Astoria
Oregon, USA
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
Astoria, OR

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
January, the same as December, in Astoria, Oregon, is a frosty winter month, with temperature in the range of an average low of 37.8°F (3.2°C) and an average high of 49.8°F (9.9°C).

Temperature

In Astoria, the average high-temperature in January is practically the same as in December - a still frosty 49.8°F (9.9°C). In Astoria, in January, the average low-temperature is 37.8°F (3.2°C).

Rainfall

In Astoria, in January, during 21.4 rainfall days, 10.2" (259.1mm) of precipitation is typically accumulated. In Astoria, during the entire year, the rain falls for 191.1 days and collects up to 67.2" (1708.1mm) of precipitation.

Snowfall

Months with snowfall in Astoria are January, February, November and December. The month with the most snowfall is January when snow falls for 0.4 days and typically aggregates up to 0.5" (12.7mm) of snow.

Ocean temperature

In Astoria, Oregon, in January, the average water temperature is 48.4°F (9.1°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

Daylight

In January, the average length of the day is 9.1h.

Sunshine

In January, the average sunshine is 3h.

UV index

Months with the lowest UV index in Astoria are January, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from the exposure to the Sun's UV rays for the average person.
In January, the average maximum UV index of 1 translate into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in January in Astoria?

The average high-temperature, in January, in Astoria, is 49.8°F (9.9°C), while the average low-temperature is 37.8°F (3.2°C).

How many days does it rain in January in Astoria?

In Astoria, Oregon, in January, it is raining for 21.4 days, with typically 10.2" (259.1mm) of accumulated precipitation.

How much does it snow in Astoria in January?

In Astoria, Oregon, in January, during 0.4 snowfall days, 0.5" (12.7mm) of snow is typically accumulated.

When does it snow the most in Astoria?

The month with the most snowfall is January when snow falls for 0.4 days and typically aggregates up to 0.5" (12.7mm) of snow.

What is the ocean temperature in January in Astoria?

In Astoria, Oregon, the average seawater temperature in January is 48.4°F (9.1°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

How many hours of daylight does Astoria have in January?

In Astoria, the average length of the day in January is 9.1h.

How many hours of sunshine does Astoria have in January?

In Astoria, the average sunshine in January is 3h.

When is the lowest UV index in Astoria?

Months with the lowest UV index in Astoria, Oregon, are January, November and December, with an average maximum UV index of 1.

What is the UV index reading in January in Astoria?

In Astoria, Oregon, the average daily maximum UV index in January is 1. A UV Index estimate of 2, and below, represents a low health threat from the exposure to the Sun's UV radiation.
Average temperature in January - Astoria, OR
  • Average high temperature in January: 49.8°F

The warmest month (with the highest average high temperature) is August (68.7°F).
The month with the lowest average high temperature is December (48.7°F).

  • Average low temperature in January: 37.7°F

Months with the highest average low temperature are July and August (53.1°F).
The coldest month (with the lowest average low temperature) is December (36.6°F).

Average rainfall in January - Astoria, OR
  • Average rainfall in January: 10.2"

The wettest month (with the highest rainfall) is November (11.2").
The driest month (with the lowest rainfall) is July (1").

Average rainfall days in January - Astoria, OR
  • Average rainfall days in January: 21.4 days

Months with the highest number of rainy days are January and November (21.4 days).
The month with the lowest number of rainy days is August (7.4 days).

Average snowfall in January - Astoria, OR
  • Average snowfall in January: 0.5"

The month with the highest snowfall is January (0.5").
Months with the lowest snowfall are March, April, May, June, July, August, September and October (0").

Average snowfall days in January - Astoria, OR
  • Average snowfall days in January: 0.4 days

Months with the highest number of snowfall days are January and February (0.4 days).
Months with the lowest number of snowfall days are March, April, May, June, July, August, September and October (0 days).

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).

Average daylight in January / Average sunshine in January - Astoria, OR
  • Average daylight in January: 9.1h

The month with the longest days is June (Average daylight: 15.7h).
The month with shortest days is December (Average daylight: 8.7h).

  • Average sunshine in January: 3h

The month with most sunshine is July (Average sunshine: 9h).
Months with least sunshine are November and December (Average sunshine: 2).

Average UV index in January - Astoria, OR
  • Average UV index in January: 1

The month with the highest UV index is July (UV index 8).
Months with the lowest UV index are January, November and December (UV index 1).