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
Marty reaches its lowest average temperatures in January, measuring 27.3°F (-2.6°C) at the peak and 13.6°F (-10.2°C) at the lowest.Humidity
The most humid month in Marty is January, with an average relative humidity of 84%.Rainfall
In Marty, in January, during 2.9 rainfall days, 0.39" (10mm) of precipitation is typically accumulated. Throughout the year, there are 104.1 rainfall days, and 14.29" (363mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. The months with the most snowfall are January and March, with an average 1.93" (49mm) of accumulated snow.Daylight
In Marty, the average length of the day in January is 9h and 26min.On the first day of January, sunrise is at 8:04 am and sunset at 5:09 pm. On the last day of the month, sunrise is at 7:49 am and sunset at 5:44 pm CST.
Sunshine
With an average of 4.7h of sunshine, January has the least sunshine of the year.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 2 during January leads to these instructions:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month?
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?
What is the snowiest month?
How many days does it snow in January?
How many hours of daylight does Marty have in January?
When are sunrise and sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Marty have in January?
What are the months with the lowest UV index?
What is the UV index intensity in January?
Average temperature in January
Marty, SD
- Average high temperature in January: 27.3°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (27.3°F).
- Average low temperature in January: 13.6°F
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).
Average pressure in January
Marty, SD
- Average pressure in January: 30.16"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in January
Marty, SD
- Average wind speed in January: 10.4mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (8.3mph).
Average humidity in January
Marty, SD
- Average humidity in January: 84%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (62%).
Average rainfall in January
Marty, SD
- Average rainfall in January: 0.39"
The wettest month (with the highest rainfall) is May (2.72").
The driest month (with the least rainfall) is February (0.31").
Average rainfall days in January
Marty, SD
- Average rainfall days in January: 2.9 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (2.9 days).
Average snowfall in January
Marty, SD
- Average snowfall in January: 1.93"
The months with the highest snowfall are January and March (1.93").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Marty, SD
- Average snowfall days in January: 8.2 days
The month with the highest number of snowfall days is January (8.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Marty, SD
- Average daylight in January: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January: 4h and 4min
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 42min).
Average sunshine days in January
Marty, SD
- Average sunshine days in January: 20.9 days
The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in January
Marty, SD
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Marty, SD
- Average cloud cover in January: 49
The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 23).
Average visibility in January
Marty, 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).
Marty, South Dakota, USA
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