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 stands out as Portland's coldest month, with temperatures ranging between an average high of 27.1°F (-2.7°C) and a low of 17.1°F (-8.3°C).Humidity
With an average relative humidity of 88%, January is the most humid month in Portland.Rainfall
In Portland, during January, the rain falls for 6 days and regularly aggregates up to 0.79" (20mm) of precipitation. In Portland, during the entire year, the rain falls for 121.9 days and collects up to 12.01" (305mm) of precipitation.Snowfall
Months with snowfall in Portland are January through May, October through December. In Portland, during January, snow falls for 15.2 days and regularly aggregates up to 1.73" (44mm) of snow. Throughout the year, in Portland, there are 54.5 snowfall days, and 7.8" (198mm) of snow is accumulated.Daylight
The average length of the day in January is 9h and 27min.On the first day of January in Portland, sunrise is at 8:10 am and sunset at 5:15 pm. On the last day of the month, sunrise is at 7:55 am and sunset at 5:50 pm EST.
Sunshine
January has the least sunshine of the year, with an average of 2.7h of sunshine.UV index
The months with the lowest UV index in Portland are January, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the average person.Note: The maximum UV index of 1 during January translates into these guidelines:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month in Portland?
How cold is January in Portland?
What is the most humid month in Portland?
What is the average humidity in January in Portland?
How many days does it rain in January in Portland?
How much does it snow in Portland in January?
What is the average length of the day in January in Portland?
When are sunrise and sunset in January in Portland?
What is the month with the least sunshine in Portland?
How many hours of sunshine does Portland have in January?
When is the lowest UV index in Portland?
How high is the UV index in January in Portland?
Average temperature in January
Portland, MI
- Average high temperature in January: 27.1°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (27.1°F).
- Average low temperature in January: 17.1°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in January
Portland, MI
- Average pressure in January: 30.07"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
Portland, MI
- Average wind speed in January: 9.9mph
The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in January
Portland, MI
- Average humidity in January: 88%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is April (76%).
Average rainfall in January
Portland, MI
- Average rainfall in January: 0.79"
The wettest month (with the highest rainfall) is May (1.77").
The driest months (with the least rainfall) are February and November (0.63").
Average rainfall days in January
Portland, MI
- Average rainfall days in January: 6 days
The month with the highest number of rainy days is May (14.5 days).
The month with the least rainy days is February (4.6 days).
Average snowfall in January
Portland, MI
- Average snowfall in January: 1.73"
The month with the highest snowfall is December (2.05").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Portland, MI
- Average snowfall days in January: 15.2 days
The month with the highest number of snowfall days is January (15.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Portland, MI
- 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: 2h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days in January
Portland, MI
- Average sunshine days in January: 13.9 days
The month with the most sunshine days is September (17.8 days).
The month with the least sunshine days is February (13.2 days).
Average UV index in January
Portland, MI
- 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
Portland, MI
- Average cloud cover in January: 72
The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in January
Portland, MI
- Average visibility in January: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Portland, Michigan, USA
Weather forecast for your location
2. Allow the app to use your location