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 shift into December is marked by a considerable temperature decrease, with the average high-temperature dropping from an icy 41.2°F (5.1°C) in November to a subzero cold 25.7°F (-3.5°C). During the month of December, an average temperature of 13.6°F (-10.2°C) is noted during the nights.Humidity
The average relative humidity in December in Brookings, South Dakota, is 86%.Rainfall
In Brookings, during December, the rain falls for 5.1 days and regularly aggregates up to 1.1" (28mm) of precipitation. Throughout the year, in Brookings, there are 125.5 rainfall days, and 21.65" (550mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Brookings. In Brookings, in December, snow falls for 13.3 days, with typically accumulated 4.65" (118mm) of snow. In Brookings, South Dakota, during the entire year, snow falls for 61.5 days and aggregates up to 21.38" (543mm) of snow.Daylight
The month with the shortest days in Brookings is December, with an average of 8h and 54min of daylight.On the first day of December, sunrise is at 7:43 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 8:02 am and sunset at 4:58 pm CST.
Sunshine
The average sunshine in December is 4.2h.UV index
In December, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 2 in December translates into this advice:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. To protect against the Sun's most potent rays, avoid direct exposure around midday. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Frequently asked questions
How cold is it in Brookings in December?
What is the average humidity in December in Brookings?
How many days does it rain in December in Brookings?
How many days does it snow in December in Brookings?
What is the month with the shortest days in Brookings?
What is the average length of the day in December in Brookings?
What time are sunrise and sunset in December in Brookings?
How long on average sun shines in December in Brookings?
How high is the UV index in December in Brookings?
Average temperature in December
Brookings, SD
- Average high temperature in December: 25.7°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (20.7°F).
- Average low temperature in December: 13.6°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°F).
Average pressure in December
Brookings, 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
Brookings, SD
- Average wind speed in December: 10.7mph
The windiest month (with the highest average wind speed) is April (11.5mph).
The calmest month (with the lowest average wind speed) is July (8.4mph).
Average humidity in December
Brookings, SD
- Average humidity in December: 86%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is October (68%).
Average rainfall in December
Brookings, SD
- Average rainfall in December: 1.1"
The wettest month (with the highest rainfall) is June (3.46").
The driest month (with the least rainfall) is November (0.67").
Average rainfall days in December
Brookings, SD
- Average rainfall days in December: 5.1 days
The month with the highest number of rainy days is June (19.8 days).
The month with the least rainy days is January (3.2 days).
Average snowfall in December
Brookings, SD
- Average snowfall in December: 4.65"
The month with the highest snowfall is February (4.69").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Brookings, SD
- Average snowfall days in December: 13.3 days
The month with the highest number of snowfall days is January (14.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Brookings, SD
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Brookings, SD
- Average sunshine days in December: 16.1 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is June (8.3 days).
Average UV index in December
Brookings, SD
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Brookings, SD
- Average cloud cover in December: 56
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in December
Brookings, 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).
Brookings, South Dakota, USA
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