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
Altamont, South Dakota, reaches its lowest average temperatures in January, measuring 20.5°F (-6.4°C) at the peak and 7.2°F (-13.8°C) at the lowest.Humidity
With an average relative humidity of 89%, January is the most humid month in Altamont.Rainfall
The month with the least rainfall in Altamont is January, when the rain falls for 1.7 days and typically collects 0.43" (11mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Altamont, in January, during 11.3 snowfall days, 2.72" (69mm) of snow is typically accumulated. Throughout the year, in Altamont, there are 49.9 snowfall days, and 14.02" (356mm) of snow is accumulated.Daylight
In Altamont, the average length of the day in January is 9h and 16min.On the first day of the month, sunrise is at 8:04 am and sunset at 4:56 pm. On the last day of January, in Altamont, sunrise is at 7:47 am and sunset at 5:32 pm CST.
Sunshine
The month with the least sunshine in Altamont, South Dakota, is January, with an average of 4h of sunshine.UV index
January and November, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 1 during January translates into the following directions:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year in Altamont?
How cold is January in Altamont?
What is the most humid month in Altamont?
What is the average humidity in January in Altamont?
What is the driest month in Altamont?
How many days does it rain in January in Altamont?
How many days does it snow in January in Altamont?
What is the average length of the day in January in Altamont?
What time are sunrise and sunset in January in Altamont?
What is the month with the least sunshine in Altamont?
How many hours of sunshine does Altamont have in January?
What are the months with the lowest UV index in Altamont?
What is the UV index intensity in January in Altamont?
Average temperature in January
Altamont, SD
- Average high temperature in January: 20.5°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (20.5°F).
- Average low temperature in January: 7.2°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (7.2°F).
Average pressure in January
Altamont, 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 (29.86"Hg).
Average wind speed in January
Altamont, SD
- Average wind speed in January: 10.4mph
The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is July (8mph).
Average humidity in January
Altamont, SD
- Average humidity in January: 89%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (67%).
Average rainfall in January
Altamont, SD
- Average rainfall in January: 0.43"
The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in January
Altamont, SD
- Average rainfall days in January: 1.7 days
The month with the highest number of rainy days is June (16.5 days).
The month with the least rainy days is January (1.7 days).
Average snowfall in January
Altamont, SD
- Average snowfall in January: 2.72"
The month with the highest snowfall is February (3.27").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Altamont, SD
- Average snowfall days in January: 11.3 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Altamont, 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 0min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in January
Altamont, SD
- Average sunshine days in January: 18.8 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (11.3 days).
Average UV index in January
Altamont, SD
- Average UV index in January: 1
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and November (UV index 1).
Average cloud cover in January
Altamont, SD
- Average cloud cover in January: 58
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in January
Altamont, 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).
Altamont, South Dakota, USA
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