December weather forecastVandalia, OH
December
Weather in December
December, the first month of the winter in Vandalia, is still a cold month, with an average temperature varying between 28.8°F (-1.8°C) and 38.8°F (3.8°C).Temperature
The onset of December introduces a moderate change in Vandalia's weather, with average high-temperatures falling from November's frosty 49.1°F (9.5°C) to a cold 38.8°F (3.8°C). In Vandalia, December nights witness a steady temperature drop to a freezing cold 28.8°F (-1.8°C).Humidity
The average relative humidity in December is 82%.Rainfall
In December, in Vandalia, the rain falls for 8.7 days. Throughout December, 1.18" (30mm) of precipitation is accumulated. In Vandalia, during the entire year, the rain falls for 138.9 days and collects up to 17.01" (432mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Vandalia, in December, snow falls for 7.2 days, with typically accumulated 0.91" (23mm) of snow. In Vandalia, during the entire year, snow falls for 33.2 days and aggregates up to 4.96" (126mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:39 am and sunset at 5:12 pm. On the last day of December, sunrise is at 7:58 am and sunset at 5:22 pm EST.
Sunshine
In December, the average sunshine is 4h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays 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. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Tightly woven clothing, when worn loosely, shields effectively against the Sun. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Vandalia, OH
- Average high temperature in December: 38.8°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (32.7°F).
- Average low temperature in December: 28.8°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in December
Vandalia, OH
- Average pressure in December: 30.12"Hg
The months with the highest atmospheric pressure are January and November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Vandalia, OH
- Average wind speed in December: 9.5mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in December
Vandalia, OH
- Average humidity in December: 82%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in December
Vandalia, OH
- Average rainfall in December: 1.18"
The wettest month (with the highest rainfall) is May (2.36").
The driest months (with the least rainfall) are January, February and November (0.98").
Average rainfall days in December
Vandalia, OH
- Average rainfall days in December: 8.7 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is February (6.6 days).
Average snowfall in December
Vandalia, OH
- Average snowfall in December: 0.91"
The month with the highest snowfall is January (1.34").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Vandalia, OH
- Average snowfall days in December: 7.2 days
The month with the highest number of snowfall days is January (9.8 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, OH
- Average daylight in December: 9h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 4h and 0min
The months with the most sunshine are June and July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in December
Vandalia, OH
- Average sunshine days in December: 15.7 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (11 days).
Average UV index in December
Vandalia, OH
- Average UV index in December: 2
The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Vandalia, OH
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Vandalia, OH
- 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).
