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 signals a shift in temperature, down from a chilly 45.9°F (7.7°C) in November to an icy 34.9°F (1.6°C). Nights in December cool down, indicating a minor disparity from daytime highs with an average low-temperature of 25.9°F (-3.4°C).Humidity
The average relative humidity in December is 84%.Rainfall
In Vandalia, during December, the rain falls for 5.4 days and regularly aggregates up to 0.55" (14mm) of precipitation. In Vandalia, during the entire year, the rain falls for 112.7 days and collects up to 10" (254mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 10.1 days. Throughout December, 0.59" (15mm) of snow is accumulated. Throughout the year, there are 46.4 snowfall days, and 5.87" (149mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 12min of daylight.On the first day of December, sunrise is at 7:52 am and sunset at 5:13 pm. On the last day of the month, sunrise is at 8:11 am and sunset at 5:22 pm EST.
Sunshine
The average sunshine in December in Vandalia is 3.2h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 1 during December leads to these advisories:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days 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 Vandalia have in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Vandalia, MI
- Average high temperature in December: 34.9°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 (28.8°F).
- Average low temperature in December: 25.9°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).
Average pressure in December
Vandalia, MI
- Average pressure in December: 30.09"Hg
The months with the highest atmospheric pressure are January, March, November and December (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Vandalia, MI
- Average wind speed in December: 9.7mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in December
Vandalia, MI
- Average humidity in December: 84%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and October (77%).
Average rainfall in December
Vandalia, MI
- Average rainfall in December: 0.55"
The wettest month (with the highest rainfall) is June (1.34").
The driest month (with the least rainfall) is February (0.47").
Average rainfall days in December
Vandalia, MI
- Average rainfall days in December: 5.4 days
The month with the highest number of rainy days is May (13.8 days).
The months with the least rainy days are January and February (4.1 days).
Average snowfall in December
Vandalia, MI
- Average snowfall in December: 0.59"
The month with the highest snowfall is January (1.65").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Vandalia, MI
- Average snowfall days in December: 10.1 days
The month with the highest number of snowfall days is January (13 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Vandalia, MI
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 3h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days in December
Vandalia, MI
- Average sunshine days in December: 18.5 days
The months with the most sunshine days are March and November (18.7 days).
The month with the least sunshine days is June (13.2 days).
Average UV index in December
Vandalia, MI
- Average UV index in December: 1
The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Vandalia, MI
- Average cloud cover in December: 67
The month with the most cloud cover is January (Cloud cover 73).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in December
Vandalia, MI
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, July, August and September (5mi).
Vandalia, Michigan, USA
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