FORECAST SUMMARY: Monday, November 24, 2025 - Monday, December 1, 2025
PM-2.5: 24-hour daily average Fine Particulate concentrations will average mostly Good (Green AQI), with a few periods of Moderates (Yellow AQI) possible.
FORECAST DISCUSSION:
Quiet weather conditions start this forecast period. On Monday, dry and seasonably warm weather is in place; however, a change is in store as we move towards mid-week. This change begins as precipitation moves in Tuesday ahead of a developing storm system. Temperatures will be warm enough for the precipitation to be in the form of rain. The main weather system tracks from the Dakotas Tuesday morning to the western portion of the Upper Peninsula Wednesday morning. Cold northwest winds behind the associated cold front switch the rain to snow starting Tuesday night in the Upper Peninsula, and western portions of the area could see 12+ inches of snow from Tuesday evening into Thanksgiving morning. As this system continues moving west, strong northwest winds cause temperatures to plummet from northwest to southeast through the state. The cold northwest winds over the relatively "warm" lake waters likely produce significant accumulations of snow in the most prone northwest flow areas of the Upper Peninsula and northern Lower regions. Those traveling for the coming Thanksgiving holiday should check local weather conditions prior to heading out. Cold northwest winds continue into Friday, and lake effect snow continues as well.
Air quality levels Monday into Tuesday could reach the Moderate range, especially across southern areas, thanks to the warmer temperatures and a southerly wind flow that lingers into Wednesday. The cold northwest winds that develop from northwest to southeast from late Tuesday into Wednesday will produce Good air quality statewide by Wednesday, and good air quality readings will continue through Friday.
EXTENDED FORECAST:
Extended forecast models are showing high pressure moving over the state Saturday. This pattern change ends lake effect snow for a period of time; however, the next weather system could bring rain/snow back into the forecast starting on Sunday, lasting into Monday. Lighter winds turn southwest winds late in the forecast period. This flow could allow for Moderate fine particulate readings, especially in the more urban portions of the state.
Next Forecast update: Monday, December 1, 2025