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
In Okaton, the average high-temperature in December drops, from a chilly 46.4°F (8°C) in November, to a freezing cold 30.7°F (-0.7°C). Throughout December, the temperature falls to an average low of 18°F (-7.8°C).Humidity
The average relative humidity in December in Okaton is 79%.Rainfall
In December, in Okaton, the rain falls for 2.7 days. Throughout December, 0.71" (18mm) of precipitation is accumulated. Throughout the year, there are 95.3 rainfall days, and 13.74" (349mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In December, in Okaton, it is snowing for 6.9 days. Throughout December, 2.95" (75mm) of snow is accumulated. In Okaton, during the entire year, snow falls for 38.8 days and aggregates up to 16.1" (409mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 7:58 am and sunset at 5:07 pm. On the last day of December, in Okaton, sunrise is at 8:17 am and sunset at 5:16 pm CST.
Sunshine
In December, the average sunshine is 5.3h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index in Okaton. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 1 during December leads to these instructions:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Frequently asked questions
How cold is it in Okaton in December?
What is the average humidity in December in Okaton?
How many days does it rain in December in Okaton?
How many days does it snow in December in Okaton?
What is the month with the shortest days in Okaton?
What is the average length of the day in December in Okaton?
When are sunrise and sunset in December in Okaton?
How long on average sun shines in December in Okaton?
What is the month with the lowest UV index in Okaton?
What is the UV index reading in December in Okaton?
Average temperature in December
Okaton, SD
- Average high temperature in December: 30.7°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (29.8°F).
- Average low temperature in December: 18°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in December
Okaton, SD
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Okaton, SD
- Average wind speed in December: 10.3mph
The windiest month (with the highest average wind speed) is April (12.1mph).
The calmest month (with the lowest average wind speed) is February (10.1mph).
Average humidity in December
Okaton, SD
- Average humidity in December: 79%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is September (47%).
Average rainfall in December
Okaton, SD
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is May (2.09").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in December
Okaton, SD
- Average rainfall days in December: 2.7 days
The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is February (2.6 days).
Average snowfall in December
Okaton, SD
- Average snowfall in December: 2.95"
The month with the highest snowfall is February (3.15").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Okaton, SD
- Average snowfall days in December: 6.9 days
The month with the highest number of snowfall days is February (8.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Okaton, 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: 5h and 2min
The month with the most sunshine is August (Average sunshine: 11h and 42min).
The months with the least sunshine are January and February (Average sunshine: 5h and 12min).
Average sunshine days in December
Okaton, SD
- Average sunshine days in December: 21.1 days
The month with the most sunshine days is December (21.1 days).
The months with the least sunshine days are April and June (14.1 days).
Average UV index in December
Okaton, SD
- Average UV index in December: 1
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Okaton, SD
- Average cloud cover in December: 44
The month with the most cloud cover is January (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 18).
Average visibility in December
Okaton, 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).
Okaton, South Dakota, USA
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