January weather forecast
Seneca, OR

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Weather in January

January, the same as December, is another cold winter month in Seneca, Oregon, with an average temperature varying between 35.2°F (1.8°C) and 22.1°F (-5.5°C).

Temperature

January's weather records an average high-temperature of a still icy 35.2°F (1.8°C), showing little deviation from December. The average temperature during January nights in Seneca is registered at a subzero cold 22.1°F (-5.5°C).

Humidity

In January, the average relative humidity is 84%.

Rainfall

In Seneca, in January, it is raining for 12.3 days, with typically 2.17" (55mm) of accumulated precipitation. In Seneca, during the entire year, the rain falls for 127.7 days and collects up to 17.09" (434mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall. In January, it is snowing for 11.7 days. Throughout January, 8.11" (206mm) of snow is accumulated. Throughout the year, there are 62.5 snowfall days, and 39.17" (995mm) of snow is accumulated.

Daylight

In Seneca, the average length of the day in January is 9h and 20min.
On the first day of January, sunrise is at 7:30 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 5:03 pm PST.

Sunshine

The months with the least sunshine are January and February, with an average of 5.2h of sunshine.

UV index

The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: In January, the maximum UV index of 2 transforms into these recommendations:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Enhance your sun protection with tightly woven, yet airy clothing. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.

Frequently asked questions

How cold is January?

An average high-temperature, in January, in Seneca, is 35.2°F (1.8°C) and the average low-temperature is 22.1°F (-5.5°C).

What is the average humidity in January?

The average relative humidity in January is 84%.

How much does it rain in January?

In January, the rain falls for 12.3 days. Throughout January, 2.17" (55mm) of precipitation is accumulated.

How many days does it snow in January?

In Seneca, in January, snow falls for 11.7 days, with typically accumulated 8.11" (206mm) of snow.

How many hours of daylight does Seneca have in January?

In Seneca, the average day length in January is 9h and 20min.

When are sunrise and sunset in January in Seneca?

On the first day of January, sunrise is at 7:30 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 5:03 pm PST.

What is the month with the least sunshine?

January and February, with an average of 5.2h of sunshine, are months with the least sunshine.

How long on average sun shines in January?

The average sunshine duration in January is 5.2h.

What is the month with the lowest UV index?

The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2.

What is the UV index reading in January?

The average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to UV radiation.
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
Seneca, OR

Average temperature in January - Seneca, OR
  • Average high temperature in January: 35.2°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is December (33.4°F).

  • Average low temperature in January: 22.1°F

The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is December (19.6°F).

Average pressure in January
Seneca, OR

Average pressure in January - Seneca, OR
  • Average pressure in January: 30.22"Hg

The month with the highest atmospheric pressure is January (30.22"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).

Average wind speed in January
Seneca, OR

Average wind speed in January - Seneca, OR
  • Average wind speed in January: 6mph

The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest months (with the lowest average wind speed) are August and September (5mph).

Average humidity in January
Seneca, OR

Average humidity in January - Seneca, OR
  • Average humidity in January: 84%

The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is August (42%).

Average rainfall in January
Seneca, OR

Average rainfall in January - Seneca, OR
  • Average rainfall in January: 2.17"

The wettest month (with the highest rainfall) is February (2.28").
The driest month (with the least rainfall) is July (0.24").

Average rainfall days in January
Seneca, OR

Average rainfall days in January - Seneca, OR
  • Average rainfall days in January: 12.3 days

The month with the highest number of rainy days is March (17.3 days).
The month with the least rainy days is August (3.3 days).

Average snowfall in January
Seneca, OR

Average snowfall in January - Seneca, OR
  • Average snowfall in January: 8.11"

The month with the highest snowfall is February (10.31").
The months with the least snowfall are June, July and August (0").

Average snowfall days in January
Seneca, OR

Average snowfall days in January - Seneca, OR
  • Average snowfall days in January: 11.7 days

The month with the highest number of snowfall days is December (14.5 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in January /
Average sunshine in January
Seneca, OR

Average daylight in January / Average sunshine in January - Seneca, OR
  • Average daylight in January: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in January: 5h and 1min

The month with the most sunshine is August (Average sunshine: 12h and 6min).
The months with the least sunshine are January and February (Average sunshine: 5h and 12min).

Average sunshine days in January
Seneca, OR

Average sunshine days in January - Seneca, OR
  • Average sunshine days in January: 13.5 days

The month with the most sunshine days is July (24.9 days).
The month with the least sunshine days is February (9 days).

Average UV index in January
Seneca, OR

Average UV index in January - Seneca, 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, March, October, November and December (UV index 2).

Average cloud cover in January
Seneca, OR

Average cloud cover in January - Seneca, OR
  • Average cloud cover in January: 47

The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 9).

Average visibility in January
Seneca, OR

Average visibility in January - Seneca, OR
  • Average visibility in January: 4mi

The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).

Seneca, Oregon, USA

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