December weather forecastFlat River, MO
December
Weather in December
The first month of the winter, December, is also a frosty month in Flat River, Missouri, with an average temperature ranging between max 43.5°F (6.4°C) and min 30.4°F (-0.9°C).Temperature
Flat River, Missouri, in December demonstrates a small temperature transition, adjusting from an average high of a fresh 53.4°F (11.9°C) in November to a frosty 43.5°F (6.4°C). An average low-temperature of 30.4°F (-0.9°C) is observed during the December nights.Humidity
In December, the average relative humidity is 77%.Rainfall
In Flat River, during December, the rain falls for 7.7 days and regularly aggregates up to 2.36" (60mm) of precipitation. Throughout the year, in Flat River, there are 150.7 rainfall days, and 32.13" (816mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall. In Flat River, Missouri, in December, during 4.5 snowfall days, 1.89" (48mm) of snow is typically accumulated. In Flat River, Missouri, during the entire year, snow falls for 22.7 days and aggregates up to 9.37" (238mm) of snow.Daylight
With an average of 9h and 36min of daylight, December has the shortest days of the year in Flat River.On the first day of the month, sunrise is at 6:59 am and sunset at 4:43 pm. On the last day of December, in Flat River, Missouri, sunrise is at 7:17 am and sunset at 4:53 pm CST.
Sunshine
The average sunshine in December is 4.9h.UV index
The months with the lowest UV index in Flat River are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents 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:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. To guard against the harmful effects of the Sun, minimize exposure during midday. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Flat River, MO
- Average high temperature in December: 43.5°F
The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (39.6°F).
- Average low temperature in December: 30.4°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 (25.2°F).
Average pressure in December
Flat River, 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
Flat River, MO
- Average wind speed in December: 8.2mph
The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Flat River, MO
- Average humidity in December: 77%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (73%).
Average rainfall in December
Flat River, MO
- Average rainfall in December: 2.36"
The wettest month (with the highest rainfall) is May (3.7").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in December
Flat River, MO
- Average rainfall days in December: 7.7 days
The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is December (7.7 days).
Average snowfall in December
Flat River, MO
- Average snowfall in December: 1.89"
The month with the highest snowfall is February (2.72").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Flat River, MO
- Average snowfall days in December: 4.5 days
The month with the highest number of snowfall days is January (7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Flat River, 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 30min).
The months with the least sunshine are January and February (Average sunshine: 4h and 42min).
Average sunshine days in December
Flat River, MO
- Average sunshine days in December: 19 days
The month with the most sunshine days is October (19.4 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in December
Flat River, 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
Flat River, MO
- Average cloud cover in December: 47
The months with the most cloud cover are January and February (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 29).
Average visibility in December
Flat River, MO
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, October, November and December (6mi).
The months with the lowest visibility are May, July, August and September (5mi).
