Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
January is the month that records the lowest temperatures in Wauwatosa, with averages ranging from a high of 26.1°F (-3.3°C) to a low of 15.8°F (-9°C).Humidity
The most humid month in Wauwatosa is January, 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. Throughout the year, in Wauwatosa, Wisconsin, there are 75.6 rainfall days, and 5.83" (148mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. The month with the most snowfall 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 January in Wauwatosa, sunrise is at 7:23 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:02 pm CST.
Sunshine
January has the least sunshine of the year, with an average of 3.5h of sunshine.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index, 1 in January, converts into the following recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year in Wauwatosa?
How cold is January in Wauwatosa?
What is the most humid month in Wauwatosa?
What is the average humidity in January in Wauwatosa?
How many days does it rain in January in Wauwatosa?
What is the snowiest month in Wauwatosa?
How many days does it snow in January in Wauwatosa?
How many hours of daylight does Wauwatosa have in January?
When is the sunrise / sunset in January in Wauwatosa?
What is the month with the least sunshine in Wauwatosa?
How long on average sun shines in January in Wauwatosa?
What is the month with the lowest UV index in Wauwatosa?
What is the UV index intensity in January in Wauwatosa?
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).
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).
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).
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%).
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").
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).
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").
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).
Average daylight in January /
Average sunshine in January
Wauwatosa, WI
- Average daylight in January: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January: 3h and 3min
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).
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).
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).
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).
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).
Wauwatosa, Wisconsin, USA
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