December weather forecastMount Rushmore National Memorial, SD
December
Weather in December
Rounding off the year, December presents the coldest month at Mount Rushmore National Memorial with temperatures averaging 35.3°F (1.8°C) during the day and nighttime temperatures dipping to 18.1°F (-7.7°C). The blanket of snow debuts heavier than November, reaching a peak of 5.8" (147mm). Consequent to the fewer daylight hours, outdoor activities are hindered and visits to the Memorial tend to decrease. However, the beauty of the snow-covered landscape coupled with the holiday season brings a magical charm to the iconic Monument, appreciated by those who brave the winter chill.Temperature
December is the coldest month of the year in Mount Rushmore National Memorial, registering average temperatures as high as 35.2°F (1.8°C) and as low as 18.1°F (-7.7°C).Rainfall
In Mount Rushmore National Memorial, South Dakota, in December, during 4.2 rainfall days, 0.43" (11mm) of precipitation is typically accumulated. Throughout the year, in Mount Rushmore National Memorial, there are 91.5 rainfall days, and 21.57" (548mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. In December, it is snowing for 3.4 days. Throughout December, 5.79" (147mm) of snow is accumulated. Throughout the year, there are 23.1 snowfall days, and 52.4" (1331mm) of snow is accumulated.Daylight
The month with the shortest days in Mount Rushmore National Memorial is December, with an average of 9h and 0min of daylight.On the first day of December, sunrise is at 7:08 am and sunset at 4:17 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 4:26 pm MST.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Mount Rushmore National Memorial, SD
- Average high temperature in December: 35.3°F
The warmest month (with the highest average high temperature) is July (79.1°F).
The month with the lowest average high temperature is December (35.3°F).
- Average low temperature in December: 18.1°F
The month with the highest average low temperature is July (58.9°F).
The coldest month (with the lowest average low temperature) is December (18.1°F).
Average rainfall in December
Mount Rushmore National Memorial, SD
- Average rainfall in December: 0.4"
The wettest month (with the highest rainfall) is May (4.2").
The driest months (with the least rainfall) are January and December (0.4").
Average rainfall days in December
Mount Rushmore National Memorial, SD
- Average rainfall days in December: 4.2 days
The month with the highest number of rainy days is June (12.6 days).
The month with the least rainy days is December (4.2 days).
Average snowfall in December
Mount Rushmore National Memorial, SD
- Average snowfall in December: 5.8"
The month with the highest snowfall is April (10.8").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Mount Rushmore National Memorial, SD
- Average snowfall days in December: 3.4 days
The months with the highest number of snowfall days are January and March (3.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December
Mount Rushmore National Memorial, SD
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
