January weather forecast
Coulee City, WA

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Weather in January

January in Coulee City, Washington, is an icy winter month, with an average temperature fluctuating between 32°F (0°C) and 21.9°F (-5.6°C).

Temperature

The advent of January denotes an average high-temperature of a cold 32°F (0°C), subtly different from December's 31.6°F (-0.2°C). In Coulee City, the average low-temperature during the month of January is a freezing cold 21.9°F (-5.6°C).

Humidity

January is the most humid month in Coulee City, with an average relative humidity of 89%.

Rainfall

In Coulee City, Washington, during January, the rain falls for 9.7 days and regularly aggregates up to 1.14" (29mm) of precipitation. In Coulee City, during the entire year, the rain falls for 102.1 days and collects up to 9.65" (245mm) of precipitation.

Snowfall

January through April, September through December are months with snowfall. January is the month with the most snowfall. Snow falls for 8.4 days and accumulates 4.41" (112mm) of snow.

Daylight

In Coulee City, the average length of the day in January is 8h and 58min.
On the first day of January in Coulee City, Washington, sunrise is at 7:45 am and sunset at 4:16 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:56 pm PST.

Sunshine

With an average of 4.1h of sunshine, January has the least sunshine of the year in Coulee City.

UV index

In Coulee City, the average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index, 2 during January, leads to the following recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
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Frequently asked questions

How cold is January in Coulee City?

An average high-temperature, in January, in Coulee City, is 32°F (0°C) and the average low-temperature is 21.9°F (-5.6°C).

What is the most humid month in Coulee City?

The most humid month in Coulee City is January, with an average relative humidity of 89%.

What is the average humidity in January in Coulee City?

In Coulee City, Washington, the average relative humidity in January is 89%.

How much does it rain in Coulee City in January?

In Coulee City, during January, the rain falls for 9.7 days and regularly aggregates up to 1.14" (29mm) of precipitation.

When does it snow the most in Coulee City?

The month with the most snowfall is January, when snow falls for 8.4 days and typically aggregates up to 4.41" (112mm) of snow.

How much does it snow in Coulee City in January?

In Coulee City, Washington, in January, snow falls for 8.4 days, with typically accumulated 4.41" (112mm) of snow.

What is the average length of the day in January in Coulee City?

In January, the average day length in Coulee City, Washington, is 8h and 58min.

When are sunrise and sunset in January in Coulee City?

On the first day of January, sunrise is at 7:45 am and sunset at 4:16 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:56 pm PST.

What is the month with the least sunshine in Coulee City?

With an average of 4.1h of sunshine, January has the least sunshine of the year in Coulee City, Washington.

How long on average sun shines in January in Coulee City?

The average sunshine duration in January in Coulee City is 4.1h.

How high is the UV index in January in Coulee City?

In January, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unsafe 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
Coulee City, WA

Average temperature in January - Coulee City, WA
  • Average high temperature in January: 32°F

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is December (31.6°F).

  • Average low temperature in January: 21.9°F

The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is December (21.4°F).

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Average pressure in January
Coulee City, WA

Average pressure in January - Coulee City, WA
  • Average pressure in January: 30.18"Hg

The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).

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Average wind speed in January
Coulee City, WA

Average wind speed in January - Coulee City, WA
  • Average wind speed in January: 4.9mph

The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is January (4.9mph).

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Average humidity in January
Coulee City, WA

Average humidity in January - Coulee City, WA
  • Average humidity in January: 89%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (36%).

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Average rainfall in January
Coulee City, WA

Average rainfall in January - Coulee City, WA
  • Average rainfall in January: 1.14"

The wettest months (with the highest rainfall) are May and December (1.18").
The driest months (with the least rainfall) are July and August (0.2").

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Average rainfall days in January
Coulee City, WA

Average rainfall days in January - Coulee City, WA
  • Average rainfall days in January: 9.7 days

The month with the highest number of rainy days is March (12.1 days).
The month with the least rainy days is August (3.2 days).

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Average snowfall in January
Coulee City, WA

Average snowfall in January - Coulee City, WA
  • Average snowfall in January: 4.41"

The month with the highest snowfall is January (4.41").
The months with the least snowfall are May, June, July and August (0").

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Average snowfall days in January
Coulee City, WA

Average snowfall days in January - Coulee City, WA
  • Average snowfall days in January: 8.4 days

The month with the highest number of snowfall days is December (10.5 days).
The months with the least snowfall days are May, June, July and August (0 days).

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Average daylight in January /
Average sunshine in January
Coulee City, WA

Average daylight in January / Average sunshine in January - Coulee City, 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 30min).

  • Average sunshine in January: 4h and 1min

The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in January
Coulee City, WA

Average sunshine days in January - Coulee City, WA
  • Average sunshine days in January: 16 days

The month with the most sunshine days is August (25.8 days).
The month with the least sunshine days is March (14.7 days).

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Average UV index in January
Coulee City, WA

Average UV index in January - Coulee City, WA
  • Average UV index in January: 2

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is November (UV index 1).

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Average cloud cover in January
Coulee City, WA

Average cloud cover in January - Coulee City, WA
  • Average cloud cover in January: 55

The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July and August (Cloud cover 12).

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Average visibility in January
Coulee City, WA

Average visibility in January - Coulee City, WA
  • Average visibility in January: 4mi

The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (4mi).

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Coulee City, Washington, USA

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