January weather forecast
Cowiche, WA

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Weather in January

January, the same as December, is a wintry winter month in Cowiche, Washington, with an average temperature varying between 25.5°F (-3.6°C) and 36.1°F (2.3°C).

Temperature

Cowiche, Washington, notes an average high-temperature of a still wintry 36.1°F (2.3°C) in January, hardly diverging from December. January nights observe an average temperature dip to a freezing cold 25.5°F (-3.6°C).

Humidity

With an average relative humidity of 83%, January is the most humid month.

Rainfall

In Cowiche, in January, it is raining for 10.5 days, with typically 0.83" (21mm) of accumulated precipitation. Throughout the year, there are 87.6 rainfall days, and 5.94" (151mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, September, November and December. In January, it is snowing for 4.4 days. Throughout January, 1.89" (48mm) of snow is accumulated. In Cowiche, during the entire year, snow falls for 19.9 days and aggregates up to 8.62" (219mm) of snow.

Daylight

In January, the average length of the day is 9h and 4min.
On the first day of the month, sunrise is at 7:47 am and sunset at 4:25 pm. On the last day of January, sunrise is at 7:28 am and sunset at 5:04 pm PST.

Sunshine

The month with the least sunshine is January, with an average of 5.5h of sunshine.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: An average UV index of 2 in January transforms into this advice:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Updated: Aug 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is January?

The high-temperature during January is 36.1°F (2.3°C) and the low-temperature is 25.5°F (-3.6°C).

What is the most humid month?

With an average relative humidity of 83%, January is the most humid month.

What is the average humidity in January?

The average relative humidity in January is 83%.

How many days does it rain in January?

In Cowiche, during January, the rain falls for 10.5 days and regularly aggregates up to 0.83" (21mm) of precipitation.

How many days does it snow in January?

In Cowiche, during January, snow falls for 4.4 days and regularly aggregates up to 1.89" (48mm) of snow.

What is the average length of the day in January?

In Cowiche, the average day length in January is 9h and 4min.

When are sunrise and sunset in January?

In January, on the first day of the month, sunrise is at 7:47 am and sunset at 4:25 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 5:04 pm PST.

What is the month with the least sunshine?

The month with the least sunshine is January, with an average of 5.5h of sunshine.

How long on average sun shines in January?

In Cowiche, the average sunshine duration in January is 5.5h.

What is the month with the lowest UV index?

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

What is the UV index reading in January?

The average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a low health threat from 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
Cowiche, WA

Average temperature in January - Cowiche, WA
  • Average high temperature in January: 36.1°F

The warmest month (with the highest average high temperature) is August (85.1°F).
The month with the lowest average high temperature is December (36°F).

  • Average low temperature in January: 25.5°F

The month with the highest average low temperature is August (58.8°F).
The coldest month (with the lowest average low temperature) is December (23.9°F).

Average pressure in January
Cowiche, WA

Average pressure in January - Cowiche, WA
  • Average pressure in January: 30.16"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).

Average wind speed in January
Cowiche, WA

Average wind speed in January - Cowiche, WA
  • Average wind speed in January: 4.3mph

The windiest month (with the highest average wind speed) is June (7.4mph).
The calmest month (with the lowest average wind speed) is December (4.2mph).

Average humidity in January
Cowiche, WA

Average humidity in January - Cowiche, WA
  • Average humidity in January: 83%

The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are July and August (41%).

Average rainfall in January
Cowiche, WA

Average rainfall in January - Cowiche, WA
  • Average rainfall in January: 0.83"

The wettest month (with the highest rainfall) is December (0.87").
The driest month (with the least rainfall) is July (0.08").

Average rainfall days in January
Cowiche, WA

Average rainfall days in January - Cowiche, WA
  • Average rainfall days in January: 10.5 days

The month with the highest number of rainy days is March (10.8 days).
The month with the least rainy days is July (2.3 days).

Average snowfall in January
Cowiche, WA

Average snowfall in January - Cowiche, WA
  • Average snowfall in January: 1.89"

The month with the highest snowfall is December (3.07").
The months with the least snowfall are May, June, July, August and October (0").

Average snowfall days in January
Cowiche, WA

Average snowfall days in January - Cowiche, WA
  • Average snowfall days in January: 4.4 days

The month with the highest number of snowfall days is December (5.7 days).
The months with the least snowfall days are May, June, July, August and October (0 days).

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

Average daylight in January / Average sunshine in January - Cowiche, WA
  • Average daylight in January: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).

  • Average sunshine in January: 5h and 3min

The months with the most sunshine are July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 30min).

Average sunshine days in January
Cowiche, WA

Average sunshine days in January - Cowiche, WA
  • Average sunshine days in January: 16.7 days

The month with the most sunshine days is July (27.6 days).
The month with the least sunshine days is February (15.5 days).

Average UV index in January
Cowiche, WA

Average UV index in January - Cowiche, WA
  • 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).

Average cloud cover in January
Cowiche, WA

Average cloud cover in January - Cowiche, WA
  • Average cloud cover in January: 40

The month with the most cloud cover is January (Cloud cover 40).
The months with the least cloud cover are July and August (Cloud cover 9).

Average visibility in January
Cowiche, WA

Average visibility in January - Cowiche, WA
  • Average visibility in January: 5mi

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

Cowiche, Washington, USA

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