December weather forecastRedmond, WA
December
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
Redmond's coldest weather arrives in December, when temperatures average a high of 42.1°F (5.6°C) and a low of 34°F (1.1°C).Humidity
January, February and December, with an average relative humidity of 85%, are the most humid months.Rainfall
The month with the most rainfall is December, when the rain falls for 18.7 days and typically aggregates up to 4.37" (111mm) of precipitation.Snowfall
Months with snowfall in Redmond are January through March, November and December. In Redmond, during December, snow falls for 1.3 days and regularly aggregates up to 0.47" (12mm) of snow. In Redmond, Washington, 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 is December, with an average of 8h and 30min of daylight.On the first day of the month, sunrise is at 7:36 am and sunset at 4:18 pm. On the last day of December, sunrise is at 7:56 am and sunset at 4:26 pm PST.
Sunshine
The month with the least sunshine in Redmond 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. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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").
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).
Average daylight in December /
Average sunshine in December
Redmond, WA
- Average daylight in December: 8h and 30min
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 12min
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).
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).
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).
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).
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).
