January weather forecast
Grants Pass, OR

Colorful balloons rise from the scenic grounds in a field near Grant Pass, Oregon
Colorful balloons rise from the scenic grounds in a field near Grant Pass, Oregon

Weather in January

January, the same as December, in Grants Pass, Oregon, is another chilly winter month, with an average temperature ranging between min 32.5°F (0.3°C) and max 47.8°F (8.8°C).

Temperature

In Grants Pass, the average high-temperature in January is almost the same as in December - a still frosty 47.8°F (8.8°C). The average low-temperature, in January, is 32.5°F (0.3°C).

Humidity

With an average relative humidity of 85%, January is the most humid month in Grants Pass.

Rainfall

In Grants Pass, in January, during 15.3 rainfall days, 3.98" (101mm) of precipitation is typically accumulated. In Grants Pass, during the entire year, the rain falls for 135.3 days and collects up to 23.54" (598mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall in Grants Pass. In Grants Pass, Oregon, during January, snow falls for 1.3 days and regularly aggregates up to 1.34" (34mm) of snow. In Grants Pass, Oregon, during the entire year, snow falls for 7.9 days and aggregates up to 5.12" (130mm) of snow.

Daylight

The average length of the day in January is 9h and 30min.
On the first day of the month, sunrise is at 7:42 am and sunset at 4:51 pm. On the last day of January, sunrise is at 7:27 am and sunset at 5:25 pm PST.

Sunshine

In January, the average sunshine is 4.9h.

UV index

The months with the lowest UV index 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 unsafe exposure to UV radiation for the average person.
Note: The daily maximum UV index of 2 in January interpret into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the 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.
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FAQ

What is the temperature in January in Grants Pass?

The average high-temperature, in January, is 47.8°F (8.8°C), while the average low-temperature is 32.5°F (0.3°C).

What is the most humid month in Grants Pass?

January is the most humid month in Grants Pass, Oregon, with an average relative humidity of 85%.

What is the average humidity in January in Grants Pass?

The average relative humidity in January is 85%.

How much does it rain in Grants Pass in January?

In Grants Pass, in January, during 15.3 rainfall days, 3.98" (101mm) of precipitation is typically accumulated.

How much does it snow in Grants Pass in January?

In Grants Pass, in January, snow falls for 1.3 days, with typically accumulated 1.34" (34mm) of snow.

What is the average length of the day in January in Grants Pass?

In Grants Pass, Oregon, the average day length in January is 9h and 30min.

When are sunrise and sunset in January in Grants Pass?

In January, on the first day of the month, sunrise is at 7:42 am and sunset at 4:51 pm. On the last day of the month, in Grants Pass, sunrise is at 7:27 am and sunset at 5:25 pm PST.

How long on average sun shines in January in Grants Pass?

In January, the average sunshine duration in Grants Pass is 4.9h.

What are the months with the lowest UV index in Grants Pass?

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

How high is the UV index in January in Grants Pass?

The average daily maximum UV index in January in Grants Pass is 2. A UV Index estimate of 2, and below, represents a low health threat 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
Grants Pass, OR

Average temperature in January - Grants Pass, OR
  • Average high temperature in January: 47.8°F

The warmest month (with the highest average high temperature) is August (84.7°F).
The month with the lowest average high temperature is December (46°F).

  • Average low temperature in January: 32.5°F

The month with the highest average low temperature is August (49.1°F).
The coldest month (with the lowest average low temperature) is December (31.5°F).

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Average pressure in January
Grants Pass, OR

Average pressure in January - Grants Pass, OR
  • Average pressure in January: 30.13"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is August (29.99"Hg).

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Average wind speed in January
Grants Pass, OR

Average wind speed in January - Grants Pass, OR
  • Average wind speed in January: 3.9mph

The windiest month (with the highest average wind speed) is March (4mph).
The calmest month (with the lowest average wind speed) is August (3.2mph).

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Average humidity in January
Grants Pass, OR

Average humidity in January - Grants Pass, OR
  • Average humidity in January: 85%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (63%).

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Average rainfall in January
Grants Pass, OR

Average rainfall in January - Grants Pass, OR
  • Average rainfall in January: 3.98"

The wettest month (with the highest rainfall) is December (4.02").
The driest month (with the least rainfall) is July (0.12").

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Average rainfall days in January
Grants Pass, OR

Average rainfall days in January - Grants Pass, OR
  • Average rainfall days in January: 15.3 days

The month with the highest number of rainy days is March (18.7 days).
The month with the least rainy days is August (2.5 days).

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Average snowfall in January
Grants Pass, OR

Average snowfall in January - Grants Pass, OR
  • Average snowfall in January: 1.34"

The month with the highest snowfall is February (1.5").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in January
Grants Pass, OR

Average snowfall days in January - Grants Pass, OR
  • Average snowfall days in January: 1.3 days

The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in January /
Average sunshine in January
Grants Pass, OR

Average daylight in January / Average sunshine in January - Grants Pass, OR
  • Average daylight in January: 9h and 30min

The month with the longest days is June (Average daylight: 15h and 14min).
The month with the shortest days is December (Average daylight: 9h and 8min).

  • Average sunshine in January: 4h and 54min

The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).

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Average sunshine days in January
Grants Pass, OR

Average sunshine days in January - Grants Pass, OR
  • Average sunshine days in January: 14.7 days

The month with the most sunshine days is July (26.7 days).
The month with the least sunshine days is March (10.8 days).

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Average UV index in January
Grants Pass, OR

Average UV index in January - Grants Pass, 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).

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Average cloud cover in January
Grants Pass, OR

Average cloud cover in January - Grants Pass, OR
  • Average cloud cover in January: 49

The month with the most cloud cover is March (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 16).

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Average visibility in January
Grants Pass, OR

Average visibility in January - Grants Pass, OR
  • Average visibility in January: 4mi

The month with the highest visibility is August (6mi).
The months with the lowest visibility are January, February, March, April and December (4mi).

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