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
The arrival of December corresponds with a minor reduction in the average high-temperature, down from November's 65.5°F (18.6°C) to a still refreshing 58.6°F (14.8°C). Washington reports an average low-temperature of 44.1°F (6.7°C) during the nights of December.Humidity
In December, the average relative humidity is 81%.Rainfall
In December, the rain falls for 10.9 days. Throughout December, 1.42" (36mm) of precipitation is accumulated. Throughout the year, in Washington, there are 137.6 rainfall days, and 18.23" (463mm) of precipitation is accumulated.Snowfall
January, February and December are months with snowfall in Washington, Mississippi. December is the first month it typically snows. Throughout December, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow. In Washington, Mississippi, during the entire year, snow falls for 1.4 days and aggregates up to 0.24" (6mm) of snow.Daylight
December has the shortest days of the year in Washington, with an average of 10h and 6min of daylight.On the first day of December in Washington, sunrise is at 6:47 am and sunset at 5:01 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 5:12 pm CST.
Sunshine
December has the least sunshine of the year, with an average of 4.9h of sunshine.UV index
The months with the lowest UV index in Washington are January and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 3 in December converts into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December in Washington?
What is the average humidity in December in Washington?
How much does it rain in Washington in December?
When does it start snowing in Washington?
What is the month with the shortest days in Washington?
What is the average length of the day in December in Washington?
What time are sunrise and 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?
When is the lowest UV index in Washington?
What is the UV index intensity in December in Washington?
Average temperature in December
Washington, MS
- Average high temperature in December: 58.6°F
The warmest month (with the highest average high temperature) is July (91.2°F).
The month with the lowest average high temperature is January (55.4°F).
- Average low temperature in December: 44.1°F
The month with the highest average low temperature is August (73°F).
The coldest month (with the lowest average low temperature) is January (40.5°F).
Average pressure in December
Washington, MS
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.96"Hg).
Average wind speed in December
Washington, MS
- Average wind speed in December: 7.3mph
The windiest month (with the highest average wind speed) is February (8mph).
The calmest months (with the lowest average wind speed) are July, August and September (5mph).
Average humidity in December
Washington, MS
- Average humidity in December: 81%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Washington, MS
- Average rainfall in December: 1.42"
The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is November (0.91").
Average rainfall days in December
Washington, MS
- Average rainfall days in December: 10.9 days
The month with the highest number of rainy days is July (16.1 days).
The month with the least rainy days is November (7.1 days).
Average snowfall in December
Washington, MS
- Average snowfall in December: 0.04"
The month with the highest snowfall is January (0.16").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Washington, MS
- Average snowfall days in December: 0.2 days
The month with the highest number of snowfall days is January (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Washington, MS
- Average daylight in December: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in December
Washington, MS
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is October (21.4 days).
The month with the least sunshine days is August (11 days).
Average UV index in December
Washington, MS
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in December
Washington, MS
- Average cloud cover in December: 47
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is October (Cloud cover 28).
Average visibility in December
Washington, MS
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, October, November and December (6mi).
The months with the lowest visibility are May, July, August and September (5mi).
Washington, Mississippi, USA
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