December weather forecastMineral, WA
December
Weather in December
December, the first month of the winter in Mineral, is still a cold month, with an average temperature fluctuating between 31.1°F (-0.5°C) and 41.2°F (5.1°C).Temperature
Mineral's December weather, with an average high temperature of 41.2°F (5.1°C) and an average low temperature of 31.1°F (-0.5°C), tends to be the coldest of the year.Humidity
In Mineral, the average relative humidity in December is 87%.Rainfall
December is the month with the most rainfall. Rain falls for 18.6 days and accumulates 5.71" (145mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Mineral, Washington. In December, it is snowing for 3.8 days. Throughout December, 1.54" (39mm) of snow is accumulated. In Mineral, during the entire year, snow falls for 20.4 days and aggregates up to 13.62" (346mm) of snow.Daylight
The month with the shortest days is December, with an average of 8h and 36min of daylight.On the first day of the month, sunrise is at 7:33 am and sunset at 4:22 pm. On the last day of December, sunrise is at 7:53 am and sunset at 4:30 pm PST.
Sunshine
With an average of 4.1h of sunshine, December has the least sunshine of the year.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 estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, the maximum UV index of 2 translates into these guidelines:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Mineral, WA
- Average high temperature in December: 41.2°F
The warmest month (with the highest average high temperature) is August (75°F).
The month with the lowest average high temperature is December (41.2°F).
- Average low temperature in December: 31.1°F
The month with the highest average low temperature is August (49.5°F).
The coldest month (with the lowest average low temperature) is December (31.1°F).
Average pressure in December
Mineral, WA
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in December
Mineral, WA
- Average wind speed in December: 4.8mph
The windiest month (with the highest average wind speed) is January (5mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).
Average humidity in December
Mineral, WA
- Average humidity in December: 87%
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is July (70%).
Average rainfall in December
Mineral, WA
- Average rainfall in December: 5.71"
The wettest month (with the highest rainfall) is December (5.71").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in December
Mineral, WA
- Average rainfall days in December: 18.6 days
The month with the highest number of rainy days is March (20.2 days).
The month with the least rainy days is August (6.1 days).
Average snowfall in December
Mineral, WA
- Average snowfall in December: 1.54"
The month with the highest snowfall is February (4.84").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Mineral, WA
- Average snowfall days in December: 3.8 days
The month with the highest number of snowfall days is February (6 days).
The months with the least snowfall days are June, July, August and October (0 days).
Average daylight in December /
Average sunshine in December
Mineral, WA
- Average daylight in December: 8h and 36min
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 December: 4h and 6min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).
Average sunshine days in December
Mineral, WA
- Average sunshine days in December: 10.6 days
The month with the most sunshine days is August (22.9 days).
The month with the least sunshine days is February (8 days).
Average UV index in December
Mineral, 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
Mineral, WA
- Average cloud cover in December: 57
The months with the most cloud cover are January, February, March and December (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in December
Mineral, WA
- Average visibility in December: 4mi
The months with the highest visibility are April, May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, November and December (4mi).
