Climate and monthly weather forecast
Portage, WI

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Weather in January

January, like December, is another subzero cold winter month in Portage, Wisconsin, with an average temperature ranging between min 10.6°F (-11.9°C) and max 22.8°F (-5.1°C). The month of January, characterized by an average high of 22.8°F (-5.1°C) and a low of 10.6°F (-11.9°C), is recognized as the coldest. Weather in January »

Weather in February

February, the last month of the winter in Portage, is also a subzero cold month, with an average temperature ranging between max 26.2°F (-3.2°C) and min 13.1°F (-10.5°C). Welcoming February, Portage notes an average high-temperature of a still subzero cold 26.2°F (-3.2°C), nearly consistent with January's 22.8°F (-5.1°C). Weather in February »

Weather in March

The first month of the spring, March, is a cold month in Portage, Wisconsin, with temperature in the range of an average high of 41.2°F (5.1°C) and an average low of 26.1°F (-3.3°C). With the onset of March, Portage's weather experiences a distinct temperature rise, moving from a freezing cold 26.2°F (-3.2°C) in February to an icy 41.2°F (5.1°C). Weather in March »

Weather in April

April is a cool spring month in Portage, Wisconsin, with an average temperature ranging between max 53.2°F (11.8°C) and min 36.7°F (2.6°C). Portage's weather in April presents a rise in the average high-temperature, moving from an icy 41.2°F (5.1°C) in March to a fresh 53.2°F (11.8°C). Weather in April »

Weather in May

May, the last month of the spring in Portage, is a refreshing month, with an average temperature fluctuating between 65.8°F (18.8°C) and 47.8°F (8.8°C). As April transitions into May, a change in temperatures is observed, with average highs moving from a fresh 53.2°F (11.8°C) to a comfortable 65.8°F (18.8°C). Weather in May »

Weather in June

June, the first month of the summer in Portage, is a moderately hot month, with an average temperature ranging between min 56.8°F (13.8°C) and max 74.7°F (23.7°C). June introduces a minor temperature shift, with average high-temperatures adjusting from May's refreshing 65.8°F (18.8°C) to a warm 74.7°F (23.7°C). Weather in June »

Weather in July

July, like June, in Portage, Wisconsin, is another warm summer month, with an average temperature varying between 61°F (16.1°C) and 79°F (26.1°C). July brings the highest temperatures, with an average high of 79°F (26.1°C) and an average low of 61°F (16.1°C). Weather in July »

Weather in August

August, the last month of the summer in Portage, is also a moderately hot month, with an average temperature fluctuating between 77.7°F (25.4°C) and 59.2°F (15.1°C). August welcomes an average high-temperature of a still moderately hot 77.7°F (25.4°C), not much different from the preceding month. Weather in August »

Weather in September

September, the first month of the autumn in Portage, is also an agreeable month, with an average temperature varying between 51.3°F (10.7°C) and 71.1°F (21.7°C). Portage's September weather shows a modest shift in high-temperatures, falling from August's moderately hot 77.7°F (25.4°C) to an agreeable 71.1°F (21.7°C). Weather in September »

Weather in October

October, like September, is a moderate autumn month in Portage, Wisconsin, with temperature in the range of an average low of 41.4°F (5.2°C) and an average high of 56.8°F (13.8°C). A change in temperatures is noted as September gives way to October, with average highs reducing from a pleasant 71.1°F (21.7°C) to a refreshing 56.8°F (13.8°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a wintry month in Portage, Wisconsin, with an average temperature fluctuating between 42.1°F (5.6°C) and 29.8°F (-1.2°C). In November, the average high-temperature decreases considerably from a mild 56.8°F (13.8°C) in October to a wintry 42.1°F (5.6°C). Weather in November »

Weather in December

December, the first month of the winter in Portage, is also a subzero cold month, with an average temperature fluctuating between 19°F (-7.2°C) and 29.1°F (-1.6°C). December's arrival coincides with a drop in the average high-temperature, decreasing from November's wintry 42.1°F (5.6°C) to a subzero cold 29.1°F (-1.6°C). Weather in December »
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the coldest in Portage?

January is the month when Portage experiences its coldest temperatures, averaging a high of 22.8°F (-5.1°C) and a low of 10.6°F (-11.9°C).

What is the most humid month in Portage?

With an average relative humidity of 89%, January is the most humid month.

What is the driest month in Portage?

January is the month with the least rainfall. Rain falls for 3.5 days and accumulates 1.06" (27mm) of precipitation.

How much does it rain in Portage?

Throughout the year, in Portage, Wisconsin, there are 128.9 rainfall days, and 27.68" (703mm) of precipitation is accumulated.

When does it snow in Portage?

Months with snowfall in Portage are January through May, October through December.

How much does it snow in Portage?

Throughout the year, in Portage, there are 48.4 snowfall days, and 20.28" (515mm) of snow is accumulated.

What is the month with the least sunshine in Portage?

The month with the least sunshine in Portage, Wisconsin, is January, with an average of 3.1h of sunshine.

What are the months with the lowest UV index in Portage?

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

What is the snowiest month in Portage?

The month with the most snowfall is February, when snow falls for 10.2 days and typically aggregates up to 4.8" (122mm) of snow.

When is Daylight Saving Time (DST) in Portage?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Portage, 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 Portage?

The least humid month is April, with an average relative humidity of 76%.

What is the rainiest month in Portage?

The month with the most rainfall in Portage is June, when the rain falls for 16.8 days and typically aggregates up to 3.82" (97mm) of precipitation.

When it does not snow in Portage?

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

When are the longest days in Portage?

With an average of 15h and 24min of daylight, June has the longest days of the year in Portage, Wisconsin.

What is the hottest time of year in Portage?

The month of July sees the average highest temperatures in Portage, Wisconsin, reaching 79°F (26.1°C) at the peak and 61°F (16.1°C) at the low.

What month has the most sunshine in Portage?

With an average of 9.7h of sunshine, July has the most sunshine of the year.

When is the highest UV index in Portage?

The month with the highest UV index in Portage is July, with an average maximum UV index of 6.

What is the month with the shortest days in Portage?

With an average of 9h and 0min of daylight, December has the shortest days of the year.

Average temperature
Portage, WI

Average temperature - Portage, WI

The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (22.8°F).

The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (10.6°F).

Average pressure
Portage, WI

Average pressure - Portage, WI

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

Average wind speed
Portage, WI

Average wind speed - Portage, WI

The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

Average humidity
Portage, WI

Average humidity - Portage, WI

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is April (76%).

Average rainfall
Portage, WI

Average rainfall - Portage, WI

The wettest month (with the highest rainfall) is June (3.82").
The driest month (with the least rainfall) is January (1.06").

Average rainfall days
Portage, WI

Average rainfall days - Portage, WI

The month with the highest number of rainy days is June (16.8 days).
The month with the least rainy days is February (3.3 days).

Average snowfall
Portage, WI

Average snowfall - Portage, WI

The month with the highest snowfall is February (4.8").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days
Portage, WI

Average snowfall days - Portage, WI

The month with the highest number of snowfall days is January (12 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Portage, WI

Average daylight / Average sunshine - Portage, WI

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).

The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).

Average sunshine days
Portage, WI

Average sunshine days - Portage, WI

The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is June (10.9 days).

Average visibility
Portage, WI

Average visibility - Portage, WI

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).

Portage, Wisconsin, USA

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