December weather forecastExcello, MO
December
Weather in December
The first month of the winter, December, is still a cold month in Excello, Missouri, with an average temperature varying between 38.8°F (3.8°C) and 26.1°F (-3.3°C).Temperature
As Excello enters December, the average high-temperature decreases from the a cool 50.9°F (10.5°C) of November to a wintry 38.8°F (3.8°C). Excello's December nights cool down to an average low-temperature of 26.1°F (-3.3°C).Humidity
In December, the average relative humidity in Excello is 78%.Rainfall
In Excello, in December, during 5.8 rainfall days, 1.34" (34mm) of precipitation is typically accumulated. In Excello, during the entire year, the rain falls for 136.5 days and collects up to 27.36" (695mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Excello, during December, snow falls for 4.8 days and regularly aggregates up to 1.65" (42mm) of snow. In Excello, during the entire year, snow falls for 25.9 days and aggregates up to 12.76" (324mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 7:12 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 4:55 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 low health risk from exposure to the Sun's UV radiation for the ordinary person.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. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Excello, MO
- Average high temperature in December: 38.8°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in December: 26.1°F
The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in December
Excello, 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 (29.9"Hg).
Average wind speed in December
Excello, MO
- Average wind speed in December: 9.8mph
The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in December
Excello, MO
- Average humidity in December: 78%
The month with the highest relative humidity is June (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Excello, MO
- Average rainfall in December: 1.34"
The wettest month (with the highest rainfall) is May (3.46").
The driest month (with the least rainfall) is January (1.26").
Average rainfall days in December
Excello, MO
- Average rainfall days in December: 5.8 days
The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is January (5.3 days).
Average snowfall in December
Excello, MO
- Average snowfall in December: 1.65"
The month with the highest snowfall is January (4.06").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Excello, MO
- Average snowfall days in December: 4.8 days
The month with the highest number of snowfall days is January (8.6 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Excello, MO
- Average daylight in December: 9h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 4h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in December
Excello, MO
- Average sunshine days in December: 19.9 days
The month with the most sunshine days is December (19.9 days).
The month with the least sunshine days is June (11.1 days).
Average UV index in December
Excello, 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
Excello, MO
- Average cloud cover in December: 47
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in December
Excello, 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).
