January weather forecast
West Slope, OR

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Weather in January

January, like December, is another chilly winter month in West Slope, Oregon, with an average temperature ranging between max 46°F (7.8°C) and min 35.1°F (1.7°C).

Temperature

The transition into January shows a subtle variation to a still chilly 46°F (7.8°C) from December's 44.2°F (6.8°C) in the average high-temperature. January nights in West Slope, Oregon, experience a consistent temperature drop to an icy 35.1°F (1.7°C).

Humidity

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

Rainfall

In West Slope, in January, it is raining for 18.5 days, with typically 4.49" (114mm) of accumulated precipitation. In West Slope, during the entire year, the rain falls for 173.2 days and collects up to 30.55" (776mm) of precipitation.

Snowfall

January through March, November and December are months with snowfall. In West Slope, Oregon, in January, during 1.3 snowfall days, 0.63" (16mm) of snow is typically accumulated. In West Slope, 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 West Slope is 9h and 11min.
On the first day of January in West Slope, Oregon, 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 5:15 pm PST.

Sunshine

The average sunshine in January in West Slope is 4h.

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 value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for average individuals.
Note: In January, the maximum UV index of 2 translates into these guidelines:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
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Frequently asked questions

What is the average January temperature in West Slope?

In West Slope, 46°F (7.8°C) is the average high-temperature and 35.1°F (1.7°C) is the average low-temperature during January.

What is the average humidity in January in West Slope?

In January, the average relative humidity in West Slope, Oregon, is 83%.

How many days does it rain in January in West Slope?

In West Slope, Oregon, in January, during 18.5 rainfall days, 4.49" (114mm) of precipitation is typically accumulated.

How much does it snow in West Slope in January?

In West Slope, Oregon, during January, snow falls for 1.3 days and regularly aggregates up to 0.63" (16mm) of snow.

How many hours of daylight does West Slope have in January?

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

When is the sunrise / sunset in January in West Slope?

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, in West Slope, Oregon, sunrise is at 7:33 am and sunset at 5:15 pm PST.

How long on average sun shines in January in West Slope?

In West Slope, Oregon, the average sunshine duration in January is 4h.

When is the lowest UV index in West Slope?

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

What is the UV index reading in January in West Slope?

The average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a low health threat from 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
West Slope, OR

Average temperature in January - West Slope, 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
West Slope, OR

Average pressure in January - West Slope, 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
West Slope, OR

Average wind speed in January - West Slope, 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
West Slope, OR

Average humidity in January - West Slope, 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
West Slope, OR

Average rainfall in January - West Slope, 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
West Slope, OR

Average rainfall days in January - West Slope, 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
West Slope, OR

Average snowfall in January - West Slope, 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
West Slope, OR

Average snowfall days in January - West Slope, 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
West Slope, OR

Average daylight in January / Average sunshine in January - West Slope, 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
West Slope, OR

Average sunshine days in January - West Slope, 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
West Slope, OR

Average UV index in January - West Slope, 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
West Slope, OR

Average cloud cover in January - West Slope, 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
West Slope, OR

Average visibility in January - West Slope, 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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West Slope, Oregon, USA

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