January weather forecast and climate
Fort Atkinson, IA

Weather in January

January, like December, is another subzero cold winter month in Fort Atkinson, Iowa, with average temperature varying between 22.3°F (-5.4°C) and 9.7°F (-12.4°C).

Temperature

The coldest month is January, with an average high-temperature of 22.3°F (-5.4°C) and an average low-temperature of 9.7°F (-12.4°C).

Humidity

January and February, with an average relative humidity of 89%, are most humid months in Fort Atkinson.

Rainfall

January is the month with the least rainfall in Fort Atkinson. Rain falls for 4.5 days and accumulates 1.1" (28mm) of precipitation.

Snowfall

Months with snowfall in Fort Atkinson, Iowa, are January through May, October through December. In Fort Atkinson, during January, snow falls for 14.3 days and regularly aggregates up to 5.63" (143mm) of snow. In Fort Atkinson, Iowa, during the entire year, snow falls for 60.9 days, and aggregates up to 24.37" (619mm) of snow.

Daylight

In Fort Atkinson, the average length of the day in January is 9.4h.

Sunshine

January has the least sunshine of the year in Fort Atkinson, Iowa, with an average of 3.5h of sunshine.

UV index

Months with the lowest UV index in Fort Atkinson are January, February, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to the UV radiation for the average person.
Note: In January, the average maximum UV index of 1 translate into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the coldest month in Fort Atkinson?

January is the coldest month in Fort Atkinson, with an average high-temperature of 22.3°F (-5.4°C) and an average low-temperature of 9.7°F (-12.4°C).

What is the most humid month in Fort Atkinson?

January and February, with an average relative humidity of 89%, are most humid months in Fort Atkinson.

What is the average humidity in January in Fort Atkinson?

The average relative humidity in January in Fort Atkinson is 89%.

What is the driest month in Fort Atkinson?

The month with the least rainfall is January when the rain falls for 4.5 days and typically collects 1.1" (28mm) of precipitation.

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

In Fort Atkinson, Iowa, in January, it is raining for 4.5 days, with typically 1.1" (28mm) of accumulated precipitation.

How much does it snow in Fort Atkinson in January?

In Fort Atkinson, Iowa, in January, snow falls for 14.3 days, with typically accumulated 5.63" (143mm) of snow.

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

In Fort Atkinson, the average length of the day in January is 9.4h.

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

With an average of 3.5h of sunshine, January has the least sunshine of the year in Fort Atkinson.

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

In Fort Atkinson, the average sunshine in January is 3.5h.

When is the lowest UV index in Fort Atkinson?

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

How high is the UV index in January in Fort Atkinson?

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

Average temperature in January
Fort Atkinson, IA

Average temperature in January - Fort Atkinson, IA
  • Average high temperature in January: -5.4°C

The warmest month (with the highest average high temperature) is July (25.8°C).
The month with the lowest average high temperature is January (-5.4°C).

  • Average low temperature in January: -12.4°C

The month with the highest average low temperature is July (16.6°C).
The coldest month (with the lowest average low temperature) is January (-12.4°C).

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Average pressure in January
Fort Atkinson, IA

Average pressure in January - Fort Atkinson, IA
  • Average pressure in January: 1020.4mbar

The month with the highest atmospheric pressure is January (1020.4mbar).
The month with the lowest atmospheric pressure is June (1012.2mbar).

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Average wind speed in January
Fort Atkinson, IA

Average wind speed in January - Fort Atkinson, IA
  • Average wind speed in January: 16.4km/h

The windiest month (with the highest average wind speed) is April (16.7km/h).
The calmest month (with the lowest average wind speed) is August (11.3km/h).

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Average humidity in January
Fort Atkinson, IA

Average humidity in January - Fort Atkinson, IA
  • Average humidity in January: 89%

Months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is October (76%).

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Average rainfall in January
Fort Atkinson, IA

Average rainfall in January - Fort Atkinson, IA
  • Average rainfall in January: 28mm

The wettest month (with the highest rainfall) is June (128mm).
The driest month (with the least rainfall) is January (28mm).

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Average rainfall days in January
Fort Atkinson, IA

Average rainfall days in January - Fort Atkinson, IA
  • Average rainfall days in January: 4.5 days

Months with the highest number of rainy days are May and June (20.3 days).
The month with the least rainy days is February (4.4 days).

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Average snowfall in January
Fort Atkinson, IA

Average snowfall in January - Fort Atkinson, IA
  • Average snowfall in January: 143mm

The month with the highest snowfall is February (152mm).
Months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in January
Fort Atkinson, IA

Average snowfall days in January - Fort Atkinson, IA
  • Average snowfall days in January: 14.3 days

The month with the highest number of snowfall days is January (14.3 days).
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, IA

Average daylight in January / Average sunshine in January - Fort Atkinson, IA
  • Average daylight in January: 9.4h

The month with the longest days is June (Average daylight: 15.3h).
The month with the shortest days is December (Average daylight: 9h).

  • Average sunshine in January: 3.5h

The month with the most sunshine is August (Average sunshine: 9.8h).
The month with the least sunshine is January (Average sunshine: 3.5h).

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Average sunshine days in January
Fort Atkinson, IA

Average sunshine days in January - Fort Atkinson, IA
  • Average sunshine days in January: 14 days

The month with the most sunshine days is November (16.2 days).
The month with the least sunshine days is June (7.1 days).

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Average UV index in January
Fort Atkinson, IA

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

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

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Average cloud cover in January
Fort Atkinson, IA

Average cloud cover in January - Fort Atkinson, IA
  • Average cloud cover in January: 64

The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in January
Fort Atkinson, IA

Average visibility in January - Fort Atkinson, IA
  • Average visibility in January: 8km

Months with the highest visibility are March, April, May, June, August, September, October and November (9km).
Months with the lowest visibility are January, February, July and December (8km).

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