the highest number of rainy days is May (19.6 days).
The month with the least rainy days is February (5 days).

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Average snowfall in January
Fort Atkinson, WI

Average snowfall in January - Fort Atkinson, WI
  • Average snowfall in January: 5.24"

The month with the highest snowfall is February (5.39").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Fort Atkinson, WI

Average snowfall days in January - Fort Atkinson, WI
  • Average snowfall days in January: 15.4 days

The month with the highest number of snowfall days is January (15.4 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
Fort Atkinson, WI

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

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in January: 3h and 2min

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 24min).

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Average sunshine days in January
Fort Atkinson, WI

Average sunshine days in January - Fort Atkinson, WI
  • Average sunshine days in January: 12.5 days

The month with the most sunshine days is November (16.1 days).
The months with the least sunshine days are May and June (9.8 days).

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Average UV index in January
Fort Atkinson, WI

Average UV index in January - Fort Atkinson, WI
  • Average UV index in January: 1

The month with the highest UV index is June (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
Fort Atkinson, WI

Average cloud cover in January - Fort Atkinson, 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 August (Cloud cover 34).

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Average visibility in January
Fort Atkinson, WI

Average visibility in January - Fort Atkinson, WI
  • Average visibility in January: 5mi

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

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Fort Atkinson, Wisconsin, USA

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