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
January is Roswell's coldest month, registering average high temperatures of 24.4°F (-4.2°C) and lows of 10.2°F (-12.1°C).Humidity
With an average relative humidity of 87%, January is the most humid month.Rainfall
In Roswell, South Dakota, during January, the rain falls for 2.6 days and regularly aggregates up to 0.31" (8mm) of precipitation. In Roswell, South Dakota, during the entire year, the rain falls for 93.2 days and collects up to 11.3" (287mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Roswell, South Dakota, in January, snow falls for 8.7 days, with typically accumulated 1.38" (35mm) of snow. Throughout the year, there are 35.3 snowfall days, and 7.17" (182mm) of snow is accumulated.Daylight
The average length of the day in January is 9h and 20min.On the first day of January, sunrise is at 8:05 am and sunset at 5:03 pm. On the last day of the month, sunrise is at 7:49 am and sunset at 5:39 pm CST.
Sunshine
With an average of 4.4h of sunshine, January has the least sunshine of the year.UV index
With an average maximum UV index of 1, January is the month with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: A daily maximum UV index of 1 in January translates into the following instructions:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
How cold is January?
What is the most humid month?
What is the average humidity in January?
How many days does it rain in January?
How many days does it snow in January?
How many hours of daylight does Roswell have in January?
What time are sunrise and sunset in January in Roswell?
What is the month with the least sunshine?
How many hours of sunshine does Roswell have in January?
What is the month with the lowest UV index?
How high is the UV index in January?
Average temperature in January
Roswell, SD
- Average high temperature in January: 24.4°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (24.4°F).
- Average low temperature in January: 10.2°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 (10.2°F).
Average pressure in January
Roswell, 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 (29.85"Hg).
Average wind speed in January
Roswell, SD
- Average wind speed in January: 10.3mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (8.6mph).
Average humidity in January
Roswell, SD
- Average humidity in January: 87%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are September and October (63%).
Average rainfall in January
Roswell, SD
- Average rainfall in January: 0.31"
The wettest month (with the highest rainfall) is May (1.65").
The driest months (with the least rainfall) are February and November (0.28").
Average rainfall days in January
Roswell, SD
- Average rainfall days in January: 2.6 days
The month with the highest number of rainy days is June (13.6 days).
The month with the least rainy days is February (1.9 days).
Average snowfall in January
Roswell, SD
- Average snowfall in January: 1.38"
The month with the highest snowfall is February (1.42").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Roswell, SD
- Average snowfall days in January: 8.7 days
The month with the highest number of snowfall days is January (8.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Roswell, SD
- Average daylight in January: 9h and 2min
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 January: 4h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in January
Roswell, SD
- Average sunshine days in January: 21.6 days
The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is June (12.8 days).
Average UV index in January
Roswell, SD
- Average UV index in January: 1
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in January
Roswell, SD
- Average cloud cover in January: 52
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 22).
Average visibility in January
Roswell, 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).
Roswell, South Dakota, USA
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