Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
As Flandreau, South Dakota, transitions into December, a marked decrease in the average high-temperature is observed, dropping from a wintry 41.7°F (5.4°C) in November to a freezing cold 25.7°F (-3.5°C). Flandreau experiences an average low-temperature of 14.4°F (-9.8°C) in month of December.Humidity
The average relative humidity in December is 86%.Rainfall
In Flandreau, in December, it is raining for 3.8 days, with typically 0.98" (25mm) of accumulated precipitation. In Flandreau, during the entire year, the rain falls for 113.8 days and collects up to 20.59" (523mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. The month with the most snowfall is December, when snow falls for 11.6 days and typically aggregates up to 4.8" (122mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 7:41 am and sunset at 4:49 pm. On the last day of December, sunrise is at 8:01 am and sunset at 4:58 pm CST.
Sunshine
The average sunshine in December is 4.1h.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 minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: A daily maximum UV index of 1 in December translates into the following instructions:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. To cut down UV radiation exposure by about half, sport a wide-brim hat. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How much does it rain in December?
What is the snowiest month?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Flandreau have in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index intensity in December in Flandreau?
Average temperature in December
Flandreau, SD
- Average high temperature in December: 25.7°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (21.6°F).
- Average low temperature in December: 14.4°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (7.7°F).
Average pressure in December
Flandreau, SD
- Average pressure in December: 30.13"Hg
The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in December
Flandreau, SD
- Average wind speed in December: 10.6mph
The windiest month (with the highest average wind speed) is April (11.6mph).
The calmest month (with the lowest average wind speed) is July (8.3mph).
Average humidity in December
Flandreau, SD
- Average humidity in December: 86%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (68%).
Average rainfall in December
Flandreau, SD
- Average rainfall in December: 0.98"
The wettest month (with the highest rainfall) is June (3.15").
The driest months (with the least rainfall) are January and November (0.63").
Average rainfall days in December
Flandreau, SD
- Average rainfall days in December: 3.8 days
The month with the highest number of rainy days is June (17.6 days).
The month with the least rainy days is February (2.4 days).
Average snowfall in December
Flandreau, SD
- Average snowfall in December: 4.8"
The month with the highest snowfall is December (4.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Flandreau, SD
- Average snowfall days in December: 11.6 days
The month with the highest number of snowfall days is January (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
Flandreau, 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).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Flandreau, SD
- Average sunshine days in December: 18.4 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in December
Flandreau, 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
Flandreau, SD
- Average cloud cover in December: 56
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in December
Flandreau, SD
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Flandreau, South Dakota, USA
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