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
Washington's transition into December involves a shift in temperature, receding from a moderate 60.1°F (15.6°C) in November to a frosty 49.6°F (9.8°C). Nighttime temperatures consistently average a cold 34.7°F (1.5°C) during December.Humidity
In December, the average relative humidity in Washington, Oklahoma, is 67%.Rainfall
In December, the rain falls for 6 days. Throughout December, 1.18" (30mm) of precipitation is accumulated. In Washington, during the entire year, the rain falls for 116.5 days and collects up to 24.21" (615mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In December, it is snowing for 1.4 days. Throughout December, 0.98" (25mm) of snow is accumulated. In Washington, during the entire year, snow falls for 6.5 days and aggregates up to 3.74" (95mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 48min of daylight.On the first day of the month, sunrise is at 7:20 am and sunset at 5:18 pm. On the last day of December, sunrise is at 7:37 am and sunset at 5:28 pm CST.
Sunshine
December has the least sunshine of the year, with an average of 5.9h of sunshine.UV index
With an average maximum UV index of 2, December is the month with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In December, a daily UV index of 2 turns into the following recommendations:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Washington have in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
What is the month with the lowest UV index?
How high is the UV index in December?
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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