January weather forecast
Longview, WA

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Weather in January

January ushers in the colder months in Longview, Washington, predominantly cloudy and somewhat damp with relatively high humidity. The temperatures tend to stay quite chilly, with high temperatures peaking at a mere 44.2°F (6.8°C) while lows can drop to 33.4°F (0.8°C). Winter storms are frequent, bringing with them a dose of precipitation to the region. January is a month of slightly lesser sunlight, however, it maintains an average cloud cover translating to fewer sunny days. January sees a high amount of rainfall with as much as 3.9" (99mm), making it one of the wetter months of the year.

Temperature

The average high-temperature in Longview during January registers at a chilly 44.2°F (6.8°C), maintaining a close resemblance to the previous month. Nighttime temperature in Longview dips to a mean of 33.4°F (0.8°C) during January.

Humidity

The months with the highest humidity are January, February, November and December, with an average relative humidity of 88%.

Rainfall

The month with the most rainfall in Longview 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.

Ocean temperature

In Longview, in January, the average water temperature is 46.8°F (8.2°C).
Note: Swimming in 46.8°F (8.2°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

The average length of the day in January in Longview, Washington, is 9h and 7min.
On the first day of January, sunrise is at 7:54 am and sunset at 4:36 pm. On the last day of the month, 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.

UV index

In Longview, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The daily high UV index of 2 during January translates into the following recommendations:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
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Frequently asked questions

How cold does it get in Longview in January?

In January, in Longview, the average high-temperature is 44.2°F (6.8°C), and the average low-temperature is 33.4°F (0.8°C).

What is the most humid month in Longview?

January, February, November and December, with an average relative humidity of 88%, are most humid months in Longview, Washington.

What is the average humidity in January in Longview?

In January, the average relative humidity in Longview is 88%.

What is the rainiest month in Longview?

The month with the most rainfall in Longview, Washington, is January, when the rain falls for 18.7 days and typically aggregates up to 3.9" (99mm) of precipitation.

How much does it rain in Longview in January?

In Longview, Washington, in January, it is raining for 18.7 days, with typically 3.9" (99mm) of accumulated precipitation.

What is the snowiest month in Longview?

The month with the most snowfall in Longview is January, when snow falls for 1.7 days and typically aggregates up to 1.26" (32mm) of snow.

How many days does it snow in January in Longview?

In Longview, Washington, during January, snow falls for 1.7 days and regularly aggregates up to 1.26" (32mm) of snow.

What is the water temperature in January in Longview?

In January, the average ocean temperature is 46.8°F (8.2°C). Swimming in 46.8°F (8.2°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

What is the average length of the day in January in Longview?

In Longview, the average day length in January is 9h and 7min.

When are sunrise and sunset in January in Longview?

In January, on the first day of the month, sunrise is at 7:54 am and sunset at 4:36 pm. On the last day of the month, in Longview, Washington, sunrise is at 7:35 am and sunset at 5:14 pm PST.

What are the months with the least sunshine in Longview?

The months with the least sunshine are January, February and December, with an average of 3.5h of sunshine.

How long on average sun shines in January in Longview?

In Longview, the average sunshine duration in January is 3.5h.

What is the UV index intensity in January in Longview?

In January, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low health threat from unprotected exposure to UV radiation.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
42.3°F 5.7°C
44.2°F 6.8°C
45.5°F 7.5°C
Average low temperature
32.7°F 0.4°C
33.4°F 0.8°C
33.3°F 0.7°C
Average pressure
30.09" 764mmHg
30.1" 765mmHg
30.07" 764mmHg
Average wind speed
4.7mph 7.6km/h
4.8mph 7.7km/h
4.5mph 7.2km/h
Average max. wind speed
5mph 8km/h
5.3mph 8.5km/h
4.9mph 7.9km/h
Average wind speed gusts
8.1mph 13km/h
8.5mph 13.7km/h
7.6mph 12.2km/h
Average humidity
88%
88%
88%
Average rainfall
3.58" 91mm
3.9" 99mm
2.8" 71mm
Average rainfall days
18.5
18.7
16.7
Average snowfall
0.24" 6mm
1.26" 32mm
1.22" 31mm
Average snowfall days
0.9
1.7
2.2
Average sea temperature
47.8°F 8.8°C
46.8°F 8.2°C
46.6°F 8.1°C
Average daylight
8h 4min
9h 1min
10h 2min
Average sunshine
3h 3min
3h 3min
3h 3min
Average sunshine days
10.2
10.6
9.1
Average UV index
2
2
2
Average cloud cover
64%
64%
65%
Average visibility
4mi 6.4km
4mi 6.4km
4mi 6.4km

Average temperature in January
Longview, WA

Average temperature in January - Longview, 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).

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Average pressure in January
Longview, WA

Average pressure in January - Longview, 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).

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Average wind speed in January
Longview, WA

Average wind speed in January - Longview, 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).

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Average humidity in January
Longview, WA

Average humidity in January - Longview, 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%).

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Average rainfall in January
Longview, WA

Average rainfall in January - Longview, 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").

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Average rainfall days in January
Longview, WA

Average rainfall days in January - Longview, 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).

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Average snowfall in January
Longview, WA

Average snowfall in January - Longview, 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").

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Average snowfall days in January
Longview, WA

Average snowfall days in January - Longview, 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).

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Average sea temperature in January
Longview, WA

Average sea temperature in January - Longview, WA
  • Average sea temperature in January: 46.8°F

The best month for swimming (with the highest average sea temperature) is September (53.8°F).
The coldest month (with the lowest average sea temperature) is February (46.6°F).

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Average daylight in January /
Average sunshine in January
Longview, WA

Average daylight in January / Average sunshine in January - Longview, 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).

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Average sunshine days in January
Longview, WA

Average sunshine days in January - Longview, 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).

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Average UV index in January
Longview, WA

Average UV index in January - Longview, 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).

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Average cloud cover in January
Longview, WA

Average cloud cover in January - Longview, 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).

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Average visibility in January
Longview, WA

Average visibility in January - Longview, 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).

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Longview, Washington, USA

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