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
Salem witnesses a significant decrease in the average high-temperature with the arrival of December, falling from November's frosty 43°F (6.1°C) to a freezing cold 27.5°F (-2.5°C). Throughout the nights in December, Salem experiences an average low-temperature of 15.4°F (-9.2°C).Humidity
The average relative humidity in December is 85%.Rainfall
In Salem, in December, it is raining for 3.5 days, with typically 1.06" (27mm) of accumulated precipitation. In Salem, South Dakota, during the entire year, the rain falls for 118.3 days and collects up to 22.76" (578mm) of precipitation.Snowfall
Months with snowfall in Salem, South Dakota, are January through May, October through December. The month with the most snowfall in Salem is December, when snow falls for 10.1 days and typically aggregates up to 4.21" (107mm) of snow.Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year in Salem.On the first day of December, sunrise is at 7:44 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 8:03 am and sunset at 5:02 pm CST.
Sunshine
The average sunshine in December is 4.3h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Salem. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 1 in December translates into the following recommendations:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Frequently asked questions
How cold is December in Salem?
What is the average humidity in December in Salem?
How much does it rain in Salem in December?
When does it snow the most in Salem?
How many days does it snow in December in Salem?
What is the month with the shortest days in Salem?
How many hours of daylight does Salem have in December?
When are sunrise and sunset in December in Salem?
How many hours of sunshine does Salem have in December?
What are the months with the lowest UV index in Salem?
What is the UV index intensity in December in Salem?
Average temperature in December
Salem, SD
- Average high temperature in December: 27.5°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (22.8°F).
- Average low temperature in December: 15.4°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (9.3°F).
Average pressure in December
Salem, 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 (29.85"Hg).
Average wind speed in December
Salem, SD
- Average wind speed in December: 10.3mph
The windiest month (with the highest average wind speed) is April (11.4mph).
The calmest month (with the lowest average wind speed) is July (8.1mph).
Average humidity in December
Salem, SD
- Average humidity in December: 85%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (67%).
Average rainfall in December
Salem, SD
- Average rainfall in December: 1.06"
The wettest month (with the highest rainfall) is June (3.62").
The driest month (with the least rainfall) is February (0.63").
Average rainfall days in December
Salem, SD
- Average rainfall days in December: 3.5 days
The month with the highest number of rainy days is June (18.3 days).
The month with the least rainy days is February (2.6 days).
Average snowfall in December
Salem, SD
- Average snowfall in December: 4.21"
The month with the highest snowfall is December (4.21").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Salem, SD
- Average snowfall days in December: 10.1 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Salem, 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 2min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Salem, SD
- Average sunshine days in December: 20.2 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (9.2 days).
Average UV index in December
Salem, 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 and December (UV index 1).
Average cloud cover in December
Salem, SD
- Average cloud cover in December: 54
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in December
Salem, 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).
Salem, South Dakota, USA
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