January weather forecast and climate
Salem, OR

An evening shot of the leafy town of Salem in Oregon, with a clear dusk sky
An evening shot of the leafy town of Salem in Oregon, with a clear dusk sky
January, the same as December, in Salem, Oregon, is another chilly winter month, with average temperature fluctuating between 35.2°F (1.8°C) and 47.7°F (8.7°C).

Temperature

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

Humidity

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

Rainfall

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

Snowfall

Months with snowfall are January through March, November and December. In January, in Salem, Oregon, 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 Salem, the average length of the day in January is 9.3h.

Sunshine

In January, the average sunshine in Salem is 4.3h.

UV index

Months with the lowest UV index in Salem are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from the exposure to the Sun's UV radiation for ordinary individuals.
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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in January in Salem?

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

What is the most humid month in Salem?

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

What is the average humidity in January in Salem?

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

How much does it rain in Salem in January?

In January, the rain falls for 17.1 days. Throughout January, 3.66" (93mm) of precipitation is accumulated.

How many days does it snow in January in Salem?

In January, in Salem, it is snowing for 0.9 days. Throughout January, 0.43" (11mm) of snow is accumulated.

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

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

How many hours of sunshine does Salem have in January?

In Salem, Oregon, the average sunshine in January is 4.3h.

What are the months with 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 January, the average daily maximum UV index in Salem, Oregon, is 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to the UV radiation.
Average temperature in January - Salem, OR
  • Average high temperature in January: 8.7°C

The warmest month (with the highest average high temperature) is August (27.8°C).
The month with the lowest average high temperature is December (7.5°C).

  • Average low temperature in January: 1.8°C

The month with the highest average low temperature is August (12.3°C).
The coldest month (with the lowest average low temperature) is December (1.4°C).

Average pressure in January - Salem, OR
  • Average pressure in January: 1019.7mbar

The month with the highest atmospheric pressure is January (1019.7mbar).
The month with the lowest atmospheric pressure is August (1016.2mbar).

Average wind speed in January - Salem, OR
  • Average wind speed in January: 8.8km/h

The windiest month (with the highest average wind speed) is March (8.9km/h).
The calmest month (with the lowest average wind speed) is August (6.8km/h).

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%).

Average rainfall in January - Salem, OR
  • Average rainfall in January: 93mm

The wettest month (with the highest rainfall) is December (100mm).
The driest month (with the least rainfall) is July (7mm).

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: 11mm

The month with the highest snowfall is February (30mm).
Months with the least snowfall are April, May, June, July, August, September and October (0mm).

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).

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).

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).
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: 8km

Months with the highest visibility are July, August and September (9km).
Months with the lowest visibility are January, February, March, April, May, June, October, November and December (8km).