January weather forecast and climate
Salem, OR

An evening shot of the leafy town of Salem in Oregon
An evening shot of the leafy town of Salem in Oregon

Weather in January

January, the same as December, in Salem, Oregon, is a frosty winter month, with average temperature ranging between min 35.2°F (1.8°C) and max 47.7°F (8.7°C).

Temperature

In January, the average high-temperature is relatively the same as in December - a still frosty 47.7°F (8.7°C). In January, the average low-temperature is 35.2°F (1.8°C).

Humidity

Months with the highest humidity in Salem are January, February and December, with an average relative humidity of 86%.

Rainfall

In January, in Salem, the rain falls for 17.1 days. Throughout January, 3.66" (93mm) of precipitation is accumulated. In Salem, during the entire year, the rain falls for 162.5 days and collects up to 25.08" (637mm) of precipitation.

Snowfall

January through March, November and December are months with snowfall. In January, it is snowing for 0.9 days. Throughout January, 0.43" (11mm) of snow is accumulated. In Salem, during the entire year, snow falls for 4.7 days, and aggregates up to 2.48" (63mm) of snow.

Daylight

In January, the average length of the day in Salem is 9.3h.

Sunshine

The average sunshine in January is 4.3h.

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 value of 2, and less, symbolizes a low health risk from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 2 transform into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in January in Salem?

The average high-temperature, in January, in Salem, Oregon, is 47.7°F (8.7°C), while the average low-temperature is 35.2°F (1.8°C).

What are the most humid months in Salem?

January, February and December, with an average relative humidity of 86%, are most humid months in Salem, Oregon.

What is the average humidity in January in Salem?

In Salem, Oregon, the average relative humidity in January is 86%.

How many days does it rain in January in Salem?

In Salem, Oregon, in January, it is raining for 17.1 days, with typically 3.66" (93mm) of accumulated precipitation.

How much does it snow in Salem in January?

In Salem, Oregon, in January, snow falls for 0.9 days, with typically accumulated 0.43" (11mm) of snow.

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

The average length of the day in January in Salem is 9.3h.

How long on average sun shines in January in Salem?

The average sunshine in January in Salem, Oregon, is 4.3h.

When is the lowest UV index in Salem?

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

What is the UV index reading in January in Salem?

In Salem, Oregon, the average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unprotected exposure to the UV radiation.

Average temperature in January
Salem, OR

Average temperature in January - Salem, OR
  • Average high temperature in January: 47.7°F

The warmest month (with the highest average high temperature) is August (82°F).
The month with the lowest average high temperature is December (45.5°F).

  • Average low temperature in January: 35.2°F

The month with the highest average low temperature is August (54.1°F).
The coldest month (with the lowest average low temperature) is December (34.5°F).

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Average pressure in January
Salem, OR

Average pressure in January - Salem, OR
  • Average pressure in January: 30.11"

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

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Average wind speed in January
Salem, OR

Average wind speed in January - Salem, OR
  • Average wind speed in January: 5.5mph

The windiest months (with the highest average wind speed) are January, March and November (5.5mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

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Average humidity in January
Salem, OR

Average humidity in January - Salem, OR
  • Average humidity in January: 86%

Months with the highest relative humidity are January, February and December (86%).
The month with the lowest relative humidity is August (65%).

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Average rainfall in January
Salem, OR

Average rainfall in January - Salem, OR
  • Average rainfall in January: 3.66"

The wettest month (with the highest rainfall) is December (3.94").
The driest month (with the least rainfall) is July (0.28").

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Average rainfall days in January
Salem, OR

Average rainfall days in January - Salem, OR
  • Average rainfall days in January: 17.1 days

The month with the highest number of rainy days is March (19.6 days).
The month with the least rainy days is July (3.9 days).

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Average snowfall in January
Salem, OR

Average snowfall in January - Salem, OR
  • Average snowfall in January: 0.43"

The month with the highest snowfall is February (1.18").
Months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in January
Salem, OR

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

The month with the highest number of snowfall days is February (1.8 days).
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
Salem, OR

Average daylight in January / Average sunshine in January - Salem, OR
  • Average daylight in January: 9.3h

The month with the longest days is June (Average daylight: 15.6h).
The month with the shortest days is December (Average daylight: 8.8h).

  • Average sunshine in January: 4.3h

The month with the most sunshine is August (Average sunshine: 11h).
The month with the least sunshine is February (Average sunshine: 4.2h).

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Average sunshine days in January
Salem, OR

Average sunshine days in January - Salem, OR
  • Average sunshine days in January: 12.4 days

The month with the most sunshine days is July (26.3 days).
The month with the least sunshine days is March (8.8 days).

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Average UV index in January
Salem, OR

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

The month with the highest UV index is July (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in January
Salem, OR

Average cloud cover in January - Salem, OR
  • Average cloud cover in January: 57

The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 21).

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Average visibility in January
Salem, OR

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

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

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