Do you need to know, when is the best time to go to Maryland? Then you should take a look here, what weather you can expect there during the year.
Maryland is part of USA - United States of America. The climate of USA is very varied, as United States of America is a large country. The climate is mostly temperate, but tropical in Hawaii and Florida, and arctic in Alaska. This is not all. The climate is semiarid in the great plains west of the Mississippi River, and arid in the Great Basin of the southwest. You can expect low winter temperatures in the northwest, but they are sometimes moderated in January and February by warm winds. Winters in the south are warmer. Don? forget, that temperatures are usually significantly lower in mountains.
When speaking about the usual weather in this area, the information is relevant for example for these popular places: Aberdeen, Allegany County, Annapolis, Assateague Island, Baltimore, Baltimore County, Bel Air, Beltsville, Berwyn Heights, Bethesda, Boonsboro, Bowie, Braddock Heights, Brentwood, Brunswick, Cambridge, Capital Region, Catoctin Mountain Park, Central Maryland, Chesapeake Beach, Chestertown, Clinton Camp Springs, Cobb Island, Cockeysville, Colesville Burtonsville, College Park, Columbia, Crisfield, Cumberland, Deep Creek Lake, Eastern Shore, Easton, Edgewood, Ellicott City, Frederick, Frederick County, Frostburg, Gaithersburg, Garrett County, Germantown, Glen Burnie, Glenmont, Grantsville, Green Ridge State Forest, Greenbelt, Hagerstown, Hancock, Hanover, Havre de Grace, Hooper's Island, Hyattsville, Kensington, Kent Island, La Plata, La Vale, Largo, Laurel, Leonardtown, Lexington Park, Linthicum, McHenry, Middletown, Montgomery County, Mount Rainier, National Harbor, New Carrollton, Oakland, Ocean City, Olney, Owings Mills, Patapsco Valley State Park, Perryville, Pikesville, Potomac, Prince Frederick, Prince George's County, Princess Anne, Rockville, Rocky Gap State Park, Rural Montgomery County, Salisbury, Savage, Severna Park, Sharpsburg, Silver Spring, Smith Island, Snow Hill, Solomons, Southern Maryland, Sparks Glencoe, St. Mary's City, St. Michaels, Suitland, Sykesville, Takoma Park, Thurmont, Timonium, Towson, Waldorf, Washington County, Western Maryland, Westminster, Wheaton, White Marsh.
Let's look now what weather you can expect in the area around Baltimore and in many other cities. The warmest month here is July, the average maximum temperature is 34.1 ℃ (93.38 ℉). The average minimum temperature in this month is 24.1 ℃ (75.38 ℉). The coldest month here is January, the average maximum temperature is 8.1 ℃ (46.58 ℉). The average minimum temperature in this month is 0.1 ℃ (32.18 ℉). The most rainy month here is May, the average number of rainy days is 10.2. The least rainy month here is September, the average number of rainy days is 7.2. 
When travelling around Maryland, always consider the altitude of the the place as well. We should remind you, that the highest point in USA - United States of America is Denali (Mount McKinley) (6190 m) and the lowest point is Death Valley (-86 m). So there are huge differences in altitudes in this country and the weather is very different in them therefore. Keep in mind, that the temperature usually decreases by 1.2 - 1.9 ℃ (2.2 - 3.5 ℉) per 200 m (656 ft), depending on the other conditions. (And we should add, that in the very special condition named thermal inversion even the temperature may be higher in higher altitudes.)
Typical (usual) weather in Maryland in January is this: The average highest temperature in Maryland in January is 8.1 ℃ (46.58 ℉). The average lowest temperature is 0.1 ℃ (32.18 ℉). At the beginning of January you can expect higher temperatures, the average highest temperature is around 8.95 ℃ (48.11 ℉). At the end of January you can expect higher temperatures, the average highest temperature is around 8.85 ℃ (47.93 ℉). The average number of rainy days in January is 9.3. The average rainfall is 75.4 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 9:27 (hours and minutes), in the middle of the month 9:43 and at the end of the month 10:09.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Maryland in February is this: The average highest temperature in Maryland in February is 9.6 ℃ (49.28 ℉). The average lowest temperature is 1.4 ℃ (34.52 ℉). At the beginning of February you can expect lower temperatures, the average highest temperature is around 8.85 ℃ (47.93 ℉). At the end of February you can expect higher temperatures, the average highest temperature is around 12.25 ℃ (54.05 ℉). The average number of rainy days in February is 8.7. The average rainfall is 78.2 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 10:09 (hours and minutes), in the middle of the month 10:42 and at the end of the month 11:19.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.
Typical (usual) weather in Maryland in March is this: The average highest temperature in Maryland in March is 14.9 ℃ (58.82 ℉). The average lowest temperature is 4.6 ℃ (40.28 ℉). At the beginning of March you can expect lower temperatures, the average highest temperature is around 12.25 ℃ (54.05 ℉). At the end of March you can expect higher temperatures, the average highest temperature is around 18.05 ℃ (64.49 ℉). The average number of rainy days in March is 9.6. The average rainfall is 101.3 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 11:19 (hours and minutes), in the middle of the month 11:57 and at the end of the month 12:36.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Maryland in April is this: The average highest temperature in Maryland in April is 21.2 ℃ (70.16 ℉). The average lowest temperature is 10.8 ℃ (51.44 ℉). At the beginning of April you can expect lower temperatures, the average highest temperature is around 18.05 ℃ (64.49 ℉). At the end of April you can expect higher temperatures, the average highest temperature is around 24.05 ℃ (75.29 ℉). The average number of rainy days in April is 10.1. The average rainfall is 81.8 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:36 (hours and minutes), in the middle of the month 13:13 and at the end of the month 13:48.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.
Typical (usual) weather in Maryland in May is this: The average highest temperature in Maryland in May is 26.9 ℃ (80.42 ℉). The average lowest temperature is 16.5 ℃ (61.7 ℉). At the beginning of May you can expect lower temperatures, the average highest temperature is around 24.05 ℃ (75.29 ℉). At the end of May you can expect higher temperatures, the average highest temperature is around 29.65 ℃ (85.37 ℉). The average number of rainy days in May is 10.2. The average rainfall is 106.6 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 13:48 (hours and minutes), in the middle of the month 14:19 and at the end of the month 14:42.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.
Typical (usual) weather in Maryland in June is this: The average highest temperature in Maryland in June is 32.4 ℃ (90.32 ℉). The average lowest temperature is 21.7 ℃ (71.06 ℉). At the beginning of June you can expect lower temperatures, the average highest temperature is around 29.65 ℃ (85.37 ℉). At the end of June you can expect higher temperatures, the average highest temperature is around 33.25 ℃ (91.85 ℉). The average number of rainy days in June is 7.4. The average rainfall is 93.5 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 14:42 (hours and minutes), in the middle of the month 14:54 and at the end of the month 14:53.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Maryland in July is this: The average highest temperature in Maryland in July is 34.1 ℃ (93.38 ℉). The average lowest temperature is 24.1 ℃ (75.38 ℉). At the beginning of July you can expect lower temperatures, the average highest temperature is around 33.25 ℃ (91.85 ℉). At the end of July you can expect lower temperatures, the average highest temperature is around 33.3 ℃ (91.94 ℉). The average number of rainy days in July is 8.2. The average rainfall is 86.6 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 14:53 (hours and minutes), in the middle of the month 14:40 and at the end of the month 14:17.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Maryland in August is this: The average highest temperature in Maryland in August is 32.5 ℃ (90.5 ℉). The average lowest temperature is 22.5 ℃ (72.5 ℉). At the beginning of August you can expect higher temperatures, the average highest temperature is around 33.3 ℃ (91.94 ℉). At the end of August you can expect lower temperatures, the average highest temperature is around 30.5 ℃ (86.9 ℉). The average number of rainy days in August is 8.1. The average rainfall is 93.6 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 14:17 (hours and minutes), in the middle of the month 13:47 and at the end of the month 13:12.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Maryland in September is this: The average highest temperature in Maryland in September is 28.5 ℃ (83.3 ℉). The average lowest temperature is 19.1 ℃ (66.38 ℉). At the beginning of September you can expect higher temperatures, the average highest temperature is around 30.5 ℃ (86.9 ℉). At the end of September you can expect lower temperatures, the average highest temperature is around 25.3 ℃ (77.54 ℉). The average number of rainy days in September is 7.2. The average rainfall is 94.4 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 13:12 (hours and minutes), in the middle of the month 12:35 and at the end of the month 11:57.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Maryland in October is this: The average highest temperature in Maryland in October is 22.1 ℃ (71.78 ℉). The average lowest temperature is 12.3 ℃ (54.14 ℉). At the beginning of October you can expect higher temperatures, the average highest temperature is around 25.3 ℃ (77.54 ℉). At the end of October you can expect lower temperatures, the average highest temperature is around 19.15 ℃ (66.47 ℉). The average number of rainy days in October is 7.9. The average rainfall is 84.2 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 11:57 (hours and minutes), in the middle of the month 11:19 and at the end of the month 10:43.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Maryland in November is this: The average highest temperature in Maryland in November is 16.2 ℃ (61.16 ℉). The average lowest temperature is 6.7 ℃ (44.06 ℉). At the beginning of November you can expect higher temperatures, the average highest temperature is around 19.15 ℃ (66.47 ℉). At the end of November you can expect lower temperatures, the average highest temperature is around 13 ℃ (55.4 ℉). The average number of rainy days in November is 8.9. The average rainfall is 91.5 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 10:43 (hours and minutes), in the middle of the month 10:10 and at the end of the month 9:43.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Maryland in December is this: The average highest temperature in Maryland in December is 9.8 ℃ (49.64 ℉). The average lowest temperature is 1.8 ℃ (35.24 ℉). At the beginning of December you can expect higher temperatures, the average highest temperature is around 13 ℃ (55.4 ℉). At the end of December you can expect lower temperatures, the average highest temperature is around 8.95 ℃ (48.11 ℉). The average number of rainy days in December is 9. The average rainfall is 91.5 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 9:43 (hours and minutes), in the middle of the month 9:27 and at the end of the month 9:25.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.| Baltimore | temperature: - | highest temperature: 9.8 ℃ (49.64 ℉) | lowest temperature: 1.8 ℃ (35.24 ℉) | rainfall: 91.5mm | rainy days: 9 |
| Annapolis | temperature: - | highest temperature: 9.4 ℃ (48.92 ℉) | lowest temperature: 0.6 ℃ (33.08 ℉) | rainfall: 90mm | rainy days: 9.7 |