The table below gives the MEAN heat index forecast for days 3 through 7 at GRAND_RAPIDS_MI.
| THU | FRI | SAT | SUN | MON | |
|---|---|---|---|---|---|
| JUN 19 | JUN 20 | JUN 21 | JUN 22 | JUN 23 | |
| MEAN HEAT INDEX | 68 F | 71 F | 80 F | 85 F | 85 F |
| PROBABILITY OF MEAN HEAT INDEX EXCEEDING: | |||||
| 100 F | 0 % | 0 % | 0 % | 0 % | 1 % |
| 95 F | 0 % | 0 % | 1 % | 4 % | 5 % |
| 90 F | 0 % | 0 % | 7 % | 18 % | 20 % |
| 85 F | 0 % | 1 % | 23 % | 49 % | 48 % |
| 80 F | 0 % | 8 % | 50 % | 81 % | 77 % |
| 75 F | 6 % | 26 % | 77 % | 96 % | 94 % |
| 70 F | 34 % | 55 % | 93 % | 100 % | 99 % |