December weather forecast
Redmond, WA

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Weather in December

Redmond, Washington, USA, in December is synonymous with winter's onset. The city greets December's chill with shortened hours of daylight, a mere 8.5 hours on average. Temperatures hover between a low of 34°F (1.1°C) and a high of 42.1°F (5.6°C), reinforcing the need for heavy winter wear. Albeit sparse, snowfall makes a comeback with 0.47" (12mm) recorded on average. As Redmond wraps up the year, December subtly prepares the city for January's deep winter experience, thereby completing the full weather cycle.

Temperature

December is the month when Redmond experiences its coldest temperatures, averaging a high of 42.1°F (5.6°C) and a low of 34°F (1.1°C).

Humidity

The months with the highest humidity are January, February and December, with an average relative humidity of 85%.

Rainfall

The month with the most rainfall in Redmond is December, when the rain falls for 18.7 days and typically aggregates up to 4.37" (111mm) of precipitation.

Snowfall

January through March, November and December are months with snowfall. In December, in Redmond, it is snowing for 1.3 days. Throughout December, 0.47" (12mm) of snow is accumulated. In Redmond, during the entire year, snow falls for 8.6 days and aggregates up to 4.53" (115mm) of snow.

Daylight

The month with the shortest days in Redmond, Washington, is December, with an average of 8h and 30min of daylight.
On the first day of December, sunrise is at 7:36 am and sunset at 4:18 pm. On the last day of the month, sunrise is at 7:56 am and sunset at 4:26 pm PST.

Sunshine

The month with the least sunshine is December, with an average of 4.2h of sunshine.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Redmond, Washington. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
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Frequently asked questions

What month is the coldest in Redmond?

The coldest time of the year is December, with temperatures averaging a high of 42.1°F (5.6°C) and a low of 34°F (1.1°C).

How cold is it in Redmond in December?

December temperatures vary between a high-temperature of 42.1°F (5.6°C) and a low-temperature of 34°F (1.1°C).

What are the most humid months in Redmond?

January, February and December, with an average relative humidity of 85%, are most humid months in Redmond, Washington.

What is the average humidity in December in Redmond?

In Redmond, Washington, the average relative humidity in December is 85%.

What is the rainiest month in Redmond?

December is the month with the most rainfall in Redmond. Rain falls for 18.7 days and accumulates 4.37" (111mm) of precipitation.

How many days does it rain in December in Redmond?

In Redmond, Washington, during December, the rain falls for 18.7 days and regularly aggregates up to 4.37" (111mm) of precipitation.

How many days does it snow in December in Redmond?

In December, in Redmond, Washington, it is snowing for 1.3 days. Throughout December, 0.47" (12mm) of snow is accumulated.

What is the month with the shortest days in Redmond?

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

What is the average length of the day in December in Redmond?

In Redmond, Washington, the average day length in December is 8h and 30min.

What time are sunrise and sunset in December in Redmond?

On the first day of December, sunrise is at 7:36 am and sunset at 4:18 pm. On the last day of the month, sunrise is at 7:56 am and sunset at 4:26 pm PST.

What is the month with the least sunshine in Redmond?

With an average of 4.2h of sunshine, December has the least sunshine of the year in Redmond, Washington.

How many hours of sunshine does Redmond have in December?

The average sunshine duration in December is 4.2h.

When is the lowest UV index in Redmond?

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

What is the UV index intensity in December in Redmond?

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

Average temperature in December - Redmond, WA
  • Average high temperature in December: 42.1°F

The warmest month (with the highest average high temperature) is August (76.3°F).
The month with the lowest average high temperature is December (42.1°F).

  • Average low temperature in December: 34°F

The month with the highest average low temperature is August (52.5°F).
The coldest month (with the lowest average low temperature) is December (34°F).

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Average pressure in December
Redmond, WA

Average pressure in December - Redmond, WA
  • Average pressure in December: 30.09"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).

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Average wind speed in December
Redmond, WA

Average wind speed in December - Redmond, WA
  • Average wind speed in December: 4.7mph

The windiest months (with the highest average wind speed) are January and March (5mph).
The calmest months (with the lowest average wind speed) are July and August (3.4mph).

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Average humidity in December
Redmond, WA

Average humidity in December - Redmond, WA
  • Average humidity in December: 85%

The months with the highest relative humidity are January, February and December (85%).
The month with the lowest relative humidity is July (70%).

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Average rainfall in December
Redmond, WA

Average rainfall in December - Redmond, WA
  • Average rainfall in December: 4.37"

The wettest month (with the highest rainfall) is December (4.37").
The driest month (with the least rainfall) is July (0.39").

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Average rainfall days in December
Redmond, WA

Average rainfall days in December - Redmond, WA
  • Average rainfall days in December: 18.7 days

The month with the highest number of rainy days is March (19.7 days).
The month with the least rainy days is August (5.9 days).

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Average snowfall in December
Redmond, WA

Average snowfall in December - Redmond, WA
  • Average snowfall in December: 0.47"

The month with the highest snowfall is February (2.05").
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
Redmond, WA

Average snowfall days in December - Redmond, WA
  • Average snowfall days in December: 1.3 days

The month with the highest number of snowfall days is February (3.2 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
Redmond, WA

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

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in December: 4h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 12min).

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Average sunshine days in December
Redmond, WA

Average sunshine days in December - Redmond, WA
  • Average sunshine days in December: 11 days

The month with the most sunshine days is August (23.3 days).
The month with the least sunshine days is February (8.8 days).

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Average UV index in December
Redmond, WA

Average UV index in December - Redmond, WA
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in December
Redmond, WA

Average cloud cover in December - Redmond, WA
  • Average cloud cover in December: 56

The months with the most cloud cover are January and December (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 25).

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Average visibility in December
Redmond, WA

Average visibility in December - Redmond, WA
  • Average visibility in December: 5mi

The months with the highest visibility are June, July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, May, October, November and December (5mi).

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Redmond, Washington, USA

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