December weather forecastRombauer, MO
December
Weather in December
The first month of the winter, December, is also a frosty month in Rombauer, Missouri, with an average temperature fluctuating between 46.2°F (7.9°C) and 34°F (1.1°C).Temperature
Rombauer's transition into December involves a shift in temperature, receding from a mild 55.6°F (13.1°C) in November to a chilly 46.2°F (7.9°C). In the month of December, Rombauer witnesses a consistent average low-temperature of 34°F (1.1°C).Humidity
The average relative humidity in December is 77%.Rainfall
December is the month with the least rainfall. Rain falls for 6.8 days and accumulates 0.75" (19mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. In Rombauer, in December, during 1.2 snowfall days, 0.12" (3mm) of snow is typically accumulated. In Rombauer, during the entire year, snow falls for 6.5 days and aggregates up to 0.94" (24mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 42min of daylight.On the first day of December, sunrise is at 6:55 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 4:55 pm CST.
Sunshine
In December, the average sunshine is 5.1h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In December, the maximum UV index of 2 transforms into these recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. During bright days, sunglasses that offer UVA and UVB defense are recommended. Keep in mind! Snow's reflective quality can nearly 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
Rombauer, MO
- Average high temperature in December: 46.2°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (42.8°F).
- Average low temperature in December: 34°F
The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (29.5°F).
Average pressure in December
Rombauer, MO
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Rombauer, MO
- Average wind speed in December: 8.2mph
The windiest month (with the highest average wind speed) is February (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in December
Rombauer, MO
- Average humidity in December: 77%
The months with the highest relative humidity are March and May (78%).
The month with the lowest relative humidity is October (69%).
Average rainfall in December
Rombauer, MO
- Average rainfall in December: 0.75"
The wettest month (with the highest rainfall) is May (2.17").
The driest month (with the least rainfall) is December (0.75").
Average rainfall days in December
Rombauer, MO
- Average rainfall days in December: 6.8 days
The months with the highest number of rainy days are May and July (14.3 days).
The month with the least rainy days is January (6 days).
Average snowfall in December
Rombauer, MO
- Average snowfall in December: 0.12"
The month with the highest snowfall is February (0.39").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Rombauer, MO
- Average snowfall days in December: 1.2 days
The month with the highest number of snowfall days is February (2.1 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
Rombauer, MO
- Average daylight in December: 9h and 42min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 5h and 6min
The month with the most sunshine is June (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in December
Rombauer, MO
- Average sunshine days in December: 21.8 days
The month with the most sunshine days is January (22.5 days).
The month with the least sunshine days is July (13.8 days).
Average UV index in December
Rombauer, MO
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Rombauer, MO
- Average cloud cover in December: 44
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is June (Cloud cover 24).
Average visibility in December
Rombauer, MO
- 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).
