Climate and monthly weather forecast
Port Arthur, WI

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Weather in January

January, like December, is a freezing cold winter month in Port Arthur, Wisconsin, with an average temperature varying between 5.4°F (-14.8°C) and 18.1°F (-7.7°C). Port Arthur experiences its lowest temperatures in January, with an average peak of 18.1°F (-7.7°C) and a low of 5.4°F (-14.8°C). Weather in January »

Weather in February

The last month of the winter, February, is another freezing cold month in Port Arthur, Wisconsin, with an average temperature ranging between max 22.5°F (-5.3°C) and min 8.4°F (-13.1°C). The shift from January to February is characterized by an average high-temperature of a still freezing cold 22.5°F (-5.3°C), not significantly different from the 18.1°F (-7.7°C) of January. Weather in February »

Weather in March

March, the first month of the spring in Port Arthur, is an icy month, with temperature in the range of an average low of 21.7°F (-5.7°C) and an average high of 36.9°F (2.7°C). As Port Arthur steps into March, a marked temperature rise is observed, with the average high-temperature advancing from February's subzero cold 22.5°F (-5.3°C) to a wintry 36.9°F (2.7°C). Weather in March »

Weather in April

April is a chilly spring month in Port Arthur, Wisconsin, with an average temperature ranging between min 32.5°F (0.3°C) and max 49.6°F (9.8°C). The start of April brings a rise in the average high-temperature, moving from an icy 36.9°F (2.7°C) in March to a chilly 49.6°F (9.8°C). Weather in April »

Weather in May

The last month of the spring, May, is a comfortable month in Port Arthur, Wisconsin, with an average temperature varying between 64.4°F (18°C) and 44.2°F (6.8°C). The shift from April to May sees a distinct increase in the average high-temperature, escalating from a chilly 49.6°F (9.8°C) to a comfortable 64.4°F (18°C). Weather in May »

Weather in June

June, the first month of the summer in Port Arthur, is a warm month, with an average temperature ranging between max 74.3°F (23.5°C) and min 53.4°F (11.9°C). The onset of June brings a temperature shift, with the average high-temperature moving from a refreshing 64.4°F (18°C) in May to a moderately hot 74.3°F (23.5°C). Weather in June »

Weather in July

July, like June, in Port Arthur, Wisconsin, is a moderately hot summer month, with an average temperature fluctuating between 78.8°F (26°C) and 58.5°F (14.7°C). July temperatures tend to peak at an average high of 78.8°F (26°C) and dip to a low of 58.5°F (14.7°C). Weather in July »

Weather in August

August, the last month of the summer in Port Arthur, is also a moderately hot month, with an average temperature varying between 56.3°F (13.5°C) and 76.8°F (24.9°C). Port Arthur, Wisconsin, starts August with an average high-temperature of a still warm 76.8°F (24.9°C), hinting at a minimal fluctuation from July. Weather in August »

Weather in September

September, the first month of the autumn in Port Arthur, is also an agreeable month, with temperature in the range of an average low of 49.1°F (9.5°C) and an average high of 68.9°F (20.5°C). In Port Arthur, the average high-temperature in September slightly decreases from a moderately hot 76.8°F (24.9°C) in August to a pleasant 68.9°F (20.5°C). Weather in September »

Weather in October

October, the same as September, is another fresh autumn month in Port Arthur, Wisconsin, with an average temperature varying between 52.7°F (11.5°C) and 38.3°F (3.5°C). As September transitions into October, a clear downswing in temperatures is observed, with average highs retreating from a pleasant 68.9°F (20.5°C) to a fresh 52.7°F (11.5°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a wintry month in Port Arthur, Wisconsin, with an average temperature fluctuating between 37.6°F (3.1°C) and 25.9°F (-3.4°C). November indicates a noticeable reduction in the average high-temperature, moving down from a cool 52.7°F (11.5°C) in October to a cold 37.6°F (3.1°C). Weather in November »

Weather in December

December, the first month of the winter in Port Arthur, is also a subzero cold month, with temperature in the range of an average high of 23.9°F (-4.5°C) and an average low of 13.1°F (-10.5°C). The start of December comes with a reduction in the average high-temperature, receding from a cold 37.6°F (3.1°C) in November to a freezing cold 23.9°F (-4.5°C). Weather in December »
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Frequently asked questions

What is the coldest time of year in Port Arthur?

January, marked by an average high-temperature of 18.1°F (-7.7°C) and a low-temperature of 5.4°F (-14.8°C), is the coldest month.

What is the most humid month in Port Arthur?

January and February, with an average relative humidity of 92%, are most humid months.

What is the driest month in Port Arthur?

The month with the least rainfall is January, when the rain falls for 3.3 days and typically collects 0.98" (25mm) of precipitation.

How much does it rain in Port Arthur?

Throughout the year, in Port Arthur, Wisconsin, there are 128.5 rainfall days, and 23.94" (608mm) of precipitation is accumulated.

When does it snow in Port Arthur?

January through May, October through December are months with snowfall in Port Arthur.

How many days does it snow in Port Arthur?

In Port Arthur, Wisconsin, during the entire year, snow falls for 88.7 days and aggregates up to 35.87" (911mm) of snow.

What are the months with the least sunshine in Port Arthur?

January and February, with an average of 2.6h of sunshine, are months with the least sunshine.

What is the month with the lowest UV index in Port Arthur?

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

When is Daylight Saving Time (DST) in Port Arthur?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.

What is the least humid month in Port Arthur?

May is the least humid month in Port Arthur, Wisconsin, with an average relative humidity of 75%.

What is the month with the highest UV index in Port Arthur?

The months with the highest UV index in Port Arthur, Wisconsin, are May through August, with an average maximum UV index of 5.

What is the rainiest month in Port Arthur?

June is the month with the most rainfall. Rain falls for 16.5 days and accumulates 3.43" (87mm) of precipitation.

When it does not snow in Port Arthur?

In Port Arthur, Wisconsin, snow does not fall in June through September.

When are the longest days in Port Arthur?

June has the longest days of the year in Port Arthur, Wisconsin, with an average of 15h and 36min of daylight.

What is the warmest month in Port Arthur?

The warmest time of the year in Port Arthur is July, with temperatures averaging a high of 78.8°F (26°C) and a low of 58.5°F (14.7°C).

What month has the most sunshine in Port Arthur?

The month with the most sunshine in Port Arthur is July, with an average of 9.6h of sunshine.

When does it snow the most in Port Arthur?

The month with the most snowfall in Port Arthur is December, when snow falls for 16.8 days and typically aggregates up to 7.28" (185mm) of snow.

What is the month with the shortest days in Port Arthur?

December has the shortest days of the year, with an average of 8h and 48min of daylight.

Average temperature
Port Arthur, WI

Average temperature - Port Arthur, WI

The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (18.1°F).

The month with the highest average low temperature is July (58.5°F).
The coldest month (with the lowest average low temperature) is January (5.4°F).

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Average pressure
Port Arthur, WI

Average pressure - Port Arthur, WI

The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed
Port Arthur, WI

Average wind speed - Port Arthur, WI

The windiest month (with the highest average wind speed) is April (8.8mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

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Average humidity
Port Arthur, WI

Average humidity - Port Arthur, WI

The months with the highest relative humidity are January and February (92%).
The month with the lowest relative humidity is May (75%).

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Average rainfall
Port Arthur, WI

Average rainfall - Port Arthur, WI

The wettest month (with the highest rainfall) is June (3.43").
The driest month (with the least rainfall) is January (0.98").

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Average rainfall days
Port Arthur, WI

Average rainfall days - Port Arthur, WI

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (2.9 days).

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Average snowfall
Port Arthur, WI

Average snowfall - Port Arthur, WI

The month with the highest snowfall is December (7.28").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Port Arthur, WI

Average snowfall days - Port Arthur, WI

The month with the highest number of snowfall days is January (19.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Port Arthur, WI

Average daylight / Average sunshine - Port Arthur, WI

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

The month with the most sunshine is July (Average sunshine: 9h and 36min).
The months with the least sunshine are January and February (Average sunshine: 2h and 36min).

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Average sunshine days
Port Arthur, WI

Average sunshine days - Port Arthur, WI

The month with the most sunshine days is October (16 days).
The months with the least sunshine days are February and April (10 days).

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Average UV index
Port Arthur, WI

Average UV index - Port Arthur, WI

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

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Average visibility
Port Arthur, WI

Average visibility - Port Arthur, WI

The months with the highest visibility are May and June (6mi).
The months with the lowest visibility are January, February and December (4mi).

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Port Arthur, Wisconsin, USA

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