Maryland General Climate           

 

This page is for students who need information about Maryland Climate, including normal temperatures, precipitation, etc. for the year.

Maryland has five unique geological regions (for a map click here), and for each region a station has been chosen for normals. This is because when geology changes so does the climate. All normals are over the time period 1971-2000.

1. the Appalachian Plateaus Region............................................................................Savage River Dam (Garrett County)

Coordinates: 39°31'N / 79°08'W                                                                                    Elevation: 455.7m (1495') above sea level

 

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual

Daily Max Temp (F)

33.4

37.0

46.6

58.2

68.1

75.9

79.5

78.3

71.3

60.0

48.4

37.8

57.9

Daily Min Temp (F)

18.9

20.2

27.6

36.6

46.4

55.0

59.8

58.3

51.7

40.0

32.3

24.1

39.2

Daily Mean Temp (F)

26.2

28.6

37.1

47.4

57.3

65.5

69.7

68.3

61.5

50.0

40.4

31.0

48.6

Monthly Mean Precipitation (in)

2.89

2.47

3.28

3.38

4.24

3.67

4.19

3.37

3.48

2.81

3.00

2.74

39.52

Monthly Mean Snowfall (in)

11.2

8.7

5.1

0.8

0.0

0.0

0.0

0.0

0.0

Trace

1.6

4.8

32.2

Monthly Snow Depth (in)

4.0

4.0

2.0

Trace

0.0

0.0

0.0

0.0

0.0

Trace

Trace

1.0

 

2. the Ridge and Valley Region........................................................................................Cumberland (Allegany County)

Coordinates: 39°39'N / 78°45'W                                                                                    Elevation: 222.5m (730') above sea level

 

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual

Daily Max Temp (F)

40.0

45.0

55.1

66.8

75.9

83.5

87.3

85.7

78.7

67.4

54.8

43.8

65.3

Daily Min Temp (F)

20.5

22.7

30.2

39.0

48.5

56.9

61.6

60.1

52.9

40.4

32.3

24.6

40.8

Daily Mean Temp (F)

30.3

33.9

42.7

52.9

62.2

70.2

74.5

72.9

65.8

53.9

43.6

34.2

53.1

Monthly Mean Precipitation (in)

2.89

2.43

3.30

3.16

3.97

3.12

3.42

3.53

3.18

2.69

2.91

2.61

37.21

Monthly Mean Snowfall (in)

11.9

7.7

6.5

0.3

0.0

0.0

0.0

0.0

0.0

0.0

1.3

4.4

31.5

3. the Blue Ridge Region...............................................................................Catoctin Mountain Park (Frederick County)

Coordinates: 39°39'N / 77°29'W                                                                                    Elevation: 490.7m (1610') above sea level

 

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual

Daily Max Temp (F)

36.6

40.5

50.4

63.0

72.2

78.8

82.1

80.3

73.7

63.8

51.9

41.2

61.2

Daily Min Temp (F)

21.4

23.9

31.4

40.7

51.0

59.5

64.0

62.7

56.4

45.2

35.7

26.3

43.2

Daily Mean Temp (F)

29.0

32.2

40.9

51.9

61.6

69.2

73.1

71.5

65.1

54.5

43.8

33.8

52.2

Monthly Mean Precipitation (in)

3.95

3.33

4.32

3.96

5.14

4.61

3.82

3.92

4.91

3.89

3.87

3.44

49.16

Monthly Mean Snowfall (in)

12.8

8.7

4.6

1.1

Trace

0.0

0.0

0.0

0.0

0.2

2.0

4.1

33.5

Monthly Snow Depth (in)

3.0

4.0

1.0

Trace

0.0

0.0

0.0

0.0

0.0

Trace

Trace

1.0

 

4. the Piedmont Plateau Region........................................Baltimore/Washington International Airport (Anne Arundel County)

Coordinates: 39°10'N / 76°41'W                                                                                    Elevation: 47.5m (156') above sea level

 

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual

Daily Max Temp (F)

41.2

44.8

53.9

64.5

73.9

82.7

87.2

85.1

78.2

67.0

56.3

46.0

65.1

Daily Min Temp (F)

23.5

26.1

33.6

42.0

51.8

60.8

65.8

63.9

56.6

43.7

34.7

27.3

44.2

Daily Mean Temp (F)

32.3

35.5

43.7

53.2

62.9

71.8

76.5

74.5

67.4

55.4

45.5

36.7

54.6

Monthly Mean Precipitation (in)

3.47

3.02

3.93

3.00

3.89

3.43

3.85

3.74

3.98

3.16

3.12

3.35

41.94

Monthly Mean Snowfall (in)

7.0

6.4

2.4

0.1

0.0

0.0

0.0

0.0

0.0

0.0

0.6

1.7

18.2

Monthly Snow Depth (in)

1.0

1.0

Trace

0.0

Trace

0.0

0.0

0.0

0.0

0.0

Trace

Trace

 

5. the Atlantic Coastal Plain Regions.....................................................................................Royal Oak (Talbot County)

Coordinates: 38°43'N / 76°11'W                                                                                     Elevation: 3.0m (10') above sea level

 

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual

Daily Max Temp (F)

43.7

46.8

55.8

66.2

75.6

83.8

88.0

86.4

80.3

69.5

58.8

48.6

67.0

Daily Min Temp (F)

28.4

30.1

37.5

45.9

55.8

64.6

69.2

67.4

61.1

50.1

41.4

32.9

48.7

Daily Mean Temp (F)

36.1

38.5

46.7

56.1

65.7

74.2

78.6

76.9

70.7

59.8

50.1

40.8

57.9

Monthly Mean Precipitation (in)

4.11

3.35

4.44

3.50

4.13

3.47

4.22

4.10

3.99

3.46

3.43

3.67

45.87

Monthly Mean Snowfall (in)

5.1

4.9

1.4

0.1

0.0

0.0

0.0

0.0

0.0

0.0

0.4

1.4

13.3

Monthly Snow Depth (in)

1.0

1.0

Trace

Trace

0.0

0.0

0.0

0.0

0.0

0.0

Trace

Trace