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's climate shows a minor adjustment in average high-temperatures to a still chilly 45.1°F (7.3°C) from December's 43.5°F (6.4°C). Throughout January, an average nighttime temperature of 34°F (1.1°C) is experienced.Humidity
In Willamina, the average relative humidity in January is 88%.Rainfall
In Willamina, in January, it is raining for 16.8 days, with typically 2.44" (62mm) of accumulated precipitation. Throughout the year, there are 156 rainfall days, and 15.94" (405mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall. In Willamina, during January, snow falls for 1.2 days and regularly aggregates up to 0.35" (9mm) of snow. Throughout the year, there are 5.8 snowfall days, and 1.77" (45mm) of snow is accumulated.Daylight
In January, the average length of the day is 9h and 14min.On the first day of January, sunrise is at 7:52 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 5:19 pm PST.
Sunshine
In January, the average sunshine is 3.6h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: In January, the maximum UV index of 2 suggests these recommendations:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are January temperatures in Willamina?
What is the average humidity in January?
How much does it rain in January?
How much does it snow in January?
What is the average length of the day in January?
When is the sunrise / sunset in January in Willamina?
How long on average sun shines in January?
What are the months with the lowest UV index?
What is the UV index reading in January in Willamina?
Average temperature in January
Willamina, OR
- Average high temperature in January: 45.1°F
The warmest month (with the highest average high temperature) is August (78.4°F).
The month with the lowest average high temperature is December (43.5°F).
- Average low temperature in January: 34°F
The month with the highest average low temperature is August (52.3°F).
The coldest month (with the lowest average low temperature) is December (33.3°F).
Average pressure in January
Willamina, OR
- Average pressure in January: 30.1"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is September (30.01"Hg).
Average wind speed in January
Willamina, OR
- Average wind speed in January: 4.7mph
The windiest month (with the highest average wind speed) is March (5mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity in January
Willamina, OR
- Average humidity in January: 88%
The months with the highest relative humidity are February and December (89%).
The month with the lowest relative humidity is August (71%).
Average rainfall in January
Willamina, OR
- Average rainfall in January: 2.44"
The wettest month (with the highest rainfall) is December (2.56").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in January
Willamina, OR
- Average rainfall days in January: 16.8 days
The month with the highest number of rainy days is March (18.9 days).
The month with the least rainy days is August (4.8 days).
Average snowfall in January
Willamina, OR
- Average snowfall in January: 0.35"
The month with the highest snowfall is February (0.94").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Willamina, OR
- Average snowfall days in January: 1.2 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
Willamina, OR
- Average daylight in January: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in January: 3h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 24min).
Average sunshine days in January
Willamina, OR
- Average sunshine days in January: 11.3 days
The month with the most sunshine days is July (23.7 days).
The month with the least sunshine days is February (9.3 days).
Average UV index in January
Willamina, OR
- Average UV index in January: 2
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Willamina, OR
- Average cloud cover in January: 65
The month with the most cloud cover is February (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in January
Willamina, OR
- Average visibility in January: 4mi
The months with the highest visibility are June, July, August and September (5mi).
The months with the lowest visibility are January, February, March, April, May, October, November and December (4mi).
Willamina, Oregon, USA
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