January weather forecast
Gresham, OR

The fall colors in the trees and the fields around a beautiful house in Gresham, Oregon
The fall colors in the trees and the fields around a beautiful house in Gresham, Oregon

Weather in January

January, like December, is another chilly winter month in Gresham, Oregon, with an average temperature varying between 45.3°F (7.4°C) and 34.5°F (1.4°C).

Temperature

In January, the average high-temperature is relatively the same as in December - a still chilly 45.3°F (7.4°C). In January, the average low-temperature is 34.5°F (1.4°C).

Humidity

In Gresham, Oregon, the average relative humidity in January is 82%.

Rainfall

In January, the rain falls for 18.1 days. Throughout January, 4.96" (126mm) of precipitation is accumulated. Throughout the year, in Gresham, there are 165.6 rainfall days, and 34.65" (880mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through March, November and December. In Gresham, snow falls for 1.5 days, with typically accumulated 1.54" (39mm) of snow. In Gresham, during the entire year, snow falls for 8.2 days and aggregates up to 5.87" (149mm) of snow.

Daylight

In Gresham, Oregon, the average length of the day in January is 9h and 11min.
On the first day of January in Gresham, Oregon, sunrise is at 7:49 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 5:14 pm PST.

Sunshine

The months with the least sunshine in Gresham are January and February, with an average of 4.2h of sunshine.

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 estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In January, the average maximum UV index of 2 translate into the following recommendations:
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 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 Gresham?

In January, in Gresham, Oregon, the average high-temperature is 45.3°F (7.4°C), and the average low-temperature is 34.5°F (1.4°C).

What is the average humidity in January in Gresham?

In January, the average relative humidity in Gresham, Oregon, is 82%.

How many days does it rain in January in Gresham?

In Gresham, Oregon, in January, during 18.1 rainfall days, 4.96" (126mm) of precipitation is typically accumulated.

How much does it snow in Gresham in January?

In January, it is snowing for 1.5 days. Throughout January, 1.54" (39mm) of snow is accumulated.

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

In January, the average day length in Gresham, Oregon, is 9h and 11min.

When are sunrise and sunset in January in Gresham?

On the first day of January in Gresham, sunrise is at 7:49 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 5:14 pm PST.

What are the months with the least sunshine in Gresham?

The months with the least sunshine in Gresham are January and February, with an average of 4.2h of sunshine.

How long on average sun shines in January in Gresham?

The average sunshine duration in January in Gresham is 4.2h.

What is the month with the lowest UV index in Gresham?

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

How high is the UV index in January in Gresham?

In January, the average daily maximum UV index in Gresham, Oregon, is 2. A UV Index reading of 2, and below, represents a minimal hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Gresham, OR

Average temperature in January - Gresham, OR
  • Average high temperature in January: 45.3°F

The warmest month (with the highest average high temperature) is August (80.4°F).
The month with the lowest average high temperature is December (43.7°F).

  • Average low temperature in January: 34.5°F

The month with the highest average low temperature is August (53.4°F).
The coldest month (with the lowest average low temperature) is December (33.8°F).

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Average pressure in January
Gresham, OR

Average pressure in January - Gresham, OR
  • Average pressure in January: 30.12"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).

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Average wind speed in January
Gresham, OR

Average wind speed in January - Gresham, OR
  • Average wind speed in January: 6.8mph

The windiest month (with the highest average wind speed) is January (6.8mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).

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Average humidity in January
Gresham, OR

Average humidity in January - Gresham, OR
  • Average humidity in January: 82%

The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is August (64%).

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Average rainfall in January
Gresham, OR

Average rainfall in January - Gresham, OR
  • Average rainfall in January: 4.96"

The wettest month (with the highest rainfall) is December (5.31").
The driest month (with the least rainfall) is July (0.31").

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Average rainfall days in January
Gresham, OR

Average rainfall days in January - Gresham, OR
  • Average rainfall days in January: 18.1 days

The month with the highest number of rainy days is March (19.3 days).
The month with the least rainy days is August (4.4 days).

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Average snowfall in January
Gresham, OR

Average snowfall in January - Gresham, OR
  • Average snowfall in January: 1.54"

The month with the highest snowfall is March (1.73").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in January
Gresham, OR

Average snowfall days in January - Gresham, OR
  • Average snowfall days in January: 1.5 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
Gresham, OR

Average daylight in January / Average sunshine in January - Gresham, OR
  • Average daylight in January: 9h and 11min

The month with the longest days is June (Average daylight: 15h and 37min).
The month with the shortest days is December (Average daylight: 8h and 47min).

  • Average sunshine in January: 4h and 12min

The months with the most sunshine are July and August (Average sunshine: 10h and 54min).
The months with the least sunshine are January and February (Average sunshine: 4h and 12min).

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Average sunshine days in January
Gresham, OR

Average sunshine days in January - Gresham, OR
  • Average sunshine days in January: 11.6 days

The month with the most sunshine days is July (25 days).
The month with the least sunshine days is February (9.7 days).

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Average UV index in January
Gresham, OR

Average UV index in January - Gresham, 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
Gresham, OR

Average cloud cover in January - Gresham, OR
  • Average cloud cover in January: 56

The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 24).

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Average visibility in January
Gresham, OR

Average visibility in January - Gresham, OR
  • Average visibility in January: 5mi

The months with the highest visibility are August, September and October (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, November and December (5mi).

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