December weather forecastSalem, MO
December
Weather in December
December, the first month of the winter in Salem, is still a chilly month, with an average temperature varying between 43.5°F (6.4°C) and 29.7°F (-1.3°C).Temperature
With December's arrival, Salem's weather changes as the average high-temperature falls from a cool 53.4°F (11.9°C) in November to a chilly 43.5°F (6.4°C). Salem, during the month of December, experiences an average low-temperature of 29.7°F (-1.3°C).Humidity
In Salem, the average relative humidity in December is 78%.Rainfall
In Salem, Missouri, during December, the rain falls for 8.2 days and regularly aggregates up to 2.28" (58mm) of precipitation. Throughout the year, there are 151.7 rainfall days, and 33.98" (863mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In Salem, during December, snow falls for 4.5 days and regularly aggregates up to 1.65" (42mm) of snow. In Salem, during the entire year, snow falls for 24 days and aggregates up to 10.98" (279mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 36min of daylight.On the first day of December, sunrise is at 7:03 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 4:57 pm CST.
Sunshine
In December, the average sunshine is 4.9h.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 value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: In December, the UV index of 2 transforms into the following advice:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. To protect against the Sun's most potent rays, avoid direct exposure around midday. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Salem, MO
- Average high temperature in December: 43.5°F
The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is January (39.9°F).
- Average low temperature in December: 29.7°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure in December
Salem, MO
- Average pressure in December: 30.13"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
Salem, MO
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in December
Salem, MO
- Average humidity in December: 78%
The month with the highest relative humidity is March (79%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Salem, MO
- Average rainfall in December: 2.28"
The wettest month (with the highest rainfall) is May (4.13").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in December
Salem, MO
- Average rainfall days in December: 8.2 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in December
Salem, MO
- Average snowfall in December: 1.65"
The month with the highest snowfall is February (4.25").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Salem, MO
- Average snowfall days in December: 4.5 days
The months with the highest number of snowfall days are January and February (6.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Salem, MO
- Average daylight in December: 9h and 36min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 4h and 54min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
Salem, MO
- Average sunshine days in December: 18.2 days
The month with the most sunshine days is October (18.9 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in December
Salem, 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, February, November and December (UV index 2).
Average cloud cover in December
Salem, MO
- Average cloud cover in December: 49
The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility in December
Salem, MO
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, June, October, November and December (6mi).
The months with the lowest visibility are January, May, July, August and September (5mi).
