January weather forecast and climate
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 a frosty winter month, with average temperature varying between 32.5°F (0.3°C) and 47.8°F (8.8°C).

Temperature

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

Humidity

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

Rainfall

In Grants Pass, 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 January, snow falls for 1.3 days, with typically accumulated 1.34" (34mm) of snow. Throughout the year, there are 7.9 snowfall days, and 5.12" (130mm) of snow is accumulated.

Daylight

The average length of the day in January is 9.5h.

Sunshine

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

UV index

Months with the lowest UV index in Grants Pass are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from the exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 2 transform into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. 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.
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FAQ

What is the most humid month in Grants Pass?

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

What is the average humidity in January in Grants Pass?

The average relative humidity in January in Grants Pass is 85%.

How much does it rain in Grants Pass in January?

In Grants Pass, in January, it is raining for 15.3 days, with typically 3.98" (101mm) of accumulated precipitation.

How many days does it snow in January in Grants Pass?

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

How many hours of daylight does Grants Pass have in January?

In Grants Pass, the average length of the day in January is 9.5h.

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

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

When is the lowest UV index in Grants Pass?

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

What is the UV index reading in January in Grants Pass?

In January, the average daily maximum UV index in Grants Pass, Oregon, is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to the Sun's UV rays.

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"

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

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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").
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).
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: 9.5h

The month with the longest days is June (Average daylight: 15.3h).
The month with the shortest days is December (Average daylight: 9.1h).

  • Average sunshine in January: 4.9h

Months with the most sunshine are July and August (Average sunshine: 11.8h).
The month with the least sunshine is December (Average sunshine: 4.7h).

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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).
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).
Months with the lowest visibility are January, February, March, April and December (4mi).

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