January weather forecast
Troutdale, OR

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Weather in January

In Troutdale, Oregon, January sees the beginning of the year with chilly weather, characteristic of the winter season. Moisture in the air is high during this time of the year, reflecting on the frequent precipitations, leading to average rainfall reaching 5.47" (139mm) and 1.3 snowfall days. Notably, sunlight is hard to come by as most of the days are overcast, which contributes to the low temperature. The wind speed is not particularly high, but it adds to the overall cold sensation. Finally, while January might not be the ideal month for outdoor activities, it is definitely a month for winter enthusiasts.

Temperature

The arrival of January sees a recorded average high-temperature of a still frosty 45°F (7.2°C), showing little divergence from the previous month's conditions. In the month of January, Troutdale witnesses a consistent average low-temperature of 34.3°F (1.3°C).

Humidity

In Troutdale, the average relative humidity in January is 83%.

Rainfall

In Troutdale, Oregon, during January, the rain falls for 18.6 days and regularly aggregates up to 5.47" (139mm) of precipitation. Throughout the year, there are 171 rainfall days, and 37.2" (945mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through March, November and December. In Troutdale, Oregon, in January, snow falls for 1.3 days, with typically accumulated 0.94" (24mm) of snow. In Troutdale, Oregon, during the entire year, snow falls for 6.3 days and aggregates up to 4.37" (111mm) of snow.

Daylight

In Troutdale, the average length of the day in January is 9h and 11min.
On the first day of January, sunrise is at 7:49 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 5:14 pm PST.

Sunshine

The average sunshine in January is 4.2h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 2 in January interprets into the following advice:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Always opt for UVA and UVB-resistant sunglasses on radiant days. 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 temperature in January in Troutdale?

An average high-temperature, in January, in Troutdale, is 45°F (7.2°C) and the average low-temperature is 34.3°F (1.3°C).

What is the average humidity in January in Troutdale?

In January, the average relative humidity in Troutdale is 83%.

How much does it rain in Troutdale in January?

In Troutdale, in January, during 18.6 rainfall days, 5.47" (139mm) of precipitation is typically accumulated.

How many days does it snow in January in Troutdale?

In Troutdale, in January, snow falls for 1.3 days, with typically accumulated 0.94" (24mm) of snow.

How many hours of daylight does Troutdale have in January?

The average day length in January in Troutdale, Oregon, is 9h and 11min.

When is the sunrise / sunset in January in Troutdale?

In January, on the first day of the month, sunrise is at 7:49 am and sunset at 4:36 pm. On the last day of the month, in Troutdale, sunrise is at 7:31 am and sunset at 5:14 pm PST.

How many hours of sunshine does Troutdale have in January?

The average sunshine duration in January is 4.2h.

What are the months with the lowest UV index in Troutdale?

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

What is the UV index reading in January in Troutdale?

In Troutdale, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Troutdale, OR

Average temperature in January - Troutdale, OR
  • Average high temperature in January: 45°F

The warmest month (with the highest average high temperature) is August (79.7°F).
The month with the lowest average high temperature is December (43.3°F).

  • Average low temperature in January: 34.3°F

The month with the highest average low temperature is August (52.7°F).
The coldest month (with the lowest average low temperature) is December (33.3°F).

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Average pressure in January
Troutdale, OR

Average pressure in January - Troutdale, OR
  • Average pressure in January: 30.12"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).

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Average wind speed in January
Troutdale, OR

Average wind speed in January - Troutdale, OR
  • Average wind speed in January: 6.8mph

The windiest month (with the highest average wind speed) is January (6.8mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).

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Average humidity in January
Troutdale, OR

Average humidity in January - Troutdale, OR
  • Average humidity in January: 83%

The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is August (65%).

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Average rainfall in January
Troutdale, OR

Average rainfall in January - Troutdale, OR
  • Average rainfall in January: 5.47"

The wettest month (with the highest rainfall) is December (5.63").
The driest month (with the least rainfall) is July (0.31").

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Average rainfall days in January
Troutdale, OR

Average rainfall days in January - Troutdale, OR
  • Average rainfall days in January: 18.6 days

The month with the highest number of rainy days is March (19.6 days).
The month with the least rainy days is August (4.1 days).

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Average snowfall in January
Troutdale, OR

Average snowfall in January - Troutdale, OR
  • Average snowfall in January: 0.94"

The month with the highest snowfall is February (1.54").
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
Troutdale, OR

Average snowfall days in January - Troutdale, OR
  • Average snowfall days in January: 1.3 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 daylight in January /
Average sunshine in January
Troutdale, OR

Average daylight in January / Average sunshine in January - Troutdale, OR
  • Average daylight in January: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in January: 4h and 1min

The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).

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Average sunshine days in January
Troutdale, OR

Average sunshine days in January - Troutdale, OR
  • Average sunshine days in January: 10.8 days

The month with the most sunshine days is August (25.3 days).
The month with the least sunshine days is February (8.6 days).

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Average UV index in January
Troutdale, OR

Average UV index in January - Troutdale, OR
  • Average UV index in January: 2

The month with the highest UV index is July (UV index 6).
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
Troutdale, OR

Average cloud cover in January - Troutdale, OR
  • Average cloud cover in January: 56

The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 24).

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Average visibility in January
Troutdale, OR

Average visibility in January - Troutdale, OR
  • Average visibility in January: 5mi

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

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Troutdale, Oregon, USA

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