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
The onset of December coincides with a reduction in the average high-temperature, falling from a cold 42.1°F (5.6°C) in November to a subzero cold 27.9°F (-2.3°C). An average minimum temperature of 16°F (-8.9°C) marks the month of December.Humidity
In December, the average relative humidity in Reva, South Dakota, is 79%.Rainfall
In Reva, South Dakota, in December, during 3.8 rainfall days, 0.59" (15mm) of precipitation is typically accumulated. In Reva, South Dakota, during the entire year, the rain falls for 103.8 days and collects up to 14.88" (378mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Reva, in December, during 10.9 snowfall days, 2.76" (70mm) of snow is typically accumulated. In Reva, during the entire year, snow falls for 62.2 days and aggregates up to 22.95" (583mm) 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 7:12 am and sunset at 4:10 pm. On the last day of December, in Reva, South Dakota, sunrise is at 7:32 am and sunset at 4:18 pm MST.
Sunshine
In December, the average sunshine is 5.2h.UV index
February and December, with an average maximum UV index of 1, are months with the lowest UV index in Reva. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: In December, a regular UV index of 1 translates into these guidelines:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Frequently asked questions
How cold is it in Reva in December?
What is the average humidity in December in Reva?
How many days does it rain in December in Reva?
How much does it snow in Reva in December?
What is the month with the shortest days in Reva?
How many hours of daylight does Reva have in December?
When are sunrise and sunset in December in Reva?
How many hours of sunshine does Reva have in December?
What are the months with the lowest UV index in Reva?
What is the UV index intensity in December in Reva?
Average temperature in December
Reva, SD
- Average high temperature in December: 27.9°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (27.3°F).
- Average low temperature in December: 16°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).
Average pressure in December
Reva, SD
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in December
Reva, SD
- Average wind speed in December: 11.2mph
The windiest months (with the highest average wind speed) are January and October (11.9mph).
The calmest month (with the lowest average wind speed) is July (9.8mph).
Average humidity in December
Reva, SD
- Average humidity in December: 79%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is August (47%).
Average rainfall in December
Reva, SD
- Average rainfall in December: 0.59"
The wettest month (with the highest rainfall) is May (2.68").
The driest months (with the least rainfall) are January and November (0.51").
Average rainfall days in December
Reva, SD
- Average rainfall days in December: 3.8 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (3.3 days).
Average snowfall in December
Reva, SD
- Average snowfall in December: 2.76"
The month with the highest snowfall is March (4.37").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Reva, SD
- Average snowfall days in December: 10.9 days
The month with the highest number of snowfall days is February (12.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Reva, SD
- Average daylight in December: 8h and 5min
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: 5h and 1min
The month with the most sunshine is August (Average sunshine: 11h and 30min).
The months with the least sunshine are January and February (Average sunshine: 5h and 0min).
Average sunshine days in December
Reva, SD
- Average sunshine days in December: 17.7 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is April (11.6 days).
Average UV index in December
Reva, SD
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in December
Reva, SD
- Average cloud cover in December: 47
The months with the most cloud cover are January and February (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in December
Reva, 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).
Reva, South Dakota, USA
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