Record envelope, standing records and threshold days for Valdez WSO (USW00026442), Alaska, United States, with 98 years of record.
Key Facts for Valdez WSO
Valdez WSO (USW00026442) is a weather station in Alaska, United States at 61.13 latitude and -146.35 longitude, 29 m (95 ft) above sea level.
The station reports from 1917 to 2014, 98 years of record.
1,464 records set at Valdez WSO still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Valdez WSO set a daily record high maximum temperature of 7.8 C (46.0 F) on 1 March 2014.
About the Station
Location: Alaska, United States, 61.13 latitude, -146.35 longitude.
Elevation: 29 m (95 ft).
Period of record: 1917 to 2014, 98 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
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 Valdez WSO. 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 Valdez WSO, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
12.8 C (55.0 F)
-31.1 C (-24.0 F)
n/a
n/a
Feb
15.0 C (59.0 F)
-33.3 C (-27.9 F)
n/a
n/a
Mar
13.9 C (57.0 F)
-23.9 C (-11.0 F)
n/a
n/a
Apr
20.6 C (69.1 F)
-17.8 C (0.0 F)
n/a
n/a
May
26.1 C (79.0 F)
-10.6 C (12.9 F)
n/a
n/a
Jun
32.2 C (90.0 F)
-2.8 C (27.0 F)
n/a
n/a
Jul
29.4 C (84.9 F)
0.6 C (33.1 F)
n/a
n/a
Aug
28.3 C (82.9 F)
-1.7 C (28.9 F)
n/a
n/a
Sep
23.3 C (73.9 F)
-10.0 C (14.0 F)
n/a
n/a
Oct
20.6 C (69.1 F)
-15.0 C (5.0 F)
n/a
n/a
Nov
15.0 C (59.0 F)
-23.3 C (-9.9 F)
n/a
n/a
Dec
12.2 C (54.0 F)
-27.8 C (-18.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Valdez WSO still stand. 1972 holds the most, with 48.
Standing records at Valdez WSO by the year they were set
Year set
Standing records
1917
24
1918
27
1919
12
1920
24
1921
10
1922
13
1923
19
1924
19
1925
12
1926
33
1927
25
1928
25
1929
35
1930
21
1931
24
1932
25
1933
4
1934
4
1935
17
1936
16
1937
14
1938
4
1939
17
1940
20
1941
23
1942
33
1943
11
1944
15
1945
13
1946
14
1947
31
1948
20
1949
30
1950
12
1951
22
1952
18
1953
10
1954
13
1955
19
1956
23
1957
9
1958
15
1959
10
1960
9
1961
15
1962
24
1963
21
1964
16
1965
20
1966
18
1967
25
1968
31
1969
13
1971
2
1972
48
1973
3
1975
11
1976
2
1977
10
1978
5
1979
10
1980
14
1981
15
1982
6
1983
9
1984
8
1985
7
1986
16
1987
8
1988
4
1989
17
1990
8
1991
6
1992
15
1993
27
1994
12
1995
16
1996
15
1997
20
1998
7
1999
7
2000
7
2001
6
2002
36
2003
20
2004
17
2005
11
2006
9
2007
4
2008
3
2009
12
2010
2
2011
2
2012
4
2013
20
2014
6
All-Time Record Progression
6 new records
6 all-time records were set at Valdez WSO between 25 June 1953 and 17 June 2013. Each dot is a new record.
When Valdez WSO set new all-time records
Date
Kind
Detail
1953-06-25
Record high maximum temperature
Record high maximum temperature 30.6 C (87.1 F)
1955-12-29
Record daily precipitation
Record daily precipitation 129.5 mm (5.1 in)
1961-12-29
Record low maximum temperature
Record low maximum temperature -22.8 C (-9.0 F)
1967-07-11
Record high minimum temperature
Record high minimum temperature 18.3 C (64.9 F)
1990-01-16
Record daily snowfall
Record daily snowfall 120.7 cm (47.5 in)
2013-06-17
Record high maximum temperature
Record high maximum temperature 32.2 C (90.0 F)
Wettest Day of Each Month
Dec: 129.5 mm (5.1 in)
The wettest day on record for each calendar month at Valdez WSO. The most was 129.5 mm (5.1 in) on 29 December 1955.
Record daily precipitation for each month at Valdez WSO
Month
Record daily precipitation (mm)
Date
Jan
91.9 mm (3.6 in)
26 January 1948
Feb
101.6 mm (4.0 in)
15 February 1928
Mar
117.6 mm (4.6 in)
16 March 1930
Apr
62.2 mm (2.4 in)
1 April 1941
May
69.1 mm (2.7 in)
3 May 2013
Jun
33.8 mm (1.3 in)
16 June 1956
Jul
61.2 mm (2.4 in)
19 July 1930
Aug
80.5 mm (3.2 in)
15 August 1993
Sep
108.5 mm (4.3 in)
20 September 2012
Oct
121.9 mm (4.8 in)
9 October 2006
Nov
109.2 mm (4.3 in)
27 November 1956
Dec
129.5 mm (5.1 in)
29 December 1955
Period of Record Coverage
1917 to 2014
Complete yearUnder 90 percent of days
96 years of record at Valdez WSO, 1917 to 2014. 17 years have data for under 90 percent of days and are left out of rankings: 1917, 1923, 1924, 1925, 1926, 1928, 1933, 1934 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 77 complete years at Valdez WSO, 1918 to 2013. Blue stripes are years cooler than the station's own mean of 2.9 C (37.3 F); red stripes are warmer. The coolest year was 1956, at 0.5 C (32.8 F), and the warmest was 1997, at 4.9 C (40.8 F). The strongest colour marks a difference of 2.5 C (4.5 F).
Annual mean temperature at Valdez WSO as warming stripes, 1918 to 2013
Year
Annual mean temperature
Difference from the station mean
1918
1.1 C
-1.84 C
1919
1.3 C
-1.60 C
1920
1.2 C
-1.73 C
1921
2.2 C
-0.74 C
1922
2.1 C
-0.82 C
1929
1.7 C
-1.21 C
1930
1.4 C
-1.56 C
1931
2.0 C
-0.93 C
1936
3.3 C
+0.37 C
1937
2.9 C
-0.03 C
1938
2.7 C
-0.24 C
1939
1.9 C
-1.01 C
1940
3.3 C
+0.37 C
1941
3.0 C
+0.03 C
1942
2.7 C
-0.26 C
1944
2.3 C
-0.64 C
1945
1.7 C
-1.24 C
1946
1.5 C
-1.38 C
1947
2.3 C
-0.62 C
1948
1.4 C
-1.50 C
1949
1.5 C
-1.44 C
1950
1.3 C
-1.61 C
1951
0.8 C
-2.16 C
1952
1.7 C
-1.25 C
1953
1.9 C
-1.00 C
1954
1.7 C
-1.18 C
1955
0.7 C
-2.24 C
1956
0.5 C
-2.46 C
1957
2.8 C
-0.08 C
1958
2.3 C
-0.61 C
1959
2.3 C
-0.66 C
1960
2.9 C
-0.01 C
1961
2.1 C
-0.86 C
1962
3.1 C
+0.14 C
1963
3.0 C
+0.05 C
1964
2.0 C
-0.91 C
1965
2.3 C
-0.66 C
1966
1.9 C
-1.02 C
1967
3.3 C
+0.41 C
1976
3.4 C
+0.48 C
1977
3.8 C
+0.87 C
1978
4.1 C
+1.17 C
1979
3.6 C
+0.70 C
1980
3.5 C
+0.53 C
1981
4.3 C
+1.34 C
1982
2.7 C
-0.23 C
1983
3.6 C
+0.71 C
1984
4.1 C
+1.18 C
1985
2.7 C
-0.22 C
1986
3.9 C
+0.93 C
1987
4.4 C
+1.44 C
1988
4.0 C
+1.08 C
1989
3.5 C
+0.60 C
1990
3.2 C
+0.26 C
1991
4.1 C
+1.20 C
1992
3.6 C
+0.66 C
1993
4.8 C
+1.89 C
1994
3.6 C
+0.69 C
1995
4.1 C
+1.13 C
1996
3.4 C
+0.47 C
1997
4.9 C
+1.99 C
1998
4.2 C
+1.30 C
1999
3.3 C
+0.42 C
2000
4.4 C
+1.43 C
2001
3.9 C
+0.94 C
2002
4.6 C
+1.68 C
2003
4.8 C
+1.83 C
2004
4.5 C
+1.62 C
2005
4.7 C
+1.73 C
2006
3.1 C
+0.19 C
2007
3.5 C
+0.57 C
2008
2.6 C
-0.30 C
2009
3.7 C
+0.73 C
2010
4.1 C
+1.15 C
2011
3.6 C
+0.63 C
2012
2.9 C
-0.07 C
2013
4.1 C
+1.20 C
The annual mean temperature here has risen by 0.3 C (0.2 to 0.4) per decade over 1918 to 2013. In Fahrenheit: 0.5 F (0.4 to 0.7) per decade. The slope is a straight line fitted to 77 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Valdez WSO
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.3 C (0.2 to 0.4) per decade
0.5 F (0.4 to 0.7) per decade
1918 to 2013
77
Rise
Mean daily maximum
0.2 C (0.1 to 0.3) per decade
0.3 F (0.2 to 0.5) per decade
1918 to 2013
77
Rise
Mean daily minimum
0.4 C (0.3 to 0.5) per decade
0.8 F (0.6 to 0.9) per decade
1918 to 2013
77
Rise
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
1917 to 2014
Yearly extremes at Valdez WSO: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
32.2 C (90.0 F)
2013
24.4 C (75.9 F)
96
Coldest night (TNn)
-33.3 C (-27.9 F)
1947
-21.7 C (-7.1 F)
96
Wettest day (Rx1day)
129.5 mm (5.1 in)
1955
67.1 mm (2.6 in)
96
Wettest five days (Rx5day)
296.9 mm (11.7 in)
2012
147.7 mm (5.8 in)
96
Longest dry spell (CDD)
45 days
1948
18 days
96
Hottest day (TXx)
The hottest day of the year at Valdez WSO, 1917 to 2014. The record is 32.2 C (90.0 F) in 2013, marked on the chart; the median year is 24.4 C (75.9 F).
Hottest day (TXx) at Valdez WSO by year
Year
Hottest day (TXx)
1917
22.8 C (73.0 F)
1918
24.4 C (75.9 F)
1919
25.0 C (77.0 F)
1920
21.1 C (70.0 F)
1921
20.6 C (69.1 F)
1922
23.9 C (75.0 F)
1923
21.7 C (71.1 F)
1924
22.2 C (72.0 F)
1925
21.7 C (71.1 F)
1926
24.4 C (75.9 F)
1927
21.1 C (70.0 F)
1928
23.3 C (73.9 F)
1929
22.8 C (73.0 F)
1930
24.4 C (75.9 F)
1931
23.3 C (73.9 F)
1932
23.3 C (73.9 F)
1933
11.1 C (52.0 F)
1934
27.2 C (81.0 F)
1935
23.9 C (75.0 F)
1936
28.3 C (82.9 F)
1937
24.4 C (75.9 F)
1938
20.6 C (69.1 F)
1939
21.7 C (71.1 F)
1940
23.9 C (75.0 F)
1941
26.1 C (79.0 F)
1942
26.1 C (79.0 F)
1943
24.4 C (75.9 F)
1944
25.0 C (77.0 F)
1945
20.0 C (68.0 F)
1946
23.3 C (73.9 F)
1947
26.1 C (79.0 F)
1948
21.1 C (70.0 F)
1949
22.8 C (73.0 F)
1950
23.9 C (75.0 F)
1951
26.1 C (79.0 F)
1952
23.3 C (73.9 F)
1953
30.6 C (87.1 F)
1954
24.4 C (75.9 F)
1955
27.8 C (82.0 F)
1956
20.0 C (68.0 F)
1957
27.2 C (81.0 F)
1958
19.4 C (66.9 F)
1959
24.4 C (75.9 F)
1960
26.7 C (80.1 F)
1961
20.6 C (69.1 F)
1962
21.1 C (70.0 F)
1963
27.2 C (81.0 F)
1964
23.9 C (75.0 F)
1965
25.0 C (77.0 F)
1966
25.6 C (78.1 F)
1967
26.1 C (79.0 F)
1968
27.8 C (82.0 F)
1969
28.9 C (84.0 F)
1971
18.9 C (66.0 F)
1972
26.1 C (79.0 F)
1973
21.1 C (70.0 F)
1975
26.7 C (80.1 F)
1976
24.4 C (75.9 F)
1977
27.2 C (81.0 F)
1978
23.9 C (75.0 F)
1979
29.4 C (84.9 F)
1980
22.8 C (73.0 F)
1981
24.4 C (75.9 F)
1982
22.8 C (73.0 F)
1983
26.1 C (79.0 F)
1984
23.9 C (75.0 F)
1985
22.8 C (73.0 F)
1986
23.9 C (75.0 F)
1987
28.9 C (84.0 F)
1988
22.8 C (73.0 F)
1989
26.1 C (79.0 F)
1990
27.2 C (81.0 F)
1991
23.3 C (73.9 F)
1992
23.9 C (75.0 F)
1993
28.3 C (82.9 F)
1994
27.8 C (82.0 F)
1995
26.1 C (79.0 F)
1996
25.6 C (78.1 F)
1997
30.0 C (86.0 F)
1998
24.4 C (75.9 F)
1999
29.4 C (84.9 F)
2000
23.9 C (75.0 F)
2001
25.6 C (78.1 F)
2002
26.7 C (80.1 F)
2003
28.3 C (82.9 F)
2004
27.2 C (81.0 F)
2005
24.4 C (75.9 F)
2006
24.4 C (75.9 F)
2007
26.1 C (79.0 F)
2008
22.8 C (73.0 F)
2009
27.2 C (81.0 F)
2010
23.3 C (73.9 F)
2011
23.9 C (75.0 F)
2012
22.8 C (73.0 F)
2013
32.2 C (90.0 F)
2014
7.8 C (46.0 F)
Coldest night (TNn)
The coldest night of the year at Valdez WSO, 1917 to 2014. The record is -33.3 C (-27.9 F) in 1947, marked on the chart; the median year is -21.7 C (-7.1 F).
Coldest night (TNn) at Valdez WSO by year
Year
Coldest night (TNn)
1917
-27.8 C (-18.0 F)
1918
-24.4 C (-11.9 F)
1919
-25.6 C (-14.1 F)
1920
-25.6 C (-14.1 F)
1921
-25.6 C (-14.1 F)
1922
-23.3 C (-9.9 F)
1923
-24.4 C (-11.9 F)
1924
-21.7 C (-7.1 F)
1925
-26.1 C (-15.0 F)
1926
-17.2 C (1.0 F)
1927
-22.8 C (-9.0 F)
1928
-16.7 C (1.9 F)
1929
-18.9 C (-2.0 F)
1930
-26.1 C (-15.0 F)
1931
-19.4 C (-2.9 F)
1932
-26.7 C (-16.1 F)
1933
-21.7 C (-7.1 F)
1934
0.6 C (33.1 F)
1935
-20.6 C (-5.1 F)
1936
-21.7 C (-7.1 F)
1937
-23.3 C (-9.9 F)
1938
-23.9 C (-11.0 F)
1939
-20.0 C (-4.0 F)
1940
-26.7 C (-16.1 F)
1941
-26.7 C (-16.1 F)
1942
-23.3 C (-9.9 F)
1943
-27.8 C (-18.0 F)
1944
-21.7 C (-7.1 F)
1945
-23.3 C (-9.9 F)
1946
-26.1 C (-15.0 F)
1947
-33.3 C (-27.9 F)
1948
-24.4 C (-11.9 F)
1949
-27.8 C (-18.0 F)
1950
-22.2 C (-8.0 F)
1951
-31.1 C (-24.0 F)
1952
-26.1 C (-15.0 F)
1953
-23.3 C (-9.9 F)
1954
-23.3 C (-9.9 F)
1955
-23.3 C (-9.9 F)
1956
-27.2 C (-17.0 F)
1957
-23.9 C (-11.0 F)
1958
-20.0 C (-4.0 F)
1959
-25.6 C (-14.1 F)
1960
-23.9 C (-11.0 F)
1961
-26.1 C (-15.0 F)
1962
-21.7 C (-7.1 F)
1963
-24.4 C (-11.9 F)
1964
-26.1 C (-15.0 F)
1965
-21.1 C (-6.0 F)
1966
-25.0 C (-13.0 F)
1967
-22.2 C (-8.0 F)
1968
-30.6 C (-23.1 F)
1969
-25.0 C (-13.0 F)
1971
-21.7 C (-7.1 F)
1972
-28.9 C (-20.0 F)
1973
-13.9 C (7.0 F)
1975
-21.1 C (-6.0 F)
1976
-20.0 C (-4.0 F)
1977
-17.8 C (0.0 F)
1978
-14.4 C (6.1 F)
1979
-17.2 C (1.0 F)
1980
-21.1 C (-6.0 F)
1981
-17.8 C (0.0 F)
1982
-17.8 C (0.0 F)
1983
-17.8 C (0.0 F)
1984
-19.4 C (-2.9 F)
1985
-17.8 C (0.0 F)
1986
-14.4 C (6.1 F)
1987
-16.1 C (3.0 F)
1988
-14.4 C (6.1 F)
1989
-22.2 C (-8.0 F)
1990
-20.6 C (-5.1 F)
1991
-16.7 C (1.9 F)
1992
-15.6 C (3.9 F)
1993
-19.4 C (-2.9 F)
1994
-16.7 C (1.9 F)
1995
-17.2 C (1.0 F)
1996
-17.2 C (1.0 F)
1997
-18.9 C (-2.0 F)
1998
-15.0 C (5.0 F)
1999
-23.3 C (-9.9 F)
2000
-17.2 C (1.0 F)
2001
-16.7 C (1.9 F)
2002
-15.6 C (3.9 F)
2003
-16.7 C (1.9 F)
2004
-18.3 C (-0.9 F)
2005
-18.3 C (-0.9 F)
2006
-17.8 C (0.0 F)
2007
-17.2 C (1.0 F)
2008
-17.8 C (0.0 F)
2009
-20.6 C (-5.1 F)
2010
-16.1 C (3.0 F)
2011
-22.8 C (-9.0 F)
2012
-18.3 C (-0.9 F)
2013
-17.8 C (0.0 F)
2014
-16.0 C (3.2 F)
Wettest day (Rx1day)
The wettest day of the year at Valdez WSO, 1917 to 2014. The record is 129.5 mm (5.1 in) in 1955, marked on the chart; the median year is 67.1 mm (2.6 in).
Wettest day (Rx1day) at Valdez WSO by year
Year
Wettest day (Rx1day)
1917
71.1 mm (2.8 in)
1918
50.0 mm (2.0 in)
1919
54.9 mm (2.2 in)
1920
54.6 mm (2.1 in)
1921
48.8 mm (1.9 in)
1922
45.7 mm (1.8 in)
1923
58.9 mm (2.3 in)
1924
66.8 mm (2.6 in)
1925
78.7 mm (3.1 in)
1926
66.0 mm (2.6 in)
1927
63.5 mm (2.5 in)
1928
101.6 mm (4.0 in)
1929
53.8 mm (2.1 in)
1930
117.6 mm (4.6 in)
1931
69.9 mm (2.8 in)
1932
88.4 mm (3.5 in)
1933
47.2 mm (1.9 in)
1934
15.2 mm (0.6 in)
1935
61.5 mm (2.4 in)
1936
80.0 mm (3.1 in)
1937
89.7 mm (3.5 in)
1938
41.7 mm (1.6 in)
1939
49.3 mm (1.9 in)
1940
64.8 mm (2.6 in)
1941
62.2 mm (2.4 in)
1942
77.2 mm (3.0 in)
1943
71.6 mm (2.8 in)
1944
54.6 mm (2.1 in)
1945
67.3 mm (2.6 in)
1946
52.3 mm (2.1 in)
1947
54.4 mm (2.1 in)
1948
91.9 mm (3.6 in)
1949
94.2 mm (3.7 in)
1950
77.0 mm (3.0 in)
1951
81.3 mm (3.2 in)
1952
69.9 mm (2.8 in)
1953
53.3 mm (2.1 in)
1954
78.0 mm (3.1 in)
1955
129.5 mm (5.1 in)
1956
109.2 mm (4.3 in)
1957
65.5 mm (2.6 in)
1958
72.4 mm (2.9 in)
1959
44.5 mm (1.8 in)
1960
83.8 mm (3.3 in)
1961
86.4 mm (3.4 in)
1962
63.5 mm (2.5 in)
1963
55.4 mm (2.2 in)
1964
72.9 mm (2.9 in)
1965
76.2 mm (3.0 in)
1966
63.5 mm (2.5 in)
1967
56.6 mm (2.2 in)
1968
55.9 mm (2.2 in)
1969
21.3 mm (0.8 in)
1971
79.0 mm (3.1 in)
1972
32.8 mm (1.3 in)
1973
38.4 mm (1.5 in)
1975
75.7 mm (3.0 in)
1976
99.8 mm (3.9 in)
1977
54.6 mm (2.1 in)
1978
39.1 mm (1.5 in)
1979
64.3 mm (2.5 in)
1980
63.0 mm (2.5 in)
1981
71.9 mm (2.8 in)
1982
62.5 mm (2.5 in)
1983
83.3 mm (3.3 in)
1984
46.0 mm (1.8 in)
1985
77.5 mm (3.1 in)
1986
68.3 mm (2.7 in)
1987
62.7 mm (2.5 in)
1988
69.1 mm (2.7 in)
1989
64.3 mm (2.5 in)
1990
49.3 mm (1.9 in)
1991
47.0 mm (1.9 in)
1992
77.5 mm (3.1 in)
1993
80.5 mm (3.2 in)
1994
60.2 mm (2.4 in)
1995
68.1 mm (2.7 in)
1996
77.5 mm (3.1 in)
1997
73.4 mm (2.9 in)
1998
60.2 mm (2.4 in)
1999
103.1 mm (4.1 in)
2000
56.1 mm (2.2 in)
2001
68.1 mm (2.7 in)
2002
64.0 mm (2.5 in)
2003
65.3 mm (2.6 in)
2004
81.0 mm (3.2 in)
2005
73.9 mm (2.9 in)
2006
121.9 mm (4.8 in)
2007
80.8 mm (3.2 in)
2008
57.7 mm (2.3 in)
2009
68.8 mm (2.7 in)
2010
44.5 mm (1.8 in)
2011
71.1 mm (2.8 in)
2012
108.5 mm (4.3 in)
2013
88.4 mm (3.5 in)
2014
80.8 mm (3.2 in)
Wettest five days (Rx5day)
The wettest five days of the year at Valdez WSO, 1917 to 2014. The record is 296.9 mm (11.7 in) in 2012, marked on the chart; the median year is 147.7 mm (5.8 in).
Wettest five days (Rx5day) at Valdez WSO by year
Year
Wettest five days (Rx5day)
1917
139.9 mm (5.5 in)
1918
136.1 mm (5.4 in)
1919
74.2 mm (2.9 in)
1920
119.8 mm (4.7 in)
1921
97.9 mm (3.9 in)
1922
137.1 mm (5.4 in)
1923
133.8 mm (5.3 in)
1924
115.1 mm (4.5 in)
1925
221.0 mm (8.7 in)
1926
172.4 mm (6.8 in)
1927
118.7 mm (4.7 in)
1928
295.4 mm (11.6 in)
1929
148.6 mm (5.9 in)
1930
154.7 mm (6.1 in)
1931
201.4 mm (7.9 in)
1932
188.9 mm (7.4 in)
1933
139.1 mm (5.5 in)
1934
34.4 mm (1.4 in)
1935
200.9 mm (7.9 in)
1936
141.9 mm (5.6 in)
1937
151.9 mm (6.0 in)
1938
160.5 mm (6.3 in)
1939
144.6 mm (5.7 in)
1940
118.1 mm (4.6 in)
1941
86.4 mm (3.4 in)
1942
127.0 mm (5.0 in)
1943
183.2 mm (7.2 in)
1944
119.1 mm (4.7 in)
1945
125.0 mm (4.9 in)
1946
92.5 mm (3.6 in)
1947
128.0 mm (5.0 in)
1948
205.7 mm (8.1 in)
1949
208.8 mm (8.2 in)
1950
138.5 mm (5.5 in)
1951
174.2 mm (6.9 in)
1952
163.3 mm (6.4 in)
1953
194.2 mm (7.6 in)
1954
137.2 mm (5.4 in)
1955
265.4 mm (10.4 in)
1956
242.0 mm (9.5 in)
1957
126.8 mm (5.0 in)
1958
138.7 mm (5.5 in)
1959
96.2 mm (3.8 in)
1960
179.9 mm (7.1 in)
1961
122.1 mm (4.8 in)
1962
129.1 mm (5.1 in)
1963
137.2 mm (5.4 in)
1964
222.0 mm (8.7 in)
1965
168.2 mm (6.6 in)
1966
138.9 mm (5.5 in)
1967
139.5 mm (5.5 in)
1968
158.4 mm (6.2 in)
1969
47.8 mm (1.9 in)
1971
88.4 mm (3.5 in)
1972
89.7 mm (3.5 in)
1973
95.3 mm (3.8 in)
1975
131.0 mm (5.2 in)
1976
269.2 mm (10.6 in)
1977
133.4 mm (5.3 in)
1978
109.8 mm (4.3 in)
1979
151.2 mm (6.0 in)
1980
161.6 mm (6.4 in)
1981
183.4 mm (7.2 in)
1982
181.4 mm (7.1 in)
1983
184.9 mm (7.3 in)
1984
114.9 mm (4.5 in)
1985
195.9 mm (7.7 in)
1986
133.9 mm (5.3 in)
1987
160.0 mm (6.3 in)
1988
156.5 mm (6.2 in)
1989
169.0 mm (6.7 in)
1990
146.8 mm (5.8 in)
1991
110.4 mm (4.3 in)
1992
152.4 mm (6.0 in)
1993
203.5 mm (8.0 in)
1994
128.0 mm (5.0 in)
1995
143.8 mm (5.7 in)
1996
186.4 mm (7.3 in)
1997
155.5 mm (6.1 in)
1998
132.1 mm (5.2 in)
1999
277.1 mm (10.9 in)
2000
141.2 mm (5.6 in)
2001
109.4 mm (4.3 in)
2002
174.2 mm (6.9 in)
2003
171.7 mm (6.8 in)
2004
209.8 mm (8.3 in)
2005
198.9 mm (7.8 in)
2006
228.3 mm (9.0 in)
2007
195.2 mm (7.7 in)
2008
134.6 mm (5.3 in)
2009
196.8 mm (7.7 in)
2010
126.4 mm (5.0 in)
2011
156.3 mm (6.2 in)
2012
296.9 mm (11.7 in)
2013
174.5 mm (6.9 in)
2014
159.3 mm (6.3 in)
Longest dry spell (CDD)
The longest dry spell of the year at Valdez WSO, 1917 to 2014. The record is 45 days in 1948, marked on the chart; the median year is 18 days.
Longest dry spell (CDD) at Valdez WSO by year
Year
Longest dry spell (CDD)
1917
23 days
1918
20 days
1919
16 days
1920
16 days
1921
21 days
1922
20 days
1923
21 days
1924
20 days
1925
18 days
1926
14 days
1927
15 days
1928
10 days
1929
13 days
1930
22 days
1931
17 days
1932
12 days
1933
16 days
1934
16 days
1935
23 days
1936
28 days
1937
21 days
1938
33 days
1939
22 days
1940
11 days
1941
16 days
1942
16 days
1943
14 days
1944
17 days
1945
14 days
1946
19 days
1947
24 days
1948
45 days
1949
13 days
1950
30 days
1951
18 days
1952
14 days
1953
15 days
1954
37 days
1955
14 days
1956
18 days
1957
22 days
1958
16 days
1959
26 days
1960
20 days
1961
15 days
1962
17 days
1963
15 days
1964
15 days
1965
15 days
1966
18 days
1967
36 days
1968
23 days
1969
29 days
1971
6 days
1972
25 days
1973
16 days
1975
24 days
1976
18 days
1977
18 days
1978
16 days
1979
26 days
1980
14 days
1981
32 days
1982
16 days
1983
22 days
1984
16 days
1985
14 days
1986
11 days
1987
17 days
1988
8 days
1989
24 days
1990
21 days
1991
13 days
1992
15 days
1993
12 days
1994
20 days
1995
22 days
1996
22 days
1997
20 days
1998
18 days
1999
15 days
2000
14 days
2001
13 days
2002
18 days
2003
18 days
2004
15 days
2005
19 days
2006
21 days
2007
23 days
2008
14 days
2009
23 days
2010
18 days
2011
25 days
2012
20 days
2013
23 days
2014
15 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
77 years with a frost
Across 77 years with a frost, the median last spring frost at Valdez WSO falls on 13 May and the median first autumn frost on 21 September, which leaves a median of 134 days between them.
In 1984 to 2013 the median growing season was 156 days. That is 43 days more than in 1918 to 1958.
Fitted over all years, the growing season changes by +6.9 days per decade at this station.
Frost dates and growing season at Valdez WSO
Measure
Median, all years
Earliest period (1918 to 1958)
Recent period (1984 to 2013)
Recent against earliest
Fitted trend
Last spring frost
13 May
23 May
29 April
24 days earlier
-3.8 days per decade
First autumn frost
21 September
13 September
29 September
16 days later
+3.1 days per decade
Growing days
134 days
113 days
156 days
43 days more
+6.9 days per decade
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.
Rainfall Return Levels
77 years, 1918 to 2013
A day with at least 67.6 mm (2.7 in) of rain is expected about once in 2 years. A day with at least 129.1 mm (5.1 in) of rain is expected about once in 100 years.
Rainfall return levels at Valdez WSO: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
67.6 mm (2.7 in)
5 years
84.3 mm (3.3 in)
10 years
95.3 mm (3.8 in)
25 years
109.0 mm (4.3 in)
50 years
119.1 mm (4.7 in)
100 years
129.1 mm (5.1 in)
Longer than the 77 years of record
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 77 years of values from 1918 to 2013.
A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.
The largest wettest-day totals in the fit: 129.5 mm (5.1 in) in 1955; 121.9 mm (4.8 in) in 2006; 117.6 mm (4.6 in) in 1930.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Valdez WSO, at 1961. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1961 ran 0.7 C (1.3 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at Valdez WSO, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1961
+0.7
+1.3
likely
5
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Download the Data
Data for Valdez WSO standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Valdez WSO 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.