The following chart records annual temperatures (summer and winter), precipitation and snowfall—as well as the average duration of the freeze-free period—for each county in Maryland.
Average Maryland Weather by County
|
Area
|
Precipitation
|
Snowfall
|
Summer
Temperature
|
Winter
Temperature
|
Freeze-Free
Period
|
| Maryland |
45"
|
22"
|
74°F
|
36°F
|
188 days
|
| Allegany County |
37.2"
|
31.5"
|
72.6°F
|
32.8°F
|
178 days
|
| Anne Arundel County |
41.9"
|
19.8"
|
74.3°F
|
34.8°F
|
200 days
|
| Baltimore City |
43.6"
|
19.8"
|
79.3°F
|
39.0°F
|
231 days
|
| Baltimore County |
51.5"
|
23.8"
|
75.2°F
|
35.7°F
|
191 days
|
| Calvert County |
43.1"
|
19.4"
|
74.4°F
|
36.4°F
|
200 days
|
| Caroline County |
43.2"
|
18.5"
|
74.9°F
|
36.7°F
|
187 days
|
| Carroll County |
42.0"
|
35.7"
|
73.7°F
|
34.0°F
|
181 days
|
| Cecil County |
48.1"
|
13.8"
|
74.1°F
|
33.5°F
|
191 days
|
| Charles County |
44.0"
|
17.2"
|
73.9°F
|
37.6°F
|
187 days
|
| Dorchester County |
45.2"
|
13.7"
|
76.8°F
|
38.7°F
|
206 days
|
| Frederick County |
42.3"
|
22.1"
|
72.2°F
|
32.5°F
|
151 days
|
| Garrett County |
47.6"
|
85.7"
|
66.6°F
|
29.1°F
|
128 days
|
| Harford County |
49.8"
|
17.4"
|
74.8°F
|
35.3°F
|
183 days
|
| Howard County |
45.3"
|
20.9"
|
73.0°F
|
33.8°F
|
172 days
|
| Kent County |
44.8"
|
18.1"
|
75.3°F
|
35.6°F
|
209 days
|
| Montgomery County |
43.1"
|
14.3"
|
73.1°F
|
34.2°F
|
190 days
|
| Prince George's County |
43.8"
|
17.1"
|
74.7°F
|
35.1°F
|
176 days
|
| Queen Anne's County |
43.4"
|
18.3"
|
74.5°F
|
36.7°F
|
188 days
|
| St. Mary's County |
47.5"
|
17.8"
|
74.4°F
|
37.4°F
|
199 days
|
| Somerset County |
43.4"
|
11.6"
|
74.4°F
|
38.4°F
|
171 days
|
| Talbot County |
45.9"
|
14.2"
|
76.6°F
|
38.5°F
|
215 days
|
| Washington County |
39.5"
|
25.3"
|
73.0°F
|
32.2°F
|
187 days
|
| Wicomico County |
47.0"
|
11.6"
|
75.0°F
|
37.9°F
|
196 days
|
| Worcester County |
46.2"
|
13.5"
|
75.1°F
|
39.0°F
|
187 days
|
Note: Temperature and precipitation data based on 30-year averages, 1971 to 2000.
Sources: National Oceanic & Atmospheric Administration and the Maryland State Office of Climatology.
 |
Additional quality of life data for states, Maryland counties and major metro areas can be found in the Comparisons Tool. |
