January weather forecastTukwila, WA
January
Weather in January
January, like December, is a frosty winter month in Tukwila, Washington, with an average temperature ranging between max 44.6°F (7°C) and min 35.2°F (1.8°C).Temperature
The average high-temperature for January is a still chilly 44.6°F (7°C), closely aligning with the temperature of the preceding month. In January, Tukwila reports a consistent average low-temperature of 35.2°F (1.8°C) during the nights.Humidity
January and December, with an average relative humidity of 85%, are the most humid months in Tukwila.Rainfall
In Tukwila, in January, during 12.3 rainfall days, 1.54" (39mm) of precipitation is typically accumulated. Throughout the year, there are 138.2 rainfall days, and 14.09" (358mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. In Tukwila, Washington, in January, during 1.9 snowfall days, 0.83" (21mm) of snow is typically accumulated. Throughout the year, in Tukwila, there are 9.8 snowfall days, and 4.72" (120mm) of snow is accumulated.Daylight
The average length of the day in January in Tukwila is 8h and 58min.On the first day of January in Tukwila, sunrise is at 7:56 am and sunset at 4:28 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 5:08 pm PST.
Sunshine
The average sunshine in January in Tukwila, Washington, is 4.2h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Tukwila. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.Note: The UV index of 2 in January translates into these instructions:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Tukwila, WA
- Average high temperature in January: 44.6°F
The warmest month (with the highest average high temperature) is August (77.7°F).
The month with the lowest average high temperature is December (43.5°F).
- Average low temperature in January: 35.2°F
The month with the highest average low temperature is August (53.6°F).
The coldest month (with the lowest average low temperature) is December (34.3°F).
Average pressure in January
Tukwila, WA
- Average pressure in January: 30.1"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).
Average wind speed in January
Tukwila, WA
- Average wind speed in January: 5.2mph
The windiest month (with the highest average wind speed) is March (5.3mph).
The calmest months (with the lowest average wind speed) are July and August (3.6mph).
Average humidity in January
Tukwila, WA
- Average humidity in January: 85%
The months with the highest relative humidity are January and December (85%).
The month with the lowest relative humidity is July (68%).
Average rainfall in January
Tukwila, WA
- Average rainfall in January: 1.54"
The wettest month (with the highest rainfall) is December (2.2").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in January
Tukwila, WA
- Average rainfall days in January: 12.3 days
The month with the highest number of rainy days is April (14.9 days).
The month with the least rainy days is August (5.7 days).
Average snowfall in January
Tukwila, WA
- Average snowfall in January: 0.83"
The month with the highest snowfall is February (2.52").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Tukwila, WA
- Average snowfall days in January: 1.9 days
The month with the highest number of snowfall days is February (3.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Tukwila, WA
- Average daylight in January: 9h and 0min
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 January: 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 6min).
Average sunshine days in January
Tukwila, WA
- Average sunshine days in January: 15.6 days
The month with the most sunshine days is August (22.8 days).
The month with the least sunshine days is February (13 days).
Average UV index in January
Tukwila, WA
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Tukwila, WA
- Average cloud cover in January: 57
The month with the most cloud cover is December (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in January
Tukwila, WA
- Average visibility in January: 5mi
The months with the highest visibility are May, June, July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, October, November and December (5mi).
