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
In Delphi, the average high-temperature in December gently drops from a chilly 48.7°F (9.3°C) in November to a wintry 40.6°F (4.8°C). During the nights in December, Delphi observes an average low-temperature of 28.2°F (-2.1°C).Humidity
The average relative humidity in December is 83%.Rainfall
In December, the rain falls for 12.5 days. Throughout December, 3.7" (94mm) of precipitation is accumulated. Throughout the year, there are 197.5 rainfall days, and 41.61" (1057mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Delphi, in December, snow falls for 11.4 days, with typically accumulated 7.64" (194mm) of snow. In Delphi, during the entire year, snow falls for 59.4 days and aggregates up to 37.4" (950mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.On the first day of December, sunrise is at 7:21 am and sunset at 5:02 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 5:12 pm EST.
Sunshine
In Delphi, the average sunshine in December is 4.3h.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 reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the average person.Note: The daily high UV index of 2 in December translates into this advice:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. 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
Is it cold during December?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Delphi have in December?
When are sunrise and sunset in December in Delphi?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Delphi, WV
- Average high temperature in December: 40.6°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (34.9°F).
- Average low temperature in December: 28.2°F
The month with the highest average low temperature is July (57.9°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in December
Delphi, WV
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in December
Delphi, WV
- Average wind speed in December: 7.1mph
The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in December
Delphi, WV
- Average humidity in December: 83%
The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are June, July and November (79%).
Average rainfall in December
Delphi, WV
- Average rainfall in December: 3.7"
The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is September (2.13").
Average rainfall days in December
Delphi, WV
- Average rainfall days in December: 12.5 days
The month with the highest number of rainy days is May (23.4 days).
The month with the least rainy days is January (11.4 days).
Average snowfall in December
Delphi, WV
- Average snowfall in December: 7.64"
The month with the highest snowfall is February (8.62").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Delphi, WV
- Average snowfall days in December: 11.4 days
The month with the highest number of snowfall days is January (15.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Delphi, WV
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 4h and 2min
The months with the most sunshine are June and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Delphi, WV
- Average sunshine days in December: 10 days
The month with the most sunshine days is October (14.6 days).
The month with the least sunshine days is May (5.9 days).
Average UV index in December
Delphi, WV
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Delphi, WV
- Average cloud cover in December: 60
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in December
Delphi, WV
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, October, November and December (5mi).
The months with the lowest visibility are January, February and September (4mi).
Delphi, West Virginia, USA
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