December weather forecast
Lemmon, SD

Weather in December

The first month of the winter, December, is still a freezing cold month in Lemmon, South Dakota, with an average temperature ranging between min 14.4°F (-9.8°C) and max 25.9°F (-3.4°C).

Temperature

In Lemmon, the average high-temperature in December declines considerably from a wintry 41.2°F (5.1°C) in November to a subzero cold 25.9°F (-3.4°C). In Lemmon, the average low-temperature is 14.4°F (-9.8°C).

Humidity

In December, the average relative humidity is 82%.

Rainfall

In Lemmon, during 3.7 rainfall days, 0.55" (14mm) of precipitation is typically accumulated. In Lemmon, during the entire year, the rain falls for 101.3 days and collects up to 14.25" (362mm) of precipitation.

Snowfall

Months with snowfall in Lemmon are January through May, October through December. In December, in Lemmon, it is snowing for 12.5 days. Throughout December, 2.52" (64mm) of snow is accumulated. Throughout the year, there are 65.8 snowfall days, and 21.42" (544mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Lemmon, with an average of 8h and 43min of daylight.
On the first day of the month, sunrise is at 7:10 am and sunset at 4:05 pm. On the last day of December, sunrise is at 7:30 am and sunset at 4:13 pm MST.

Sunshine

In Lemmon, the average sunshine in December is 4.8h.

UV index

With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 1 in December interpret into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in December in Lemmon?

The average relative humidity in December in Lemmon is 82%.

How much does it rain in Lemmon in December?

In Lemmon, in December, during 3.7 rainfall days, 0.55" (14mm) of precipitation is typically accumulated.

How much does it snow in Lemmon in December?

In Lemmon, South Dakota, in December, during 12.5 snowfall days, 2.52" (64mm) of snow is typically accumulated.

What is the month with the shortest days in Lemmon?

December has the shortest days of the year in Lemmon, South Dakota, with an average of 8h and 43min of daylight.

What is the average length of the day in December in Lemmon?

The average day length in December is 8h and 43min.

When is the sunrise / sunset in December in Lemmon?

In December, on the first day of the month, sunrise is at 7:10 am and sunset at 4:05 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 4:13 pm MST.

How many hours of sunshine does Lemmon have in December?

In December, the average sunshine duration in Lemmon is 4.8h.

When is the lowest UV index in Lemmon?

The month with the lowest UV index is December, with an average maximum UV index of 1.

What is the UV index reading in December in Lemmon?

In Lemmon, South Dakota, the average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes a low health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Lemmon, SD

Average temperature in December - Lemmon, SD
  • Average high temperature in December: 25.9°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (25.2°F).

  • Average low temperature in December: 14.4°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 (11.7°F).

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Average pressure in December
Lemmon, SD

Average pressure in December - Lemmon, SD
  • Average pressure in December: 30.14"Hg

The month with the highest atmospheric pressure is February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed in December
Lemmon, SD

Average wind speed in December - Lemmon, SD
  • Average wind speed in December: 10.9mph

The windiest month (with the highest average wind speed) is April (11.7mph).
The calmest month (with the lowest average wind speed) is August (9.6mph).

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Average humidity in December
Lemmon, SD

Average humidity in December - Lemmon, SD
  • Average humidity in December: 82%

The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are August and September (51%).

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Average rainfall in December
Lemmon, SD

Average rainfall in December - Lemmon, SD
  • Average rainfall in December: 0.55"

The wettest month (with the highest rainfall) is June (2.28").
The driest month (with the least rainfall) is January (0.47").

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Average rainfall days in December
Lemmon, SD

Average rainfall days in December - Lemmon, SD
  • Average rainfall days in December: 3.7 days

The month with the highest number of rainy days is June (15.1 days).
The month with the least rainy days is January (2.9 days).

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Average snowfall in December
Lemmon, SD

Average snowfall in December - Lemmon, SD
  • Average snowfall in December: 2.52"

The month with the highest snowfall is February (4.53").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Lemmon, SD

Average snowfall days in December - Lemmon, SD
  • Average snowfall days in December: 12.5 days

The month with the highest number of snowfall days is February (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Lemmon, SD

Average daylight in December / Average sunshine in December - Lemmon, SD
  • Average daylight in December: 8h and 43min

The month with the longest days is June (Average daylight: 15h and 41min).
The month with the shortest days is December (Average daylight: 8h and 43min).

  • Average sunshine in December: 4h and 48min

The month with the most sunshine is August (Average sunshine: 11h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

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Average sunshine days in December
Lemmon, SD

Average sunshine days in December - Lemmon, SD
  • Average sunshine days in December: 16.9 days

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (11.7 days).

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Average UV index in December
Lemmon, SD

Average UV index in December - Lemmon, SD
  • Average UV index in December: 1

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in December
Lemmon, SD

Average cloud cover in December - Lemmon, SD
  • Average cloud cover in December: 51

The months with the most cloud cover are January and February (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 20).

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Average visibility in December
Lemmon, SD

Average visibility in December - Lemmon, 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).

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