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 start of December signals a considerable reduction in the average high-temperature, receding from a frosty 44.2°F (6.8°C) in November to a subzero cold 28.2°F (-2.1°C). Throughout December, Lennox registers a consistent average low-temperature of 16.3°F (-8.7°C).Humidity
In December, the average relative humidity in Lennox is 84%.Rainfall
In Lennox, South Dakota, in December, during 3.7 rainfall days, 0.75" (19mm) of precipitation is typically accumulated. Throughout the year, there are 111.7 rainfall days, and 17.76" (451mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Lennox, South Dakota, in December, snow falls for 8.7 days, with typically accumulated 2.52" (64mm) of snow. In Lennox, during the entire year, snow falls for 38.7 days and aggregates up to 12.76" (324mm) of snow.Daylight
The month with the shortest days in Lennox, South Dakota, is December, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 7:40 am and sunset at 4:52 pm. On the last day of December, sunrise is at 7:59 am and sunset at 5:01 pm CST.
Sunshine
In December, the average sunshine is 4.4h.UV index
In Lennox, South Dakota, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index of 2 during December leads to these instructions:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Frequently asked questions
How cold is December in Lennox?
What is the average humidity in December in Lennox?
How much does it rain in Lennox in December?
How much does it snow in Lennox in December?
What is the month with the shortest days in Lennox?
How many hours of daylight does Lennox have in December?
What time are sunrise and sunset in December in Lennox?
How long on average sun shines in December in Lennox?
How high is the UV index in December in Lennox?
Average temperature in December
Lennox, SD
- Average high temperature in December: 28.2°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (24.3°F).
- Average low temperature in December: 16.3°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in December
Lennox, SD
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Lennox, SD
- Average wind speed in December: 10mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.9mph).
Average humidity in December
Lennox, SD
- Average humidity in December: 84%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (66%).
Average rainfall in December
Lennox, SD
- Average rainfall in December: 0.75"
The wettest month (with the highest rainfall) is June (2.91").
The driest months (with the least rainfall) are January, February and November (0.47").
Average rainfall days in December
Lennox, SD
- Average rainfall days in December: 3.7 days
The months with the highest number of rainy days are May and June (16 days).
The month with the least rainy days is February (2.5 days).
Average snowfall in December
Lennox, SD
- Average snowfall in December: 2.52"
The month with the highest snowfall is February (2.64").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Lennox, SD
- Average snowfall days in December: 8.7 days
The month with the highest number of snowfall days is January (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Lennox, 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 12min).
Average sunshine days in December
Lennox, SD
- Average sunshine days in December: 19.8 days
The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is June (11.5 days).
Average UV index in December
Lennox, 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 November (UV index 1).
Average cloud cover in December
Lennox, SD
- Average cloud cover in December: 51
The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in December
Lennox, 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).
Lennox, South Dakota, USA
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