December weather forecastGalena, MO
December
Weather in December
The first month of the winter, December, is also a frosty month in Galena, Missouri, with an average temperature fluctuating between 30.7°F (-0.7°C) and 45.7°F (7.6°C).Temperature
With December's arrival, Galena's weather changes as the average high-temperature falls from a moderate 55.4°F (13°C) in November to a frosty 45.7°F (7.6°C). During December, the average low-temperature is recorded at a freezing cold 30.7°F (-0.7°C).Humidity
In December, the average relative humidity is 75%.Rainfall
In December, the rain falls for 7.7 days. Throughout December, 1.89" (48mm) of precipitation is accumulated. Throughout the year, there are 151.8 rainfall days, and 35.71" (907mm) of precipitation is accumulated.Snowfall
January through May, November and December are months with snowfall. In Galena, in December, during 3.5 snowfall days, 0.75" (19mm) of snow is typically accumulated. Throughout the year, there are 18.4 snowfall days, and 7.72" (196mm) of snow is accumulated.Daylight
With an average of 9h and 42min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:08 am and sunset at 4:57 pm. On the last day of December, sunrise is at 7:26 am and sunset at 5:07 pm CST.
Sunshine
The average sunshine in December is 5.5h.UV index
The months with the lowest UV index are January, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index, 2 during December, leads to the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. During bright days, sunglasses that offer UVA and UVB defense are recommended. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Galena, MO
- Average high temperature in December: 45.7°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (42.6°F).
- Average low temperature in December: 30.7°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (27°F).
Average pressure in December
Galena, MO
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Galena, MO
- Average wind speed in December: 8.7mph
The windiest months (with the highest average wind speed) are February, March and April (9.4mph).
The calmest month (with the lowest average wind speed) is July (6mph).
Average humidity in December
Galena, MO
- Average humidity in December: 75%
The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January, July, August and October (73%).
Average rainfall in December
Galena, MO
- Average rainfall in December: 1.89"
The wettest month (with the highest rainfall) is May (5.16").
The driest month (with the least rainfall) is February (1.73").
Average rainfall days in December
Galena, MO
- Average rainfall days in December: 7.7 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is January (7.4 days).
Average snowfall in December
Galena, MO
- Average snowfall in December: 0.75"
The month with the highest snowfall is January (2.52").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Galena, MO
- Average snowfall days in December: 3.5 days
The month with the highest number of snowfall days is February (5.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Galena, 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 30min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in December
Galena, MO
- Average sunshine days in December: 20.5 days
The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is July (11.5 days).
Average UV index in December
Galena, MO
- Average UV index in December: 2
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, November and December (UV index 2).
Average cloud cover in December
Galena, MO
- Average cloud cover in December: 42
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in December
Galena, 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).
