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
Waterloo's January weather, with an average high temperature of 23.7°F (-4.6°C) and an average low temperature of 11.1°F (-11.6°C), tends to be the coldest of the year.Humidity
January is the most humid month, with an average relative humidity of 89%.Rainfall
In Waterloo, in January, during 4.2 rainfall days, 0.94" (24mm) of precipitation is typically accumulated. Throughout the year, there are 132.3 rainfall days, and 21.38" (543mm) of precipitation is accumulated.Snowfall
Months with snowfall in Waterloo are January through April, October through December. The month with the most snowfall in Waterloo is January, when snow falls for 13.3 days and typically aggregates up to 3.31" (84mm) of snow.Daylight
The average length of the day in January is 9h and 25min.On the first day of the month, sunrise is at 7:27 am and sunset at 4:31 pm. On the last day of January, in Waterloo, Wisconsin, sunrise is at 7:12 am and sunset at 5:06 pm CST.
Sunshine
With an average of 3.3h of sunshine, January has the least sunshine of the year.UV index
The months with the lowest UV index are January, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The daily maximum UV index of 1 in January interprets into the following advice:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month in Waterloo?
How cold is it in Waterloo in January?
What is the most humid month in Waterloo?
What is the average humidity in January in Waterloo?
How many days does it rain in January in Waterloo?
What is the snowiest month in Waterloo?
How many days does it snow in January in Waterloo?
What is the average length of the day in January in Waterloo?
When are sunrise and sunset in January in Waterloo?
What is the month with the least sunshine in Waterloo?
How long on average sun shines in January in Waterloo?
When is the lowest UV index in Waterloo?
How high is the UV index in January in Waterloo?
Average temperature in January
Waterloo, WI
- Average high temperature in January: 23.7°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (23.7°F).
- Average low temperature in January: 11.1°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (11.1°F).
Average pressure in January
Waterloo, 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
Waterloo, WI
- Average wind speed in January: 9.6mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in January
Waterloo, WI
- Average humidity in January: 89%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is April (76%).
Average rainfall in January
Waterloo, WI
- Average rainfall in January: 0.94"
The wettest month (with the highest rainfall) is June (2.87").
The driest month (with the least rainfall) is December (0.87").
Average rainfall days in January
Waterloo, WI
- Average rainfall days in January: 4.2 days
The month with the highest number of rainy days is July (16.1 days).
The month with the least rainy days is February (3.9 days).
Average snowfall in January
Waterloo, WI
- Average snowfall in January: 3.31"
The month with the highest snowfall is January (3.31").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Waterloo, WI
- Average snowfall days in January: 13.3 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Waterloo, 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 0min).
- Average sunshine in January: 3h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in January
Waterloo, WI
- Average sunshine days in January: 15 days
The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is June (11.3 days).
Average UV index in January
Waterloo, 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, November and December (UV index 1).
Average cloud cover in January
Waterloo, WI
- Average cloud cover in January: 65
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in January
Waterloo, 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).
Waterloo, Wisconsin, USA
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