December weather forecastAmboy, WA
December
Weather in December
December, the first month of the winter in Amboy, is still a cold month, with an average temperature ranging between max 40.6°F (4.8°C) and min 30.7°F (-0.7°C).Temperature
December, with an average high of 40.6°F (4.8°C) and a low of 30.7°F (-0.7°C), signifies the coldest month of the year.Humidity
The average relative humidity in December in Amboy is 86%.Rainfall
In Amboy, Washington, in December, it is raining for 19.5 days, with typically 6.97" (177mm) of accumulated precipitation. Throughout the year, in Amboy, there are 182.3 rainfall days, and 48.11" (1222mm) of precipitation is accumulated.Snowfall
Months with snowfall in Amboy are January through March, November and December. In Amboy, in December, during 2 snowfall days, 1.14" (29mm) of snow is typically accumulated. In Amboy, Washington, during the entire year, snow falls for 11.4 days and aggregates up to 11.1" (282mm) of snow.Daylight
The month with the shortest days in Amboy, Washington, is December, with an average of 8h and 42min of daylight.On the first day of the month, sunrise is at 7:31 am and sunset at 4:26 pm. On the last day of December, in Amboy, sunrise is at 7:51 am and sunset at 4:35 pm PST.
Sunshine
In December, the average sunshine in Amboy is 3.3h.UV index
The average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: An average maximum UV index of 2 in December leads to these recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Amboy, WA
- Average high temperature in December: 40.6°F
The warmest month (with the highest average high temperature) is August (77.7°F).
The month with the lowest average high temperature is December (40.6°F).
- Average low temperature in December: 30.7°F
The month with the highest average low temperature is August (50.5°F).
The coldest month (with the lowest average low temperature) is December (30.7°F).
Average pressure in December
Amboy, WA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in December
Amboy, WA
- Average wind speed in December: 5.7mph
The windiest month (with the highest average wind speed) is January (6.1mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in December
Amboy, WA
- Average humidity in December: 86%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are July and August (69%).
Average rainfall in December
Amboy, WA
- Average rainfall in December: 6.97"
The wettest month (with the highest rainfall) is January (7.64").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in December
Amboy, 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 (5.6 days).
Average snowfall in December
Amboy, WA
- Average snowfall in December: 1.14"
The month with the highest snowfall is February (4.02").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Amboy, WA
- Average snowfall days in December: 2 days
The month with the highest number of snowfall days is February (4.2 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
Amboy, WA
- Average daylight in December: 8h and 42min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in December: 3h and 18min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 12min).
Average sunshine days in December
Amboy, WA
- Average sunshine days in December: 9.2 days
The month with the most sunshine days is August (23.4 days).
The month with the least sunshine days is February (8.1 days).
Average UV index in December
Amboy, WA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in December
Amboy, WA
- Average cloud cover in December: 66
The months with the most cloud cover are February and December (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Amboy, WA
- Average visibility in December: 4mi
The months with the highest visibility are June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, May, November and December (4mi).
