Big Delta - Allen AAF, AK
Period of Record: 1937 - present
64°00'N / 145°43'W
1268 ft. above sea level
Division HOME
Climate HOME
NCDC Normals (1971 - 2000)
Element
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
ANNUAL
Mean Temperature (°F)
-2.6
2.3
14.2
32.1
47.8
57.5
60.8
55.5
44.4
24.1
6.4
0.1
28.6
Mean Maximum Temperature (°F)
4.4
10.9
25.1
42.5
57.8
67.3
70.4
64.8
53.2
31.1
13.5
7.2
37.4
Mean Minimum Temperature (°F)
-9.6
-6.4
3.2
21.7
37.7
47.6
51.1
46.1
35.6
17
-0.8
-7.1
19.7
Mean Precipitation (in)
0.34
0.41
0.22
0.2
0.77
2.38
2.77
2.11
1.03
0.73
0.59
0.39
11.94
Mean
Snowfall (in)
5.2
6.3
3.6
2.7
1.1
0
0
0
1.9
11.9
11.2
5.8
49.7
Mean
Snow depth (in)
6
7
6
3
T
0
0
0
T
3
6
6
3
HDD
2097
1759
1576
987
536
228
144
308
620
1270
1761
2016
13302
CDD
0
0
0
0
0
1
12
12
2
0
0
0
27
Temperature Extremes (1937 - 2004)
Element
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
ANNUAL
Highest Mean (°F)
24.1
20.5
31.6
39.2
54.2
64.5
63.5
61.6
52.0
35.1
25.1
16.0
33.1
Year
1981
1997
1965
1998
1981
2004
2004
1977
1995
1969
2002
1985
1981
Lowest Mean (°F)
-24.4
-19.6
-3.8
18.9
37.2
48.9
55.3
48.3
37.1
13.1
-8.6
-22.5
23.1
Year
1971
1979
1959
1972
1964
1949
1959
1969
2004
1982
1963
1964
1956
Highest Daily Maximum (°F)
48
51
58
72
90
92
91
90
79
74
52
55
92
Date
18
1963
24
1943
18
1981
30
1979
28
1947
15
1969
4
1958
6
1994
1
1963
2
2003
6
1979
11
1985
15 Jun
1969
Lowest Daily Minimum (°F)
-63
-60
-49
-37
-1
30
32
22
-2
-39
-47
-62
-63
Date
30
1947
2
1947
15
1964
2
1944
4
1945
1
1941
1
1971
24
1948
27
1983
31
1975
27
1986
14
1946
30 Jan
1947
Precipitation Extremes (1937 - 2004)
Element
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
ANNUAL
Highest Total (in)
1.35
2.48
1.14
1.98
3.07
5.42
6.18
4.81
3.01
2.07
2.82
2.57
18.23
Year
1957
1996
1995
1948
1988
1985
1945
2000
1952
1989
1994
1955
1989
Lowest Total (in)
0
0
0
0
0.02
0.31
0.56
0.53
0.14
0
0.02
0
6.02
Year
1944
1941
1937
1976
1944
2003
1994
2001
1984
1969
1998
1969
1958
Highest 1-Day Maximum (in)
0.73
0.59
0.53
0.94
1.16
2.14
2.06
1.34
1.44
0.54
0.44
0.90
2.14
Date
19
1957
11
1996
18
1995
29
1963
28
1962
6
1943
21
1975
14
1995
10
1990
30
1952
17
1994
29
1955
6 Jun
1943
Highest Total Snowfall (in)
20.9
32.0
24.9
19.0
10.9
0
0
0
14.0
23.0
41.8
29.0
92.7
Year
1950
1996
1967
1948
1989
1981
1997
1994
1955
1994
Highest 1-Day Maximum (in)
8.5
9.1
6.4
10.0
9.3
0
0
0
8.5
10.4
9.5
10.0
10.4
Date
19
1957
11
1996
4
1950
30
1982
9
1989
14
1992
18
1981
21
1994
27
1965
18 Oct
1981
Threshold Counts (1971 - 2000)
Element
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
ANNUAL
Maximum Temperature
>= 80°F
0
0
0
0
0
1
3
1
0
0
0
0
5
Maximum Temperature
>= 32°F
2
4
11
25
31
30
31
31
30
15
3
2
213
Minimum Temperature
<= 32°F
31
28
30
25
7
0
0
1
10
28
30
31
220
Minimum Temperature
<= 0°F
19
16
14
3
0
0
0
0
0
4
15
19
90
Precipitation
>=0.01"
5
5
3
3
7
12
14
13
8
9
7
6
92
Precipitation
>=0.10"
1
2
1
1
3
7
7
6
3
3
2
1
36
Precipitation
>=0.50"
0
0
0
0
0
1
2
1
0
0
0
0
4
Precipitation
>=1.00"
0
0
0
0
0
0
0
0
0
0
0
0
1