| Region | Number of Days with Extreme Precipitation (#) | Mean Precipitation of Extreme Precipitation (in) | Maximum Precipitation (in) | Day when Maximum Precipitation Occurs |
|---|---|---|---|---|
| Statewide | 12 | 0.92 | 1.50 | 14 May |
| Clim. Div. 1 | 13 | 1.12 | 1.60 | 6 Mar |
| Clim. Div. 2 | 16 | 1.04 | 1.69 | 2 Jul |
| Clim. Div. 3 | 15 | 0.96 | 1.53 | 2 Jul |
| Clim. Div. 4 | 11 | 1.01 | 1.47 | 14 May |
| Clim. Div. 5 | 13 | 1.08 | 1.45 | 2 Jul |
| Clim. Div. 6 | 13 | 0.87 | 1.79 | 14 May |
| Clim. Div. 7 | 11 | 0.94 | 2.60 | 14 May |
| Clim. Div. 8 | 9 | 1.13 | 2.13 | 14 May |
| Allegany | 14 | 0.92 | 3.00 | 14 May |
| Anne Arundel | 13 | 1.03 | 1.47 | 14 May |
| Baltimore | 14 | 0.95 | 1.70 | 14 May |
| Calvert | 15 | 1.01 | 1.65 | 2 Jul |
| Caroline | 17 | 1.04 | 1.75 | 2 Jul |
| Carroll | 9 | 0.95 | 1.85 | 14 May |
| Cecil | 12 | 1.09 | 1.52 | 1 Aug |
| Charles | 13 | 0.93 | 1.45 | 14 May |
| Dorchester | 16 | 1.02 | 1.56 | 2 Jul |
| Frederick | 9 | 1.00 | 2.26 | 14 May |
| Garrett | 9 | 1.13 | 2.14 | 14 May |
| Harford | 13 | 1.00 | 1.53 | 14 May |
| Howard | 12 | 0.89 | 1.78 | 14 May |
| Kent | 13 | 1.05 | 1.41 | 29 May |
| Montgomery | 10 | 0.85 | 1.77 | 14 May |
| Prince George's | 12 | 0.95 | 1.46 | 14 May |
| Queen Anne's | 14 | 1.07 | 1.60 | 2 Jul |
| Saint Mary's | 16 | 1.02 | 1.64 | 2 Jul |
| Somerset | 16 | 1.04 | 1.60 | 6 Mar |
| Talbot | 15 | 1.09 | 1.90 | 2 Jul |
| Washington | 12 | 0.89 | 2.23 | 14 May |
| Wicomico | 14 | 1.08 | 1.66 | 6 Mar |
| Worcester | 15 | 1.09 | 1.56 | 6 Mar |
| Baltimore City | 14 | 0.96 | 1.68 | 14 May |