January weather forecast
South Dakota, USA

January in South Dakota is characterized by its intense cold, typically registering as the coldest month of the entire year. Daytime temperatures often struggle to surpass the freezing point, with average highs below 32°F (0°C). Nightly lows are even more biting, frequently plummeting to 10°F (-12.2°C) across the majority of the state.

The western segment, particularly areas around the Black Hills, experiences slightly moderated temperatures due to its unique geographical influence. However, even these regions are not exempt from the frigid conditions. Moreover, January's chill is notably more pronounced than December's concluding cold and often more severe than the approaching cold in February.

Snowfall is a significant aspect of January's weather. While the plains consistently witness snow during this month, the mountainous regions, especially the Black Hills, can accumulate significant snowfall, occasionally exceeding measures seen in the neighboring months.

In terms of extremes, Usta and McIntosh stand out for their record temperatures. Although not exclusive to January, McIntosh's record of -54°F (-47.8°C) set in February 1936 is a testament to the extreme winter conditions that South Dakota can experience.

Relative to other months, January's consistent snow and cold temperatures sharply contrast the mild and wetter conditions that are typically seen in late spring months like May.

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• Sioux Falls - January »
  The months with the least rainfall in Sioux Falls are January, February and November Rain falls for 3.8 days and accumulates 0.67" (17mm) of rain. January, February and November are months with the least rain in Sioux Falls when the rain falls for 3.8 days and typically aggregates up to 0.67" (17mm) of rain.
• Rapid City - January »
  In January, in Rapid City the rain falls for 5.3 days. The months with the lowest UV index in Rapid City are January, February, November and December, with an average maximum UV index of 2.
• Aberdeen - January »
  January is the coldest month in Aberdeen with an average high-temperature of 20.7°F (-6.3°C) and an average low-temperature of 6.3°F (-14.3°C). In Aberdeen, during January, snow falls for 13 days and regularly aggregates up to 3.82" (97mm) of snow.
• Brookings - January »
  In Brookings during January, snow falls for 14.4 days and regularly aggregates up to 4.13" (105mm) of snow. In Brookings in January, it is raining for 3.2 days, with typically 0.71" (18mm) of accumulated precipitation.
• Watertown - January »
  The months with the least rainfall in Watertown are January and February Rain falls for 2.9 days and accumulates 0.59" (15mm) of rain. January and February are months with the least rain in Watertown when the rain falls for 2.9 days and typically aggregates up to 0.59" (15mm) of rain.
• Mitchell - January »
  In Mitchell in January, snow falls for 8.7 days, with typically accumulated 1.38" (35mm) of snow. January is the coldest month in Mitchell exhibiting average temperatures of 24.4°F (-4.2°C) at the peak and 10.2°F (-12.1°C) at the base.
• Yankton - January »
  January is the month when Yankton sees the average lowest temperatures, with a high of 26.8°F (-2.9°C) and a low of 12.9°F (-10.6°C). In Yankton in January, during 9.7 snowfall days, 2.6" (66mm) of snow is typically accumulated.
• Pierre - January »
  The month with the least rainfall in Pierre is January, when the rain falls for 2.7 days and typically collects 0.35" (9mm) of precipitation. In Pierre during January, snow falls for 9.8 days and regularly aggregates up to 1.97" (50mm) of snow.
• Huron - January »
  The month with the least rainfall in Huron is January, when the rain falls for 2.7 days and typically collects 0.55" (14mm) of precipitation. In Huron during January, snow falls for 9.2 days and regularly aggregates up to 3.11" (79mm) of snow.
• Spearfish - January »
  In Spearfish during January, snow falls for 9.7 days and regularly aggregates up to 3.31" (84mm) of snow. In Spearfish in January, during 3 rainfall days, 0.59" (15mm) of precipitation is typically accumulated.
• Vermillion - January »
  January and February are months with the least rain in Vermillion when the rain falls for 2.8 days and typically aggregates up to 0.63" (16mm) of rain. The months with the most snowfall in Vermillion are January and February, with an average 2.83" (72mm) of accumulated snow.
• Brandon - January »
  The months with the lowest UV index in Brandon are January, February, October through December, with an average maximum UV index of 2. In Brandon, South Dakota, in January, it is raining for 2.7 days, with typically 0.67" (17mm) of accumulated precipitation.