December weather forecastSeymour, MO
December
Weather in December
The first month of the winter, December, is also a frosty month in Seymour, Missouri, with an average temperature fluctuating between 44.2°F (6.8°C) and 29.8°F (-1.2°C).Temperature
In the transition to December, Seymour observes a drop in the average high-temperature, moving from a cool 54.1°F (12.3°C) in November to a chilly 44.2°F (6.8°C). Seymour reports an average nighttime low-temperature of 29.8°F (-1.2°C) in December.Humidity
The average relative humidity in December is 76%.Rainfall
In Seymour, in December, it is raining for 8.5 days, with typically 2.13" (54mm) of accumulated precipitation. In Seymour, during the entire year, the rain falls for 159.6 days and collects up to 36.22" (920mm) of precipitation.Snowfall
January through May, November and December are months with snowfall. In Seymour, during December, snow falls for 3.9 days and regularly aggregates up to 1.46" (37mm) of snow. In Seymour, during the entire year, snow falls for 21.8 days and aggregates up to 10.75" (273mm) 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 the month, sunrise is at 7:06 am and sunset at 4:54 pm. On the last day of December, sunrise is at 7:24 am and sunset at 5:04 pm CST.
Sunshine
In December, the average sunshine is 5.3h.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 estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high UV index of 2 in December translates into the following recommendations:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Stay sun-safe with clothing that is both closely woven and worn loosely. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Seymour, MO
- Average high temperature in December: 44.2°F
The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (41°F).
- Average low temperature in December: 29.8°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (25.9°F).
Average pressure in December
Seymour, 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
Seymour, MO
- Average wind speed in December: 9mph
The windiest months (with the highest average wind speed) are January and March (9.5mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).
Average humidity in December
Seymour, MO
- Average humidity in December: 76%
The months with the highest relative humidity are March and May (78%).
The month with the lowest relative humidity is October (73%).
Average rainfall in December
Seymour, MO
- Average rainfall in December: 2.13"
The wettest month (with the highest rainfall) is May (4.84").
The driest month (with the least rainfall) is January (1.77").
Average rainfall days in December
Seymour, MO
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in December
Seymour, MO
- Average snowfall in December: 1.46"
The month with the highest snowfall is February (3.5").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Seymour, MO
- Average snowfall days in December: 3.9 days
The month with the highest number of snowfall days is February (6.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Seymour, MO
- Average daylight in December: 9h and 42min
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 42min).
- Average sunshine in December: 5h and 18min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The months with the least sunshine are January and February (Average sunshine: 5h and 12min).
Average sunshine days in December
Seymour, MO
- Average sunshine days in December: 19.5 days
The month with the most sunshine days is October (19.6 days).
The month with the least sunshine days is May (10.5 days).
Average UV index in December
Seymour, MO
- Average UV index in December: 2
The months with the highest UV index are 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
Seymour, MO
- Average cloud cover in December: 44
The month with the most cloud cover is March (Cloud cover 49).
The months with the least cloud cover are June and August (Cloud cover 29).
Average visibility in December
Seymour, 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).
