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, recording an average high temperature of 51.6°F (10.9°C) and a low temperature of 38.1°F (3.4°C), is Portland's coldest month.Humidity
In January, the average relative humidity is 76%.Rainfall
In Portland, in January, during 12.1 rainfall days, 3.39" (86mm) of precipitation is typically accumulated. In Portland, during the entire year, the rain falls for 158.8 days and collects up to 40.67" (1033mm) of precipitation.Snowfall
January through March and November are months with snowfall. January is the first month it typically snows. Throughout January, in the average 0.8 snowfall days, it receives 0.16" (4mm) of snow. In Portland, during the entire year, snow falls for 2.7 days and aggregates up to 0.75" (19mm) of snow.Daylight
In Portland, the average length of the day in January is 10h and 15min.On the first day of the month, sunrise is at 7:09 am and sunset at 5:09 pm. On the last day of January, sunrise is at 7:02 am and sunset at 5:36 pm CST.
Sunshine
In Portland, the average sunshine in January is 5.2h.UV index
January and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 3 in January translates into this advice:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. 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 time of year?
What is the average January temperature?
What is the average humidity in January?
How many days does it rain in January?
When does it start snowing?
How many hours of daylight does Portland have in January?
When is the sunrise / sunset in January?
How many hours of sunshine does Portland have in January?
When is the lowest UV index?
What is the UV index reading in January in Portland?
Average temperature in January
Portland, AR
- Average high temperature in January: 51.6°F
The warmest month (with the highest average high temperature) is July (90.7°F).
The month with the lowest average high temperature is January (51.6°F).
- Average low temperature in January: 38.1°F
The month with the highest average low temperature is July (73.6°F).
The coldest month (with the lowest average low temperature) is January (38.1°F).
Average pressure in January
Portland, AR
- Average pressure in January: 30.17"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in January
Portland, AR
- Average wind speed in January: 9.3mph
The windiest month (with the highest average wind speed) is February (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in January
Portland, AR
- Average humidity in January: 76%
The months with the highest relative humidity are February and March (79%).
The month with the lowest relative humidity is October (67%).
Average rainfall in January
Portland, AR
- Average rainfall in January: 3.39"
The wettest month (with the highest rainfall) is April (4.49").
The driest month (with the least rainfall) is November (2.44").
Average rainfall days in January
Portland, AR
- Average rainfall days in January: 12.1 days
The month with the highest number of rainy days is July (16.7 days).
The month with the least rainy days is October (9.3 days).
Average snowfall in January
Portland, AR
- Average snowfall in January: 0.16"
The month with the highest snowfall is February (0.43").
The months with the least snowfall are April, May, June, July, August, September, October and December (0").
Average snowfall days in January
Portland, AR
- Average snowfall days in January: 0.8 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September, October and December (0 days).
Average daylight in January /
Average sunshine in January
Portland, AR
- Average daylight in January: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January: 5h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in January
Portland, AR
- Average sunshine days in January: 17.5 days
The month with the most sunshine days is October (19.6 days).
The month with the least sunshine days is July (12 days).
Average UV index in January
Portland, AR
- Average UV index in January: 3
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in January
Portland, AR
- Average cloud cover in January: 42
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is June (Cloud cover 25).
Average visibility in January
Portland, AR
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Portland, Arkansas, USA
Weather forecast for your location
2. Allow the app to use your location