December weather forecast
Conway, WA

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Weather in December

December, the first month of the winter in Conway, is still a cold month, with temperature in the range of an average low of 36.3°F (2.4°C) and an average high of 42.6°F (5.9°C).

Temperature

Conway's coldest month, December, registers temperatures that range from a high of 42.6°F (5.9°C) to a low of 36.3°F (2.4°C).

Humidity

In Conway, the average relative humidity in December is 82%.

Rainfall

In Conway, during December, the rain falls for 19.5 days and regularly aggregates up to 4.06" (103mm) of precipitation. In Conway, Washington, during the entire year, the rain falls for 185.2 days and collects up to 34.72" (882mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall in Conway. In Conway, in December, snow falls for 1.5 days, with typically accumulated 0.47" (12mm) of snow. Throughout the year, there are 9.9 snowfall days, and 7.91" (201mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Conway, with an average of 8h and 24min of daylight.
On the first day of the month, sunrise is at 7:40 am and sunset at 4:17 pm. On the last day of December, sunrise is at 8:00 am and sunset at 4:25 pm PST.

Sunshine

December has the least sunshine of the year, with an average of 3.9h 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 value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for average individuals.
Note: A daily maximum UV index of 2 in December translates into the following instructions:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the coldest in Conway?

December, noted for its average high-temperature of 42.6°F (5.9°C) and an average low-temperature of 36.3°F (2.4°C), is considered the coldest month in Conway, Washington.

Is December cold in Conway?

The high-temperature, in December, in Conway, records 42.6°F (5.9°C), while the low-temperature is 36.3°F (2.4°C).

What is the average humidity in December in Conway?

In Conway, Washington, the average relative humidity in December is 82%.

How much does it rain in Conway in December?

In December, the rain falls for 19.5 days. Throughout December, 4.06" (103mm) of precipitation is accumulated.

How much does it snow in Conway in December?

In Conway, Washington, in December, snow falls for 1.5 days, with typically accumulated 0.47" (12mm) of snow.

What is the month with the shortest days in Conway?

With an average of 8h and 24min of daylight, December has the shortest days of the year in Conway, Washington.

How many hours of daylight does Conway have in December?

In December, the average day length in Conway, Washington, is 8h and 25min.

When are sunrise and sunset in December in Conway?

On the first day of December in Conway, sunrise is at 7:40 am and sunset at 4:17 pm. On the last day of the month, sunrise is at 8:00 am and sunset at 4:25 pm PST.

What is the month with the least sunshine in Conway?

The month with the least sunshine in Conway, Washington, is December, with an average of 3.9h of sunshine.

How many hours of sunshine does Conway have in December?

In Conway, Washington, the average sunshine duration in December is 3.9h.

What are the months with the lowest UV index in Conway?

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

How high is the UV index in December in Conway?

In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a low health risk 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 December
Conway, WA

Average temperature in December - Conway, WA
  • Average high temperature in December: 42.6°F

The warmest months (with the highest average high temperature) are July and August (68.4°F).
The month with the lowest average high temperature is December (42.6°F).

  • Average low temperature in December: 36.3°F

The month with the highest average low temperature is August (54.1°F).
The coldest month (with the lowest average low temperature) is February (36.1°F).

Average pressure in December
Conway, WA

Average pressure in December - Conway, WA
  • Average pressure in December: 30.07"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).

Average wind speed in December
Conway, WA

Average wind speed in December - Conway, WA
  • Average wind speed in December: 7.2mph

The windiest month (with the highest average wind speed) is November (7.5mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).

Average humidity in December
Conway, WA

Average humidity in December - Conway, WA
  • Average humidity in December: 82%

The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is July (75%).

Average rainfall in December
Conway, WA

Average rainfall in December - Conway, WA
  • Average rainfall in December: 4.06"

The wettest month (with the highest rainfall) is November (4.96").
The driest month (with the least rainfall) is July (0.63").

Average rainfall days in December
Conway, WA

Average rainfall days in December - Conway, WA
  • Average rainfall days in December: 19.5 days

The month with the highest number of rainy days is March (20.8 days).
The month with the least rainy days is August (7.2 days).

Average snowfall in December
Conway, WA

Average snowfall in December - Conway, WA
  • Average snowfall in December: 0.47"

The month with the highest snowfall is February (3.54").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Conway, WA

Average snowfall days in December - Conway, WA
  • Average snowfall days in December: 1.5 days

The month with the highest number of snowfall days is February (3.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Conway, WA

Average daylight in December / Average sunshine in December - Conway, WA
  • Average daylight in December: 8h and 2min

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in December: 3h and 5min

The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 54min).

Average sunshine days in December
Conway, WA

Average sunshine days in December - Conway, WA
  • Average sunshine days in December: 9.9 days

The month with the most sunshine days is August (22.3 days).
The month with the least sunshine days is November (8.1 days).

Average UV index in December
Conway, WA

Average UV index in December - Conway, WA
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in December
Conway, WA

Average cloud cover in December - Conway, WA
  • Average cloud cover in December: 59

The month with the most cloud cover is December (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 26).

Average visibility in December
Conway, WA

Average visibility in December - Conway, WA
  • Average visibility in December: 6mi

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

Conway, Washington, USA

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