| Region | Number of Days with Extreme Precipitation (#) | Mean Precipitation of Extreme Precipitation (in) | Maximum Precipitation (in) | Day when Maximum Precipitation Occurs |
|---|---|---|---|---|
| Statewide | 8 | 0.97 | 1.49 | 14 May |
| Clim. Div. 1 | 11 | 1.16 | 1.60 | 6 Mar |
| Clim. Div. 2 | 9 | 1.07 | 1.41 | 12 Apr |
| Clim. Div. 3 | 11 | 0.93 | 1.41 | 14 May |
| Clim. Div. 4 | 6 | 1.01 | 1.37 | 14 May |
| Clim. Div. 5 | 9 | 1.01 | 1.34 | 29 May |
| Clim. Div. 6 | 9 | 0.92 | 1.79 | 14 May |
| Clim. Div. 7 | 7 | 1.07 | 2.54 | 14 May |
| Clim. Div. 8 | 7 | 1.10 | 2.00 | 14 May |
| Allegany | 8 | 1.06 | 2.84 | 14 May |
| Anne Arundel | 8 | 0.95 | 1.29 | 14 May |
| Baltimore | 8 | 1.01 | 1.69 | 14 May |
| Calvert | 10 | 1.00 | 1.52 | 12 Apr |
| Caroline | 9 | 1.07 | 1.46 | 10 Jan |
| Carroll | 8 | 0.94 | 1.89 | 14 May |
| Cecil | 9 | 1.09 | 1.42 | 14 May |
| Charles | 9 | 0.90 | 1.51 | 14 May |
| Dorchester | 11 | 1.03 | 1.45 | 6 Mar |
| Frederick | 8 | 0.99 | 2.23 | 14 May |
| Garrett | 7 | 1.10 | 2.01 | 14 May |
| Harford | 8 | 1.05 | 1.53 | 14 May |
| Howard | 7 | 0.95 | 1.71 | 14 May |
| Kent | 9 | 1.01 | 1.35 | 29 May |
| Montgomery | 5 | 0.96 | 1.75 | 14 May |
| Prince George's | 7 | 0.97 | 1.40 | 14 May |
| Queen Anne's | 9 | 1.01 | 1.33 | 29 May |
| Saint Mary's | 12 | 1.01 | 1.45 | 12 Apr |
| Somerset | 13 | 1.10 | 1.60 | 6 Mar |
| Talbot | 9 | 1.03 | 1.43 | 12 Apr |
| Washington | 8 | 0.98 | 2.26 | 14 May |
| Wicomico | 10 | 1.15 | 1.66 | 6 Mar |
| Worcester | 10 | 1.24 | 1.56 | 6 Mar |
| Baltimore City | 9 | 0.99 | 1.65 | 14 May |