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
During January, Valley records an average high-temperature of a still freezing cold 31.1°F (-0.5°C), marking a slight divergence from December's 29.8°F (-1.2°C). Valley's average low-temperature in January is measured at a still freezing cold 19°F (-7.2°C).Humidity
With an average relative humidity of 94%, January is the most humid month in Valley.Rainfall
January is the month with the most rainfall. Rain falls for 12 days and accumulates 2.2" (56mm) of precipitation.Snowfall
January through April, September through December are months with snowfall in Valley. January is the month with the most snowfall in Valley. Snow falls for 13.3 days and accumulates 10.47" (266mm) of snow.Daylight
The average length of the day in January is 8h and 53min.On the first day of the month, sunrise is at 7:41 am and sunset at 4:07 pm. On the last day of January, in Valley, sunrise is at 7:20 am and sunset at 4:48 pm PST.
Sunshine
January has the least sunshine of the year in Valley, with an average of 3.6h of sunshine.UV index
The months with the lowest UV index in Valley are January, February, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the ordinary person.Note: An average UV index of 1 in January transforms into this advice:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. To avoid the Sun's strongest rays, limit exposure around the mid-day period. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is January in Valley?
What is the most humid month in Valley?
What is the average humidity in January in Valley?
What is the wettest month in Valley?
How many days does it rain in January in Valley?
When does it snow the most in Valley?
How many days does it snow in January in Valley?
How many hours of daylight does Valley have in January?
When are sunrise and sunset in January in Valley?
What is the month with the least sunshine in Valley?
How long on average sun shines in January in Valley?
When is the lowest UV index in Valley?
How high is the UV index in January in Valley?
Average temperature in January
Valley, WA
- Average high temperature in January: 31.1°F
The warmest month (with the highest average high temperature) is August (83.1°F).
The month with the lowest average high temperature is December (29.8°F).
- Average low temperature in January: 19°F
The month with the highest average low temperature is August (51.8°F).
The coldest month (with the lowest average low temperature) is December (18.7°F).
Average pressure in January
Valley, WA
- Average pressure in January: 30.19"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).
Average wind speed in January
Valley, WA
- Average wind speed in January: 3.5mph
The windiest month (with the highest average wind speed) is April (4.7mph).
The calmest months (with the lowest average wind speed) are January and December (3.5mph).
Average humidity in January
Valley, WA
- Average humidity in January: 94%
The month with the highest relative humidity is January (94%).
The month with the lowest relative humidity is August (47%).
Average rainfall in January
Valley, WA
- Average rainfall in January: 2.2"
The wettest month (with the highest rainfall) is January (2.2").
The driest month (with the least rainfall) is August (0.35").
Average rainfall days in January
Valley, WA
- Average rainfall days in January: 12 days
The month with the highest number of rainy days is March (17.1 days).
The month with the least rainy days is August (5.6 days).
Average snowfall in January
Valley, WA
- Average snowfall in January: 10.47"
The month with the highest snowfall is January (10.47").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days in January
Valley, WA
- Average snowfall days in January: 13.3 days
The month with the highest number of snowfall days is December (15.4 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Valley, 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: 3h and 4min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in January
Valley, WA
- Average sunshine days in January: 11.1 days
The month with the most sunshine days is August (22.9 days).
The month with the least sunshine days is March (9.3 days).
Average UV index in January
Valley, WA
- Average UV index in January: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in January
Valley, WA
- Average cloud cover in January: 63
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in January
Valley, WA
- Average visibility in January: 3mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January and February (3mi).
Valley, Washington, USA
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