| Region | Number of Dry Spells | Mean Duration of Dry Spells (days) | Longest Dry Spell (days) | Day when Longest Dry Spell Starts |
|---|---|---|---|---|
| Statewide | 31 | 5 | 20 | 27 Jan |
| Clim. Div. 1 | 33 | 5 | 20 | 27 Jan |
| Clim. Div. 2 | 32 | 5 | 20 | 27 Jan |
| Clim. Div. 3 | 32 | 5 | 20 | 27 Jan |
| Clim. Div. 4 | 31 | 5 | 20 | 27 Jan |
| Clim. Div. 5 | 33 | 5 | 20 | 27 Jan |
| Clim. Div. 6 | 35 | 5 | 20 | 27 Jan |
| Clim. Div. 7 | 32 | 5 | 20 | 27 Jan |
| Clim. Div. 8 | 33 | 4 | 9 | 29 May |
| Allegany | 32 | 5 | 13 | 12 Jan |
| Anne Arundel | 31 | 5 | 20 | 27 Jan |
| Baltimore | 35 | 5 | 20 | 27 Jan |
| Calvert | 31 | 5 | 20 | 27 Jan |
| Caroline | 32 | 5 | 20 | 27 Jan |
| Carroll | 34 | 5 | 20 | 27 Jan |
| Cecil | 36 | 5 | 20 | 27 Jan |
| Charles | 31 | 5 | 20 | 27 Jan |
| Dorchester | 31 | 5 | 20 | 27 Jan |
| Frederick | 33 | 5 | 20 | 27 Jan |
| Garrett | 33 | 4 | 9 | 29 May |
| Harford | 36 | 5 | 20 | 27 Jan |
| Howard | 33 | 5 | 20 | 27 Jan |
| Kent | 33 | 5 | 20 | 27 Jan |
| Montgomery | 32 | 5 | 20 | 27 Jan |
| Prince George's | 32 | 5 | 20 | 27 Jan |
| Queen Anne's | 33 | 5 | 20 | 27 Jan |
| Saint Mary's | 32 | 5 | 20 | 27 Jan |
| Somerset | 33 | 5 | 20 | 27 Jan |
| Talbot | 31 | 5 | 20 | 27 Jan |
| Washington | 34 | 5 | 20 | 27 Jan |
| Wicomico | 32 | 5 | 20 | 27 Jan |
| Worcester | 33 | 5 | 20 | 27 Jan |
| Baltimore City | 35 | 5 | 20 | 27 Jan |