January weather - Winter 2025

Weather in January
Frequently asked questions
Average temperature in January
Average pressure in January
Average wind speed in January
Average humidity in January
Average rainfall in January
Average rainfall days in January
Average snowfall in January
Average snowfall days in January
Average daylight in January
Average sunshine in January
Average sunshine days in January
Average UV index in January
Average cloud cover in January
Average visibility in January

An evening shot of the leafy town of Salem in Oregon

Weather in January

Typical weather for Salem, Oregon in January is characterized by moderate winters with a high average temperature of 47.7°F (8.7°C) and a low of 35.2°F (1.8°C). Compared to the following month, January features higher rainfall at 3.66" (93mm). This is also the time when the city experiences the first snowfall of the year, although it is relatively light. The town becomes a winter wonderland with snowfall around 0.43" (11mm), but there is plenty of sunshine with an average of 4.3 hours per day.

Temperature

The advent of January signifies a minor shift to an average high-temperature of a still chilly 47.7°F (8.7°C), aligning closely with December. During January, the temperature tends to dip to an average of 35.2°F (1.8°C) at night.

Humidity

The months with the highest humidity are January, February and December, with an average relative humidity of 86%.

Rainfall

In Salem, in January, during 17.1 rainfall days, 3.66" (93mm) of precipitation is typically accumulated. Throughout the year, there are 162.5 rainfall days, and 25.08" (637mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Salem, the average length of the day in January is 9h and 15min.
On the first day of the month, sunrise is at 7:50 am and sunset at 4:41 pm. On the last day of January, sunrise is at 7:32 am and sunset at 5:18 pm PST.

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 of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for average individuals.
Note: A daily high UV index of 2 in January leads to these guidelines:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.

Updated: Jun 4, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average January temperature?

During January, Salem experiences an average high-temperature of 47.7°F (8.7°C) and a low-temperature of 35.2°F (1.8°C).

What is the most humid month?

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

What is the average humidity in January?

The average relative humidity in January is 86%.

How many days does it rain in January?

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

How much does it snow 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?

The average day length in January is 9h and 15min.

What time are sunrise and sunset in January in Salem?

In January, on the first day of the month, sunrise is at 7:50 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 5:18 pm PST.

How many hours of sunshine does Salem have in January?

In January, the average sunshine duration is 4.3h.

What are the months with the lowest UV index?

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

What is the UV index intensity in January?

In Salem, the average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a low health threat from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year January F M A M J J A S O N D

Dec

January

Feb

Average high temperature

45.5°F 7.5°C

47.7°F 8.7°C

48.7°F 9.3°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

5.8mph 9.3km/h

6mph 9.7km/h

5.9mph 9.5km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

10.6

12.4

9.3

Average UV index

Average cloud cover

Average visibility

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).

Average pressure in January
Salem, 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).

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).

Average humidity in January
Salem, OR

Average humidity in January: 86%

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

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").

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).

Average snowfall in January
Salem, OR

Average snowfall in January: 0.43"

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

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).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in January /
Average sunshine in January
Salem, 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 2min

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 12min).

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).

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).
The months with the lowest UV index are January, February, November and December (UV index 2).

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).

Average visibility in January
Salem, 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).

January weather forecast
Salem, OR

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