National Weather Service United States Department of Commerce
 

Washington D.C.

Baltimore

Dulles

 

High

Low

High

Low

High

Low

Jan

79

1/26/1950

-14

1/1/1881

79

1/26/1950*

-7

1/22/1984*

75

1/29/1975

-18

1/22/1984

Feb

84

2/25/1930

-15

2/11/1899

83

2/25/1930

-7

2/9/1934*

79

2/25/2000*

-14

2/18/1979

Mar

93

3/23/1907

4

3/4/1873

90

3/29/1945

4

3/4/2014

89

3/30/1998*

-1

3/4/2014*

Apr

95

4/17/2002*

15

4/1/1923

94

4/25/1960*

15

4/1/1923

93

4/6/2010

17

4/1/1969

May

99

5/31/1991

33

5/11/1906

98

5/30/1991*

32

5/11/1966

97

5/29/1969

28

5/7/1970

Jun

104

6/29/2012

43

6/2/1897

105

6/29/1934

40

6/11/1972

102

6/29/2012

36

6/8/1977

Jul

106

7/20/1930

52

7/4/1933

107

7/10/1936

50

7/3/2001*

105

7/22/2011

41

7/1/1988

Aug

106

8/6/1918

49

8/29/1986*

105

8/20/1983*

45

8/30/1986

104

8/20/1983

38

8/29/1982

Sep

104

9/7/1881

36

9/23/1904

101

9/7/1881

35

9/25/1963

99

9/11/1983*

30

9/24/1974

Oct

96

10/5/1941

26

10/31/1917

97

10/5/1941

25

10/24/1969*

94

10/9/2007

15

10/24/1969

Nov

86

11/1/1974

11

11/30/1929

86

11/1/1950

12

11/30/1929

84

11/1/1982*

9

11/24/1989

Dec

79

12/7/1998

-13

12/31/1880

77

12/7/1998*

-3

12/30/1880

79

12/6/1998

-4

12/25/1989

* = value has occurred in other years. In such cases, the year listed is the most recent occurrence of the event.

-Updated Oct 2015