| Region | Number of Dry Spells | Mean Duration of Dry Spells (days) | Longest Dry Spell (days) | Day when Longest Dry Spell Starts |
|---|---|---|---|---|
| Statewide | 47 | 5 | 17 | 4 Aug |
| Clim. Div. 1 | 46 | 5 | 18 | 22 Aug |
| Clim. Div. 2 | 47 | 5 | 19 | 12 Aug |
| Clim. Div. 3 | 46 | 5 | 19 | 13 Aug |
| Clim. Div. 4 | 46 | 5 | 19 | 19 Aug |
| Clim. Div. 5 | 47 | 5 | 19 | 29 Jul |
| Clim. Div. 6 | 47 | 5 | 19 | 20 Aug |
| Clim. Div. 7 | 48 | 5 | 18 | 2 Aug |
| Clim. Div. 8 | 47 | 4 | 14 | 23 Aug |
| Allegany | 48 | 5 | 17 | 1 Aug |
| Anne Arundel | 46 | 5 | 19 | 22 Aug |
| Baltimore | 47 | 5 | 19 | 8 Aug |
| Calvert | 46 | 5 | 18 | 23 Aug |
| Caroline | 46 | 5 | 19 | 12 Aug |
| Carroll | 48 | 5 | 18 | 10 Aug |
| Cecil | 47 | 5 | 19 | 19 Jul |
| Charles | 46 | 5 | 19 | 21 Aug |
| Dorchester | 46 | 5 | 18 | 14 Aug |
| Frederick | 47 | 5 | 19 | 9 Aug |
| Garrett | 47 | 4 | 14 | 23 Aug |
| Harford | 47 | 5 | 19 | 23 Jul |
| Howard | 47 | 5 | 19 | 14 Aug |
| Kent | 47 | 5 | 19 | 29 Jul |
| Montgomery | 46 | 5 | 19 | 13 Aug |
| Prince George's | 46 | 5 | 20 | 15 Aug |
| Queen Anne's | 47 | 5 | 19 | 31 Jul |
| Saint Mary's | 46 | 5 | 19 | 16 Aug |
| Somerset | 46 | 5 | 19 | 23 Aug |
| Talbot | 46 | 5 | 19 | 30 Jul |
| Washington | 47 | 5 | 19 | 24 Aug |
| Wicomico | 46 | 5 | 18 | 7 Aug |
| Worcester | 46 | 5 | 18 | 15 Aug |
| Baltimore City | 47 | 5 | 19 | 15 Aug |