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
During the coldest month, January, temperatures average a high of 29.7°F (-1.3°C) and a low of 20.8°F (-6.2°C).Humidity
The average relative humidity in January in Portland is 85%.Rainfall
In January, the rain falls for 8.1 days. Throughout January, 2.4" (61mm) of precipitation is accumulated. Throughout the year, there are 176.8 rainfall days, and 33.03" (839mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Portland, New York, in January, during 16 snowfall days, 4.29" (109mm) of snow is typically accumulated. In Portland, during the entire year, snow falls for 67.8 days and aggregates up to 22.01" (559mm) of snow.Daylight
The average length of the day in January in Portland is 9h and 30min.On the first day of January, sunrise is at 7:47 am and sunset at 4:55 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 5:29 pm EST.
Sunshine
The month with the least sunshine is January, with an average of 2.4h of sunshine.UV index
The months with the lowest UV index in Portland are January and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 1 during January translates into the following recommendations:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest in Portland?
How cold is January 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 is the sunrise / 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?
What is the month with the lowest UV index in Portland?
How high is the UV index in January in Portland?
Average temperature in January
Portland, NY
- Average high temperature in January: 29.7°F
The warmest month (with the highest average high temperature) is July (74.1°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in January: 20.8°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).
Average pressure in January
Portland, NY
- Average pressure in January: 30.06"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Portland, NY
- Average wind speed in January: 14.2mph
The windiest month (with the highest average wind speed) is January (14.2mph).
The calmest month (with the lowest average wind speed) is July (8.1mph).
Average humidity in January
Portland, NY
- Average humidity in January: 85%
The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is September (77%).
Average rainfall in January
Portland, NY
- Average rainfall in January: 2.4"
The wettest month (with the highest rainfall) is October (3.27").
The driest month (with the least rainfall) is September (2.24").
Average rainfall days in January
Portland, NY
- Average rainfall days in January: 8.1 days
The month with the highest number of rainy days is October (19.2 days).
The month with the least rainy days is January (8.1 days).
Average snowfall in January
Portland, NY
- Average snowfall in January: 4.29"
The month with the highest snowfall is February (5.75").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Portland, NY
- Average snowfall days in January: 16 days
The month with the highest number of snowfall days is January (16 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, NY
- Average daylight in January: 9h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January: 2h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in January
Portland, NY
- Average sunshine days in January: 5.4 days
The month with the most sunshine days is September (11.3 days).
The month with the least sunshine days is January (5.4 days).
Average UV index in January
Portland, NY
- 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
Portland, NY
- Average cloud cover in January: 77
The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in January
Portland, NY
- Average visibility in January: 4mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Portland, New York, USA
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