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
January's climate shows a minor adjustment in average high-temperatures to a still frosty 45.1°F (7.3°C) from December's 43.5°F (6.4°C). Greenbank's nocturnal readings in January exhibit minimal variation from the daytime temperatures, averaging at a wintry 38.7°F (3.7°C).Humidity
With an average relative humidity of 82%, January is the most humid month.Rainfall
In January, the rain falls for 18.7 days. Throughout January, 2.64" (67mm) of precipitation is accumulated. Throughout the year, in Greenbank, Washington, there are 183.3 rainfall days, and 23.03" (585mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In Greenbank, Washington, during January, snow falls for 1.9 days and regularly aggregates up to 1.14" (29mm) of snow. Throughout the year, there are 9.1 snowfall days, and 5.63" (143mm) of snow is accumulated.Daylight
In January, the average length of the day is 8h and 54min.On the first day of January, sunrise is at 8:00 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 5:07 pm PST.
Sunshine
The month with the least sunshine is January, with an average of 4.6h of sunshine.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In January, a daily UV index of 2 turns into the following recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are January temperatures?
What is the most humid month in Greenbank?
What is the average humidity in January?
How many days does it rain in January?
How much does it snow in January?
What is the average length of the day in January?
When is the sunrise / sunset in January in Greenbank?
What is the month with the least sunshine?
How long on average sun shines in January?
When is the lowest UV index?
How high is the UV index in January?
Average temperature in January
Greenbank, WA
- Average high temperature in January: 45.1°F
The warmest month (with the highest average high temperature) is August (67.3°F).
The month with the lowest average high temperature is December (43.5°F).
- Average low temperature in January: 38.7°F
The month with the highest average low temperature is August (55.9°F).
The coldest month (with the lowest average low temperature) is December (37.9°F).
Average pressure in January
Greenbank, WA
- Average pressure in January: 30.08"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).
Average wind speed in January
Greenbank, WA
- Average wind speed in January: 7.8mph
The windiest month (with the highest average wind speed) is November (8mph).
The calmest month (with the lowest average wind speed) is August (4mph).
Average humidity in January
Greenbank, WA
- Average humidity in January: 82%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is July (76%).
Average rainfall in January
Greenbank, WA
- Average rainfall in January: 2.64"
The wettest month (with the highest rainfall) is November (3.19").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in January
Greenbank, WA
- Average rainfall days in January: 18.7 days
The month with the highest number of rainy days is March (20.7 days).
The month with the least rainy days is August (6.9 days).
Average snowfall in January
Greenbank, WA
- Average snowfall in January: 1.14"
The month with the highest snowfall is February (3.07").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Greenbank, WA
- Average snowfall days in January: 1.9 days
The month with the highest number of snowfall days is February (3.1 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
Greenbank, 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: 4h and 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in January
Greenbank, WA
- Average sunshine days in January: 10.5 days
The month with the most sunshine days is August (23 days).
The month with the least sunshine days is February (8 days).
Average UV index in January
Greenbank, 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
Greenbank, WA
- Average cloud cover in January: 51
The months with the most cloud cover are January, February and December (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in January
Greenbank, WA
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Greenbank, Washington, USA
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