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
As January takes its course, Roosevelt's average high-temperature registers at a still wintry 37.9°F (3.3°C), closely aligning with the preceding month. An average low-temperature of 27.5°F (-2.5°C) is noted during the month of January.Humidity
With an average relative humidity of 83%, January is the most humid month.Rainfall
January is the month with the most rainfall. Rain falls for 11.3 days and accumulates 1.1" (28mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In Roosevelt, in January, snow falls for 4 days, with typically accumulated 2.52" (64mm) of snow. In Roosevelt, during the entire year, snow falls for 15.8 days and aggregates up to 9.69" (246mm) of snow.Daylight
In January, the average length of the day is 9h and 10min.On the first day of January, sunrise is at 7:41 am and sunset at 4:26 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 5:04 pm PST.
Sunshine
The month with the least sunshine is January, with an average of 5.2h of sunshine.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 estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the average person.Note: A daily high UV index of 2 in January leads to these guidelines:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is January?
What is the most humid month?
What is the average humidity in January?
What is the rainiest month?
How many days does it rain in January in Roosevelt?
How much does it snow in January?
What is the average length of the day in January?
When is the sunrise / sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Roosevelt have in January?
What are the months with the lowest UV index?
What is the UV index intensity in January?
Average temperature in January
Roosevelt, WA
- Average high temperature in January: 37.9°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is December (36.5°F).
- Average low temperature in January: 27.5°F
The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is December (26.6°F).
Average pressure in January
Roosevelt, WA
- Average pressure in January: 30.17"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).
Average wind speed in January
Roosevelt, WA
- Average wind speed in January: 6.3mph
The windiest month (with the highest average wind speed) is June (9.2mph).
The calmest month (with the lowest average wind speed) is January (6.3mph).
Average humidity in January
Roosevelt, WA
- Average humidity in January: 83%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are July and August (40%).
Average rainfall in January
Roosevelt, WA
- Average rainfall in January: 1.1"
The wettest month (with the highest rainfall) is January (1.1").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in January
Roosevelt, WA
- Average rainfall days in January: 11.3 days
The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is July (4.4 days).
Average snowfall in January
Roosevelt, WA
- Average snowfall in January: 2.52"
The month with the highest snowfall is February (3.86").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Roosevelt, WA
- Average snowfall days in January: 4 days
The month with the highest number of snowfall days is December (4.8 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight in January /
Average sunshine in January
Roosevelt, WA
- Average daylight in January: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in January: 5h and 1min
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: 5h and 12min).
Average sunshine days in January
Roosevelt, WA
- Average sunshine days in January: 15.1 days
The month with the most sunshine days is July (25 days).
The month with the least sunshine days is February (14 days).
Average UV index in January
Roosevelt, WA
- Average UV index in January: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Roosevelt, WA
- Average cloud cover in January: 48
The month with the most cloud cover is January (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in January
Roosevelt, WA
- Average visibility in January: 5mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Roosevelt, Washington, USA
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