December weather forecastWallace, SD
December
Weather in December
December, the first month of the winter in Wallace, is still a freezing cold month, with an average temperature varying between 23.2°F (-4.9°C) and 11.5°F (-11.4°C).Temperature
The shift into December is characterized by a noticeable reduction in the average high-temperature, decreasing from November's cold 38.8°F (3.8°C) to a subzero cold 23.2°F (-4.9°C). In the month of December, the temperature in Wallace generally rests at an average low of 11.5°F (-11.4°C).Humidity
The average relative humidity in December is 88%.Rainfall
In December, the rain falls for 4.1 days. Throughout December, 0.98" (25mm) of precipitation is accumulated. Throughout the year, in Wallace, South Dakota, there are 112.9 rainfall days, and 22.09" (561mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Wallace. December is the month with the most snowfall in Wallace. Snow falls for 14.6 days and accumulates 4.53" (115mm) of snow.Daylight
December has the shortest days of the year, with an average of 8h and 48min of daylight.On the first day of the month, sunrise is at 7:48 am and sunset at 4:49 pm. On the last day of December, sunrise is at 8:08 am and sunset at 4:58 pm CST.
Sunshine
In Wallace, the average sunshine in December is 3.6h.UV index
The months with the lowest UV index in Wallace are January, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for ordinary individuals.Note: During December, 1 as the daily maximum UV index converts into the following advice:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Wallace, SD
- Average high temperature in December: 23.2°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (18.9°F).
- Average low temperature in December: 11.5°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (5°F).
Average pressure in December
Wallace, SD
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Wallace, SD
- Average wind speed in December: 11mph
The windiest month (with the highest average wind speed) is April (11.7mph).
The calmest month (with the lowest average wind speed) is July (8.7mph).
Average humidity in December
Wallace, SD
- Average humidity in December: 88%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is September (66%).
Average rainfall in December
Wallace, SD
- Average rainfall in December: 0.98"
The wettest month (with the highest rainfall) is July (3.58").
The driest month (with the least rainfall) is November (0.63").
Average rainfall days in December
Wallace, SD
- Average rainfall days in December: 4.1 days
The month with the highest number of rainy days is June (17.9 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in December
Wallace, SD
- Average snowfall in December: 4.53"
The month with the highest snowfall is December (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Wallace, SD
- Average snowfall days in December: 14.6 days
The month with the highest number of snowfall days is January (15.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Wallace, SD
- Average daylight in December: 8h and 48min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 3h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in December
Wallace, SD
- Average sunshine days in December: 15.2 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is June (10.4 days).
Average UV index in December
Wallace, SD
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in December
Wallace, SD
- Average cloud cover in December: 62
The month with the most cloud cover is January (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 27).
Average visibility in December
Wallace, SD
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
