Frost dates in Maryland
Across 43 NOAA stations in Maryland, the average last spring frost ranges from March 22 at Solomons to May 9 at Sines Deep Creek.
| Aberdeen Phillips Fld | April 10 | October 30 | 201 |
| Annapolis Naf | March 23 | November 20 | 241 |
| Annapolis Police Brks | March 27 | November 13 | 234 |
| Assateague | March 31 | November 15 | 228 |
| Baltimore Wash Intl Airport | April 10 | October 31 | 204 |
| Beltsville | April 10 | November 1 | 202 |
| Catoctin Mtn Park | April 14 | October 30 | 197 |
| Chestertown | April 3 | November 5 | 217 |
| Conowingo Dam | April 3 | November 6 | 217 |
| Cumberland 2 | April 15 | October 24 | 190 |
| Cylburn | April 2 | November 7 | 220 |
| Dalecarlia Rsvr | April 9 | October 31 | 202 |
| Damascus 3 Ssw | April 14 | October 29 | 196 |
| Emmitsburg 2 Se | April 22 | October 20 | 179 |
| Frederick Police Brks | April 2 | November 6 | 218 |
| Frostburg 2 | April 29 | October 18 | 171 |
| Glenn Dale Bell Stn | April 22 | October 22 | 183 |
| Hagerstown 1 E | April 11 | October 28 | 199 |
| Hagerstown Washington Co Airport | April 7 | November 4 | 209 |
| Laurel 3 W | April 5 | November 9 | 218 |
| Md Sci Ctr Baltimore | March 24 | November 21 | 244 |
| Mechanicsville 5 Ne | April 17 | October 27 | 195 |
| Millers 4 Ne | April 19 | October 25 | 188 |
| Natl Arboretum Dc | March 29 | November 8 | 224 |
| Oakland 1 Se | May 6 | October 9 | 156 |
| Ocean City Muni Airport | April 7 | November 2 | 209 |
| Oxon Hill | April 3 | November 8 | 217 |
| Patuxent River Nas | March 29 | November 15 | 230 |
| Rockville 1 Ne | April 1 | November 6 | 219 |
| Royal Oak 2 Ssw | April 1 | November 7 | 220 |
| Salisbury | April 3 | November 7 | 217 |
| Salisbury 2N | April 2 | November 10 | 222 |
| Salisbury Wicomico Rgnl Airport | April 10 | October 30 | 201 |
| Savage Rvr Dam | April 29 | October 20 | 174 |
| Sharpsburg 5 S | April 26 | October 18 | 175 |
| Sines Deep Creek | May 9 | October 11 | 155 |
| Smithsburg 2Nw | April 25 | October 19 | 176 |
| Snow Hill 4 N | April 10 | October 31 | 202 |
| Solomons | March 22 | November 26 | 248 |
| St Inigoes Webster Nolf | March 30 | November 14 | 229 |
| Stevensville 2Sw | March 29 | November 12 | 228 |
| Upper Marlboro 3 Nnw | April 9 | October 29 | 203 |
| Vienna | April 8 | November 4 | 209 |
Sources
- U.S. Annual/Seasonal Climate Normals, 1991 to 2020 (freeze probability dates by station), NOAA National Centers for Environmental Information, checked 1 November 2026
- Annual/Seasonal Normals 1991 to 2020 documentation, NOAA National Centers for Environmental Information, checked 1 November 2026
- 2024 Gazetteer Files, ZIP Code Tabulation Areas, US Census Bureau, checked 1 November 2026