January weather forecastTolstoy, SD
January
Weather in January
January, the same as December, in Tolstoy, South Dakota, is another subzero cold winter month, with temperature in the range of an average low of 9.1°F (-12.7°C) and an average high of 22.6°F (-5.2°C).Temperature
Tolstoy's January weather, with an average high temperature of 22.6°F (-5.2°C) and an average low temperature of 9.1°F (-12.7°C), tends to be the coldest of the year.Humidity
The most humid month is January, with an average relative humidity of 88%.Rainfall
The month with the least rainfall in Tolstoy is January, when the rain falls for 2.8 days and typically collects 0.55" (14mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In January, in Tolstoy, it is snowing for 12.8 days. Throughout January, 3.19" (81mm) of snow is accumulated. In Tolstoy, during the entire year, snow falls for 59.7 days and aggregates up to 19.96" (507mm) of snow.Daylight
In January, the average length of the day is 9h and 13min.On the first day of January, sunrise is at 8:17 am and sunset at 5:06 pm. On the last day of the month, sunrise is at 7:59 am and sunset at 5:43 pm CST.
Sunshine
January has the least sunshine of the year, with an average of 3.9h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In January, a daily maximum UV index of 1 leads to the following instructions:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Tolstoy, SD
- Average high temperature in January: 22.6°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 (22.6°F).
- Average low temperature in January: 9.1°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (9.1°F).
Average pressure in January
Tolstoy, 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
Tolstoy, SD
- Average wind speed in January: 10.6mph
The windiest month (with the highest average wind speed) is April (11.8mph).
The calmest month (with the lowest average wind speed) is August (9.7mph).
Average humidity in January
Tolstoy, SD
- Average humidity in January: 88%
The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are August and September (56%).
Average rainfall in January
Tolstoy, SD
- Average rainfall in January: 0.55"
The wettest month (with the highest rainfall) is June (2.8").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in January
Tolstoy, SD
- Average rainfall days in January: 2.8 days
The month with the highest number of rainy days is June (14.4 days).
The month with the least rainy days is February (1.9 days).
Average snowfall in January
Tolstoy, SD
- Average snowfall in January: 3.19"
The month with the highest snowfall is February (5.04").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Tolstoy, SD
- Average snowfall days in January: 12.8 days
The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Tolstoy, SD
- Average daylight in January: 9h and 12min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in January: 3h and 54min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in January
Tolstoy, SD
- Average sunshine days in January: 16.6 days
The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is June (13.1 days).
Average UV index in January
Tolstoy, SD
- Average UV index in January: 1
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 1).
Average cloud cover in January
Tolstoy, SD
- Average cloud cover in January: 58
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are July and August (Cloud cover 22).
Average visibility in January
Tolstoy, 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).
