Record envelope, standing records and threshold days for Cape Decision (USC00501269), Alaska, United States, with 35 years of record.
Key Facts for Cape Decision
Cape Decision (USC00501269) is a weather station in Alaska, United States at 56.00 latitude and -134.13 longitude, 15 m (49 ft) above sea level.
The station reports from 1940 to 1974, 35 years of record.
1,464 records set at Cape Decision still stand.
Records are tracked for tmax, tmin: an element needs 30 years of data to be eligible.
Cape Decision tied a daily record low maximum temperature of 11.1 C (52.0 F) on 31 August 1974.
About the Station
Location: Alaska, United States, 56.00 latitude, -134.13 longitude.
Elevation: 15 m (49 ft).
Period of record: 1940 to 1974, 35 years.
Eligible elements: tmax, tmin.
Daily Record Envelope and 2026
0 days at or beyond a record
Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Cape Decision. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Cape Decision, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
14.4 C (57.9 F)
-17.8 C (0.0 F)
n/a
n/a
Feb
13.3 C (55.9 F)
-15.6 C (3.9 F)
n/a
n/a
Mar
15.0 C (59.0 F)
-14.4 C (6.1 F)
n/a
n/a
Apr
18.3 C (64.9 F)
-6.7 C (19.9 F)
n/a
n/a
May
21.1 C (70.0 F)
-3.9 C (25.0 F)
n/a
n/a
Jun
20.6 C (69.1 F)
-1.1 C (30.0 F)
n/a
n/a
Jul
21.1 C (70.0 F)
2.2 C (36.0 F)
n/a
n/a
Aug
22.8 C (73.0 F)
2.8 C (37.0 F)
n/a
n/a
Sep
22.2 C (72.0 F)
-3.3 C (26.1 F)
n/a
n/a
Oct
17.8 C (64.0 F)
-3.9 C (25.0 F)
n/a
n/a
Nov
17.2 C (63.0 F)
-13.3 C (8.1 F)
n/a
n/a
Dec
11.7 C (53.1 F)
-17.8 C (0.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Cape Decision still stand. 1955 holds the most, with 120.
Standing records at Cape Decision by the year they were set
Year set
Standing records
1940
11
1941
63
1942
36
1943
39
1944
44
1945
46
1946
37
1947
58
1948
39
1949
50
1950
107
1951
45
1952
29
1953
30
1954
30
1955
120
1956
78
1957
19
1958
30
1959
28
1960
33
1961
26
1962
19
1963
71
1964
56
1965
32
1966
18
1967
39
1968
62
1969
29
1970
47
1971
18
1972
45
1973
19
1974
11
Wettest Day of Each Month
Oct: 102.4 mm (4.0 in)
The wettest day on record for each calendar month at Cape Decision. The most was 102.4 mm (4.0 in) on 3 October 1965.
Record daily precipitation for each month at Cape Decision
Month
Record daily precipitation (mm)
Date
Jan
74.7 mm (2.9 in)
12 January 1965
Feb
74.7 mm (2.9 in)
10 February 1943
Mar
95.5 mm (3.8 in)
13 March 1947
Apr
65.3 mm (2.6 in)
29 April 1944
May
48.5 mm (1.9 in)
12 May 1952
Jun
49.0 mm (1.9 in)
11 June 1941
Jul
63.5 mm (2.5 in)
6 July 1952
Aug
81.5 mm (3.2 in)
14 August 1953
Sep
78.5 mm (3.1 in)
3 September 1966
Oct
102.4 mm (4.0 in)
3 October 1965
Nov
102.1 mm (4.0 in)
12 November 1942
Dec
81.0 mm (3.2 in)
6 December 1964
Period of Record Coverage
1940 to 1974
Complete yearUnder 90 percent of days
35 years of record at Cape Decision, 1940 to 1974. 11 years have data for under 90 percent of days and are left out of rankings: 1940, 1941, 1942, 1943, 1946, 1947, 1949, 1962 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 21 complete years at Cape Decision, 1944 to 1971. Blue stripes are years cooler than the station's own mean of 6.3 C (43.3 F); red stripes are warmer. The coolest year was 1955, at 4.3 C (39.8 F), and the warmest was 1963, at 7.4 C (45.3 F). The strongest colour marks a difference of 2.0 C (3.6 F).
Annual mean temperature at Cape Decision as warming stripes, 1944 to 1971
Year
Annual mean temperature
Difference from the station mean
1944
7.1 C
+0.78 C
1945
6.6 C
+0.30 C
1948
6.2 C
-0.06 C
1951
5.3 C
-1.00 C
1952
6.0 C
-0.26 C
1953
6.9 C
+0.62 C
1954
5.5 C
-0.77 C
1955
4.3 C
-1.97 C
1956
4.3 C
-1.97 C
1958
7.0 C
+0.71 C
1959
7.0 C
+0.72 C
1960
7.1 C
+0.85 C
1961
7.0 C
+0.69 C
1963
7.4 C
+1.09 C
1965
6.3 C
+0.00 C
1966
6.0 C
-0.34 C
1967
6.7 C
+0.45 C
1968
6.8 C
+0.52 C
1969
6.4 C
+0.11 C
1970
6.4 C
+0.12 C
1971
5.7 C
-0.61 C
This station does not have enough complete years (30 are needed) to fit a temperature trend.
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1940 to 1974
Yearly extremes at Cape Decision: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
22.8 C (73.0 F)
1952
18.9 C (66.0 F)
35
Coldest night (TNn)
-17.8 C (0.0 F)
1950
-12.8 C (9.0 F)
35
Wettest day (Rx1day)
102.4 mm (4.0 in)
1965
57.2 mm (2.3 in)
33
Wettest five days (Rx5day)
192.5 mm (7.6 in)
1942
124.3 mm (4.9 in)
33
Longest dry spell (CDD)
28 days
1946
14 days
33
Hottest day (TXx)
The hottest day of the year at Cape Decision, 1940 to 1974. The record is 22.8 C (73.0 F) in 1952, marked on the chart; the median year is 18.9 C (66.0 F).
Hottest day (TXx) at Cape Decision by year
Year
Hottest day (TXx)
1940
11.7 C (53.1 F)
1941
20.0 C (68.0 F)
1942
21.7 C (71.1 F)
1943
16.1 C (61.0 F)
1944
21.1 C (70.0 F)
1945
16.7 C (62.1 F)
1946
20.6 C (69.1 F)
1947
20.6 C (69.1 F)
1948
19.4 C (66.9 F)
1949
19.4 C (66.9 F)
1950
21.1 C (70.0 F)
1951
17.8 C (64.0 F)
1952
22.8 C (73.0 F)
1953
18.3 C (64.9 F)
1954
16.1 C (61.0 F)
1955
19.4 C (66.9 F)
1956
18.3 C (64.9 F)
1957
22.2 C (72.0 F)
1958
18.3 C (64.9 F)
1959
20.6 C (69.1 F)
1960
20.0 C (68.0 F)
1961
17.2 C (63.0 F)
1962
18.3 C (64.9 F)
1963
21.1 C (70.0 F)
1964
17.2 C (63.0 F)
1965
21.1 C (70.0 F)
1966
18.9 C (66.0 F)
1967
21.7 C (71.1 F)
1968
19.4 C (66.9 F)
1969
17.8 C (64.0 F)
1970
18.3 C (64.9 F)
1971
16.7 C (62.1 F)
1972
15.6 C (60.1 F)
1973
17.2 C (63.0 F)
1974
16.7 C (62.1 F)
Coldest night (TNn)
The coldest night of the year at Cape Decision, 1940 to 1974. The record is -17.8 C (0.0 F) in 1950, marked on the chart; the median year is -12.8 C (9.0 F).
Coldest night (TNn) at Cape Decision by year
Year
Coldest night (TNn)
1940
-3.3 C (26.1 F)
1941
-8.3 C (17.1 F)
1942
-6.7 C (19.9 F)
1943
-12.8 C (9.0 F)
1944
-8.9 C (16.0 F)
1945
-6.7 C (19.9 F)
1946
-4.4 C (24.1 F)
1947
-16.7 C (1.9 F)
1948
-12.2 C (10.0 F)
1949
1.1 C (34.0 F)
1950
-17.8 C (0.0 F)
1951
-13.9 C (7.0 F)
1952
-13.3 C (8.1 F)
1953
-17.2 C (1.0 F)
1954
-15.6 C (3.9 F)
1955
-16.7 C (1.9 F)
1956
-15.6 C (3.9 F)
1957
-11.7 C (10.9 F)
1958
-15.0 C (5.0 F)
1959
-16.1 C (3.0 F)
1960
-3.3 C (26.1 F)
1961
-7.2 C (19.0 F)
1962
-8.9 C (16.0 F)
1963
-15.0 C (5.0 F)
1964
-17.8 C (0.0 F)
1965
-13.9 C (7.0 F)
1966
-12.2 C (10.0 F)
1967
-11.1 C (12.0 F)
1968
-14.4 C (6.1 F)
1969
-11.7 C (10.9 F)
1970
-15.0 C (5.0 F)
1971
-15.0 C (5.0 F)
1972
-12.8 C (9.0 F)
1973
-5.6 C (21.9 F)
1974
-12.2 C (10.0 F)
Wettest day (Rx1day)
The wettest day of the year at Cape Decision, 1940 to 1974. The record is 102.4 mm (4.0 in) in 1965, marked on the chart; the median year is 57.2 mm (2.3 in).
Wettest day (Rx1day) at Cape Decision by year
Year
Wettest day (Rx1day)
1940
41.4 mm (1.6 in)
1941
49.0 mm (1.9 in)
1942
102.1 mm (4.0 in)
1943
74.7 mm (2.9 in)
1944
98.6 mm (3.9 in)
1945
57.4 mm (2.3 in)
1946
30.5 mm (1.2 in)
1947
95.5 mm (3.8 in)
1948
51.8 mm (2.0 in)
1949
44.7 mm (1.8 in)
1950
76.2 mm (3.0 in)
1951
37.6 mm (1.5 in)
1952
63.5 mm (2.5 in)
1953
81.5 mm (3.2 in)
1954
45.7 mm (1.8 in)
1955
42.9 mm (1.7 in)
1956
50.8 mm (2.0 in)
1957
56.6 mm (2.2 in)
1958
68.3 mm (2.7 in)
1959
50.8 mm (2.0 in)
1960
67.6 mm (2.7 in)
1961
57.2 mm (2.3 in)
1962
55.9 mm (2.2 in)
1963
61.5 mm (2.4 in)
1964
81.0 mm (3.2 in)
1965
102.4 mm (4.0 in)
1966
78.5 mm (3.1 in)
1967
54.6 mm (2.1 in)
1968
n/a
1969
n/a
1970
59.9 mm (2.4 in)
1971
41.4 mm (1.6 in)
1972
42.9 mm (1.7 in)
1973
73.7 mm (2.9 in)
1974
47.5 mm (1.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at Cape Decision, 1940 to 1974. The record is 192.5 mm (7.6 in) in 1942, marked on the chart; the median year is 124.3 mm (4.9 in).
Wettest five days (Rx5day) at Cape Decision by year
Year
Wettest five days (Rx5day)
1940
113.5 mm (4.5 in)
1941
132.6 mm (5.2 in)
1942
192.5 mm (7.6 in)
1943
166.9 mm (6.6 in)
1944
171.7 mm (6.8 in)
1945
154.7 mm (6.1 in)
1946
66.4 mm (2.6 in)
1947
160.8 mm (6.3 in)
1948
167.1 mm (6.6 in)
1949
118.1 mm (4.6 in)
1950
135.8 mm (5.3 in)
1951
115.1 mm (4.5 in)
1952
112.5 mm (4.4 in)
1953
138.8 mm (5.5 in)
1954
126.8 mm (5.0 in)
1955
102.3 mm (4.0 in)
1956
114.3 mm (4.5 in)
1957
98.6 mm (3.9 in)
1958
139.7 mm (5.5 in)
1959
98.9 mm (3.9 in)
1960
118.7 mm (4.7 in)
1961
123.0 mm (4.8 in)
1962
124.3 mm (4.9 in)
1963
129.1 mm (5.1 in)
1964
190.7 mm (7.5 in)
1965
175.5 mm (6.9 in)
1966
126.3 mm (5.0 in)
1967
101.1 mm (4.0 in)
1968
n/a
1969
n/a
1970
115.6 mm (4.6 in)
1971
81.6 mm (3.2 in)
1972
93.5 mm (3.7 in)
1973
129.1 mm (5.1 in)
1974
117.0 mm (4.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Cape Decision, 1940 to 1974. The record is 28 days in 1946, marked on the chart; the median year is 14 days.
Longest dry spell (CDD) at Cape Decision by year
Year
Longest dry spell (CDD)
1940
4 days
1941
14 days
1942
17 days
1943
12 days
1944
11 days
1945
16 days
1946
28 days
1947
16 days
1948
22 days
1949
9 days
1950
16 days
1951
17 days
1952
13 days
1953
14 days
1954
14 days
1955
11 days
1956
15 days
1957
22 days
1958
24 days
1959
10 days
1960
9 days
1961
13 days
1962
12 days
1963
17 days
1964
9 days
1965
16 days
1966
13 days
1967
11 days
1968
n/a
1969
n/a
1970
15 days
1971
14 days
1972
20 days
1973
11 days
1974
11 days
Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.
Frost Dates and Growing Season
21 years with a frost
Across 21 years with a frost, the median last spring frost at Cape Decision falls on 11 April and the median first autumn frost on 31 October, which leaves a median of 203 days between them.
Frost dates and growing season at Cape Decision
Measure
Median, all years
Earliest period
Recent period (1944 to 1971)
Recent against earliest
Fitted trend
Last spring frost
11 April
n/a
11 April
n/a
n/a
First autumn frost
31 October
n/a
31 October
n/a
n/a
Growing days
203 days
n/a
203 days
n/a
n/a
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Download the Data
Data for Cape Decision standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Cape Decision threshold days by year: CSV or JSON. Field meanings are on the data page.
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-14 (14 October 2026). Records are computed by this site and are not official.