Maryland weather in September: Statewide normals and every place, NOAA 1991-2020
In September, Maryland's statewide normal high is 78°F and normal low 58°F; normal highs run from 72°F in Frostburg to 82°F in Snow Hill (NOAA 1991-2020 normals).
- Statewide normal high
- 78°FSeptember, 1991-2020
- Statewide normal low
- 58°FSeptember, 1991-2020
- Statewide normal precipitation
- 4.35 inSeptember
- Warmest place
- 82°Fnormal high, Snow Hill
- Coolest place
- 72°Fnormal high, Frostburg
Where is Maryland warmest and wettest in September?
Snow Hill has the warmest September afternoons (82°F) and Frostburg the coolest (72°F). Frederick gets the most precipitation (5.80 in) and Cumberland the least (3.55 in).
Statewide, September averaged 69.6°F in 2021, 68.5°F in 2022, 69.3°F in 2023, 68.4°F in 2024, 68.7°F in 2025, against a 1991-2020 normal of 68.2°F.
| Place | High | Low | Precip. | Snow |
|---|---|---|---|---|
| Baltimore | 80°F | 59°F | 4.44 | 0.0 |
| Frederick | 80°F | 59°F | 5.80 | – |
| Rockville | 78°F | 60°F | 4.01 | – |
| Hagerstown | 78°F | 59°F | 3.83 | – |
| Annapolis | 77°F | 65°F | 5.14 | – |
| Salisbury | 80°F | 60°F | 4.48 | 0.0 |
| Laurel | 80°F | 61°F | 4.70 | – |
| Beltsville | 79°F | 59°F | 4.42 | 0.0 |
| Cumberland | 79°F | 55°F | 3.55 | 0.0 |
| Oxon Hill | 80°F | 61°F | 4.37 | – |
| Aberdeen | 78°F | 59°F | 4.84 | – |
| Damascus | 76°F | 58°F | 4.76 | 0.0 |
| Glenn Dale | 79°F | 57°F | – | – |
| Stevensville | 78°F | 63°F | 4.47 | – |
| Frostburg | 72°F | 52°F | 4.21 | 0.0 |
| Ocean City | 77°F | 61°F | 3.93 | – |
| Chestertown | 78°F | 60°F | 4.90 | 0.0 |
| Smithsburg | 77°F | 54°F | – | – |
| Emmitsburg | 77°F | 55°F | 5.18 | 0.0 |
| Snow Hill | 82°F | 61°F | 5.26 | 0.0 |
| Solomons | 80°F | 65°F | – | – |
| Oakland | 74°F | 51°F | 3.69 | 0.0 |
| Mechanicsville | 77°F | 58°F | 4.87 | 0.0 |
| Upper Marlboro | 80°F | 58°F | 4.51 | 0.0 |
| Sharpsburg | 78°F | 54°F | 4.40 | – |
| Vienna | 82°F | 61°F | – | – |
| Annapolis Police Barracks | 80°F | 65°F | – | – |
| Assateague | 80°F | 64°F | 4.50 | 0.0 |
| Catoctin Mountain Park | 75°F | 58°F | 5.32 | – |
| Conowingo Dam | 79°F | 60°F | 5.05 | – |
| Cylburn | 77°F | 60°F | – | – |
| Dalecarlia Reservoir | 79°F | 59°F | 4.54 | 0.0 |
| Maryland Science Center Baltimore | 80°F | 65°F | 4.49 | – |
| Millers (4 mi NE) | 77°F | 56°F | 5.11 | 0.0 |
| National Arboretum DC | 82°F | 62°F | 4.12 | 0.0 |
| Patuxent River Naval Air Station | 79°F | 63°F | 4.15 | 0.0 |
| Royal Oak (2 mi SSW) | 80°F | 62°F | 4.18 | 0.0 |
| Savage River Dam | 73°F | 52°F | 3.75 | – |
| Sines Deep Creek | 72°F | 48°F | – | – |
| St Inigoes Webster NOLF | 79°F | 62°F | 4.34 | – |
Source: NOAA NCEI nClimDiv statewide normals; NOAA NCEI 1991-2020 monthly normals for each station.