January weather forecast
Irrigon, OR

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Weather in January

January, like December, in Irrigon, Oregon, is an icy winter month, with an average temperature varying between 29.7°F (-1.3°C) and 39.9°F (4.4°C).

Temperature

Irrigon experiences a minor change to a still icy 39.9°F (4.4°C) in average high-temperature during January, closely reflecting December. In Irrigon, January is marked by an average low-temperature of 29.7°F (-1.3°C).

Humidity

January is the most humid month in Irrigon, Oregon, with an average relative humidity of 79%.

Rainfall

In Irrigon, in January, during 11.3 rainfall days, 0.98" (25mm) of precipitation is typically accumulated. Throughout the year, there are 106.1 rainfall days, and 7.76" (197mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through March, September, November and December. In Irrigon, Oregon, in January, snow falls for 2.3 days, with typically accumulated 1.06" (27mm) of snow. Throughout the year, in Irrigon, there are 10.3 snowfall days, and 6.02" (153mm) of snow is accumulated.

Daylight

In Irrigon, the average length of the day in January is 9h and 9min.
On the first day of the month, sunrise is at 7:39 am and sunset at 4:23 pm. On the last day of January, in Irrigon, Oregon, sunrise is at 7:21 am and sunset at 5:01 pm PST.

Sunshine

January and December, with an average of 5.4h of sunshine, are months with the least sunshine in Irrigon.

UV index

The months with the lowest UV index in Irrigon 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 vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 2 during January leads to these advisories:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Experience reduced UV exposure by about half when donning a wide-brim hat. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
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Frequently asked questions

How cold is January in Irrigon?

The high-temperature, in January, in Irrigon, records 39.9°F (4.4°C), while the low-temperature is 29.7°F (-1.3°C).

What is the most humid month in Irrigon?

The most humid month in Irrigon is January, with an average relative humidity of 79%.

What is the average humidity in January in Irrigon?

In Irrigon, Oregon, the average relative humidity in January is 79%.

How much does it rain in Irrigon in January?

In Irrigon, Oregon, during January, the rain falls for 11.3 days and regularly aggregates up to 0.98" (25mm) of precipitation.

How many days does it snow in January in Irrigon?

In Irrigon, during January, snow falls for 2.3 days and regularly aggregates up to 1.06" (27mm) of snow.

How many hours of daylight does Irrigon have in January?

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

When are sunrise and sunset in January in Irrigon?

In January, on the first day of the month, sunrise is at 7:39 am and sunset at 4:23 pm. On the last day of the month, in Irrigon, Oregon, sunrise is at 7:21 am and sunset at 5:01 pm PST.

What is the month with the least sunshine in Irrigon?

The months with the least sunshine are January and December, with an average of 5.4h of sunshine.

How long on average sun shines in January in Irrigon?

In Irrigon, Oregon, the average sunshine duration in January is 5.4h.

What are the months with the lowest UV index in Irrigon?

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

How high is the UV index in January in Irrigon?

In January, the average daily maximum UV index in Irrigon, Oregon, is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from unsafe 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
Irrigon, OR

Average temperature in January - Irrigon, OR
  • Average high temperature in January: 39.9°F

The warmest month (with the highest average high temperature) is July (89.1°F).
The month with the lowest average high temperature is December (38.7°F).

  • Average low temperature in January: 29.7°F

The month with the highest average low temperature is August (64.2°F).
The coldest month (with the lowest average low temperature) is December (28.6°F).

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Average pressure in January
Irrigon, OR

Average pressure in January - Irrigon, OR
  • Average pressure in January: 30.19"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).

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Average wind speed in January
Irrigon, OR

Average wind speed in January - Irrigon, OR
  • Average wind speed in January: 6.6mph

The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is December (6.2mph).

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Average humidity in January
Irrigon, OR

Average humidity in January - Irrigon, OR
  • Average humidity in January: 79%

The month with the highest relative humidity is January (79%).
The months with the lowest relative humidity are July and August (36%).

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Average rainfall in January
Irrigon, OR

Average rainfall in January - Irrigon, OR
  • Average rainfall in January: 0.98"

The wettest month (with the highest rainfall) is March (1.02").
The driest month (with the least rainfall) is July (0.16").

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Average rainfall days in January
Irrigon, OR

Average rainfall days in January - Irrigon, OR
  • Average rainfall days in January: 11.3 days

The month with the highest number of rainy days is March (13.1 days).
The month with the least rainy days is July (3.8 days).

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Average snowfall in January
Irrigon, OR

Average snowfall in January - Irrigon, OR
  • Average snowfall in January: 1.06"

The month with the highest snowfall is February (2.83").
The months with the least snowfall are April, May, June, July, August and October (0").

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Average snowfall days in January
Irrigon, OR

Average snowfall days in January - Irrigon, OR
  • Average snowfall days in January: 2.3 days

The month with the highest number of snowfall days is December (3.2 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).

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

Average daylight in January / Average sunshine in January - Irrigon, OR
  • Average daylight in January: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in January: 5h and 2min

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).

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Average sunshine days in January
Irrigon, OR

Average sunshine days in January - Irrigon, OR
  • Average sunshine days in January: 15.7 days

The month with the most sunshine days is July (25.3 days).
The month with the least sunshine days is February (14 days).

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Average UV index in January
Irrigon, OR

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

The month with the highest UV index is July (UV index 7).
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
Irrigon, OR

Average cloud cover in January - Irrigon, OR
  • Average cloud cover in January: 44

The months with the most cloud cover are January and December (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 9).

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Average visibility in January
Irrigon, OR

Average visibility in January - Irrigon, OR
  • Average visibility in January: 6mi

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

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Irrigon, Oregon, USA

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