January weather forecast
Greenwater, WA

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Weather in January

January, the same as December, is another cold winter month in Greenwater, Washington, with temperature in the range of an average low of 31.5°F (-0.3°C) and an average high of 42.1°F (5.6°C).

Temperature

An average high-temperature of a still cold 42.1°F (5.6°C) marks January, exhibiting a close resemblance to the conditions in December. Throughout January nights, Greenwater registers an average low-temperature of 31.5°F (-0.3°C).

Humidity

The months with the highest humidity are January and February, with an average relative humidity of 87%.

Rainfall

January is the month with the most rainfall. Rain falls for 17.5 days and accumulates 5.71" (145mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall in Greenwater. In Greenwater, in January, snow falls for 3.6 days, with typically accumulated 3.7" (94mm) of snow. In Greenwater, during the entire year, snow falls for 20.8 days and aggregates up to 14.29" (363mm) of snow.

Daylight

In Greenwater, the average length of the day in January is 9h and 1min.
On the first day of the month, sunrise is at 7:52 am and sunset at 4:27 pm. On the last day of January, in Greenwater, sunrise is at 7:33 am and sunset at 5:06 pm PST.

Sunshine

In January, the average sunshine is 4.1h.

UV index

The average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: In January, a daily UV index of 2 turns into the following recommendations:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is January cold in Greenwater?

An average high-temperature, in January, in Greenwater, is 42.1°F (5.6°C) and the average low-temperature is 31.5°F (-0.3°C).

What are the most humid months in Greenwater?

January and February, with an average relative humidity of 87%, are most humid months.

What is the average humidity in January in Greenwater?

In Greenwater, Washington, the average relative humidity in January is 87%.

What is the rainiest month in Greenwater?

The month with the most rainfall is January, when the rain falls for 17.5 days and typically aggregates up to 5.71" (145mm) of precipitation.

How many days does it rain in January in Greenwater?

In Greenwater, in January, it is raining for 17.5 days, with typically 5.71" (145mm) of accumulated precipitation.

How many days does it snow in January in Greenwater?

In Greenwater, in January, snow falls for 3.6 days, with typically accumulated 3.7" (94mm) of snow.

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

In January, the average day length is 9h and 1min.

When are sunrise and sunset in January in Greenwater?

On the first day of January in Greenwater, Washington, sunrise is at 7:52 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 5:06 pm PST.

How many hours of sunshine does Greenwater have in January?

In Greenwater, Washington, the average sunshine duration in January is 4.1h.

What is the UV index intensity in January in Greenwater?

The average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's 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
Greenwater, WA

Average temperature in January - Greenwater, WA
  • Average high temperature in January: 42.1°F

The warmest month (with the highest average high temperature) is August (73.9°F).
The month with the lowest average high temperature is December (39.9°F).

  • Average low temperature in January: 31.5°F

The month with the highest average low temperature is August (48.9°F).
The coldest month (with the lowest average low temperature) is December (30.2°F).

Average pressure in January
Greenwater, WA

Average pressure in January - Greenwater, WA
  • Average pressure in January: 30.11"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is August (29.99"Hg).

Average wind speed in January
Greenwater, WA

Average wind speed in January - Greenwater, WA
  • Average wind speed in January: 5.3mph

The windiest month (with the highest average wind speed) is January (5.3mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).

Average humidity in January
Greenwater, WA

Average humidity in January - Greenwater, WA
  • Average humidity in January: 87%

The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is July (70%).

Average rainfall in January
Greenwater, WA

Average rainfall in January - Greenwater, WA
  • Average rainfall in January: 5.71"

The wettest month (with the highest rainfall) is January (5.71").
The driest month (with the least rainfall) is July (0.59").

Average rainfall days in January
Greenwater, WA

Average rainfall days in January - Greenwater, WA
  • Average rainfall days in January: 17.5 days

The month with the highest number of rainy days is March (20.4 days).
The month with the least rainy days is August (6.8 days).

Average snowfall in January
Greenwater, WA

Average snowfall in January - Greenwater, WA
  • Average snowfall in January: 3.7"

The month with the highest snowfall is February (4.76").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in January
Greenwater, WA

Average snowfall days in January - Greenwater, WA
  • Average snowfall days in January: 3.6 days

The month with the highest number of snowfall days is February (5.9 days).
The months with the least snowfall days are June, July, August and October (0 days).

Average daylight in January /
Average sunshine in January
Greenwater, WA

Average daylight in January / Average sunshine in January - Greenwater, WA
  • Average daylight in January: 9h and 0min

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 36min).

  • Average sunshine in January: 4h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 3h and 54min).

Average sunshine days in January
Greenwater, WA

Average sunshine days in January - Greenwater, WA
  • Average sunshine days in January: 11.3 days

The month with the most sunshine days is August (22.1 days).
The month with the least sunshine days is February (8.8 days).

Average UV index in January
Greenwater, WA

Average UV index in January - Greenwater, WA
  • Average UV index in January: 2

The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is November (UV index 1).

Average cloud cover in January
Greenwater, WA

Average cloud cover in January - Greenwater, WA
  • Average cloud cover in January: 58

The month with the most cloud cover is March (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in January
Greenwater, WA

Average visibility in January - Greenwater, WA
  • Average visibility in January: 4mi

The months with the highest visibility are May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, November and December (4mi).

Greenwater, Washington, USA

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