January weather forecast
Brookfield, WI

Weather in January

January, like December, is another subzero cold winter month in Brookfield, Wisconsin, with temperature in the range of an average high of 25.3°F (-3.7°C) and an average low of 15.3°F (-9.3°C).

Temperature

January is the coldest month, with an average high-temperature of 25.3°F (-3.7°C) and an average low-temperature of 15.3°F (-9.3°C).

Humidity

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

Rainfall

In Brookfield, during January, the rain falls for 4.8 days and regularly aggregates up to 0.91" (23mm) of precipitation. In Brookfield, during the entire year, the rain falls for 129.9 days and collects up to 19.69" (500mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. The month with the most snowfall is January, when snow falls for 12.3 days and typically aggregates up to 3.39" (86mm) of snow.

Daylight

In Brookfield, the average length of the day in January is 9h and 26min.
On the first day of January in Brookfield, sunrise is at 7:23 am and sunset at 4:28 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:03 pm CST.

Sunshine

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

UV index

The months with the lowest UV index in Brookfield are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the ordinary person.
Note: In January, the average maximum UV index of 1 translate into the following recommendations:
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 Brookfield?

January is the coldest month in Brookfield, Wisconsin, with an average high-temperature of 25.3°F (-3.7°C) and an average low-temperature of 15.3°F (-9.3°C).

What is the temperature in January in Brookfield?

The average high-temperature, in January, is 25.3°F (-3.7°C), while the average low-temperature is 15.3°F (-9.3°C).

What is the most humid month in Brookfield?

The most humid month in Brookfield is January, with an average relative humidity of 86%.

What is the average humidity in January in Brookfield?

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

How many days does it rain in January in Brookfield?

In Brookfield, in January, during 4.8 rainfall days, 0.91" (23mm) of precipitation is typically accumulated.

What is the snowiest month in Brookfield?

The month with the most snowfall in Brookfield is January, when snow falls for 12.3 days and typically aggregates up to 3.39" (86mm) of snow.

How much does it snow in Brookfield in January?

In Brookfield, Wisconsin, in January, during 12.3 snowfall days, 3.39" (86mm) of snow is typically accumulated.

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

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

When is the sunrise / sunset in January in Brookfield?

In January, on the first day of the month, sunrise is at 7:23 am and sunset at 4:28 pm. On the last day of the month, in Brookfield, sunrise is at 7:08 am and sunset at 5:03 pm CST.

What is the month with the least sunshine in Brookfield?

The month with the least sunshine is January, with an average of 3.5h of sunshine.

How long on average sun shines in January in Brookfield?

In January, the average sunshine duration is 3.5h.

What is the month with the lowest UV index in Brookfield?

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

What is the UV index reading in January in Brookfield?

In January, the average daily maximum UV index in Brookfield is 1. A UV Index of 2, and less, symbolizes a minimal hazard to health 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
Brookfield, WI

Average temperature in January - Brookfield, WI
  • Average high temperature in January: 25.3°F

The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (25.3°F).

  • Average low temperature in January: 15.3°F

The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).

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Average pressure in January
Brookfield, WI

Average pressure in January - Brookfield, 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
Brookfield, WI

Average wind speed in January - Brookfield, WI
  • Average wind speed in January: 11mph

The windiest month (with the highest average wind speed) is January (11mph).
The calmest month (with the lowest average wind speed) is July (6.9mph).

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Average humidity in January
Brookfield, WI

Average humidity in January - Brookfield, 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 (76%).

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Average rainfall in January
Brookfield, WI

Average rainfall in January - Brookfield, WI
  • Average rainfall in January: 0.91"

The wettest month (with the highest rainfall) is July (2.6").
The driest month (with the least rainfall) is December (0.75").

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Average rainfall days in January
Brookfield, WI

Average rainfall days in January - Brookfield, WI
  • Average rainfall days in January: 4.8 days

The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is February (3.8 days).

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Average snowfall in January
Brookfield, WI

Average snowfall in January - Brookfield, WI
  • Average snowfall in January: 3.39"

The month with the highest snowfall is January (3.39").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Brookfield, WI

Average snowfall days in January - Brookfield, WI
  • Average snowfall days in January: 12.3 days

The month with the highest number of snowfall days is January (12.3 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
Brookfield, WI

Average daylight in January / Average sunshine in January - Brookfield, 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 month with the most sunshine is 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
Brookfield, WI

Average sunshine days in January - Brookfield, WI
  • Average sunshine days in January: 15 days

The month with the most sunshine days is December (18.6 days).
The month with the least sunshine days is July (12.1 days).

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Average UV index in January
Brookfield, WI

Average UV index in January - Brookfield, 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 and December (UV index 1).

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Average cloud cover in January
Brookfield, WI

Average cloud cover in January - Brookfield, WI
  • Average cloud cover in January: 63

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

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Average visibility in January
Brookfield, WI

Average visibility in January - Brookfield, 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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