Regional View.
A Chilly early start to the week is Forecasted for the Northern part of the Upper Midwest, with highs in the 50s and 60s, Frost is possible in parts of Northern Wisconsin and Northern Minnesota away from Lake Superior, with Freeze condtions possible in Upper Michigan. Rain chances will spread Northeast with a front by Wednesday, Widespread heavy rainfall totals are possible in Minnesota/Wisconsin with Severe Thunderstorms possible in Iowa.
Local View
Due to a change in Wednesday forecasting model, I had to make a few chances to this forecast.
Locally, Tuesday night/Wednesday morning will start off cool. Temperatures will fall to the upper 30s in some places. Frost is still a possibility in the Northern Highlands of Washburn/Burnett Counties, People in this area should bring in plants/cover them. South of this area, clouds will move in and it will stay warm enough that frost will not form, lows in this area will be in the low to mid 40s. Wednesday may start off partly cloudy early, but things will quickly cloud over. By Wednesday afternoon, Widespread rain looks pretty likely for the entire area. Widespread rainfall up to 1″ is possible. With clouds and rain, It will very chilly, wet day. Highs will likely remain in the upper 50s, It will be on the breezy side as well, with winds up to 20MPH.
Wednesday, Frost possible North early, then showers and possible Tstorms with steady rain in the afternoon. Widespread totals up to 1″ possible, Highs in the upper 50s. Wednesday Night, A chance of showers and thunderstorms, lows in the upper 40s.
Looking Ahead Updated.
The Good news is the cold air mass I’ve been forecasting for Tuesday or Wednesday of this week is not as strong as thought with frost chances staying North, But a much cooler air mass may be moving into the area by the end of this week it now looks like Details below.
The forecast models are painting a much cooler picture then last week. The models did speed up the system that was forecast for Thursday and pushed it back into Wednesday, now it looks to be dry and cooler for Thursday. Then the models show much colder air rushing in by Friday the 17th, under a very chilly high pressure Highs could be in the low 50s. This would set up for a potential for Hard frosts or even freezes for the entire area but especially north Friday Night or Saturday night. But resent updates suggest this cold air mass may not make quite such a dive south as earlier forecasted, so things could change between now and then. Shortly after the models are picking up on increased rain chances, Tuesday the 21st the model show a low pressure weather system with heavy rain and high wind potential. Behind this the models show even colder air yet pouring in by the 24th, Things will change, but at this time, it shows the potential for Highs to be in the upper 30s! Behind this warmer air finally pushes back in by the end of the model run.