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
Adna observes a minor difference in average high-temperatures between December's 42.6°F (5.9°C) and January's 44.6°F (7°C). The nighttime temperature dips to a cold 33.8°F (1°C) on average during January.Humidity
January, February, November and December, with an average relative humidity of 89%, are the most humid months.Rainfall
The month with the most rainfall is January, when the rain falls for 18.6 days and typically aggregates up to 5.51" (140mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In Adna, Washington, during January, snow falls for 1.8 days and regularly aggregates up to 1.85" (47mm) of snow. Throughout the year, in Adna, there are 9 snowfall days, and 5.59" (142mm) of snow is accumulated.Daylight
In January, the average length of the day is 9h and 4min.On the first day of the month, sunrise is at 7:56 am and sunset at 4:35 pm. On the last day of January, sunrise is at 7:37 am and sunset at 5:13 pm PST.
Sunshine
In Adna, the average sunshine in January is 3.6h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Adna. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 2 during January leads to these instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in January?
What is the most humid month?
What is the average humidity in January?
What is the wettest month?
How many days does it rain in January?
How many days does it snow in January?
What is the average length of the day in January?
When is the sunrise / sunset in January?
How long on average sun shines in January in Adna?
What is the month with the lowest UV index?
What is the UV index intensity in January?
Average temperature in January
Adna, WA
- Average high temperature in January: 44.6°F
The warmest month (with the highest average high temperature) is August (77.5°F).
The month with the lowest average high temperature is December (42.6°F).
- Average low temperature in January: 33.8°F
The month with the highest average low temperature is August (50°F).
The coldest month (with the lowest average low temperature) is December (33.1°F).
Average pressure in January
Adna, 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 (30.02"Hg).
Average wind speed in January
Adna, WA
- Average wind speed in January: 4.5mph
The windiest months (with the highest average wind speed) are January, March and November (4.5mph).
The calmest month (with the lowest average wind speed) is September (3.6mph).
Average humidity in January
Adna, WA
- Average humidity in January: 89%
The months with the highest relative humidity are January, February, November and December (89%).
The month with the lowest relative humidity is July (73%).
Average rainfall in January
Adna, WA
- Average rainfall in January: 5.51"
The wettest month (with the highest rainfall) is January (5.51").
The driest month (with the least rainfall) is July (0.47").
Average rainfall days in January
Adna, WA
- Average rainfall days in January: 18.6 days
The month with the highest number of rainy days is March (21.5 days).
The month with the least rainy days is August (6.4 days).
Average snowfall in January
Adna, WA
- Average snowfall in January: 1.85"
The month with the highest snowfall is February (1.93").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Adna, WA
- Average snowfall days in January: 1.8 days
The month with the highest number of snowfall days is February (3.5 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
Adna, WA
- Average daylight in January: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in January: 3h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).
Average sunshine days in January
Adna, WA
- Average sunshine days in January: 9.6 days
The months with the most sunshine days are July and August (20.8 days).
The month with the least sunshine days is February (7.6 days).
Average UV index in January
Adna, 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
Adna, WA
- Average cloud cover in January: 65
The months with the most cloud cover are January, February and December (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in January
Adna, WA
- Average visibility in January: 4mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
Adna, Washington, USA
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