January weather forecast
Port Washington, WI

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Weather in January

January, the same as December, in Port Washington, Wisconsin, is a freezing cold winter month, with an average temperature fluctuating between 15.8°F (-9°C) and 25.5°F (-3.6°C).

Temperature

January is the month that records the lowest temperatures, with averages ranging from a high of 25.5°F (-3.6°C) to a low of 15.8°F (-9°C).

Humidity

With an average relative humidity of 86%, January is the most humid month in Port Washington.

Rainfall

In Port Washington, in January, it is raining for 4.4 days, with typically 1.18" (30mm) of accumulated precipitation. Throughout the year, there are 134.9 rainfall days, and 23.94" (608mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall. January is the month with the most snowfall in Port Washington, Wisconsin. Snow falls for 12.8 days and accumulates 3.43" (87mm) of snow.

Daylight

In Port Washington, the average length of the day in January is 9h and 24min.
On the first day of the month, sunrise is at 7:24 am and sunset at 4:25 pm. On the last day of January, sunrise is at 7:08 am and sunset at 5:01 pm CST.

Sunshine

The month with the least sunshine is January, with an average of 3.6h of sunshine.

UV index

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Port Washington. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the average person.
Note: In January, the maximum UV index of 1 translates into these guidelines:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
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Frequently asked questions

What is the coldest time of year in Port Washington?

January brings the lowest temperatures, with an average high of 25.5°F (-3.6°C) and an average low of 15.8°F (-9°C).

How cold is it in Port Washington in January?

In January, in Port Washington, the average high-temperature is 25.5°F (-3.6°C), and the average low-temperature is 15.8°F (-9°C).

What is the most humid month in Port Washington?

January is the most humid month, with an average relative humidity of 86%.

What is the average humidity in January in Port Washington?

In January, the average relative humidity in Port Washington is 86%.

How many days does it rain in January in Port Washington?

In Port Washington, in January, it is raining for 4.4 days, with typically 1.18" (30mm) of accumulated precipitation.

When does it snow the most in Port Washington?

January is the month with the most snowfall in Port Washington, Wisconsin. Snow falls for 12.8 days and accumulates 3.43" (87mm) of snow.

How many days does it snow in January in Port Washington?

In January, it is snowing for 12.8 days. Throughout January, 3.43" (87mm) of snow is accumulated.

What is the average length of the day in January in Port Washington?

In Port Washington, Wisconsin, the average day length in January is 9h and 24min.

When are sunrise and sunset in January in Port Washington?

On the first day of January in Port Washington, sunrise is at 7:24 am and sunset at 4:25 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:01 pm CST.

What is the month with the least sunshine in Port Washington?

The month with the least sunshine is January, with an average of 3.6h of sunshine.

How many hours of sunshine does Port Washington have in January?

The average sunshine duration in January is 3.6h.

What are the months with the lowest UV index in Port Washington?

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

What is the UV index intensity in January in Port Washington?

In Port Washington, the average daily maximum UV index in January is 1. A UV Index estimate of 2, and below, represents a low health threat 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
Port Washington, WI

Average temperature in January - Port Washington, WI
  • Average high temperature in January: 25.5°F

The warmest month (with the highest average high temperature) is July (76.1°F).
The month with the lowest average high temperature is January (25.5°F).

  • Average low temperature in January: 15.8°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).

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Average pressure in January
Port Washington, WI

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

The months with the highest atmospheric pressure are January, February and March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in January
Port Washington, WI

Average wind speed in January - Port Washington, WI
  • Average wind speed in January: 12.1mph

The windiest month (with the highest average wind speed) is January (12.1mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).

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Average humidity in January
Port Washington, WI

Average humidity in January - Port Washington, WI
  • Average humidity in January: 86%

The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April, October and November (77%).

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Average rainfall in January
Port Washington, WI

Average rainfall in January - Port Washington, WI
  • Average rainfall in January: 1.18"

The wettest month (with the highest rainfall) is July (2.99").
The driest month (with the least rainfall) is February (0.98").

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Average rainfall days in January
Port Washington, WI

Average rainfall days in January - Port Washington, WI
  • Average rainfall days in January: 4.4 days

The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is February (3.8 days).

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Average snowfall in January
Port Washington, WI

Average snowfall in January - Port Washington, WI
  • Average snowfall in January: 3.43"

The month with the highest snowfall is January (3.43").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in January
Port Washington, WI

Average snowfall days in January - Port Washington, WI
  • Average snowfall days in January: 12.8 days

The month with the highest number of snowfall days is January (12.8 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
Port Washington, WI

Average daylight in January / Average sunshine in January - Port Washington, 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: 3h and 4min

The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

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Average sunshine days in January
Port Washington, WI

Average sunshine days in January - Port Washington, WI
  • Average sunshine days in January: 13.3 days

The month with the most sunshine days is December (16.4 days).
The month with the least sunshine days is July (11.6 days).

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Average UV index in January
Port Washington, WI

Average UV index in January - Port Washington, 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
Port Washington, WI

Average cloud cover in January - Port Washington, WI
  • Average cloud cover in January: 63

The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 28).

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Average visibility in January
Port Washington, WI

Average visibility in January - Port Washington, WI
  • Average visibility in January: 6mi

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

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Port Washington, Wisconsin, USA

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