December weather forecastReardan, WA
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Reardan, Washington, with an average temperature varying between 31.5°F (-0.3°C) and 22.1°F (-5.5°C).Temperature
December, with average temperatures reaching a high of 31.5°F (-0.3°C) and a low of 22.1°F (-5.5°C), is the coldest month.Humidity
In Reardan, the average relative humidity in December is 87%.Rainfall
The months with the most rainfall are January and December, with an average 1.93" (49mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. In December, it is snowing for 15.3 days. Throughout December, 8.31" (211mm) of snow is accumulated. In Reardan, Washington, during the entire year, snow falls for 60.5 days and aggregates up to 36.18" (919mm) of snow.Daylight
The month with the shortest days in Reardan, Washington, is December, with an average of 8h and 30min of daylight.On the first day of December in Reardan, sunrise is at 7:19 am and sunset at 4:01 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 4:09 pm PST.
Sunshine
The month with the least sunshine is December, with an average of 4h of sunshine.UV index
The months with the lowest UV index are November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: An average UV index of 1 in December transforms into this advice:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. When the Sun is at its strongest around midday, find shade and limit exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Reardan, WA
- Average high temperature in December: 31.5°F
The warmest months (with the highest average high temperature) are July and August (83.7°F).
The month with the lowest average high temperature is December (31.5°F).
- Average low temperature in December: 22.1°F
The month with the highest average low temperature is August (59.2°F).
The coldest month (with the lowest average low temperature) is December (22.1°F).
Average pressure in December
Reardan, WA
- Average pressure in December: 30.17"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.9"Hg).
Average wind speed in December
Reardan, WA
- Average wind speed in December: 6mph
The windiest months (with the highest average wind speed) are March and April (7.6mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in December
Reardan, WA
- Average humidity in December: 87%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (38%).
Average rainfall in December
Reardan, WA
- Average rainfall in December: 1.93"
The wettest months (with the highest rainfall) are January and December (1.93").
The driest month (with the least rainfall) is August (0.28").
Average rainfall days in December
Reardan, WA
- Average rainfall days in December: 8.6 days
The month with the highest number of rainy days is April (14.8 days).
The month with the least rainy days is July (4.6 days).
Average snowfall in December
Reardan, WA
- Average snowfall in December: 8.31"
The month with the highest snowfall is January (10.08").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Reardan, WA
- Average snowfall days in December: 15.3 days
The month with the highest number of snowfall days is December (15.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Reardan, WA
- Average daylight in December: 8h and 30min
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 December: 4h
The month with the most sunshine is August (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 4h).
Average sunshine days in December
Reardan, WA
- Average sunshine days in December: 12.7 days
The month with the most sunshine days is July (24.5 days).
The month with the least sunshine days is March (11.1 days).
Average UV index in December
Reardan, WA
- Average UV index in December: 1
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are November and December (UV index 1).
Average cloud cover in December
Reardan, WA
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in December
Reardan, WA
- Average visibility in December: 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).
