December weather forecastPomeroy, WA
December
Weather in December
The first month of the winter, December, is also a wintry month in Pomeroy, Washington, with an average temperature varying between 25.9°F (-3.4°C) and 36.3°F (2.4°C).Temperature
Pomeroy's coldest temperatures are experienced in December, with average high temperatures of 36.3°F (2.4°C) and lows of 25.9°F (-3.4°C).Humidity
In December, the average relative humidity is 80%.Rainfall
The months with the most rainfall are March and December, with an average 1.69" (43mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. In Pomeroy, during December, snow falls for 8 days and regularly aggregates up to 3.46" (88mm) of snow. In Pomeroy, during the entire year, snow falls for 32.7 days and aggregates up to 16.77" (426mm) of snow.Daylight
December has the shortest days of the year, with an average of 8h and 42min of daylight.On the first day of the month, sunrise is at 7:14 am and sunset at 4:05 pm. On the last day of December, sunrise is at 7:34 am and sunset at 4:13 pm PST.
Sunshine
In December, the average sunshine is 5.3h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 2 during December translates into the following guidance:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Pomeroy, WA
- Average high temperature in December: 36.3°F
The warmest month (with the highest average high temperature) is August (83.8°F).
The month with the lowest average high temperature is December (36.3°F).
- Average low temperature in December: 25.9°F
The month with the highest average low temperature is August (61.7°F).
The coldest month (with the lowest average low temperature) is December (25.9°F).
Average pressure in December
Pomeroy, WA
- Average pressure in December: 30.17"Hg
The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in December
Pomeroy, WA
- Average wind speed in December: 6.7mph
The windiest month (with the highest average wind speed) is April (8.1mph).
The calmest months (with the lowest average wind speed) are August and September (6mph).
Average humidity in December
Pomeroy, WA
- Average humidity in December: 80%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (37%).
Average rainfall in December
Pomeroy, WA
- Average rainfall in December: 1.69"
The wettest months (with the highest rainfall) are March and December (1.69").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in December
Pomeroy, WA
- Average rainfall days in December: 10.6 days
The month with the highest number of rainy days is March (15.7 days).
The month with the least rainy days is July (4.8 days).
Average snowfall in December
Pomeroy, WA
- Average snowfall in December: 3.46"
The month with the highest snowfall is February (5.12").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Pomeroy, WA
- Average snowfall days in December: 8 days
The months with the highest number of snowfall days are February and December (8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Pomeroy, WA
- Average daylight in December: 8h and 42min
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 42min).
- Average sunshine in December: 5h and 18min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in December
Pomeroy, WA
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is July (25 days).
The month with the least sunshine days is March (11.9 days).
Average UV index in December
Pomeroy, WA
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Pomeroy, WA
- Average cloud cover in December: 45
The months with the most cloud cover are January and February (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 11).
Average visibility in December
Pomeroy, 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).
