Underwrite our website for a day! Learn how.
Join Email List
 

Normals, Means, and Extremes

The following tables provide the "normal" average weather conditions on Mount Washington for each month, averaged over the period of 1981-2010. Also included are the extreme (record) conditions recorded during the station's history, from 1933 to the present.

Note: Values on this page are subject to change without notice.

Temperatures (F)

 

Normal Monthly Average

Normal Daily Maximum Average

Normal Daily Minimum Average

Record High (Year)

Record Low (Year)

January

4.7

13.6

-4.1

48 (2013)

-47 (1934)

February

6.1

14.7

-2.4

43 (1981, 1999)

-46 (1943)

March

12.8

20.7

5.0

54 (1998, 2012)

-38 (1950)

April

23.9

30.4

17.4

60 (1976)

-20 (1995)

May

35.5

41.3

29.8

66 (1977)

-2 (1966)

June

45.0

50.4

39.5

72 (2003)

8 (1945)

July

49.1

54.1

44.0

71 (1953)

24 (2001)

August

48.1

53.3

43.0

72 (1975)

20 (1986)

September

41.6

47.1

36.1

69 (1999)

9 (1992)

October

30.2

36.4

24.0

62 (2005)

-5 (1939)

November

20.7

28.1

13.3

52 (1982)

-20 (1958)

December

10.1

18.4

1.7

47 (2001)

-46 (1933)

Annual

27.3

34.1

20.7

72 (Aug. 1975)

-47 (Jan. 1934)

 

Precipitation (Water Equivalent, Inches)

 

Normal Monthly Average

Record Max. Monthly Total (Year)

Record Min. Monthly Total (Year)

Record Maximum in 24 hours (Year)

January

6.44

18.23 (1958)

1.29 (1981)

4.85 (1986)

February

6.77

25.56 (1969)

0.98 (1980)

10.30 (1970)

March

7.67

15.98 (1977)

2.15 (1946)

6.45 (1999)

April

7.44

15.21 (1988)

2.19 (1959)

8.30 (1984)

May

8.18

19.00 (1997)

1.78 (1951)

4.60 (1967)

June

8.40

16.00 (1973)

2.43 (1979)

6.50 (1973)

July

8.77

16.59 (1996)

2.69 (1995)

7.37 (1969)

August

8.32

20.69 (1991)

2.46 (1996)

6.66 (2011)

September

8.03

15.47 (1994)

2.74 (1948)

5.38 (1985)

October

9.27

28.70 (2005)

0.75 (1947)

11.07 (1996)

November

9.85

19.56 (1983)

2.31 (1939)

6.07 (1968)

December

7.73

17.95 (1973)

1.49 (1955)

8.64 (1969)

Annual

96.87

 

 

Record Max. Yearly Average (Year)

Record Min. Yearly Average (Year)

 

130.14 (1969)

71.34 (1979)

 

Snow, Ice Pellets, Hail (Inches)

 

Normal Monthly Average

Record Maximum

Monthly Total

Record Maximum in

24 hours (year)

January

44.0

94.6 (1978)

24.0 (1978)

February

40.1

172.8 (1969)

49.3 (1969)

March

45.1

98.0 (1970)

27.4 (1969)

April

35.6

110.9 (1988)

27.2 (1988)

May

12.2

95.8 (1997)

22.2 (1967)

June

1.0

8.1 (1959)

5.1 (1988)

July

Trace

1.1 (1957)

1.1 (1957)

August

0.1

2.5 (1965)

2.5 (1965)

September

2.2

7.8 (1949)

7.7 (1986)

October

17.6

78.9 (2005)

25.7 (2005)

November

37.8

86.6 (1968)

25.0 (1968)

December

45.5

103.7 (1968)

37.5 (1968)

Annual

281.2

 

 

Record Maximum Seasonal Total (Year)

 

566.4 (1968-69)

 

Wind (MPH)

 

Normal Monthly Average Speed

Normal Monthly Average Direction

Record Peak Gust - Direction (Year)

January

46.0

W

172 - NW (1985)

February

44.1

W

166 - E (1972)

March

40.3

W

180 - W(1942)

April

34.7

W

231 - SE (1934)

May

29.1

W

164 - W (1945)

June

27.6

W

136 - NW (1941)

July

25.7

W

154 - W (1996)

August

24.0

W

142 - ENE (1954)

September

28.6

W

174 - SE (1979)

October

34.7

W

161 - W (1943)

November

40.4

W

163 - NW (1983)

December

44.9

W

178 - NW(1980)

Annual

35.0

W

231 - SE (1934)

 

Home of the World's Worst Weather
Administration: 2779 White Mountain Highway, P. O. Box 2310, North Conway, NH 03860 • Tel: 603-356-2137 • Fax: 603-356-0307 • contact us
>> OUR PARTNERS Eastern Mountain Sports Subaru Cranmore Mt Washington Auto Road Mt Washington Cog Railway Vasque EATON MWVCC
Mount Washington Observatory respects your privacy           ©2014 Mount Washington Observatory           Site Directory
Web Site Support from Zakon Group LLC