December weather forecastSaint Onge, SD
December
Weather in December
December, the first month of the winter in Saint Onge, is still a freezing cold month, with temperature in the range of an average low of 18.5°F (-7.5°C) and an average high of 30.9°F (-0.6°C).Temperature
Saint Onge reaches its lowest average temperatures in December, measuring 30.9°F (-0.6°C) at the peak and 18.5°F (-7.5°C) at the lowest.Humidity
In Saint Onge, the average relative humidity in December is 76%.Rainfall
In December, the rain falls for 3.5 days. Throughout December, 0.71" (18mm) of precipitation is accumulated. Throughout the year, there are 99.6 rainfall days, and 15.63" (397mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. In Saint Onge, South Dakota, during December, snow falls for 9 days and regularly aggregates up to 4.09" (104mm) of snow. Throughout the year, there are 56.8 snowfall days, and 36.3" (922mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 8h and 54min of daylight.On the first day of the month, sunrise is at 7:12 am and sunset at 4:16 pm. On the last day of December, sunrise is at 7:31 am and sunset at 4:25 pm MST.
Sunshine
In December, the average sunshine is 5.8h.UV index
January, February, April, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for average individuals.Note: The daily high UV index of 2 in December translates into this advice:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Experience reduced UV exposure by about half when donning a wide-brim hat. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Saint Onge, SD
- Average high temperature in December: 30.9°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is December (30.9°F).
- Average low temperature in December: 18.5°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is February (16.2°F).
Average pressure in December
Saint Onge, SD
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in December
Saint Onge, SD
- Average wind speed in December: 9.9mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (8mph).
Average humidity in December
Saint Onge, SD
- Average humidity in December: 76%
The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (49%).
Average rainfall in December
Saint Onge, SD
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is May (2.32").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in December
Saint Onge, SD
- Average rainfall days in December: 3.5 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is February (2.9 days).
Average snowfall in December
Saint Onge, SD
- Average snowfall in December: 4.09"
The month with the highest snowfall is April (7.36").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Saint Onge, SD
- Average snowfall days in December: 9 days
The month with the highest number of snowfall days is February (11.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Saint Onge, SD
- Average daylight in December: 8h and 54min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 5h and 48min
The month with the most sunshine is August (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 42min).
Average sunshine days in December
Saint Onge, SD
- Average sunshine days in December: 19.9 days
The month with the most sunshine days is November (20.3 days).
The month with the least sunshine days is May (12.7 days).
Average UV index in December
Saint Onge, SD
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, April, November and December (UV index 2).
Average cloud cover in December
Saint Onge, SD
- Average cloud cover in December: 39
The month with the most cloud cover is February (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in December
Saint Onge, SD
- 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).
