January weather forecast
Aloha, OR

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Weather in January

January, the same as December, in Aloha, Oregon, is another chilly winter month, with an average temperature varying between 35.1°F (1.7°C) and 46°F (7.8°C).

Temperature

The start of January sees the average high-temperature at a still frosty 46°F (7.8°C), showing little difference from December's 44.2°F (6.8°C). Aloha records a consistent low-temperature of 35.1°F (1.7°C) during January nights.

Humidity

The average relative humidity in January in Aloha, Oregon, is 83%.

Rainfall

In January, the rain falls for 18.5 days. Throughout January, 4.49" (114mm) of precipitation is accumulated. Throughout the year, there are 173.2 rainfall days, and 30.55" (776mm) of precipitation is accumulated.

Snowfall

January through March, November and December are months with snowfall. In Aloha, Oregon, during January, snow falls for 1.3 days and regularly aggregates up to 0.63" (16mm) of snow. In Aloha, Oregon, during the entire year, snow falls for 6.1 days and aggregates up to 4.37" (111mm) of snow.

Daylight

In January, the average length of the day in Aloha, Oregon, is 9h and 11min.
On the first day of January in Aloha, sunrise is at 7:51 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 5:16 pm PST.

Sunshine

The average sunshine in January is 4h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Aloha. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: In January, the maximum UV index of 2 suggests these recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. It's recommended to limit sun exposure when its radiation is at its peak during midday. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
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Frequently asked questions

What are the temperatures in Aloha in January?

In January, the average high-temperature and low-temperature in Aloha, Oregon, are 46°F (7.8°C) and 35.1°F (1.7°C) respectively.

What is the average humidity in January in Aloha?

The average relative humidity in January in Aloha is 83%.

How many days does it rain in January in Aloha?

In January, in Aloha, Oregon, the rain falls for 18.5 days. Throughout January, 4.49" (114mm) of precipitation is accumulated.

How many days does it snow in January in Aloha?

In Aloha, Oregon, in January, during 1.3 snowfall days, 0.63" (16mm) of snow is typically accumulated.

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

The average day length in January in Aloha is 9h and 11min.

What time are sunrise and sunset in January in Aloha?

In January, on the first day of the month, sunrise is at 7:51 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 5:16 pm PST.

How long on average sun shines in January in Aloha?

The average sunshine duration in January is 4h.

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

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

What is the UV index reading in January in Aloha?

The average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to Sun's UV rays.
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
Aloha, OR

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

The warmest month (with the highest average high temperature) is August (81.7°F).
The month with the lowest average high temperature is December (44.2°F).

  • Average low temperature in January: 35.1°F

The month with the highest average low temperature is August (55.6°F).
The coldest month (with the lowest average low temperature) is December (34.7°F).

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Average pressure in January
Aloha, OR

Average pressure in January - Aloha, OR
  • Average pressure in January: 30.11"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).

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Average wind speed in January
Aloha, OR

Average wind speed in January - Aloha, OR
  • Average wind speed in January: 5.4mph

The windiest month (with the highest average wind speed) is January (5.4mph).
The calmest month (with the lowest average wind speed) is August (4mph).

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Average humidity in January
Aloha, OR

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

The months with the highest relative humidity are February and December (84%).
The month with the lowest relative humidity is August (63%).

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Average rainfall in January
Aloha, OR

Average rainfall in January - Aloha, OR
  • Average rainfall in January: 4.49"

The wettest month (with the highest rainfall) is December (4.61").
The driest month (with the least rainfall) is July (0.31").

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Average rainfall days in January
Aloha, OR

Average rainfall days in January - Aloha, OR
  • Average rainfall days in January: 18.5 days

The month with the highest number of rainy days is March (20.6 days).
The month with the least rainy days is August (4.6 days).

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Average snowfall in January
Aloha, OR

Average snowfall in January - Aloha, OR
  • Average snowfall in January: 0.63"

The month with the highest snowfall is February (1.61").
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
Aloha, OR

Average snowfall days in January - Aloha, 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
Aloha, OR

Average daylight in January / Average sunshine in January - Aloha, 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 0min

The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).

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Average sunshine days in January
Aloha, OR

Average sunshine days in January - Aloha, OR
  • Average sunshine days in January: 11 days

The month with the most sunshine days is July (24.9 days).
The month with the least sunshine days is March (8.6 days).

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Average UV index in January
Aloha, OR

Average UV index in January - Aloha, 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
Aloha, OR

Average cloud cover in January - Aloha, OR
  • Average cloud cover in January: 58

The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 23).

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Average visibility in January
Aloha, OR

Average visibility in January - Aloha, 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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Aloha, Oregon, USA

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