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
In January, Mount Vernon experiences a minor shift in meteorological conditions with average high-temperatures marked at a frosty 44.2°F (6.8°C), closely mirroring the climate in December. January nights witness a mild cool down to an average low of 37°F (2.8°C).Humidity
January and February, with an average relative humidity of 83%, are the most humid months in Mount Vernon.Rainfall
In Mount Vernon, in January, during 18.3 rainfall days, 4.13" (105mm) of precipitation is typically accumulated. Throughout the year, in Mount Vernon, there are 185.2 rainfall days, and 34.72" (882mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall in Mount Vernon. In January, in Mount Vernon, it is snowing for 2.2 days. Throughout January, 2.2" (56mm) of snow is accumulated. Throughout the year, in Mount Vernon, there are 9.9 snowfall days, and 7.91" (201mm) of snow is accumulated.Daylight
In January, the average length of the day is 8h and 52min.On the first day of the month, sunrise is at 8:00 am and sunset at 4:24 pm. On the last day of January, sunrise is at 7:39 am and sunset at 5:06 pm PST.
Sunshine
The average sunshine in January is 4h.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 value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 2 in January interprets into the following advice:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Frequently asked questions
Is January cold in Mount Vernon?
What are the most humid months in Mount Vernon?
What is the average humidity in January in Mount Vernon?
How many days does it rain in January in Mount Vernon?
How much does it snow in Mount Vernon in January?
How many hours of daylight does Mount Vernon have in January?
When is the sunrise / sunset in January in Mount Vernon?
How many hours of sunshine does Mount Vernon have in January?
When is the lowest UV index in Mount Vernon?
How high is the UV index in January in Mount Vernon?
Average temperature in January
Mount Vernon, WA
- Average high temperature in January: 44.2°F
The warmest months (with the highest average high temperature) are July and August (68.4°F).
The month with the lowest average high temperature is December (42.6°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 February (36.1°F).
Average pressure in January
Mount Vernon, 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
Mount Vernon, WA
- Average wind speed in January: 7mph
The windiest month (with the highest average wind speed) is November (7.5mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in January
Mount Vernon, WA
- Average humidity in January: 83%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is July (75%).
Average rainfall in January
Mount Vernon, WA
- Average rainfall in January: 4.13"
The wettest month (with the highest rainfall) is November (4.96").
The driest month (with the least rainfall) is July (0.63").
Average rainfall days in January
Mount Vernon, WA
- Average rainfall days in January: 18.3 days
The month with the highest number of rainy days is March (20.8 days).
The month with the least rainy days is August (7.2 days).
Average snowfall in January
Mount Vernon, WA
- Average snowfall in January: 2.2"
The month with the highest snowfall is February (3.54").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Mount Vernon, WA
- Average snowfall days in January: 2.2 days
The month with the highest number of snowfall days is February (3.6 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
Mount Vernon, 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 24min).
- Average sunshine in January: 4h and 0min
The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 54min).
Average sunshine days in January
Mount Vernon, WA
- Average sunshine days in January: 11 days
The month with the most sunshine days is August (22.3 days).
The month with the least sunshine days is November (8.1 days).
Average UV index in January
Mount Vernon, 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, November and December (UV index 2).
Average cloud cover in January
Mount Vernon, WA
- Average cloud cover in January: 58
The month with the most cloud cover is December (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in January
Mount Vernon, WA
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Mount Vernon, Washington, USA
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