Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
December brings a minor decrease, with the average high-temperature reducing from a moderate 60.1°F (15.6°C) in November to a chilly 49.6°F (9.8°C). During December, the temperature is averaged to a low of 34.7°F (1.5°C) at night.Humidity
In December, the average relative humidity in Washington is 67%.Rainfall
In Washington, during December, the rain falls for 6 days and regularly aggregates up to 1.18" (30mm) of precipitation. Throughout the year, in Washington, there are 116.5 rainfall days, and 24.21" (615mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall in Washington, Oklahoma. In Washington, during December, snow falls for 1.4 days and regularly aggregates up to 0.98" (25mm) of snow. In Washington, during the entire year, snow falls for 6.5 days and aggregates up to 3.74" (95mm) of snow.Daylight
With an average of 9h and 48min of daylight, December has the shortest days of the year.On the first day of December in Washington, sunrise is at 7:20 am and sunset at 5:18 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 5:28 pm CST.
Sunshine
With an average of 5.9h of sunshine, December has the least sunshine of the year in Washington, Oklahoma.UV index
The month with the lowest UV index is December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 2 in December converts into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
What is the usual temperature for Washington in December?
What is the average humidity in December in Washington?
How much does it rain in Washington in December?
How much does it snow in Washington in December?
What is the month with the shortest days in Washington?
How many hours of daylight does Washington have in December?
When is the sunrise / sunset in December in Washington?
What is the month with the least sunshine in Washington?
How many hours of sunshine does Washington have in December?
What is the month with the lowest UV index in Washington?
How high is the UV index in December in Washington?
Average temperature in December
Washington, OK
- Average high temperature in December: 49.6°F
The warmest months (with the highest average high temperature) are July and August (93°F).
The month with the lowest average high temperature is January (49.5°F).
- Average low temperature in December: 34.7°F
The month with the highest average low temperature is July (72.9°F).
The coldest month (with the lowest average low temperature) is January (33.3°F).
Average pressure in December
Washington, OK
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Washington, OK
- Average wind speed in December: 9.9mph
The windiest month (with the highest average wind speed) is April (11.7mph).
The calmest months (with the lowest average wind speed) are July and August (8.1mph).
Average humidity in December
Washington, OK
- Average humidity in December: 67%
The month with the highest relative humidity is May (76%).
The month with the lowest relative humidity is August (60%).
Average rainfall in December
Washington, OK
- Average rainfall in December: 1.18"
The wettest month (with the highest rainfall) is May (3.54").
The driest month (with the least rainfall) is November (0.98").
Average rainfall days in December
Washington, OK
- Average rainfall days in December: 6 days
The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is January (5.2 days).
Average snowfall in December
Washington, OK
- Average snowfall in December: 0.98"
The month with the highest snowfall is February (1.65").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Washington, OK
- Average snowfall days in December: 1.4 days
The month with the highest number of snowfall days is February (2.3 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
Washington, OK
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in December: 5h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in December
Washington, OK
- Average sunshine days in December: 23.2 days
The month with the most sunshine days is January (24 days).
The month with the least sunshine days is May (14.4 days).
Average UV index in December
Washington, OK
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in December
Washington, OK
- Average cloud cover in December: 33
The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in December
Washington, OK
- 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).
Washington, Oklahoma, USA
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