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 sea temperature 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
The beginning of January reveals an average high-temperature of a chilly 44.1°F (6.7°C), showing minimal deviation from the previous month. A consistent average low of 35.8°F (2.1°C) is noted throughout January, only a small step down from its daytime high.Humidity
The months with the highest humidity are January and December, with an average relative humidity of 85%.Rainfall
In Langley, during January, the rain falls for 18.2 days and regularly aggregates up to 3.94" (100mm) of precipitation. In Langley, during the entire year, the rain falls for 179.1 days and collects up to 29.57" (751mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In January, it is snowing for 1.9 days. Throughout January, 1.34" (34mm) of snow is accumulated. Throughout the year, there are 8.9 snowfall days, and 6.1" (155mm) of snow is accumulated.Ocean temperature
January through April, with an average ocean temperature of 45.1°F (7.3°C), are months with the coldest seawater.Note: Danger awaits those who swim in 45.1°F (7.3°C) without protection. Falling below 50°F (10°C) means intense cold shock and hyperventilation.
Daylight
In January, the average length of the day is 8h and 55min.On the first day of the month, sunrise is at 7:59 am and sunset at 4:26 pm. On the last day of January, sunrise is at 7:38 am and sunset at 5:07 pm PST.
Sunshine
January and December, with an average of 4.2h of sunshine, are months with the least 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 unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 2 in January interprets into the following recommendations:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is January in Langley?
What is the most humid month?
What is the average humidity in January?
How much does it rain in January?
How much does it snow in January?
What months are the ocean coldest?
What is the ocean temperature in January?
How many hours of daylight does Langley have in January?
When are sunrise and sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Langley have in January?
What is the month with the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Langley, WA
- Average high temperature in January: 44.1°F
The warmest month (with the highest average high temperature) is August (73°F).
The month with the lowest average high temperature is December (42.3°F).
- Average low temperature in January: 35.8°F
The month with the highest average low temperature is August (52.5°F).
The coldest month (with the lowest average low temperature) is December (34.7°F).
Average pressure in January
Langley, WA
- Average pressure in January: 30.09"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in January
Langley, WA
- Average wind speed in January: 5.7mph
The windiest months (with the highest average wind speed) are March and November (5.8mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).
Average humidity in January
Langley, WA
- Average humidity in January: 85%
The months with the highest relative humidity are January and December (85%).
The month with the lowest relative humidity is July (73%).
Average rainfall in January
Langley, WA
- Average rainfall in January: 3.94"
The wettest month (with the highest rainfall) is November (4.06").
The driest month (with the least rainfall) is July (0.47").
Average rainfall days in January
Langley, WA
- Average rainfall days in January: 18.2 days
The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (6.1 days).
Average snowfall in January
Langley, WA
- Average snowfall in January: 1.34"
The month with the highest snowfall is February (2.68").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Langley, 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 sea temperature in January
Langley, WA
- Average sea temperature in January: 45.2°F
The best month for swimming (with the highest average sea temperature) is August (53.3°F).
The coldest months (with the lowest average sea temperature) are February and March (45.1°F).
Average daylight in January /
Average sunshine in January
Langley, 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 1min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are January and December (Average sunshine: 4h and 12min).
Average sunshine days in January
Langley, WA
- Average sunshine days in January: 10.8 days
The month with the most sunshine days is August (23.1 days).
The months with the least sunshine days are February and November (8.6 days).
Average UV index in January
Langley, WA
- Average UV index in January: 2
The months with the highest UV index are June and 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
Langley, WA
- Average cloud cover in January: 56
The month with the most cloud cover is December (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in January
Langley, WA
- Average visibility in January: 5mi
The months with the highest visibility are March, April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, November and December (5mi).
Langley, Washington, USA
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