January weather forecastEugene, OR

January
Weather in January
The weather in January in Eugene, Oregon is characterized by chilly temperatures and high levels of humidity, signs of a true winter month. Despite the frosty temperatures, Eugene experiences mild snowfall with just 0.39" (10mm) on an average. The rainfall is notably high, with precipitation observed on approximately 11 days during the month. With only 4.3 hours of sunshine and reduced visibility due to overcast skies, the city lends itself to a typical winter wonderland. Comparing it with the weather in December, January is relatively colder and has shorter daylight hours.Temperature
With the transition into January, Eugene notes an average high-temperature of a still chilly 49.3°F (9.6°C), closely resembling December. The average temperature during January nights dips to an icy 35.2°F (1.8°C).Humidity
January through March and December, with an average relative humidity of 86%, are the most humid months.Rainfall
In Eugene, in January, it is raining for 11 days, with typically 1.18" (30mm) of accumulated precipitation. Throughout the year, there are 109.9 rainfall days, and 10.08" (256mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March and December. In Eugene, in January, during 1 snowfall days, 0.39" (10mm) of snow is typically accumulated. In Eugene, during the entire year, snow falls for 5 days and aggregates up to 2.36" (60mm) of snow.Daylight
In January, the average length of the day is 9h and 20min.On the first day of January, sunrise is at 7:47 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 5:20 pm PST.
Sunshine
In January, the average sunshine is 4.3h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for average individuals.Note: The UV index of 2 during January translates into the following guidance:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. When the Sun is at its strongest around midday, find shade and limit exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Eugene, OR
- Average high temperature in January: 49.3°F
The warmest month (with the highest average high temperature) is August (81.3°F).
The month with the lowest average high temperature is December (46.2°F).
- Average low temperature in January: 35.2°F
The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is December (33.8°F).
Average pressure in January
Eugene, OR
- Average pressure in January: 30.12"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in January
Eugene, OR
- Average wind speed in January: 4.5mph
The windiest months (with the highest average wind speed) are January and March (4.5mph).
The calmest months (with the lowest average wind speed) are August and September (3.6mph).
Average humidity in January
Eugene, OR
- Average humidity in January: 86%
The months with the highest relative humidity are January, February, March and December (86%).
The month with the lowest relative humidity is August (68%).
Average rainfall in January
Eugene, OR
- Average rainfall in January: 1.18"
The wettest month (with the highest rainfall) is December (1.54").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in January
Eugene, OR
- Average rainfall days in January: 11 days
The month with the highest number of rainy days is December (13.4 days).
The month with the least rainy days is August (2.5 days).
Average snowfall in January
Eugene, OR
- Average snowfall in January: 0.39"
The month with the highest snowfall is February (1.5").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in January
Eugene, OR
- Average snowfall days in January: 1 days
The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Eugene, OR
- Average daylight in January: 9h and 18min
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: 4h and 18min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).
Average sunshine days in January
Eugene, OR
- Average sunshine days in January: 17.5 days
The month with the most sunshine days is August (27.3 days).
The month with the least sunshine days is February (14.3 days).
Average UV index in January
Eugene, OR
- Average UV index in January: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Eugene, OR
- Average cloud cover in January: 55
The months with the most cloud cover are February and March (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in January
Eugene, OR
- Average visibility in January: 4mi
The months with the highest visibility are June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, May, November and December (4mi).





