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
Porcupine's temperature records reveal December as the coldest month, marked by average highs of 32.4°F (0.2°C) and lows of 18.7°F (-7.4°C).Humidity
The average relative humidity in December in Porcupine, South Dakota, is 76%.Rainfall
In Porcupine, in December, it is raining for 2.5 days, with typically 0.87" (22mm) of accumulated precipitation. Throughout the year, there are 86.7 rainfall days, and 13.66" (347mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall in Porcupine. In Porcupine, in December, during 8.2 snowfall days, 3.9" (99mm) of snow is typically accumulated. Throughout the year, there are 47.4 snowfall days, and 22.72" (577mm) of snow is accumulated.Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year in Porcupine, South Dakota.On the first day of December in Porcupine, South Dakota, sunrise is at 7:02 am and sunset at 4:14 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 4:24 pm MST.
Sunshine
In Porcupine, the average sunshine in December is 5.7h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 2 in December interprets into the following advice:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Frequently asked questions
What part of the year is the coldest in Porcupine?
How cold is it in Porcupine in December?
What is the average humidity in December in Porcupine?
How many days does it rain in December in Porcupine?
How much does it snow in Porcupine in December?
What is the month with the shortest days in Porcupine?
How many hours of daylight does Porcupine have in December?
When are sunrise and sunset in December in Porcupine?
How many hours of sunshine does Porcupine have in December?
When is the lowest UV index in Porcupine?
What is the UV index intensity in December in Porcupine?
Average temperature in December
Porcupine, SD
- Average high temperature in December: 32.4°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is December (32.4°F).
- Average low temperature in December: 18.7°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (18.1°F).
Average pressure in December
Porcupine, SD
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Porcupine, SD
- Average wind speed in December: 10.4mph
The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is August (10.2mph).
Average humidity in December
Porcupine, SD
- Average humidity in December: 76%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is August (48%).
Average rainfall in December
Porcupine, SD
- Average rainfall in December: 0.87"
The wettest month (with the highest rainfall) is May (2.13").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in December
Porcupine, SD
- Average rainfall days in December: 2.5 days
The month with the highest number of rainy days is May (13.1 days).
The months with the least rainy days are February and December (2.5 days).
Average snowfall in December
Porcupine, SD
- Average snowfall in December: 3.9"
The month with the highest snowfall is February (4.02").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Porcupine, SD
- Average snowfall days in December: 8.2 days
The month with the highest number of snowfall days is February (11.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Porcupine, SD
- Average daylight in December: 9h and 0min
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 0min).
- Average sunshine in December: 5h and 4min
The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).
Average sunshine days in December
Porcupine, SD
- Average sunshine days in December: 20.8 days
The month with the most sunshine days is September (22.8 days).
The month with the least sunshine days is April (13.2 days).
Average UV index in December
Porcupine, SD
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Porcupine, SD
- Average cloud cover in December: 39
The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in December
Porcupine, 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).
Porcupine, South Dakota, USA
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