The table below gives the MEAN heat index forecast for days 3 through 7 at GRAND_RAPIDS_MI.
| TUE | WED | THU | FRI | SAT | |
|---|---|---|---|---|---|
| SEP 17 | SEP 18 | SEP 19 | SEP 20 | SEP 21 | |
| MEAN HEAT INDEX | 69 F | 69 F | 70 F | 71 F | 71 F |
| PROBABILITY OF MEAN HEAT INDEX EXCEEDING: | |||||
| 100 F | 0 % | 0 % | 0 % | 0 % | 0 % |
| 95 F | 0 % | 0 % | 0 % | 0 % | 0 % |
| 90 F | 0 % | 0 % | 0 % | 0 % | 0 % |
| 85 F | 0 % | 0 % | 0 % | 0 % | 0 % |
| 80 F | 0 % | 0 % | 0 % | 0 % | 1 % |
| 75 F | 1 % | 5 % | 9 % | 9 % | 17 % |
| 70 F | 32 % | 41 % | 51 % | 58 % | 61 % |