January weather forecastSultan, WA
January
Weather in January
January, the same as December, is another cold winter month in Sultan, Washington, with an average temperature ranging between min 29.7°F (-1.3°C) and max 39.9°F (4.4°C).Temperature
December's transformation into January witnesses an average high-temperature of a still icy 39.9°F (4.4°C), noting a minor change from the preceding month. In Sultan, the average temperature during the nights of January drops to a freezing cold 29.7°F (-1.3°C).Humidity
The months with the highest humidity are January through March, with an average relative humidity of 88%.Rainfall
January is the month with the most rainfall. Rain falls for 19.5 days and accumulates 7.8" (198mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Sultan, during January, snow falls for 2.4 days and regularly aggregates up to 3.94" (100mm) of snow. Throughout the year, there are 15.9 snowfall days, and 14.41" (366mm) of snow is accumulated.Daylight
In January, the average length of the day is 8h and 56min.On the first day of January, sunrise is at 7:56 am and sunset at 4:25 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 5:05 pm PST.
Sunshine
January and December, with an average of 3.7h of sunshine, are months with the least sunshine.UV index
January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The daily high UV index of 2 during January translates into the following recommendations:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Consider this! The reflection from snow can almost 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 January
Sultan, WA
- Average high temperature in January: 39.9°F
The warmest month (with the highest average high temperature) is August (73.4°F).
The month with the lowest average high temperature is December (38.3°F).
- Average low temperature in January: 29.7°F
The month with the highest average low temperature is August (48°F).
The coldest month (with the lowest average low temperature) is December (28.6°F).
Average pressure in January
Sultan, WA
- Average pressure in January: 30.11"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is August (29.99"Hg).
Average wind speed in January
Sultan, WA
- Average wind speed in January: 4.8mph
The windiest month (with the highest average wind speed) is January (4.8mph).
The calmest month (with the lowest average wind speed) is August (3.2mph).
Average humidity in January
Sultan, WA
- Average humidity in January: 88%
The months with the highest relative humidity are January, February and March (88%).
The month with the lowest relative humidity is July (72%).
Average rainfall in January
Sultan, WA
- Average rainfall in January: 7.8"
The wettest month (with the highest rainfall) is January (7.8").
The driest month (with the least rainfall) is August (0.79").
Average rainfall days in January
Sultan, WA
- Average rainfall days in January: 19.5 days
The month with the highest number of rainy days is March (22.3 days).
The month with the least rainy days is August (7.9 days).
Average snowfall in January
Sultan, WA
- Average snowfall in January: 3.94"
The month with the highest snowfall is February (5.43").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Sultan, WA
- Average snowfall days in January: 2.4 days
The month with the highest number of snowfall days is February (5.2 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
Sultan, WA
- Average daylight in January: 8h and 54min
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 January: 3h and 42min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The months with the least sunshine are January and December (Average sunshine: 3h and 42min).
Average sunshine days in January
Sultan, WA
- Average sunshine days in January: 9.7 days
The month with the most sunshine days is August (19.9 days).
The month with the least sunshine days is March (7 days).
Average UV index in January
Sultan, WA
- Average UV index in January: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in January
Sultan, WA
- Average cloud cover in January: 60
The months with the most cloud cover are March and December (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in January
Sultan, WA
- Average visibility in January: 4mi
The months with the highest visibility are May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, November and December (4mi).
