January weather forecastMountlake Terrace, WA
January
Weather in January
January, the same as December, in Mountlake Terrace, Washington, is a frosty winter month, with temperature in the range of an average low of 37°F (2.8°C) and an average high of 45.1°F (7.3°C).Temperature
With the start of January, Mountlake Terrace measures an average high-temperature of a still frosty 45.1°F (7.3°C), not significantly differing from December's 43.3°F (6.3°C). Mountlake Terrace, in January, registers a nighttime average temperature of 37°F (2.8°C).Humidity
January, February and December, with an average relative humidity of 84%, are the most humid months.Rainfall
In Mountlake Terrace, in January, it is raining for 17.4 days, with typically 3.31" (84mm) of accumulated precipitation. In Mountlake Terrace, Washington, during the entire year, the rain falls for 173 days and collects up to 25" (635mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In January, in Mountlake Terrace, it is snowing for 2.3 days. Throughout January, 1.18" (30mm) of snow is accumulated. In Mountlake Terrace, during the entire year, snow falls for 12.5 days and aggregates up to 6.65" (169mm) of snow.Daylight
The average length of the day in January in Mountlake Terrace, Washington, is 8h and 56min.On the first day of January, sunrise is at 7:58 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 5:07 pm PST.
Sunshine
With an average of 4.5h of sunshine, January has the least sunshine of the year.UV index
The months with the lowest UV index in Mountlake Terrace, Washington, are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index, 2 during January, leads to the following recommendations:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Opt for tightly woven and loose clothing to enhance protection from the Sun. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Mountlake Terrace, WA
- Average high temperature in January: 45.1°F
The warmest month (with the highest average high temperature) is August (73.9°F).
The month with the lowest average high temperature is December (43.3°F).
- Average low temperature in January: 37°F
The month with the highest average low temperature is August (54.1°F).
The coldest month (with the lowest average low temperature) is December (35.8°F).
Average pressure in January
Mountlake Terrace, WA
- Average pressure in January: 30.09"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).
Average wind speed in January
Mountlake Terrace, WA
- Average wind speed in January: 5.8mph
The windiest month (with the highest average wind speed) is November (5.9mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).
Average humidity in January
Mountlake Terrace, WA
- Average humidity in January: 84%
The months with the highest relative humidity are January, February and December (84%).
The month with the lowest relative humidity is July (72%).
Average rainfall in January
Mountlake Terrace, WA
- Average rainfall in January: 3.31"
The wettest month (with the highest rainfall) is December (3.5").
The driest month (with the least rainfall) is July (0.39").
Average rainfall days in January
Mountlake Terrace, WA
- Average rainfall days in January: 17.4 days
The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (6.8 days).
Average snowfall in January
Mountlake Terrace, WA
- Average snowfall in January: 1.18"
The month with the highest snowfall is February (3.58").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Mountlake Terrace, WA
- Average snowfall days in January: 2.3 days
The month with the highest number of snowfall days is February (4.7 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
Mountlake Terrace, WA
- Average daylight in January: 8h and 54min
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 30min
The month with the most sunshine is August (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in January
Mountlake Terrace, WA
- Average sunshine days in January: 10.5 days
The month with the most sunshine days is August (22.5 days).
The month with the least sunshine days is November (9.2 days).
Average UV index in January
Mountlake Terrace, WA
- Average UV index in January: 2
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Mountlake Terrace, WA
- Average cloud cover in January: 53
The months with the most cloud cover are January and December (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in January
Mountlake Terrace, WA
- Average visibility in January: 5mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
