December weather forecastMontesano, WA
December
Weather in December
December, the first month of the winter in Montesano, is also a frosty month, with an average temperature fluctuating between 34.7°F (1.5°C) and 43.9°F (6.6°C).Temperature
During the coldest month, December, temperatures average a high of 43.9°F (6.6°C) and a low of 34.7°F (1.5°C).Humidity
The months with the highest humidity are November and December, with an average relative humidity of 90%.Rainfall
The wettest months are January and December, with an average 5.04" (128mm) of rainfall.Snowfall
Months with snowfall are January through March, November and December. In Montesano, in December, during 0.6 snowfall days, 0.08" (2mm) of snow is typically accumulated. In Montesano, during the entire year, snow falls for 5.1 days and aggregates up to 2.32" (59mm) 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 December, sunrise is at 7:40 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:59 am and sunset at 4:35 pm PST.
Sunshine
The months with the least sunshine are January and December, with an average of 3.3h of sunshine.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 estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 2 during December leads to these instructions:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Montesano, WA
- Average high temperature in December: 43.9°F
The warmest month (with the highest average high temperature) is August (74.8°F).
The month with the lowest average high temperature is December (43.9°F).
- Average low temperature in December: 34.7°F
The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is February (34.5°F).
Average pressure in December
Montesano, WA
- Average pressure in December: 30.06"Hg
The months with the highest atmospheric pressure are January and July (30.07"Hg).
The month with the lowest atmospheric pressure is March (30.01"Hg).
Average wind speed in December
Montesano, WA
- Average wind speed in December: 5.1mph
The windiest month (with the highest average wind speed) is January (5.5mph).
The calmest month (with the lowest average wind speed) is September (3.9mph).
Average humidity in December
Montesano, WA
- Average humidity in December: 90%
The months with the highest relative humidity are November and December (90%).
The month with the lowest relative humidity is July (76%).
Average rainfall in December
Montesano, WA
- Average rainfall in December: 5.04"
The wettest months (with the highest rainfall) are January and December (5.04").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in December
Montesano, WA
- Average rainfall days in December: 18.7 days
The month with the highest number of rainy days is March (19.2 days).
The month with the least rainy days is August (5.9 days).
Average snowfall in December
Montesano, WA
- Average snowfall in December: 0.08"
The month with the highest snowfall is February (1.02").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Montesano, WA
- Average snowfall days in December: 0.6 days
The month with the highest number of snowfall days is February (2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Montesano, 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: 3h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The months with the least sunshine are January and December (Average sunshine: 3h and 18min).
Average sunshine days in December
Montesano, WA
- Average sunshine days in December: 11.1 days
The months with the most sunshine days are July and August (22.1 days).
The month with the least sunshine days is March (10 days).
Average UV index in December
Montesano, WA
- Average UV index in December: 2
The months with the highest UV index are June and 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
Montesano, WA
- Average cloud cover in December: 67
The months with the most cloud cover are January and December (Cloud cover 67).
The month with the least cloud cover is July (Cloud cover 42).
Average visibility in December
Montesano, WA
- Average visibility in December: 4mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
