January weather forecastPreston, WA
January
Weather in January
January, the same as December, is a wintry winter month in Preston, Washington, with an average temperature fluctuating between 30.9°F (-0.6°C) and 41.5°F (5.3°C).Temperature
Shifting into January, Preston records an average high-temperature of a still icy 41.5°F (5.3°C), presenting minor fluctuations compared to the previous month. Preston sees an average low-temperature of 30.9°F (-0.6°C) during January.Humidity
The months with the highest humidity are January and February, with an average relative humidity of 87%.Rainfall
January is the month with the most rainfall. Rain falls for 18.4 days and accumulates 6.1" (155mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Preston, during January, snow falls for 2.7 days and regularly aggregates up to 2.99" (76mm) of snow. In Preston, during the entire year, snow falls for 17.4 days and aggregates up to 11.38" (289mm) of snow.Daylight
The average length of the day in January is 8h and 58min.On the first day of the month, sunrise is at 7:55 am and sunset at 4:26 pm. On the last day of January, sunrise is at 7:35 am and sunset at 5:06 pm PST.
Sunshine
The months with the least sunshine are January and December, with an average of 3.9h of sunshine.UV index
In Preston, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: An average maximum UV index of 2 in January leads to these recommendations:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. When the Sun is at its strongest around midday, find shade and limit exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Preston, WA
- Average high temperature in January: 41.5°F
The warmest month (with the highest average high temperature) is August (74.8°F).
The month with the lowest average high temperature is December (39.7°F).
- Average low temperature in January: 30.9°F
The month with the highest average low temperature is August (48.7°F).
The coldest month (with the lowest average low temperature) is December (29.8°F).
Average pressure in January
Preston, 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
Preston, WA
- Average wind speed in January: 5.1mph
The windiest month (with the highest average wind speed) is January (5.1mph).
The calmest month (with the lowest average wind speed) is August (3.3mph).
Average humidity in January
Preston, WA
- Average humidity in January: 87%
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is July (71%).
Average rainfall in January
Preston, WA
- Average rainfall in January: 6.1"
The wettest month (with the highest rainfall) is January (6.1").
The driest months (with the least rainfall) are July and August (0.59").
Average rainfall days in January
Preston, WA
- Average rainfall days in January: 18.4 days
The month with the highest number of rainy days is March (20.5 days).
The month with the least rainy days is August (6.4 days).
Average snowfall in January
Preston, WA
- Average snowfall in January: 2.99"
The month with the highest snowfall is February (3.94").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Preston, WA
- Average snowfall days in January: 2.7 days
The month with the highest number of snowfall days is February (5.4 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
Preston, 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: 3h and 54min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are January and December (Average sunshine: 3h and 54min).
Average sunshine days in January
Preston, WA
- Average sunshine days in January: 10.5 days
The month with the most sunshine days is August (21.9 days).
The month with the least sunshine days is February (7.8 days).
Average UV index in January
Preston, WA
- Average UV index in January: 2
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in January
Preston, WA
- Average cloud cover in January: 59
The months with the most cloud cover are January, February, March and December (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in January
Preston, 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).
