Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
The arrival of January brings an average high-temperature of a still icy 39.9°F (4.4°C), nearly identical to December's 38.3°F (3.5°C). During January, the temperature tends to dip to an average of 29.7°F (-1.3°C) at night.Humidity
January through March, with an average relative humidity of 88%, are the most humid months.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 in Sultan 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. In Sultan, during the entire year, snow falls for 15.9 days and aggregates up to 14.41" (366mm) of snow.Daylight
In January, the average length of the day is 8h and 56min.On the first day of January in Sultan, 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 in Sultan, Washington.UV index
January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Sultan, Washington. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for average individuals.Note: A typical high UV index of 2 in January suggests the following recommendations:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Frequently asked questions
How cold is January in Sultan?
What is the most humid month in Sultan?
What is the average humidity in January in Sultan?
What is the rainiest month in Sultan?
How many days does it rain in January in Sultan?
How many days does it snow in January in Sultan?
What is the average length of the day in January in Sultan?
When is the sunrise / sunset in January in Sultan?
What are the months with the least sunshine in Sultan?
How long on average sun shines in January in Sultan?
When is the lowest UV index in Sultan?
How high is the UV index in January in Sultan?
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 5min
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 4min
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).
Sultan, Washington, USA
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