Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
With average high temperatures of 25.2°F (-3.8°C) and lows of 11.7°F (-11.3°C), January is the coldest month.Humidity
January is the most humid month in Summerville, South Dakota, with an average relative humidity of 85%.Rainfall
January is the month with the least rainfall in Summerville, South Dakota. Rain falls for 2.9 days and accumulates 0.47" (12mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Summerville, in January, snow falls for 12.8 days, with typically accumulated 2.95" (75mm) of snow. In Summerville, South Dakota, during the entire year, snow falls for 65.8 days and aggregates up to 21.42" (544mm) of snow.Daylight
The average length of the day in January in Summerville is 9h and 10min.On the first day of January, sunrise is at 7:29 am and sunset at 4:14 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 4:52 pm MST.
Sunshine
January has the least sunshine of the year in Summerville, South Dakota, with an average of 4.6h of sunshine.UV index
The average daily maximum UV index in January in Summerville is 2. 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: A maximum high daily UV index of 2 during January translates into the following directions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Frequently asked questions
What month is the coldest in Summerville?
How cold is January in Summerville?
What is the most humid month in Summerville?
What is the average humidity in January in Summerville?
What is the driest month in Summerville?
How many days does it rain in January in Summerville?
How many days does it snow in January in Summerville?
What is the average length of the day in January in Summerville?
When are sunrise and sunset in January in Summerville?
What is the month with the least sunshine in Summerville?
How many hours of sunshine does Summerville have in January?
How high is the UV index in January in Summerville?
Average temperature in January
Summerville, SD
- Average high temperature in January: 25.2°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 January: 11.7°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).
Average pressure in January
Summerville, SD
- Average pressure in January: 30.15"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).
Average wind speed in January
Summerville, SD
- Average wind speed in January: 11.4mph
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).
Average humidity in January
Summerville, SD
- Average humidity in January: 85%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are August and September (51%).
Average rainfall in January
Summerville, SD
- Average rainfall in January: 0.47"
The wettest month (with the highest rainfall) is June (2.28").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in January
Summerville, SD
- Average rainfall days in January: 2.9 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).
Average snowfall in January
Summerville, SD
- Average snowfall in January: 2.95"
The month with the highest snowfall is February (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Summerville, SD
- Average snowfall days in January: 12.8 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).
Average daylight in January /
Average sunshine in January
Summerville, SD
- Average daylight in January: 9h and 1min
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 January: 4h and 4min
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).
Average sunshine days in January
Summerville, SD
- Average sunshine days in January: 16.5 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).
Average UV index in January
Summerville, SD
- Average UV index in January: 2
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).
Average cloud cover in January
Summerville, SD
- Average cloud cover in January: 52
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).
Average visibility in January
Summerville, SD
- Average visibility in January: 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).
Summerville, South Dakota, USA
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