January weather forecast
Wauwatosa, WI

Weather in January

January, the same as December, in Wauwatosa, Wisconsin, is another subzero cold winter month, with an average temperature fluctuating between 15.8°F (-9°C) and 26.1°F (-3.3°C).

Temperature

January is the coldest month, with an average high-temperature of 26.1°F (-3.3°C) and an average low-temperature of 15.8°F (-9°C).

Humidity

January is the most humid month in Wauwatosa, Wisconsin, with an average relative humidity of 85%.

Rainfall

In January, in Wauwatosa, the rain falls for 1.8 days. Throughout January, 0.31" (8mm) of precipitation is accumulated. In Wauwatosa, during the entire year, the rain falls for 75.6 days and collects up to 5.83" (148mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. The month with the most snowfall in Wauwatosa, Wisconsin, is January, when snow falls for 6.6 days and typically aggregates up to 1.1" (28mm) of snow.

Daylight

In Wauwatosa, the average length of the day in January is 9h and 26min.
On the first day of the month, sunrise is at 7:23 am and sunset at 4:27 pm. On the last day of January, in Wauwatosa, Wisconsin, sunrise is at 7:07 am and sunset at 5:03 pm CST.

Sunshine

January has the least sunshine of the year in Wauwatosa, with an average of 3.5h of sunshine.

UV index

The months with the lowest UV index in Wauwatosa are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The daily maximum UV index of 1 in January interpret into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. 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 Wauwatosa?

January is the coldest month, with an average high-temperature of 26.1°F (-3.3°C) and an average low-temperature of 15.8°F (-9°C).

What is the most humid month in Wauwatosa?

January is the most humid month in Wauwatosa, with an average relative humidity of 85%.

What is the average humidity in January in Wauwatosa?

In January, the average relative humidity is 85%.

How many days does it rain in January in Wauwatosa?

In Wauwatosa, in January, it is raining for 1.8 days, with typically 0.31" (8mm) of accumulated precipitation.

What is the snowiest month in Wauwatosa?

January is the month with the most snowfall in Wauwatosa. Snow falls for 6.6 days and accumulates 1.1" (28mm) of snow.

How much does it snow in Wauwatosa in January?

In Wauwatosa, Wisconsin, during January, snow falls for 6.6 days and regularly aggregates up to 1.1" (28mm) of snow.

What is the average length of the day in January in Wauwatosa?

In Wauwatosa, Wisconsin, the average day length in January is 9h and 26min.

When is the sunrise / sunset in January in Wauwatosa?

On the first day of January, sunrise is at 7:23 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 5:03 pm CST.

What is the month with the least sunshine in Wauwatosa?

January has the least sunshine of the year in Wauwatosa, with an average of 3.5h of sunshine.

How many hours of sunshine does Wauwatosa have in January?

The average sunshine duration in January is 3.5h.

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

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

What is the UV index intensity in January in Wauwatosa?

In January, the average daily maximum UV index in Wauwatosa is 1. A UV Index estimate of 2, and below, represents 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
Wauwatosa, WI

Average temperature in January - Wauwatosa, WI
  • Average high temperature in January: 26.1°F

The warmest month (with the highest average high temperature) is July (77.7°F).
The month with the lowest average high temperature is January (26.1°F).

  • Average low temperature in January: 15.8°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).

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Average pressure in January
Wauwatosa, WI

Average pressure in January - Wauwatosa, 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 (29.92"Hg).

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Average wind speed in January
Wauwatosa, WI

Average wind speed in January - Wauwatosa, WI
  • Average wind speed in January: 11.4mph

The windiest month (with the highest average wind speed) is January (11.4mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).

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Average humidity in January
Wauwatosa, WI

Average humidity in January - Wauwatosa, WI
  • Average humidity in January: 85%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (75%).

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Average rainfall in January
Wauwatosa, WI

Average rainfall in January - Wauwatosa, WI
  • Average rainfall in January: 0.31"

The wettest month (with the highest rainfall) is July (0.75").
The driest months (with the least rainfall) are February and December (0.28").

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Average rainfall days in January
Wauwatosa, WI

Average rainfall days in January - Wauwatosa, WI
  • Average rainfall days in January: 1.8 days

The month with the highest number of rainy days is June (9.9 days).
The months with the least rainy days are January and February (1.8 days).

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Average snowfall in January
Wauwatosa, WI

Average snowfall in January - Wauwatosa, WI
  • Average snowfall in January: 1.1"

The month with the highest snowfall is January (1.1").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in January
Wauwatosa, WI

Average snowfall days in January - Wauwatosa, WI
  • Average snowfall days in January: 6.6 days

The month with the highest number of snowfall days is January (6.6 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
Wauwatosa, WI

Average daylight in January / Average sunshine in January - Wauwatosa, WI
  • Average daylight in January: 9h and 26min

The month with the longest days is June (Average daylight: 15h and 19min).
The month with the shortest days is December (Average daylight: 9h and 4min).

  • Average sunshine in January: 3h and 30min

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 30min).

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Average sunshine days in January
Wauwatosa, WI

Average sunshine days in January - Wauwatosa, WI
  • Average sunshine days in January: 25.4 days

The month with the most sunshine days is January (25.4 days).
The month with the least sunshine days is June (17.3 days).

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Average UV index in January
Wauwatosa, WI

Average UV index in January - Wauwatosa, WI
  • Average UV index in January: 1

The months with the highest UV index are June and July (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
Wauwatosa, WI

Average cloud cover in January - Wauwatosa, 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
Wauwatosa, WI

Average visibility in January - Wauwatosa, 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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