January weather forecast
Astoria, OR

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A scenic seaside shot of the city of Astoria in Oregon, with a view of the iconic Astoria Megler bridge crossing over the Columbia river
A scenic seaside shot of the city of Astoria in Oregon, with a view of the iconic Astoria Megler bridge crossing over the Columbia river

Weather in January

January presents a chilly kickoff to the year, with weather patterns characterized by consistent rainfall and overcast conditions. This trend carries over from December, making the distinction between these two months rather subtle in Astoria, Oregon. January temperature ranges from a low of 39.2°F (4°C) to a high of 46°F (7.8°C). The city experiences the most substantial snowfall in January, although it is still relatively mild at 0.75" (19mm) compared to many parts of the country. Looking forward, the temperatures are expected to increase slightly in February, though the overall weather patterns remain quite similar.

Temperature

Astoria measures an average high-temperature of a still frosty 46°F (7.8°C) in January, nearly consistent with the preceding month. The nights of January in Astoria anticipate a slight dip from daytime high temperatures, settling to an average low-temperature of 39.2°F (4°C).

Humidity

The months with the highest humidity in Astoria are January through March, November and December, with an average relative humidity of 84%.

Rainfall

In Astoria, during January, the rain falls for 20.1 days and regularly aggregates up to 6.22" (158mm) of precipitation. In Astoria, during the entire year, the rain falls for 192.7 days and collects up to 40.12" (1019mm) of precipitation.

Snowfall

January through March and December are months with snowfall. In Astoria, Oregon, during January, snow falls for 0.9 days and regularly aggregates up to 0.75" (19mm) of snow. In Astoria, Oregon, during the entire year, snow falls for 3.4 days and aggregates up to 1.93" (49mm) of snow.

Ocean temperature

In January, the average ocean temperature is 48.4°F (9.1°C).
Note: It is advised against swimming in 48.4°F (9.1°C) when it drops below 50°F (10°C). Such temperatures can cause extreme cold shock, leading to hyperventilation.

Daylight

The average length of the day in January is 9h and 7min.
On the first day of January, sunrise is at 7:57 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 5:18 pm PST.

Sunshine

January and February, with an average of 3.8h 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 of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: In January, the UV index of 2 transforms into the following advice:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. To cut down UV radiation exposure by about half, sport a wide-brim hat. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
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Frequently asked questions

What is the average January temperature in Astoria?

Astoria in January has an average high-temperature of 46°F (7.8°C) and an average low-temperature of 39.2°F (4°C).

What are the most humid months in Astoria?

January through March, November and December, with an average relative humidity of 84%, are most humid months in Astoria.

What is the average humidity in January in Astoria?

The average relative humidity in January in Astoria is 84%.

How many days does it rain in January in Astoria?

In Astoria, Oregon, in January, it is raining for 20.1 days, with typically 6.22" (158mm) of accumulated precipitation.

How much does it snow in Astoria in January?

In January, it is snowing for 0.9 days. Throughout January, 0.75" (19mm) of snow is accumulated.

What is the water temperature in January in Astoria?

In January, the average ocean temperature in Astoria is 48.4°F (9.1°C). Swimming in 48.4°F (9.1°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.

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

The average day length in January in Astoria is 9h and 7min.

When is the sunrise / sunset in January in Astoria?

On the first day of January in Astoria, Oregon, sunrise is at 7:57 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 5:18 pm PST.

What is the month with the least sunshine in Astoria?

The months with the least sunshine in Astoria, Oregon, are January and February, with an average of 3.8h of sunshine.

How long on average sun shines in January in Astoria?

In Astoria, the average sunshine duration in January is 3.8h.

When is the lowest UV index in Astoria?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Astoria, Oregon.

What is the UV index reading in January in Astoria?

The average daily maximum UV index in January in Astoria is 2. A UV Index of 2, and less, symbolizes a low health threat from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
45.1°F 7.3°C
46°F 7.8°C
46.8°F 8.2°C
Average low temperature
38.5°F 3.6°C
39.2°F 4°C
38.8°F 3.8°C
Average pressure
30.06" 764mmHg
30.08" 764mmHg
30.06" 764mmHg
Average wind speed
8.8mph 14.2km/h
9.1mph 14.6km/h
8.2mph 13.2km/h
Average max. wind speed
9.4mph 15.1km/h
9.9mph 15.9km/h
8.8mph 14.2km/h
Average wind speed gusts
14.7mph 23.7km/h
15.5mph 24.9km/h
13.4mph 21.6km/h
Average humidity
84%
84%
84%
Average rainfall
6.42" 163mm
6.22" 158mm
4.45" 113mm
Average rainfall days
21.2
20.1
19.1
Average snowfall
0.04" 1mm
0.75" 19mm
0.91" 23mm
Average snowfall days
0.3
0.9
1.4
Average sea temperature
49.6°F 9.8°C
48.5°F 9.2°C
47.7°F 8.7°C
Average daylight
8h 4min
9h 1min
10h 2min
Average sunshine
4h 1min
3h 5min
3h 5min
Average sunshine days
9.2
9.8
7.5
Average UV index
2
2
2
Average cloud cover
58%
60%
60%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in January
Astoria, OR

Average temperature in January - Astoria, OR
  • Average high temperature in January: 46°F

The warmest month (with the highest average high temperature) is August (67.6°F).
The month with the lowest average high temperature is December (45.1°F).

  • Average low temperature in January: 39.2°F

The month with the highest average low temperature is August (53.1°F).
The coldest month (with the lowest average low temperature) is December (38.5°F).

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Average pressure in January
Astoria, OR

Average pressure in January - Astoria, OR
  • 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 and September (30.02"Hg).

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Average wind speed in January
Astoria, OR

Average wind speed in January - Astoria, OR
  • Average wind speed in January: 9.1mph

The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in January
Astoria, OR

Average humidity in January - Astoria, OR
  • Average humidity in January: 84%

The months with the highest relative humidity are January, February, March, November and December (84%).
The month with the lowest relative humidity is May (81%).

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Average rainfall in January
Astoria, OR

Average rainfall in January - Astoria, OR
  • Average rainfall in January: 6.22"

The wettest month (with the highest rainfall) is December (6.42").
The driest month (with the least rainfall) is July (0.51").

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Average rainfall days in January
Astoria, OR

Average rainfall days in January - Astoria, OR
  • Average rainfall days in January: 20.1 days

The month with the highest number of rainy days is December (21.2 days).
The month with the least rainy days is August (7.2 days).

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Average snowfall in January
Astoria, OR

Average snowfall in January - Astoria, OR
  • Average snowfall in January: 0.75"

The month with the highest snowfall is February (0.91").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days in January
Astoria, OR

Average snowfall days in January - Astoria, OR
  • Average snowfall days in January: 0.9 days

The month with the highest number of snowfall days is February (1.4 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
Astoria, OR

Average sea temperature in January - Astoria, OR
  • Average sea temperature in January: 48.5°F

The best month for swimming (with the highest average sea temperature) is July (56.9°F).
The coldest month (with the lowest average sea temperature) is February (47.7°F).

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Average daylight in January /
Average sunshine in January
Astoria, OR

Average daylight in January / Average sunshine in January - Astoria, OR
  • 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 5min

The month with the most sunshine is August (Average sunshine: 9h and 54min).
The months with the least sunshine are January and February (Average sunshine: 3h and 48min).

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Average sunshine days in January
Astoria, OR

Average sunshine days in January - Astoria, OR
  • Average sunshine days in January: 9.8 days

The month with the most sunshine days is August (20.1 days).
The month with the least sunshine days is February (7.5 days).

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Average UV index in January
Astoria, OR

Average UV index in January - Astoria, OR
  • 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).

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Average cloud cover in January
Astoria, OR

Average cloud cover in January - Astoria, OR
  • Average cloud cover in January: 60

The months with the most cloud cover are January and February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 36).

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Average visibility in January
Astoria, OR

Average visibility in January - Astoria, OR
  • Average visibility in January: 6mi

The months with the highest visibility are January, February, March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are July, August and September (5mi).

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Astoria, Oregon, USA

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