Normals, Means, and Extremes
Wondering what is normal weather for Mount Washington? The following tables give the average weather conditions on Mount Washington for each month, averaged over the period from 1971-2000. Also included are the extreme (record) conditions recorded during the station's history, from 1933 to the present.
| Temperature (°F) |
| |
Normal Daily Maximum |
Normal Daily Minimum |
Normal Monthly Average |
Record High (Year) |
Record Low (Year) |
|
January
|
14
|
-3.7
|
5.2
|
47 (1995)
|
-47 (1934)
|
|
February
|
14.8
|
-1.7
|
6.6
|
43 (1981,1999)
|
-46 (1943)
|
|
March
|
21.3
|
5.9
|
13.6
|
54 (1998)
|
-38 (1950)
|
|
April
|
29.4
|
16.4
|
22.9
|
60 (1976)
|
-20 (1995)
|
|
May
|
41.6
|
29.5
|
35.6
|
66 (1977)
|
-2 (1966)
|
|
June
|
50.3
|
38.5
|
44.4
|
72 (2003)
|
8 (1945)
|
|
July
|
54.1
|
43.3
|
48.7
|
71 (1953)
|
24 (2001)
|
|
August
|
53
|
42.1
|
47.6
|
72 (1975)
|
20 (1986)
|
|
September
|
46.1
|
34.6
|
40.4
|
69 (1999)
|
9 (1992)
|
|
October
|
36.4
|
24
|
30.2
|
59 (1938)
|
-5 (1939)
|
|
November
|
27.6
|
13.6
|
20.6
|
52 (1982)
|
-20 (1958)
|
|
December
|
18.5
|
1.7
|
10.1
|
47 (2001)
|
-46 (1933)
|
|
YEAR
|
33.9
|
20.4
|
27.2
|
72 (Aug. 1975)
|
-47 (Jan. 1934)
|
|
|
Precipitation (Water Equivalent, inches)
|
|
|
Normal
|
Maximum Monthly (Year)
|
Minimum Monthly (Year)
|
Maximum in 24 hours (Year)
|
|
January
|
8.52
|
18.23 (1958)
|
1.29 (1981)
|
4.85 (1986)
|
|
February
|
7.33
|
25.56 (1969)
|
0.98 (1980)
|
10.30 (1970)
|
|
March
|
9.42
|
15.98 (1977)
|
2.15 (1946)
|
6.45 (1999)
|
|
April
|
8.43
|
15.21 (1988)
|
2.19 (1959)
|
8.30 (1984)
|
|
May
|
8.21
|
19.00 (1997)
|
1.78 (1951)
|
4.60 (1967)
|
|
June
|
8.36
|
16.00 (1973)
|
2.43 (1979)
|
6.50 (1973)
|
|
July
|
8.02
|
16.585 (1996)
|
2.69 (1995)
|
7.37 (1969)
|
|
August
|
8.08
|
20.69 (1991)
|
2.46 (1996)
|
6.63 (1991)
|
|
September
|
8.55
|
15.47 (1994)
|
2.74 (1948)
|
5.38 (1985)
|
|
October
|
7.66
|
28.70 (2005)
|
0.75 (1947)
|
11.07 (1996)
|
|
November
|
10.49
|
19.56 (1983)
|
2.31 (1939)
|
6.07 (1968)
|
|
December
|
8.84
|
17.95 (1973)
|
1.49 (1955)
|
8.64 (1969)
|
|
YEAR
|
|
Maximum Yearly (Year)
|
Minimum Yearly (Year)
|
|
|
101.91
|
130.14 (1969)
|
71.34 (1979)
|
11.07 (Oct. 1996)
|
|
|
Snow, Ice Pellets, Hail (inches)
|
|
|
Record Mean
|
Maximum Monthly (Year)
|
Maximum in 24 Hours (Year)
|
|
January
|
50.4
|
94.6 (1978)
|
24.0 (1978)
|
|
February
|
48.2
|
172.8 (1969)
|
49.3 (1969)
|
|
March
|
51.0
|
98.0 (1970)
|
27.4 (1969)
|
|
April
|
40.8
|
110.9 (1988)
|
27.2 (1988)
|
|
May
|
11.3
|
95.8 (1997)
|
22.2 (1967)
|
|
June
|
1.2
|
8.1 (1959)
|
5.1 (1988)
|
|
July
|
Trace
|
1.1 (1957)
|
1.1 (1957)
|
|
August
|
0.3
|
2.5 (1965)
|
2.5 (1965)
|
|
September
|
2.2
|
7.8 (1949)
|
7.7 (1986)
|
|
October
|
14.0
|
78.9 (2005)
|
25.7 (2005)
|
|
November
|
40.4
|
86.6 (1968)
|
25.0 (1968)
|
|
December
|
55.0
|
103.7 (1968)
|
37.5 (1968)
|
|
YEAR
|
|
Maximum Season Total
|
|
|
314.8
|
566.4 (1968-69)
|
|
|
|
Wind (MPH)
|
|
|
Mean Speed
|
Normal Direction
|
Peak Gust (Year)
|
Direction
|
|
January
|
46.3
|
W
|
173 (1985)
|
NW
|
|
February
|
44.5
|
W
|
166 (1972)
|
E
|
|
March
|
41.6
|
W
|
180 (1942)
|
W
|
|
April
|
36.1
|
W
|
231 (1934)
|
SE
|
|
May
|
29.7
|
W
|
164 (1945)
|
W
|
|
June
|
27.7
|
W
|
136 (1949)
|
NW
|
|
July
|
25.3
|
W
|
154 (1996)
|
W
|
|
August
|
25.1
|
W
|
142 (1954)
|
ENE
|
|
September
|
29.1
|
W
|
174 (1979)
|
SE
|
|
October
|
33.8
|
W
|
161 (1943)
|
W
|
|
November
|
39.7
|
W
|
163 (1983)
|
NW
|
|
December
|
44.8
|
W
|
178 (1980)
|
NW
|
|
YEAR
|
35.3
|
W
|
231 (1934)
|
SE
|
|
