December weather forecastSmithwick, SD
December
Weather in December
December, the first month of the winter in Smithwick, is also a wintry month, with an average temperature fluctuating between 18.5°F (-7.5°C) and 32.4°F (0.2°C).Temperature
Smithwick, South Dakota, experiences its lowest temperatures in December, with an average peak of 32.4°F (0.2°C) and a low of 18.5°F (-7.5°C).Humidity
In December, the average relative humidity in Smithwick is 72%.Rainfall
In December, the rain falls for 3.5 days. Throughout December, 0.55" (14mm) of precipitation is accumulated. Throughout the year, there are 115.8 rainfall days, and 16.61" (422mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. In Smithwick, during December, snow falls for 8.1 days and regularly aggregates up to 3.58" (91mm) of snow. In Smithwick, during the entire year, snow falls for 49.2 days and aggregates up to 23.19" (589mm) of snow.Daylight
The month with the shortest days in Smithwick, South Dakota, is December, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 7:06 am and sunset at 4:18 pm. On the last day of December, in Smithwick, South Dakota, sunrise is at 7:25 am and sunset at 4:27 pm MST.
Sunshine
In Smithwick, South Dakota, the average sunshine in December is 6.1h.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 reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 2 during December translates into the following recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Smithwick, SD
- Average high temperature in December: 32.4°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is December (32.4°F).
- Average low temperature in December: 18.5°F
The month with the highest average low temperature is July (63.9°F).
The coldest months (with the lowest average low temperature) are February and December (18.5°F).
Average pressure in December
Smithwick, SD
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in December
Smithwick, SD
- Average wind speed in December: 9.3mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (7.8mph).
Average humidity in December
Smithwick, SD
- Average humidity in December: 72%
The month with the highest relative humidity is January (75%).
The month with the lowest relative humidity is August (47%).
Average rainfall in December
Smithwick, SD
- Average rainfall in December: 0.55"
The wettest month (with the highest rainfall) is June (2.87").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in December
Smithwick, SD
- Average rainfall days in December: 3.5 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is December (3.5 days).
Average snowfall in December
Smithwick, SD
- Average snowfall in December: 3.58"
The month with the highest snowfall is February (3.66").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Smithwick, SD
- Average snowfall days in December: 8.1 days
The month with the highest number of snowfall days is February (10.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Smithwick, SD
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 6h and 6min
The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 48min).
Average sunshine days in December
Smithwick, SD
- Average sunshine days in December: 21.4 days
The month with the most sunshine days is December (21.4 days).
The month with the least sunshine days is May (11.2 days).
Average UV index in December
Smithwick, SD
- 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
Smithwick, SD
- Average cloud cover in December: 34
The month with the most cloud cover is February (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in December
Smithwick, 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).
