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
December's onset is marked by a clear temperature decrease, falling from a chilly 45.9°F (7.7°C) in November to a freezing cold 29.8°F (-1.2°C). Throughout December, the nighttime temperature averages to 18°F (-7.8°C).Humidity
The average relative humidity in December in Fairview Heights is 82%.Rainfall
In Fairview Heights, South Dakota, in December, during 3.7 rainfall days, 1.18" (30mm) of precipitation is typically accumulated. Throughout the year, in Fairview Heights, there are 117.9 rainfall days, and 21.93" (557mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. December is the month with the most snowfall in Fairview Heights. Snow falls for 8.1 days and accumulates 2.95" (75mm) of snow.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year in Fairview Heights.On the first day of December, sunrise is at 7:41 am and sunset at 4:56 pm. On the last day of the month, sunrise is at 8:00 am and sunset at 5:06 pm CST.
Sunshine
In December, the average sunshine in Fairview Heights is 4.7h.UV index
In Fairview Heights, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum UV index of 2 in December translates into the following recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Frequently asked questions
How cold is December in Fairview Heights?
What is the average humidity in December in Fairview Heights?
How many days does it rain in December in Fairview Heights?
When does it snow the most in Fairview Heights?
How many days does it snow in December in Fairview Heights?
What is the month with the shortest days in Fairview Heights?
How many hours of daylight does Fairview Heights have in December?
What time are sunrise and sunset in December in Fairview Heights?
How long on average sun shines in December in Fairview Heights?
How high is the UV index in December in Fairview Heights?
Average temperature in December
Fairview Heights, SD
- Average high temperature in December: 29.8°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (26.8°F).
- Average low temperature in December: 18°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).
Average pressure in December
Fairview Heights, SD
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Fairview Heights, SD
- Average wind speed in December: 10.3mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.9mph).
Average humidity in December
Fairview Heights, SD
- Average humidity in December: 82%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (64%).
Average rainfall in December
Fairview Heights, SD
- Average rainfall in December: 1.18"
The wettest month (with the highest rainfall) is May (3.78").
The driest month (with the least rainfall) is February (0.59").
Average rainfall days in December
Fairview Heights, SD
- Average rainfall days in December: 3.7 days
The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in December
Fairview Heights, SD
- Average snowfall in December: 2.95"
The month with the highest snowfall is December (2.95").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Fairview Heights, SD
- Average snowfall days in December: 8.1 days
The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Fairview Heights, SD
- Average daylight in December: 9h and 1min
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 6min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in December
Fairview Heights, SD
- Average sunshine days in December: 21.3 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (9.3 days).
Average UV index in December
Fairview Heights, SD
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Fairview Heights, SD
- Average cloud cover in December: 48
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in December
Fairview Heights, 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).
Fairview Heights, South Dakota, USA
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