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
The month of January, characterized by an average high of 22.8°F (-5.1°C) and a low of 10.6°F (-11.9°C), is recognized as the coldest.Humidity
The most humid month is January, with an average relative humidity of 89%.Rainfall
The month with the least rainfall in Portage is January, when the rain falls for 3.5 days and typically collects 1.06" (27mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Portage, in January, snow falls for 12 days, with typically accumulated 4.41" (112mm) of snow. Throughout the year, there are 48.4 snowfall days, and 20.28" (515mm) of snow is accumulated.Daylight
In January, the average length of the day in Portage is 9h and 23min.On the first day of the month, sunrise is at 7:30 am and sunset at 4:31 pm. On the last day of January, sunrise is at 7:15 am and sunset at 5:07 pm CST.
Sunshine
The month with the least sunshine in Portage is January, with an average of 3.1h of sunshine.UV index
The months with the lowest UV index in Portage, Wisconsin, are January, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In January, the maximum UV index of 1 suggests this advice:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest in Portage?
How cold is January in Portage?
What is the most humid month in Portage?
What is the average humidity in January in Portage?
What is the driest month in Portage?
How much does it rain in Portage in January?
How much does it snow in Portage in January?
What is the average length of the day in January in Portage?
When is the sunrise / sunset in January in Portage?
What is the month with the least sunshine in Portage?
How many hours of sunshine does Portage have in January?
What are the months with the lowest UV index in Portage?
What is the UV index intensity in January in Portage?
Average temperature in January
Portage, WI
- Average high temperature in January: 22.8°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (22.8°F).
- Average low temperature in January: 10.6°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (10.6°F).
Average pressure in January
Portage, WI
- Average pressure in January: 30.11"Hg
The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in January
Portage, 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 (6.6mph).
Average humidity in January
Portage, 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
Portage, WI
- Average rainfall in January: 1.06"
The wettest month (with the highest rainfall) is June (3.82").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in January
Portage, WI
- Average rainfall days in January: 3.5 days
The month with the highest number of rainy days is June (16.8 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in January
Portage, WI
- Average snowfall in January: 4.41"
The month with the highest snowfall is February (4.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Portage, WI
- Average snowfall days in January: 12 days
The month with the highest number of snowfall days is January (12 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Portage, WI
- Average daylight in January: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January: 3h and 1min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in January
Portage, WI
- Average sunshine days in January: 16.5 days
The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is June (10.9 days).
Average UV index in January
Portage, 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, November and December (UV index 1).
Average cloud cover in January
Portage, WI
- Average cloud cover in January: 67
The month with the most cloud cover is January (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in January
Portage, WI
- Average visibility in January: 5mi
The months with the highest visibility are March, April, May, June, October and November (6mi).
The months with the lowest visibility are January, February, July, August, September and December (5mi).
Portage, Wisconsin, USA
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