Week of 8/30
Posted: Sun Aug 30, 2026 1:23 pm
No widespread big rains appear to be in the cards for lower Michigan for yet another week. Very patchy areas of southern & central lower Michigan did see impressive rainfall totals last night into this morning. Those seeing the most impressive totals were SW and northern Ottawa County, the Big Rapids area, and the Saginaw area down I-75 into portions of the Flint area. Some 2"+ totals were observed in these regions.
At my house, just under 0.4" fell. I wish I received triple that number, but I'm thankful for the rainfall I did receive.
There is a conditional threat of severe thunderstorms across mostly central and northern lower Michigan from Tuesday through Wednesday night. That threat could pivot into central & especially southern lower Michigan Thursday into early Friday, but confidence in the model data is currently far too low for me to place too much stock into that.
In terms of temps, the mid-Mississippi Valley into the Ohio Valley and back into the central plains is likely to see the brunt of the heat wave forecasted for the coming week, but spokes from that hot air dome will give southern & central Michigan chances at 90+ degree temps for Tuesday, Wednesday and possibly Thursday of this week.
My forecasted high temps for Detroit and for Grand Rapids:
8/30: 76, 80
8/31: 81, 85
9/1: 90, 88
9/2: 91, 89
9/3: 89, 86
9/4: 80, 81
9/5: 79, 80
9/6: 79, 80
GFS model run from 8AM this morning; first number is projected 5PM temp for Detroit and second number is projected 5PM temp for Grand Rapids:
8/30: 76, 83 (the GR temp is probably a few degrees too aggressive)
8/31: 76, 87 (the DET temp is too conservative)
9/1: 92, 85 (the GR temp is probably a few degrees too low)
9/2: 93, 87
9/3: 87, 90
9/4: 72, 80 (the DET temp is low due to rainfall)
9/5: 75, 78
9/6: 77, 75
Euro-AIFS (Artificial Intelligence Forecasting System) model run from 8AM this morning; first number is projected 2PM temp for Detroit and second number is projected 2PM temp for Grand Rapids (I was unable to obtain 5PM data from this source):
8/30: 72, 74
8/31: 79, 83
9/1: 85, 86
9/2: 88, 87
9/3: 84, 80
9/4: 80, 81
9/5: 77, 77
9/6: 77, 79
At my house, just under 0.4" fell. I wish I received triple that number, but I'm thankful for the rainfall I did receive.
There is a conditional threat of severe thunderstorms across mostly central and northern lower Michigan from Tuesday through Wednesday night. That threat could pivot into central & especially southern lower Michigan Thursday into early Friday, but confidence in the model data is currently far too low for me to place too much stock into that.
In terms of temps, the mid-Mississippi Valley into the Ohio Valley and back into the central plains is likely to see the brunt of the heat wave forecasted for the coming week, but spokes from that hot air dome will give southern & central Michigan chances at 90+ degree temps for Tuesday, Wednesday and possibly Thursday of this week.
My forecasted high temps for Detroit and for Grand Rapids:
8/30: 76, 80
8/31: 81, 85
9/1: 90, 88
9/2: 91, 89
9/3: 89, 86
9/4: 80, 81
9/5: 79, 80
9/6: 79, 80
GFS model run from 8AM this morning; first number is projected 5PM temp for Detroit and second number is projected 5PM temp for Grand Rapids:
8/30: 76, 83 (the GR temp is probably a few degrees too aggressive)
8/31: 76, 87 (the DET temp is too conservative)
9/1: 92, 85 (the GR temp is probably a few degrees too low)
9/2: 93, 87
9/3: 87, 90
9/4: 72, 80 (the DET temp is low due to rainfall)
9/5: 75, 78
9/6: 77, 75
Euro-AIFS (Artificial Intelligence Forecasting System) model run from 8AM this morning; first number is projected 2PM temp for Detroit and second number is projected 2PM temp for Grand Rapids (I was unable to obtain 5PM data from this source):
8/30: 72, 74
8/31: 79, 83
9/1: 85, 86
9/2: 88, 87
9/3: 84, 80
9/4: 80, 81
9/5: 77, 77
9/6: 77, 79
