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
Stephan notes the coldest temperatures in January, with a high average of 23.4°F (-4.8°C) and a low of 9.1°F (-12.7°C).Humidity
January is the most humid month, with an average relative humidity of 88%.Rainfall
January is the month with the least rainfall. Rain falls for 2.4 days and accumulates 0.43" (11mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Stephan, South Dakota, during January, snow falls for 10.1 days and regularly aggregates up to 2.68" (68mm) of snow. Throughout the year, in Stephan, there are 47.1 snowfall days, and 16.06" (408mm) of snow is accumulated.Daylight
In January, the average length of the day is 9h and 19min.On the first day of January, sunrise is at 8:13 am and sunset at 5:09 pm. On the last day of the month, sunrise is at 7:56 am and sunset at 5:45 pm CST.
Sunshine
With an average of 4.1h of sunshine, January has the least sunshine of the year.UV index
The average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily high UV index of 2 in January translates into this advice:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
How cold is it in January?
What is the most humid month?
What is the average humidity in January?
What is the driest month in Stephan?
How many days does it rain in January?
How much does it snow in January?
What is the average length of the day in January?
When are sunrise and sunset in January in Stephan?
What is the month with the least sunshine in Stephan?
How many hours of sunshine does Stephan have in January?
What is the UV index reading in January?
Average temperature in January
Stephan, SD
- Average high temperature in January: 23.4°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (23.4°F).
- Average low temperature in January: 9.1°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (9.1°F).
Average pressure in January
Stephan, SD
- Average pressure in January: 30.16"Hg
The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in January
Stephan, SD
- Average wind speed in January: 10.6mph
The windiest month (with the highest average wind speed) is April (11.3mph).
The calmest month (with the lowest average wind speed) is August (8.9mph).
Average humidity in January
Stephan, SD
- Average humidity in January: 88%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is September (60%).
Average rainfall in January
Stephan, SD
- Average rainfall in January: 0.43"
The wettest month (with the highest rainfall) is July (3.07").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in January
Stephan, SD
- Average rainfall days in January: 2.4 days
The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is February (1.3 days).
Average snowfall in January
Stephan, SD
- Average snowfall in January: 2.68"
The month with the highest snowfall is February (4.21").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Stephan, SD
- Average snowfall days in January: 10.1 days
The months with the highest number of snowfall days are January and February (10.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Stephan, SD
- Average daylight in January: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in January: 4h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in January
Stephan, SD
- Average sunshine days in January: 18.8 days
The month with the most sunshine days is November (22.1 days).
The month with the least sunshine days is June (12.4 days).
Average UV index in January
Stephan, 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 February (UV index 1).
Average cloud cover in January
Stephan, SD
- Average cloud cover in January: 55
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 24).
Average visibility in January
Stephan, SD
- Average visibility in January: 5mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Stephan, South Dakota, USA
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