| Region | Number of Dry Spells | Mean Duration of Dry Spells (days) | Longest Dry Spell (days) | Day when Longest Dry Spell Starts |
|---|---|---|---|---|
| Statewide | 48 | 5 | 17 | 16 Jul |
| Clim. Div. 1 | 47 | 5 | 18 | 16 Aug |
| Clim. Div. 2 | 47 | 5 | 19 | 5 Aug |
| Clim. Div. 3 | 47 | 5 | 21 | 24 Jul |
| Clim. Div. 4 | 47 | 5 | 19 | 21 Jul |
| Clim. Div. 5 | 48 | 5 | 19 | 30 Jul |
| Clim. Div. 6 | 49 | 5 | 18 | 12 Jul |
| Clim. Div. 7 | 48 | 5 | 17 | 28 Jul |
| Clim. Div. 8 | 47 | 4 | 14 | 6 Aug |
| Allegany | 48 | 5 | 17 | 22 Jul |
| Anne Arundel | 48 | 5 | 19 | 20 Jul |
| Baltimore | 49 | 5 | 18 | 18 Jul |
| Calvert | 47 | 5 | 20 | 6 Aug |
| Caroline | 48 | 5 | 19 | 5 Aug |
| Carroll | 49 | 5 | 18 | 5 Jul |
| Cecil | 49 | 5 | 18 | 6 Aug |
| Charles | 47 | 5 | 21 | 24 Jul |
| Dorchester | 47 | 5 | 18 | 14 Aug |
| Frederick | 48 | 5 | 18 | 14 Jul |
| Garrett | 47 | 4 | 14 | 6 Aug |
| Harford | 49 | 5 | 18 | 27 Jul |
| Howard | 48 | 5 | 18 | 31 Jul |
| Kent | 48 | 5 | 18 | 2 Aug |
| Montgomery | 47 | 5 | 19 | 26 Jul |
| Prince George's | 47 | 5 | 20 | 31 Jul |
| Queen Anne's | 48 | 5 | 19 | 29 Jul |
| Saint Mary's | 47 | 5 | 19 | 26 Jul |
| Somerset | 46 | 5 | 19 | 6 Aug |
| Talbot | 48 | 5 | 20 | 27 Jul |
| Washington | 49 | 5 | 18 | 2 Aug |
| Wicomico | 47 | 5 | 18 | 5 Aug |
| Worcester | 47 | 5 | 18 | 17 Aug |
| Baltimore City | 48 | 5 | 19 | 31 Jul |