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
In West Allis, the month of January registers the lowest temperatures, averaging 26.1°F (-3.3°C) at the peak and 16.2°F (-8.8°C) at the lowest.Humidity
The most humid month in West Allis is January, with an average relative humidity of 85%.Rainfall
In West Allis, Wisconsin, in January, during 3.6 rainfall days, 0.91" (23mm) of precipitation is typically accumulated. Throughout the year, in West Allis, there are 126 rainfall days, and 19.37" (492mm) of precipitation is accumulated.Snowfall
Months with snowfall in West Allis are January through April, October through December. The month with the most snowfall is January, when snow falls for 11.6 days and typically aggregates up to 3.03" (77mm) of snow.Daylight
The average length of the day in January in West Allis is 9h and 26min.On the first day of January in West Allis, 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
The month with the least sunshine in West Allis is January, 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 in West Allis, Wisconsin. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In January, the average maximum UV index of 1 translates into the following recommendations:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Frequently asked questions
What month is the coldest in West Allis?
How cold is it in West Allis in January?
What is the most humid month in West Allis?
What is the average humidity in January in West Allis?
How much does it rain in West Allis in January?
When does it snow the most in West Allis?
How many days does it snow in January in West Allis?
What is the average length of the day in January in West Allis?
When is the sunrise / sunset in January in West Allis?
What is the month with the least sunshine in West Allis?
How long on average sun shines in January in West Allis?
When is the lowest UV index in West Allis?
How high is the UV index in January in West Allis?
Average temperature in January
West Allis, WI
- Average high temperature in January: 26.1°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 (26.1°F).
- Average low temperature in January: 16.2°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in January
West Allis, 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
West Allis, 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
West Allis, 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
West Allis, WI
- Average rainfall in January: 0.91"
The wettest month (with the highest rainfall) is July (2.56").
The driest months (with the least rainfall) are February and December (0.83").
Average rainfall days in January
West Allis, WI
- Average rainfall days in January: 3.6 days
The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in January
West Allis, WI
- Average snowfall in January: 3.03"
The month with the highest snowfall is January (3.03").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
West Allis, WI
- Average snowfall days in January: 11.6 days
The month with the highest number of snowfall days is January (11.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
West Allis, 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 18min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in January
West Allis, WI
- Average sunshine days in January: 15.2 days
The month with the most sunshine days is November (17.4 days).
The months with the least sunshine days are July and August (12.7 days).
Average UV index in January
West Allis, 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).
Average cloud cover in January
West Allis, WI
- Average cloud cover in January: 64
The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 29).
Average visibility in January
West Allis, 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).
West Allis, Wisconsin, USA
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