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
With the transition into January, Wilsonville notes an average high-temperature of a still frosty 46°F (7.8°C), closely resembling December. Nightly temperatures drop to an average low of 35.1°F (1.7°C) in January.Humidity
January, February and December, with an average relative humidity of 85%, are the most humid months in Wilsonville.Rainfall
In Wilsonville, Oregon, in January, it is raining for 18.4 days, with typically 4.21" (107mm) of accumulated precipitation. In Wilsonville, Oregon, during the entire year, the rain falls for 173.8 days and collects up to 29.96" (761mm) of precipitation.Snowfall
Months with snowfall in Wilsonville are January through March, November and December. In Wilsonville, in January, during 1.4 snowfall days, 0.55" (14mm) of snow is typically accumulated. Throughout the year, there are 6.1 snowfall days, and 3.66" (93mm) of snow is accumulated.Daylight
In Wilsonville, Oregon, the average length of the day in January is 9h and 13min.On the first day of the month, sunrise is at 7:50 am and sunset at 4:38 pm. On the last day of January, sunrise is at 7:32 am and sunset at 5:16 pm PST.
Sunshine
In Wilsonville, the average sunshine in January 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 minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: A daily maximum UV index of 2 in January translates into the following instructions:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Frequently asked questions
What is the average January temperature in Wilsonville?
What is the most humid month in Wilsonville?
What is the average humidity in January in Wilsonville?
How many days does it rain in January in Wilsonville?
How much does it snow in Wilsonville in January?
What is the average length of the day in January in Wilsonville?
When is the sunrise / sunset in January in Wilsonville?
How many hours of sunshine does Wilsonville have in January?
What are the months with the lowest UV index in Wilsonville?
What is the UV index intensity in January in Wilsonville?
Average temperature in January
Wilsonville, OR
- Average high temperature in January: 46°F
The warmest month (with the highest average high temperature) is August (81°F).
The month with the lowest average high temperature is December (44.2°F).
- Average low temperature in January: 35.1°F
The month with the highest average low temperature is August (54°F).
The coldest month (with the lowest average low temperature) is December (34.3°F).
Average pressure in January
Wilsonville, 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
Wilsonville, OR
- Average wind speed in January: 5.5mph
The windiest months (with the highest average wind speed) are January and February (5.5mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity in January
Wilsonville, OR
- Average humidity in January: 85%
The months with the highest relative humidity are January, February and December (85%).
The month with the lowest relative humidity is August (65%).
Average rainfall in January
Wilsonville, OR
- Average rainfall in January: 4.21"
The wettest month (with the highest rainfall) is December (4.49").
The driest months (with the least rainfall) are July and August (0.31").
Average rainfall days in January
Wilsonville, OR
- Average rainfall days in January: 18.4 days
The month with the highest number of rainy days is March (20.9 days).
The months with the least rainy days are July and August (4.4 days).
Average snowfall in January
Wilsonville, OR
- Average snowfall in January: 0.55"
The month with the highest snowfall is February (1.26").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Wilsonville, OR
- Average snowfall days in January: 1.4 days
The month with the highest number of snowfall days is February (2.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Wilsonville, 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: 4h and 2min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in January
Wilsonville, OR
- Average sunshine days in January: 11 days
The month with the most sunshine days is July (25 days).
The month with the least sunshine days is March (8.3 days).
Average UV index in January
Wilsonville, 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
Wilsonville, OR
- Average cloud cover in January: 56
The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in January
Wilsonville, OR
- Average visibility in January: 5mi
The months with the highest visibility are July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, May, June, October, November and December (5mi).
Wilsonville, Oregon, USA
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