January weather forecastManson, WA
January
Weather in January
January, like December, is another subzero cold winter month in Manson, Washington, with an average temperature fluctuating between 30.9°F (-0.6°C) and 19°F (-7.2°C).Temperature
With the onset of January, the average high-temperature registers at a still subzero cold 30.9°F (-0.6°C), subtly different from December's 30.2°F (-1°C). Manson throughout January, records an average low-temperature of 19°F (-7.2°C).Humidity
The most humid month is January, with an average relative humidity of 90%.Rainfall
In Manson, Washington, in January, during 8.6 rainfall days, 1.5" (38mm) of precipitation is typically accumulated. Throughout the year, there are 99.9 rainfall days, and 10.47" (266mm) of precipitation is accumulated.Snowfall
January through April, September through December are months with snowfall in Manson, Washington. In Manson, in January, during 12 snowfall days, 7.87" (200mm) of snow is typically accumulated. In Manson, during the entire year, snow falls for 48.7 days and aggregates up to 28.62" (727mm) of snow.Daylight
In Manson, the average length of the day in January is 8h and 55min.On the first day of January in Manson, sunrise is at 7:49 am and sunset at 4:18 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 4:58 pm PST.
Sunshine
The month with the least sunshine in Manson is January, with an average of 4.1h of sunshine.UV index
January through March, 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 minimal health hazard from exposure to the Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 2 in January translates into the following instructions:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Manson, WA
- Average high temperature in January: 30.9°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is December (30.2°F).
- Average low temperature in January: 19°F
The month with the highest average low temperature is August (55.8°F).
The coldest months (with the lowest average low temperature) are January and December (19°F).
Average pressure in January
Manson, WA
- Average pressure in January: 30.16"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).
Average wind speed in January
Manson, WA
- Average wind speed in January: 3.5mph
The windiest month (with the highest average wind speed) is June (6.1mph).
The calmest months (with the lowest average wind speed) are January and December (3.5mph).
Average humidity in January
Manson, WA
- Average humidity in January: 90%
The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are July and August (43%).
Average rainfall in January
Manson, WA
- Average rainfall in January: 1.5"
The wettest month (with the highest rainfall) is December (1.65").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in January
Manson, WA
- Average rainfall days in January: 8.6 days
The month with the highest number of rainy days is March (12.8 days).
The month with the least rainy days is August (3.8 days).
Average snowfall in January
Manson, WA
- Average snowfall in January: 7.87"
The month with the highest snowfall is December (9.06").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days in January
Manson, WA
- Average snowfall days in January: 12 days
The month with the highest number of snowfall days is January (12 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Manson, 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: 4h and 6min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in January
Manson, WA
- Average sunshine days in January: 14.4 days
The month with the most sunshine days is July (25.7 days).
The month with the least sunshine days is March (13.2 days).
Average UV index in January
Manson, WA
- Average UV index in January: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in January
Manson, WA
- Average cloud cover in January: 54
The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in January
Manson, WA
- Average visibility in January: 4mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).





