December weather forecastSni Mills, MO
December
Weather in December
December, the first month of the winter in Sni Mills, is also an icy month, with an average temperature varying between 27.5°F (-2.5°C) and 40.8°F (4.9°C).Temperature
December ushers in a slight temperature change, with average high-temperatures reducing from November's fresh 52.5°F (11.4°C) to a wintry 40.8°F (4.9°C). The temperature in Sni Mills dips to an average of 27.5°F (-2.5°C) during December nights.Humidity
The average relative humidity in December in Sni Mills is 74%.Rainfall
In Sni Mills, during December, the rain falls for 6 days and regularly aggregates up to 1.57" (40mm) of precipitation. In Sni Mills, during the entire year, the rain falls for 134.9 days and collects up to 28.46" (723mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Sni Mills. In Sni Mills, in December, during 3.6 snowfall days, 1.14" (29mm) of snow is typically accumulated. Throughout the year, in Sni Mills, there are 20 snowfall days, and 10.28" (261mm) of snow is accumulated.Daylight
December has the shortest days of the year in Sni Mills, with an average of 9h and 30min of daylight.On the first day of December, sunrise is at 7:16 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 5:04 pm CST.
Sunshine
In December, the average sunshine in Sni Mills is 5.3h.UV index
The months with the lowest UV index in Sni Mills 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 threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In December, a regular UV index of 2 translates into these guidelines:
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. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Sni Mills, MO
- Average high temperature in December: 40.8°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in December: 27.5°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).
Average pressure in December
Sni Mills, MO
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Sni Mills, MO
- Average wind speed in December: 9.2mph
The windiest months (with the highest average wind speed) are February and March (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in December
Sni Mills, MO
- Average humidity in December: 74%
The months with the highest relative humidity are May and June (79%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Sni Mills, MO
- Average rainfall in December: 1.57"
The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is January (1.02").
Average rainfall days in December
Sni Mills, MO
- Average rainfall days in December: 6 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (5.2 days).
Average snowfall in December
Sni Mills, MO
- Average snowfall in December: 1.14"
The month with the highest snowfall is February (3.86").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Sni Mills, MO
- Average snowfall days in December: 3.6 days
The month with the highest number of snowfall days is February (6.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Sni Mills, MO
- Average daylight in December: 9h and 30min
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 30min).
- Average sunshine in December: 5h and 18min
The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in December
Sni Mills, MO
- Average sunshine days in December: 22.3 days
The month with the most sunshine days is December (22.3 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in December
Sni Mills, 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
Sni Mills, MO
- Average cloud cover in December: 42
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in December
Sni Mills, 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).
