December weather forecast
Mansfield, WA

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Weather in December

The first month of the winter, December, is also a subzero cold month in Mansfield, Washington, with an average temperature fluctuating between 30.9°F (-0.6°C) and 20.7°F (-6.3°C).

Temperature

In Mansfield, December is the month with the lowest recorded average temperatures, measuring a high of 30.9°F (-0.6°C) and a low of 20.7°F (-6.3°C).

Humidity

In December, the average relative humidity in Mansfield is 86%.

Rainfall

December is the month with the most rainfall in Mansfield. Rain falls for 7.2 days and accumulates 1.22" (31mm) of precipitation.

Snowfall

Months with snowfall are January through March, November and December. December is the month with the most snowfall in Mansfield. Snow falls for 8.8 days and accumulates 4.17" (106mm) of snow.

Daylight

With an average of 8h and 30min of daylight, December has the shortest days of the year in Mansfield.
On the first day of the month, sunrise is at 7:27 am and sunset at 4:08 pm. On the last day of December, in Mansfield, sunrise is at 7:47 am and sunset at 4:16 pm PST.

Sunshine

In Mansfield, the average sunshine in December is 4.2h.

UV index

The months with the lowest UV index are February, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index of 1 in December interprets into the following recommendations:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. To avoid the Sun's strongest rays, limit exposure around the mid-day period. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
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Frequently asked questions

What are the coldest months in Mansfield?

December stands out as Mansfield's coldest month, with an average high-temperature of 30.9°F (-0.6°C) and a low-temperature of 20.7°F (-6.3°C).

How cold is it in Mansfield in December?

The high-temperature in Mansfield during December is 30.9°F (-0.6°C) and the low-temperature is 20.7°F (-6.3°C).

What is the average humidity in December in Mansfield?

In Mansfield, the average relative humidity in December is 86%.

What is the wettest month in Mansfield?

The month with the most rainfall in Mansfield, Washington, is December, when the rain falls for 7.2 days and typically aggregates up to 1.22" (31mm) of precipitation.

How many days does it rain in December in Mansfield?

In Mansfield, during December, the rain falls for 7.2 days and regularly aggregates up to 1.22" (31mm) of precipitation.

What is the snowiest month in Mansfield?

The month with the most snowfall in Mansfield is December, when snow falls for 8.8 days and typically aggregates up to 4.17" (106mm) of snow.

How many days does it snow in December in Mansfield?

In Mansfield, Washington, in December, snow falls for 8.8 days, with typically accumulated 4.17" (106mm) of snow.

What is the month with the shortest days in Mansfield?

With an average of 8h and 30min of daylight, December has the shortest days of the year in Mansfield.

How many hours of daylight does Mansfield have in December?

In Mansfield, Washington, the average day length in December is 8h and 29min.

What time are sunrise and sunset in December in Mansfield?

In December, on the first day of the month, sunrise is at 7:27 am and sunset at 4:08 pm. On the last day of the month, in Mansfield, Washington, sunrise is at 7:47 am and sunset at 4:16 pm PST.

How long on average sun shines in December in Mansfield?

The average sunshine duration in December in Mansfield, Washington, is 4.2h.

What is the month with the lowest UV index in Mansfield?

February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Mansfield.

What is the UV index reading in December in Mansfield?

In December, the average daily maximum UV index in Mansfield is 1. A UV Index estimate of 2, and below, represents a low health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Mansfield, WA

Average temperature in December - Mansfield, WA
  • Average high temperature in December: 30.9°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is December (30.9°F).

  • Average low temperature in December: 20.7°F

The month with the highest average low temperature is August (59.7°F).
The coldest months (with the lowest average low temperature) are January and December (20.7°F).

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Average pressure in December
Mansfield, WA

Average pressure in December - Mansfield, WA
  • Average pressure in December: 30.15"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).

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Average wind speed in December
Mansfield, WA

Average wind speed in December - Mansfield, WA
  • Average wind speed in December: 4.3mph

The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest month (with the lowest average wind speed) is January (4mph).

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Average humidity in December
Mansfield, WA

Average humidity in December - Mansfield, WA
  • Average humidity in December: 86%

The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are July and August (37%).

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Average rainfall in December
Mansfield, WA

Average rainfall in December - Mansfield, WA
  • Average rainfall in December: 1.22"

The wettest month (with the highest rainfall) is December (1.22").
The driest month (with the least rainfall) is July (0.16").

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Average rainfall days in December
Mansfield, WA

Average rainfall days in December - Mansfield, WA
  • Average rainfall days in December: 7.2 days

The month with the highest number of rainy days is March (12.2 days).
The month with the least rainy days is August (3.2 days).

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Average snowfall in December
Mansfield, WA

Average snowfall in December - Mansfield, WA
  • Average snowfall in December: 4.17"

The month with the highest snowfall is December (4.17").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in December
Mansfield, WA

Average snowfall days in December - Mansfield, WA
  • Average snowfall days in December: 8.8 days

The month with the highest number of snowfall days is December (8.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Mansfield, WA

Average daylight in December / Average sunshine in December - Mansfield, WA
  • Average daylight in December: 8h and 3min

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in December: 4h and 1min

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

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Average sunshine days in December
Mansfield, WA

Average sunshine days in December - Mansfield, WA
  • Average sunshine days in December: 16.7 days

The month with the most sunshine days is July (26.4 days).
The month with the least sunshine days is February (15.6 days).

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Average UV index in December
Mansfield, WA

Average UV index in December - Mansfield, WA
  • Average UV index in December: 1

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are February, November and December (UV index 1).

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Average cloud cover in December
Mansfield, WA

Average cloud cover in December - Mansfield, WA
  • Average cloud cover in December: 54

The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are July and August (Cloud cover 12).

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Average visibility in December
Mansfield, WA

Average visibility in December - Mansfield, WA
  • Average visibility in December: 4mi

The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).

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Mansfield, Washington, USA

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