December weather forecastLeola, SD
December
Weather in December
The first month of the winter, December, is also a subzero cold month in Leola, South Dakota, with an average temperature ranging between min 11.8°F (-11.2°C) and max 23.7°F (-4.6°C).Temperature
December brings a significant decrease in the average high-temperature, moving down from an icy 39.9°F (4.4°C) in November to a subzero cold 23.7°F (-4.6°C). Leola experiences a nighttime temperature average of 11.8°F (-11.2°C) during December.Humidity
In December, the average relative humidity in Leola is 86%.Rainfall
In Leola, in December, it is raining for 2.7 days, with typically 0.59" (15mm) of accumulated precipitation. In Leola, during the entire year, the rain falls for 92.3 days and collects up to 15.28" (388mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Leola. The months with the most snowfall in Leola are January and December, with an average 2.76" (70mm) of accumulated snow.Daylight
The month with the shortest days is December, with an average of 8h and 48min of daylight.On the first day of the month, sunrise is at 7:57 am and sunset at 4:53 pm. On the last day of December, in Leola, sunrise is at 8:16 am and sunset at 5:01 pm CST.
Sunshine
The average sunshine in December in Leola is 4h.UV index
The months with the lowest UV index 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 unprotected exposure to Sun's UV rays for the average person.Note: A daily maximum UV index of 1 in December translates into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Leola, SD
- Average high temperature in December: 23.7°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (19.8°F).
- Average low temperature in December: 11.8°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (5.4°F).
Average pressure in December
Leola, 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
Leola, SD
- Average wind speed in December: 10.2mph
The windiest months (with the highest average wind speed) are April and October (10.7mph).
The calmest month (with the lowest average wind speed) is August (8.2mph).
Average humidity in December
Leola, SD
- Average humidity in December: 86%
The month with the highest relative humidity is January (89%).
The months with the lowest relative humidity are August and September (61%).
Average rainfall in December
Leola, SD
- Average rainfall in December: 0.59"
The wettest month (with the highest rainfall) is June (2.83").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in December
Leola, SD
- Average rainfall days in December: 2.7 days
The month with the highest number of rainy days is June (14.3 days).
The month with the least rainy days is January (1.7 days).
Average snowfall in December
Leola, SD
- Average snowfall in December: 2.76"
The months with the highest snowfall are January and December (2.76").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Leola, SD
- Average snowfall days in December: 11.4 days
The month with the highest number of snowfall days is February (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Leola, SD
- Average daylight in December: 8h and 48min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 4h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Leola, SD
- Average sunshine days in December: 18.5 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (13.8 days).
Average UV index in December
Leola, 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
Leola, SD
- Average cloud cover in December: 56
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in December
Leola, SD
- Average visibility in December: 6mi
The months with the highest visibility are February, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and March (5mi).
