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 coldest month, with an average high-temperature of 24.8°F (-4°C) and an average low-temperature of 12.9°F (-10.6°C).Humidity
With an average relative humidity of 87%, January is the most humid month.Rainfall
The months with the least rainfall in Williams Bay are January and December Rain falls for 3.8 days and accumulates 0.79" (20mm) of rain.Snowfall
January through April, October through December are months with snowfall in Williams Bay. The month with the most snowfall is January, when snow falls for 13.4 days and typically aggregates up to 3.35" (85mm) of snow.Daylight
The average length of the day in January is 9h and 29min.On the first day of the month, sunrise is at 7:23 am and sunset at 4:31 pm. On the last day of January, in Williams Bay, sunrise is at 7:09 am and sunset at 5:05 pm CST.
Sunshine
January has the least sunshine of the year, with an average of 3.5h of sunshine.UV index
The months with the lowest UV index in Williams Bay are January and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: An average UV index of 1 in January transforms into this advice:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month in Williams Bay?
How cold is January in Williams Bay?
What is the most humid month in Williams Bay?
What is the average humidity in January in Williams Bay?
What is the driest month in Williams Bay?
How much does it rain in Williams Bay in January?
What is the snowiest month in Williams Bay?
How much does it snow in Williams Bay in January?
How many hours of daylight does Williams Bay have in January?
When are sunrise and sunset in January in Williams Bay?
What is the month with the least sunshine in Williams Bay?
How many hours of sunshine does Williams Bay have in January?
What is the month with the lowest UV index in Williams Bay?
How high is the UV index in January in Williams Bay?
Average temperature in January
Williams Bay, WI
- Average high temperature in January: 24.8°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (24.8°F).
- Average low temperature in January: 12.9°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).
Average pressure in January
Williams Bay, WI
- Average pressure in January: 30.11"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in January
Williams Bay, WI
- Average wind speed in January: 9.6mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in January
Williams Bay, WI
- Average humidity in January: 87%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and October (77%).
Average rainfall in January
Williams Bay, WI
- Average rainfall in January: 0.79"
The wettest month (with the highest rainfall) is July (2.56").
The driest months (with the least rainfall) are January and December (0.79").
Average rainfall days in January
Williams Bay, WI
- Average rainfall days in January: 3.8 days
The month with the highest number of rainy days is July (17.4 days).
The months with the least rainy days are January and February (3.8 days).
Average snowfall in January
Williams Bay, WI
- Average snowfall in January: 3.35"
The month with the highest snowfall is January (3.35").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Williams Bay, WI
- Average snowfall days in January: 13.4 days
The month with the highest number of snowfall days is January (13.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Williams Bay, WI
- Average daylight in January: 9h and 3min
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: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in January
Williams Bay, WI
- Average sunshine days in January: 16.3 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in January
Williams Bay, WI
- Average UV index in January: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in January
Williams Bay, 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, August and September (Cloud cover 35).
Average visibility in January
Williams Bay, WI
- Average visibility in January: 5mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Williams Bay, Wisconsin, USA
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