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
As November transitions into December, a clear downswing in temperatures is observed, with average highs retreating from a cold 39.2°F (4°C) to a freezing cold 22.6°F (-5.2°C). In Amherst, an average temperature of 12.2°F (-11°C) is noted during December nights.Humidity
In Amherst, South Dakota, the average relative humidity in December is 87%.Rainfall
In Amherst, during December, the rain falls for 3.9 days and regularly aggregates up to 1.02" (26mm) of precipitation. In Amherst, South Dakota, during the entire year, the rain falls for 109.5 days and collects up to 20.39" (518mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Amherst. The month with the most snowfall is December, when snow falls for 15.2 days and typically aggregates up to 4.61" (117mm) of snow.Daylight
The month with the shortest days in Amherst is December, with an average of 8h and 42min of daylight.On the first day of the month, sunrise is at 7:52 am and sunset at 4:49 pm. On the last day of December, in Amherst, South Dakota, sunrise is at 8:12 am and sunset at 4:57 pm CST.
Sunshine
In December, the average sunshine is 3.9h.UV index
The average daily maximum UV index in December in Amherst is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: During December, 2 as the daily maximum UV index converts into the following advice:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Frequently asked questions
How cold is it in Amherst in December?
What is the average humidity in December in Amherst?
How many days does it rain in December in Amherst?
What is the snowiest month in Amherst?
How much does it snow in Amherst in December?
What is the month with the shortest days in Amherst?
What is the average length of the day in December in Amherst?
When are sunrise and sunset in December in Amherst?
How long on average sun shines in December in Amherst?
How high is the UV index in December in Amherst?
Average temperature in December
Amherst, SD
- Average high temperature in December: 22.6°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (19°F).
- Average low temperature in December: 12.2°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (5.4°F).
Average pressure in December
Amherst, SD
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Amherst, SD
- Average wind speed in December: 10.3mph
The windiest month (with the highest average wind speed) is October (10.8mph).
The calmest month (with the lowest average wind speed) is July (8.1mph).
Average humidity in December
Amherst, SD
- Average humidity in December: 87%
The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are August and September (62%).
Average rainfall in December
Amherst, SD
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is June (3.62").
The driest month (with the least rainfall) is January (0.63").
Average rainfall days in December
Amherst, SD
- Average rainfall days in December: 3.9 days
The month with the highest number of rainy days is June (16.8 days).
The month with the least rainy days is February (2.4 days).
Average snowfall in December
Amherst, SD
- Average snowfall in December: 4.61"
The month with the highest snowfall is December (4.61").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Amherst, SD
- Average snowfall days in December: 15.2 days
The month with the highest number of snowfall days is January (15.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Amherst, SD
- Average daylight in December: 8h and 4min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in December: 3h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Amherst, SD
- Average sunshine days in December: 15 days
The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in December
Amherst, SD
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and November (UV index 1).
Average cloud cover in December
Amherst, SD
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in December
Amherst, SD
- Average visibility in December: 6mi
The months with the highest visibility are April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and March (5mi).
Amherst, South Dakota, USA
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