December weather forecast
Willamina, OR

Weather in December

December, the first month of the winter, in Willamina, is also a frosty month, with average temperature varying between 43.5°F (6.4°C) and 33.3°F (0.7°C).

Temperature

With an average high-temperature of 43.5°F (6.4°C) and an average low-temperature of 33.3°F (0.7°C), December is the coldest month.

Humidity

Months with the highest humidity are February and December, with an average relative humidity of 89%.

Rainfall

The month with the most rainfall in Willamina is December when the rain falls for 17.1 days and typically aggregates up to 2.56" (65mm) of precipitation.

Snowfall

Months with snowfall are January through March, November and December. In December, in Willamina, it is snowing for 0.8 days. Throughout December, 0.16" (4mm) of snow is accumulated. Throughout the year, in Willamina, there are 5.8 snowfall days, and 1.77" (45mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Willamina, with an average of 8.8h of daylight.

Sunshine

The average sunshine is 3.6h.

UV index

Months with the lowest UV index in Willamina are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 2 transform into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
[Resources]

FAQ

What is the coldest month in Willamina?

The coldest month in Willamina, Oregon, is December, with an average high-temperature of 43.5°F (6.4°C) and an average low-temperature of 33.3°F (0.7°C).

What are the most humid months in Willamina?

February and December, with an average relative humidity of 89%, are most humid months in Willamina, Oregon.

What is the average humidity in December in Willamina?

In December, the average relative humidity is 89%.

What is the rainiest month in Willamina?

December is the month with the most rainfall in Willamina, Oregon. Rain falls for 17.1 days and accumulates 2.56" (65mm) of precipitation.

How many days does it rain in December in Willamina?

In December, in Willamina, the rain falls for 17.1 days. Throughout December, 2.56" (65mm) of precipitation is accumulated.

How many days does it snow in December in Willamina?

In December, in Willamina, it is snowing for 0.8 days. Throughout December, 0.16" (4mm) of snow is accumulated.

What is the month with the shortest days in Willamina?

The month with the shortest days is December, with an average of 8.8h of daylight.

How many hours of daylight does Willamina have in December?

In December, the average length of the day in Willamina is 8.8h.

How long on average sun shines in December in Willamina?

The average sunshine in December is 3.6h.

What are the months with the lowest UV index in Willamina?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Willamina.

How high is the UV index in December in Willamina?

In December, the average daily maximum UV index in Willamina is 2. A UV Index value of 2, and less, symbolizes a low health threat from the exposure to the Sun's UV radiation.

Average temperature in December
Willamina, OR

Average temperature in December - Willamina, OR
  • Average high temperature in December: 43.5°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 December: 33.3°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).

[Resources]

Average pressure in December
Willamina, OR

Average pressure in December - Willamina, OR
  • Average pressure in December: 30.09"

The month with the highest atmospheric pressure is January (30.1").
The month with the lowest atmospheric pressure is September (30.01").

[Resources]

Average wind speed in December
Willamina, OR

Average wind speed in December - Willamina, OR
  • Average wind speed in December: 4.5mph

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).

[Resources]

Average humidity in December
Willamina, OR

Average humidity in December - Willamina, OR
  • Average humidity in December: 89%

Months with the highest relative humidity are February and December (89%).
The month with the lowest relative humidity is August (71%).

[Resources]

Average rainfall in December
Willamina, OR

Average rainfall in December - Willamina, OR
  • Average rainfall in December: 2.56"

The wettest month (with the highest rainfall) is December (2.56").
The driest month (with the least rainfall) is July (0.24").

[Resources]

Average rainfall days in December
Willamina, OR

Average rainfall days in December - Willamina, OR
  • Average rainfall days in December: 17.1 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).

[Resources]

Average snowfall in December
Willamina, OR

Average snowfall in December - Willamina, OR
  • Average snowfall in December: 0.16"

The month with the highest snowfall is February (0.94").
Months with the least snowfall are April, May, June, July, August, September and October (0").

[Resources]

Average snowfall days in December
Willamina, OR

Average snowfall days in December - Willamina, OR
  • Average snowfall days in December: 0.8 days

The month with the highest number of snowfall days is February (2.3 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

[Resources]

Average daylight in December /
Average sunshine in December
Willamina, OR

Average daylight in December / Average sunshine in December - Willamina, OR
  • Average daylight in December: 8.8h

The month with the longest days is June (Average daylight: 15.6h).
The month with the shortest days is December (Average daylight: 8.8h).

  • Average sunshine in December: 3.6h

The month with the most sunshine is August (Average sunshine: 10.5h).
The month with the least sunshine is February (Average sunshine: 3.4h).

[Resources]

Average sunshine days in December
Willamina, OR

Average sunshine days in December - Willamina, OR
  • Average sunshine days in December: 11.8 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).

[Resources]

Average UV index in December
Willamina, OR

Average UV index in December - Willamina, OR
  • Average UV index in December: 2

Months with the highest UV index are June and July (UV index 5).
Months with the lowest UV index are January, February, November and December (UV index 2).

[Resources]

Average cloud cover in December
Willamina, OR

Average cloud cover in December - Willamina, OR
  • Average cloud cover in December: 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).

[Resources]

Average visibility in December
Willamina, OR

Average visibility in December - Willamina, OR
  • Average visibility in December: 4mi

Months with the highest visibility are June, July, August and September (5mi).
Months with the lowest visibility are January, February, March, April, May, October, November and December (4mi).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location