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
The start of January sees the average high-temperature at a chilly 44.2°F (6.8°C), showing little difference from December's 42.3°F (5.7°C). During January, the temperature tends to dip to an average of 33.4°F (0.8°C) at night.Humidity
January, February, November and December, with an average relative humidity of 88%, are the most humid months.Rainfall
The month with the most rainfall is January, when the rain falls for 18.7 days and typically aggregates up to 3.9" (99mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. The month with the most snowfall is January, when snow falls for 1.7 days and typically aggregates up to 1.26" (32mm) of snow.Daylight
The average length of the day in January in Longview Heights is 9h and 7min.On the first day of the month, sunrise is at 7:54 am and sunset at 4:36 pm. On the last day of January, sunrise is at 7:35 am and sunset at 5:14 pm PST.
Sunshine
January, February and December, with an average of 3.5h of sunshine, are months with the least sunshine in Longview Heights.UV index
The average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: In January, the maximum UV index of 2 suggests this advice:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. To guard against the harmful effects of the Sun, minimize exposure during midday. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is January in Longview Heights?
What are the most humid months in Longview Heights?
What is the average humidity in January in Longview Heights?
What is the rainiest month in Longview Heights?
How many days does it rain in January in Longview Heights?
When does it snow the most in Longview Heights?
How much does it snow in Longview Heights in January?
How many hours of daylight does Longview Heights have in January?
When are sunrise and sunset in January in Longview Heights?
What are the months with the least sunshine in Longview Heights?
How long on average sun shines in January in Longview Heights?
What is the UV index intensity in January in Longview Heights?
Average temperature in January
Longview Heights, WA
- Average high temperature in January: 44.2°F
The warmest month (with the highest average high temperature) is August (77.9°F).
The month with the lowest average high temperature is December (42.3°F).
- Average low temperature in January: 33.4°F
The month with the highest average low temperature is August (49.8°F).
The coldest month (with the lowest average low temperature) is December (32.7°F).
Average pressure in January
Longview Heights, WA
- Average pressure in January: 30.1"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in January
Longview Heights, WA
- Average wind speed in January: 4.8mph
The windiest month (with the highest average wind speed) is January (4.8mph).
The calmest month (with the lowest average wind speed) is September (3.9mph).
Average humidity in January
Longview Heights, WA
- Average humidity in January: 88%
The months with the highest relative humidity are January, February, November and December (88%).
The month with the lowest relative humidity is July (72%).
Average rainfall in January
Longview Heights, WA
- Average rainfall in January: 3.9"
The wettest month (with the highest rainfall) is January (3.9").
The driest month (with the least rainfall) is August (0.39").
Average rainfall days in January
Longview Heights, WA
- Average rainfall days in January: 18.7 days
The month with the highest number of rainy days is March (20.3 days).
The month with the least rainy days is July (6.1 days).
Average snowfall in January
Longview Heights, WA
- Average snowfall in January: 1.26"
The month with the highest snowfall is January (1.26").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Longview Heights, WA
- Average snowfall days in January: 1.7 days
The month with the highest number of snowfall days is February (2.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Longview Heights, 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: 3h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The months with the least sunshine are January, February and December (Average sunshine: 3h and 30min).
Average sunshine days in January
Longview Heights, WA
- Average sunshine days in January: 10.6 days
The month with the most sunshine days is July (22 days).
The month with the least sunshine days is March (8.9 days).
Average UV index in January
Longview Heights, WA
- Average UV index in January: 2
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in January
Longview Heights, WA
- Average cloud cover in January: 64
The months with the most cloud cover are February and March (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in January
Longview Heights, WA
- Average visibility in January: 4mi
The month with the highest visibility is August (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, September, October, November and December (4mi).
Longview Heights, Washington, USA
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