After a very mild day on Sunday, the weather will take a direct turn toward winter on Monday. We have a few headlines, including a high wind warning for Rapid City for NW winds of 25-55 mph. Wind advisories have also been posted for much of central KELOLAND including Pierre, where winds will gust over 40mph.
Aberdeen will see gusty winds as well with a coating of snow starting Monday morning. This area of snow will also affect Sioux Falls with around one inch possible. Some blowing snow is also possible as the arctic air returns. Temperatures will be falling much of the afternoon, with readings below zero by late in the afternoon in the northeast.
The combination of cold and wind will lead to a wind chill advisory tonight for Sioux Falls, Watertown and Aberdeen. Wind chills will drop to -15 to -30. Even though the wind will be light by morning, temperatures will be very cold with a forecast of -20 in Aberdeen.
Colder weather will remain in place for a few days East River, while western KELOLAND will remain relatively warmer. For example, highs Tuesday will range from around 9 in Watertown to 45 in Rapid City. Wednesday and Thursday will remain below normal in many areas and cold air from Canada remains in place.
We do expect warmer weather at the end of the week. Highs by Saturday could climb into the 40s again in many areas, but another strong arctic front will be lurking to our north again early next week.