Record envelope, standing records and threshold days for Coupeville 1 S (USC00451783), Washington, United States, with 126 years of record.
Key Facts for Coupeville 1 S
Coupeville 1 S (USC00451783) is a weather station in Washington, United States at 48.21 latitude and -122.69 longitude, 15 m (50 ft) above sea level.
The station reports from 1895 to 2020, 126 years of record.
1,464 records set at Coupeville 1 S still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Coupeville 1 S set a daily record high minimum temperature of 15.6 C (60.1 F) on 20 August 2020.
About the Station
Location: Washington, United States, 48.21 latitude, -122.69 longitude.
Elevation: 15 m (50 ft).
Period of record: 1895 to 2020, 126 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 Coupeville 1 S. 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 Coupeville 1 S, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
18.3 C (64.9 F)
-16.1 C (3.0 F)
n/a
n/a
Feb
20.6 C (69.1 F)
-15.0 C (5.0 F)
n/a
n/a
Mar
25.6 C (78.1 F)
-11.7 C (10.9 F)
n/a
n/a
Apr
27.2 C (81.0 F)
-3.9 C (25.0 F)
n/a
n/a
May
30.0 C (86.0 F)
-2.2 C (28.0 F)
n/a
n/a
Jun
33.3 C (91.9 F)
1.7 C (35.1 F)
n/a
n/a
Jul
35.6 C (96.1 F)
4.4 C (39.9 F)
n/a
n/a
Aug
36.7 C (98.1 F)
3.3 C (37.9 F)
n/a
n/a
Sep
32.8 C (91.0 F)
-1.7 C (28.9 F)
n/a
n/a
Oct
26.1 C (79.0 F)
-7.2 C (19.0 F)
n/a
n/a
Nov
20.0 C (68.0 F)
-14.4 C (6.1 F)
n/a
n/a
Dec
21.1 C (70.0 F)
-16.1 C (3.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Coupeville 1 S still stand. 1955 holds the most, with 40.
Standing records at Coupeville 1 S by the year they were set
Year set
Standing records
1895
3
1896
22
1897
13
1898
17
1899
26
1900
13
1901
24
1902
9
1903
13
1904
16
1905
25
1906
19
1907
17
1908
12
1909
16
1921
1
1925
5
1926
29
1927
11
1928
12
1929
13
1930
9
1931
11
1932
20
1933
17
1934
6
1935
37
1936
27
1937
8
1938
9
1939
13
1940
20
1941
17
1942
11
1943
11
1944
14
1945
10
1946
5
1947
9
1948
9
1949
18
1950
36
1951
13
1952
12
1953
8
1954
14
1955
40
1956
14
1957
12
1958
29
1959
12
1960
11
1961
14
1962
13
1963
18
1964
20
1965
12
1966
15
1967
8
1968
18
1969
14
1970
9
1971
13
1972
18
1973
12
1974
13
1975
7
1976
10
1977
13
1978
11
1979
6
1980
17
1981
13
1982
6
1983
17
1984
6
1985
19
1986
14
1987
12
1988
9
1989
5
1990
15
1991
11
1992
11
1993
6
1994
5
1995
10
1996
11
1997
5
1998
16
1999
6
2000
3
2001
4
2002
12
2003
14
2004
15
2005
15
2006
12
2007
5
2008
8
2009
13
2010
10
2011
8
2012
5
2013
2
2014
17
2015
7
2016
22
2017
8
2018
13
2019
6
2020
9
All-Time Record Progression
6 new records
6 all-time records were set at Coupeville 1 S between 14 June 1946 and 12 August 2015. Each dot is a new record.
When Coupeville 1 S set new all-time records
Date
Kind
Detail
1946-06-14
Record daily precipitation
Record daily precipitation 53.8 mm (2.1 in)
1948-05-28
Record daily precipitation
Record daily precipitation 62.2 mm (2.4 in)
1950-01-03
Record low minimum temperature
Record low minimum temperature -16.1 C (3.0 F)
1960-08-08
Record high maximum temperature
Record high maximum temperature 36.7 C (98.1 F)
1996-12-29
Record daily snowfall
Record daily snowfall 40.6 cm (16.0 in)
2015-08-12
Record high minimum temperature
Record high minimum temperature 18.9 C (66.0 F)
Wettest Day of Each Month
May: 62.2 mm (2.4 in)
The wettest day on record for each calendar month at Coupeville 1 S. The most was 62.2 mm (2.4 in) on 28 May 1948.
Record daily precipitation for each month at Coupeville 1 S
Month
Record daily precipitation (mm)
Date
Jan
31.5 mm (1.2 in)
7 January 2009
Feb
42.2 mm (1.7 in)
5 February 2020
Mar
29.7 mm (1.2 in)
20 March 1952
Apr
32.3 mm (1.3 in)
28 April 1972
May
62.2 mm (2.4 in)
28 May 1948
Jun
53.8 mm (2.1 in)
14 June 1946
Jul
35.8 mm (1.4 in)
10 July 1932
Aug
31.5 mm (1.2 in)
11 August 2018
Sep
57.2 mm (2.3 in)
1 September 1983
Oct
41.4 mm (1.6 in)
17 October 2009
Nov
45.7 mm (1.8 in)
25 November 1921
Dec
49.8 mm (2.0 in)
29 December 1996
Period of Record Coverage
1895 to 2020
Complete yearUnder 90 percent of days
112 years of record at Coupeville 1 S, 1895 to 2020. 22 years have data for under 90 percent of days and are left out of rankings: 1895, 1899, 1901, 1904, 1906, 1908, 1909, 1921 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 84 complete years at Coupeville 1 S, 1896 to 2018. Blue stripes are years cooler than the station's own mean of 10.0 C (50.0 F); red stripes are warmer. The coolest year was 1955, at 8.4 C (47.2 F), and the warmest was 2004, at 11.8 C (53.2 F). The strongest colour marks a difference of 1.8 C (3.2 F).
Annual mean temperature at Coupeville 1 S as warming stripes, 1896 to 2018
Year
Annual mean temperature
Difference from the station mean
1896
9.2 C
-0.75 C
1897
9.4 C
-0.54 C
1898
10.6 C
+0.62 C
1900
10.3 C
+0.29 C
1903
9.7 C
-0.26 C
1907
10.1 C
+0.16 C
1926
10.7 C
+0.70 C
1928
9.8 C
-0.16 C
1929
8.9 C
-1.12 C
1930
9.3 C
-0.66 C
1931
10.1 C
+0.13 C
1932
9.5 C
-0.44 C
1933
9.3 C
-0.72 C
1934
10.6 C
+0.63 C
1935
9.5 C
-0.48 C
1936
9.5 C
-0.46 C
1937
9.4 C
-0.58 C
1938
9.8 C
-0.15 C
1940
10.8 C
+0.80 C
1941
10.9 C
+0.89 C
1943
9.7 C
-0.29 C
1944
10.1 C
+0.16 C
1945
9.8 C
-0.19 C
1946
9.6 C
-0.38 C
1947
10.1 C
+0.12 C
1948
9.1 C
-0.91 C
1949
9.1 C
-0.93 C
1950
8.8 C
-1.18 C
1951
9.3 C
-0.73 C
1952
9.5 C
-0.50 C
1953
10.2 C
+0.24 C
1954
9.6 C
-0.43 C
1955
8.4 C
-1.54 C
1956
9.5 C
-0.52 C
1957
10.0 C
+0.03 C
1958
11.8 C
+1.80 C
1959
10.0 C
+0.01 C
1960
9.9 C
-0.07 C
1961
10.4 C
+0.45 C
1962
9.7 C
-0.26 C
1963
10.1 C
+0.07 C
1964
8.7 C
-1.31 C
1965
9.8 C
-0.22 C
1966
10.2 C
+0.17 C
1967
10.4 C
+0.45 C
1968
10.1 C
+0.07 C
1969
9.8 C
-0.20 C
1970
9.8 C
-0.22 C
1971
9.4 C
-0.56 C
1972
9.3 C
-0.72 C
1973
9.8 C
-0.18 C
1974
10.0 C
0.00 C
1976
9.5 C
-0.45 C
1977
9.6 C
-0.39 C
1978
9.9 C
-0.13 C
1979
10.1 C
+0.08 C
1980
9.8 C
-0.15 C
1981
10.3 C
+0.27 C
1982
9.4 C
-0.55 C
1983
10.2 C
+0.24 C
1984
9.9 C
-0.11 C
1985
9.0 C
-1.00 C
1986
10.3 C
+0.28 C
1987
10.5 C
+0.52 C
1988
10.1 C
+0.11 C
1989
9.9 C
-0.12 C
1990
10.1 C
+0.12 C
1991
10.2 C
+0.24 C
1997
10.6 C
+0.64 C
1999
10.3 C
+0.35 C
2000
10.3 C
+0.36 C
2002
10.8 C
+0.81 C
2003
11.4 C
+1.46 C
2004
11.8 C
+1.80 C
2005
11.3 C
+1.36 C
2006
10.8 C
+0.86 C
2007
10.6 C
+0.59 C
2008
9.9 C
-0.04 C
2009
10.4 C
+0.43 C
2010
11.0 C
+0.98 C
2011
10.0 C
-0.02 C
2012
10.2 C
+0.23 C
2014
11.1 C
+1.11 C
2018
10.3 C
+0.35 C
The annual mean temperature here has risen by 0.08 C (0.04 to 0.12) per decade over 1896 to 2018. In Fahrenheit: 0.1 F (0.1 to 0.2) per decade. The slope is a straight line fitted to 84 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Coupeville 1 S
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.08 C (0.04 to 0.12) per decade
0.1 F (0.1 to 0.2) per decade
1896 to 2018
84
Rise
Mean daily maximum
0.07 C (0.01 to 0.12) per decade
0.12 F (0.02 to 0.22) per decade
1896 to 2018
84
Rise
Mean daily minimum
0.10 C (0.05 to 0.14) per decade
0.2 F (0.1 to 0.3) per decade
1896 to 2018
84
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
1895 to 2020
Yearly extremes at Coupeville 1 S: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
36.7 C (98.1 F)
1960
30.0 C (86.0 F)
112
Coldest night (TNn)
-16.1 C (3.0 F)
1950
-7.8 C (18.0 F)
111
Wettest day (Rx1day)
62.2 mm (2.4 in)
1948
24.6 mm (1.0 in)
120
Wettest five days (Rx5day)
101.4 mm (4.0 in)
2015
41.6 mm (1.6 in)
120
Longest dry spell (CDD)
76 days
1945
28 days
120
Hottest day (TXx)
The hottest day of the year at Coupeville 1 S, 1895 to 2020. The record is 36.7 C (98.1 F) in 1960, marked on the chart; the median year is 30.0 C (86.0 F).
Hottest day (TXx) at Coupeville 1 S by year
Year
Hottest day (TXx)
1895
16.1 C (61.0 F)
1896
31.1 C (88.0 F)
1897
28.9 C (84.0 F)
1898
34.4 C (93.9 F)
1899
34.4 C (93.9 F)
1900
28.3 C (82.9 F)
1901
30.6 C (87.1 F)
1902
31.7 C (89.1 F)
1903
31.1 C (88.0 F)
1904
31.1 C (88.0 F)
1905
31.1 C (88.0 F)
1906
31.1 C (88.0 F)
1907
31.7 C (89.1 F)
1908
31.1 C (88.0 F)
1909
21.7 C (71.1 F)
1916
n/a
1917
n/a
1918
n/a
1919
n/a
1920
n/a
1921
21.1 C (70.0 F)
1922
n/a
1923
n/a
1924
n/a
1925
18.9 C (66.0 F)
1926
33.3 C (91.9 F)
1927
31.7 C (89.1 F)
1928
33.3 C (91.9 F)
1929
27.8 C (82.0 F)
1930
31.7 C (89.1 F)
1931
35.6 C (96.1 F)
1932
30.6 C (87.1 F)
1933
32.2 C (90.0 F)
1934
29.4 C (84.9 F)
1935
32.2 C (90.0 F)
1936
27.8 C (82.0 F)
1937
28.3 C (82.9 F)
1938
31.1 C (88.0 F)
1939
32.2 C (90.0 F)
1940
29.4 C (84.9 F)
1941
35.6 C (96.1 F)
1942
32.2 C (90.0 F)
1943
27.8 C (82.0 F)
1944
30.6 C (87.1 F)
1945
28.9 C (84.0 F)
1946
28.3 C (82.9 F)
1947
25.6 C (78.1 F)
1948
26.7 C (80.1 F)
1949
27.2 C (81.0 F)
1950
26.7 C (80.1 F)
1951
31.7 C (89.1 F)
1952
30.0 C (86.0 F)
1953
28.9 C (84.0 F)
1954
26.1 C (79.0 F)
1955
31.7 C (89.1 F)
1956
30.6 C (87.1 F)
1957
29.4 C (84.9 F)
1958
35.0 C (95.0 F)
1959
32.8 C (91.0 F)
1960
36.7 C (98.1 F)
1961
33.9 C (93.0 F)
1962
31.1 C (88.0 F)
1963
30.0 C (86.0 F)
1964
28.3 C (82.9 F)
1965
31.7 C (89.1 F)
1966
30.0 C (86.0 F)
1967
33.3 C (91.9 F)
1968
30.6 C (87.1 F)
1969
30.6 C (87.1 F)
1970
32.2 C (90.0 F)
1971
31.7 C (89.1 F)
1972
31.1 C (88.0 F)
1973
28.3 C (82.9 F)
1974
32.2 C (90.0 F)
1975
27.2 C (81.0 F)
1976
29.4 C (84.9 F)
1977
32.2 C (90.0 F)
1978
31.1 C (88.0 F)
1979
29.4 C (84.9 F)
1980
26.7 C (80.1 F)
1981
32.2 C (90.0 F)
1982
30.0 C (86.0 F)
1983
28.3 C (82.9 F)
1984
28.3 C (82.9 F)
1985
29.4 C (84.9 F)
1986
30.0 C (86.0 F)
1987
29.4 C (84.9 F)
1988
32.2 C (90.0 F)
1989
27.8 C (82.0 F)
1990
29.4 C (84.9 F)
1991
30.0 C (86.0 F)
1992
23.9 C (75.0 F)
1993
30.0 C (86.0 F)
1994
23.9 C (75.0 F)
1995
31.1 C (88.0 F)
1996
27.2 C (81.0 F)
1997
28.3 C (82.9 F)
1998
28.3 C (82.9 F)
1999
27.8 C (82.0 F)
2000
30.6 C (87.1 F)
2001
30.6 C (87.1 F)
2002
31.1 C (88.0 F)
2003
32.2 C (90.0 F)
2004
33.3 C (91.9 F)
2005
29.4 C (84.9 F)
2006
33.3 C (91.9 F)
2007
33.3 C (91.9 F)
2008
29.4 C (84.9 F)
2009
34.4 C (93.9 F)
2010
33.3 C (91.9 F)
2011
26.1 C (79.0 F)
2012
28.3 C (82.9 F)
2013
26.1 C (79.0 F)
2014
27.8 C (82.0 F)
2015
31.7 C (89.1 F)
2016
29.4 C (84.9 F)
2017
29.4 C (84.9 F)
2018
27.8 C (82.0 F)
2019
26.7 C (80.1 F)
2020
26.7 C (80.1 F)
Coldest night (TNn)
The coldest night of the year at Coupeville 1 S, 1895 to 2020. The record is -16.1 C (3.0 F) in 1950, marked on the chart; the median year is -7.8 C (18.0 F).
Coldest night (TNn) at Coupeville 1 S by year
Year
Coldest night (TNn)
1895
-6.1 C (21.0 F)
1896
-11.7 C (10.9 F)
1897
-7.2 C (19.0 F)
1898
-5.0 C (23.0 F)
1899
-14.4 C (6.1 F)
1900
-7.2 C (19.0 F)
1901
-5.6 C (21.9 F)
1902
-10.6 C (12.9 F)
1903
-5.6 C (21.9 F)
1904
-7.2 C (19.0 F)
1905
-7.8 C (18.0 F)
1906
-6.1 C (21.0 F)
1907
-14.4 C (6.1 F)
1908
-5.6 C (21.9 F)
1909
-12.8 C (9.0 F)
1916
n/a
1917
n/a
1918
n/a
1919
n/a
1920
n/a
1921
n/a
1922
n/a
1923
n/a
1924
n/a
1925
-2.8 C (27.0 F)
1926
-9.4 C (15.1 F)
1927
-11.1 C (12.0 F)
1928
-6.7 C (19.9 F)
1929
-14.4 C (6.1 F)
1930
-13.9 C (7.0 F)
1931
-5.0 C (23.0 F)
1932
-11.7 C (10.9 F)
1933
-11.1 C (12.0 F)
1934
-2.2 C (28.0 F)
1935
-15.0 C (5.0 F)
1936
-12.2 C (10.0 F)
1937
-12.8 C (9.0 F)
1938
-5.0 C (23.0 F)
1939
-7.2 C (19.0 F)
1940
-5.0 C (23.0 F)
1941
-5.6 C (21.9 F)
1942
-8.9 C (16.0 F)
1943
-13.3 C (8.1 F)
1944
-7.2 C (19.0 F)
1945
-9.4 C (15.1 F)
1946
-6.1 C (21.0 F)
1947
-9.4 C (15.1 F)
1948
-6.7 C (19.9 F)
1949
-12.2 C (10.0 F)
1950
-16.1 C (3.0 F)
1951
-10.6 C (12.9 F)
1952
-7.8 C (18.0 F)
1953
-2.2 C (28.0 F)
1954
-8.9 C (16.0 F)
1955
-13.3 C (8.1 F)
1956
-12.2 C (10.0 F)
1957
-13.3 C (8.1 F)
1958
-6.1 C (21.0 F)
1959
-12.2 C (10.0 F)
1960
-6.7 C (19.9 F)
1961
-6.7 C (19.9 F)
1962
-11.1 C (12.0 F)
1963
-11.1 C (12.0 F)
1964
-16.1 C (3.0 F)
1965
-6.1 C (21.0 F)
1966
-4.4 C (24.1 F)
1967
-6.1 C (21.0 F)
1968
-16.1 C (3.0 F)
1969
-14.4 C (6.1 F)
1970
-6.1 C (21.0 F)
1971
-10.0 C (14.0 F)
1972
-13.9 C (7.0 F)
1973
-12.8 C (9.0 F)
1974
-9.4 C (15.1 F)
1975
-7.2 C (19.0 F)
1976
-6.1 C (21.0 F)
1977
-11.1 C (12.0 F)
1978
-12.8 C (9.0 F)
1979
-11.7 C (10.9 F)
1980
-12.2 C (10.0 F)
1981
-6.7 C (19.9 F)
1982
-13.3 C (8.1 F)
1983
-13.9 C (7.0 F)
1984
-7.8 C (18.0 F)
1985
-14.4 C (6.1 F)
1986
-7.8 C (18.0 F)
1987
-5.6 C (21.9 F)
1988
-6.7 C (19.9 F)
1989
-15.0 C (5.0 F)
1990
-12.2 C (10.0 F)
1991
-6.1 C (21.0 F)
1992
-5.6 C (21.9 F)
1993
-9.4 C (15.1 F)
1994
-7.2 C (19.0 F)
1995
-7.8 C (18.0 F)
1996
-8.9 C (16.0 F)
1997
-6.7 C (19.9 F)
1998
-10.0 C (14.0 F)
1999
-7.2 C (19.0 F)
2000
-5.6 C (21.9 F)
2001
-4.4 C (24.1 F)
2002
-3.3 C (26.1 F)
2003
-4.4 C (24.1 F)
2004
-7.8 C (18.0 F)
2005
-5.0 C (23.0 F)
2006
-9.4 C (15.1 F)
2007
-8.3 C (17.1 F)
2008
-10.0 C (14.0 F)
2009
-7.8 C (18.0 F)
2010
-10.0 C (14.0 F)
2011
-7.2 C (19.0 F)
2012
-4.4 C (24.1 F)
2013
-9.4 C (15.1 F)
2014
-9.4 C (15.1 F)
2015
-3.9 C (25.0 F)
2016
-6.1 C (21.0 F)
2017
-3.3 C (26.1 F)
2018
-5.0 C (23.0 F)
2019
-5.0 C (23.0 F)
2020
-5.6 C (21.9 F)
Wettest day (Rx1day)
The wettest day of the year at Coupeville 1 S, 1895 to 2020. The record is 62.2 mm (2.4 in) in 1948, marked on the chart; the median year is 24.6 mm (1.0 in).
Wettest day (Rx1day) at Coupeville 1 S by year
Year
Wettest day (Rx1day)
1895
15.2 mm (0.6 in)
1896
23.1 mm (0.9 in)
1897
33.3 mm (1.3 in)
1898
32.0 mm (1.3 in)
1899
33.0 mm (1.3 in)
1900
25.1 mm (1.0 in)
1901
21.8 mm (0.9 in)
1902
25.9 mm (1.0 in)
1903
27.4 mm (1.1 in)
1904
22.1 mm (0.9 in)
1905
29.0 mm (1.1 in)
1906
28.4 mm (1.1 in)
1907
31.8 mm (1.3 in)
1908
20.1 mm (0.8 in)
1909
19.6 mm (0.8 in)
1916
36.8 mm (1.4 in)
1917
23.4 mm (0.9 in)
1918
23.4 mm (0.9 in)
1919
22.9 mm (0.9 in)
1920
22.6 mm (0.9 in)
1921
45.7 mm (1.8 in)
1922
15.5 mm (0.6 in)
1923
24.4 mm (1.0 in)
1924
17.0 mm (0.7 in)
1925
19.8 mm (0.8 in)
1926
29.7 mm (1.2 in)
1927
29.5 mm (1.2 in)
1928
18.3 mm (0.7 in)
1929
13.7 mm (0.5 in)
1930
25.4 mm (1.0 in)
1931
31.0 mm (1.2 in)
1932
35.8 mm (1.4 in)
1933
30.2 mm (1.2 in)
1934
19.1 mm (0.8 in)
1935
27.2 mm (1.1 in)
1936
29.0 mm (1.1 in)
1937
20.3 mm (0.8 in)
1938
13.5 mm (0.5 in)
1939
23.6 mm (0.9 in)
1940
26.2 mm (1.0 in)
1941
22.9 mm (0.9 in)
1942
19.6 mm (0.8 in)
1943
23.9 mm (0.9 in)
1944
38.1 mm (1.5 in)
1945
25.1 mm (1.0 in)
1946
53.8 mm (2.1 in)
1947
24.6 mm (1.0 in)
1948
62.2 mm (2.4 in)
1949
27.2 mm (1.1 in)
1950
22.9 mm (0.9 in)
1951
27.7 mm (1.1 in)
1952
29.7 mm (1.2 in)
1953
18.3 mm (0.7 in)
1954
20.1 mm (0.8 in)
1955
15.7 mm (0.6 in)
1956
21.1 mm (0.8 in)
1957
25.7 mm (1.0 in)
1958
21.8 mm (0.9 in)
1959
35.1 mm (1.4 in)
1960
27.7 mm (1.1 in)
1961
19.1 mm (0.8 in)
1962
32.3 mm (1.3 in)
1963
21.8 mm (0.9 in)
1964
24.1 mm (0.9 in)
1965
22.4 mm (0.9 in)
1966
40.6 mm (1.6 in)
1967
34.8 mm (1.4 in)
1968
18.5 mm (0.7 in)
1969
21.8 mm (0.9 in)
1970
19.8 mm (0.8 in)
1971
36.6 mm (1.4 in)
1972
32.3 mm (1.3 in)
1973
18.8 mm (0.7 in)
1974
26.9 mm (1.1 in)
1975
30.5 mm (1.2 in)
1976
18.5 mm (0.7 in)
1977
25.9 mm (1.0 in)
1978
25.1 mm (1.0 in)
1979
24.6 mm (1.0 in)
1980
20.3 mm (0.8 in)
1981
19.8 mm (0.8 in)
1982
18.0 mm (0.7 in)
1983
57.2 mm (2.3 in)
1984
30.2 mm (1.2 in)
1985
21.1 mm (0.8 in)
1986
26.7 mm (1.1 in)
1987
16.3 mm (0.6 in)
1988
18.3 mm (0.7 in)
1989
24.9 mm (1.0 in)
1990
45.2 mm (1.8 in)
1991
22.1 mm (0.9 in)
1992
20.3 mm (0.8 in)
1993
23.6 mm (0.9 in)
1994
29.2 mm (1.1 in)
1995
38.9 mm (1.5 in)
1996
49.8 mm (2.0 in)
1997
24.6 mm (1.0 in)
1998
33.0 mm (1.3 in)
1999
26.7 mm (1.1 in)
2000
16.8 mm (0.7 in)
2001
23.9 mm (0.9 in)
2002
16.5 mm (0.6 in)
2003
21.3 mm (0.8 in)
2004
20.8 mm (0.8 in)
2005
28.4 mm (1.1 in)
2006
26.2 mm (1.0 in)
2007
18.8 mm (0.7 in)
2008
21.6 mm (0.9 in)
2009
41.4 mm (1.6 in)
2010
33.0 mm (1.3 in)
2011
31.7 mm (1.2 in)
2012
31.2 mm (1.2 in)
2013
17.8 mm (0.7 in)
2014
23.1 mm (0.9 in)
2015
29.2 mm (1.1 in)
2016
24.4 mm (1.0 in)
2017
23.4 mm (0.9 in)
2018
31.5 mm (1.2 in)
2019
17.8 mm (0.7 in)
2020
42.2 mm (1.7 in)
Wettest five days (Rx5day)
The wettest five days of the year at Coupeville 1 S, 1895 to 2020. The record is 101.4 mm (4.0 in) in 2015, marked on the chart; the median year is 41.6 mm (1.6 in).
Wettest five days (Rx5day) at Coupeville 1 S by year
Year
Wettest five days (Rx5day)
1895
26.9 mm (1.1 in)
1896
39.3 mm (1.5 in)
1897
44.0 mm (1.7 in)
1898
47.2 mm (1.9 in)
1899
73.5 mm (2.9 in)
1900
37.4 mm (1.5 in)
1901
40.8 mm (1.6 in)
1902
50.6 mm (2.0 in)
1903
59.9 mm (2.4 in)
1904
45.3 mm (1.8 in)
1905
73.7 mm (2.9 in)
1906
63.2 mm (2.5 in)
1907
62.3 mm (2.5 in)
1908
28.3 mm (1.1 in)
1909
45.0 mm (1.8 in)
1916
55.8 mm (2.2 in)
1917
51.8 mm (2.0 in)
1918
47.6 mm (1.9 in)
1919
55.4 mm (2.2 in)
1920
49.8 mm (2.0 in)
1921
52.8 mm (2.1 in)
1922
35.5 mm (1.4 in)
1923
40.1 mm (1.6 in)
1924
28.9 mm (1.1 in)
1925
32.8 mm (1.3 in)
1926
41.2 mm (1.6 in)
1927
52.2 mm (2.1 in)
1928
20.7 mm (0.8 in)
1929
24.4 mm (1.0 in)
1930
22.5 mm (0.9 in)
1931
40.9 mm (1.6 in)
1932
52.7 mm (2.1 in)
1933
51.7 mm (2.0 in)
1934
40.0 mm (1.6 in)
1935
31.4 mm (1.2 in)
1936
32.9 mm (1.3 in)
1937
47.5 mm (1.9 in)
1938
20.6 mm (0.8 in)
1939
33.8 mm (1.3 in)
1940
33.8 mm (1.3 in)
1941
31.5 mm (1.2 in)
1942
48.1 mm (1.9 in)
1943
27.2 mm (1.1 in)
1944
38.4 mm (1.5 in)
1945
47.8 mm (1.9 in)
1946
54.8 mm (2.2 in)
1947
36.6 mm (1.4 in)
1948
80.8 mm (3.2 in)
1949
41.4 mm (1.6 in)
1950
39.1 mm (1.5 in)
1951
39.7 mm (1.6 in)
1952
39.9 mm (1.6 in)
1953
34.1 mm (1.3 in)
1954
32.0 mm (1.3 in)
1955
35.3 mm (1.4 in)
1956
40.1 mm (1.6 in)
1957
37.6 mm (1.5 in)
1958
33.0 mm (1.3 in)
1959
65.9 mm (2.6 in)
1960
53.9 mm (2.1 in)
1961
36.2 mm (1.4 in)
1962
39.1 mm (1.5 in)
1963
41.2 mm (1.6 in)
1964
49.6 mm (2.0 in)
1965
60.5 mm (2.4 in)
1966
41.7 mm (1.6 in)
1967
80.8 mm (3.2 in)
1968
32.5 mm (1.3 in)
1969
32.7 mm (1.3 in)
1970
34.0 mm (1.3 in)
1971
76.0 mm (3.0 in)
1972
52.7 mm (2.1 in)
1973
42.2 mm (1.7 in)
1974
53.9 mm (2.1 in)
1975
36.8 mm (1.4 in)
1976
39.4 mm (1.6 in)
1977
52.8 mm (2.1 in)
1978
43.1 mm (1.7 in)
1979
60.0 mm (2.4 in)
1980
43.0 mm (1.7 in)
1981
35.8 mm (1.4 in)
1982
39.4 mm (1.6 in)
1983
66.3 mm (2.6 in)
1984
44.0 mm (1.7 in)
1985
59.0 mm (2.3 in)
1986
59.3 mm (2.3 in)
1987
28.8 mm (1.1 in)
1988
38.1 mm (1.5 in)
1989
49.6 mm (2.0 in)
1990
78.5 mm (3.1 in)
1991
32.8 mm (1.3 in)
1992
23.3 mm (0.9 in)
1993
41.1 mm (1.6 in)
1994
31.2 mm (1.2 in)
1995
83.6 mm (3.3 in)
1996
36.1 mm (1.4 in)
1997
80.1 mm (3.2 in)
1998
46.8 mm (1.8 in)
1999
37.4 mm (1.5 in)
2000
34.3 mm (1.4 in)
2001
45.2 mm (1.8 in)
2002
34.6 mm (1.4 in)
2003
54.1 mm (2.1 in)
2004
56.2 mm (2.2 in)
2005
33.8 mm (1.3 in)
2006
50.6 mm (2.0 in)
2007
36.3 mm (1.4 in)
2008
64.8 mm (2.6 in)
2009
50.5 mm (2.0 in)
2010
57.2 mm (2.3 in)
2011
49.7 mm (2.0 in)
2012
60.7 mm (2.4 in)
2013
52.1 mm (2.1 in)
2014
37.1 mm (1.5 in)
2015
101.4 mm (4.0 in)
2016
41.2 mm (1.6 in)
2017
39.4 mm (1.6 in)
2018
50.3 mm (2.0 in)
2019
30.0 mm (1.2 in)
2020
85.4 mm (3.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at Coupeville 1 S, 1895 to 2020. The record is 76 days in 1945, marked on the chart; the median year is 28 days.
Longest dry spell (CDD) at Coupeville 1 S by year
Year
Longest dry spell (CDD)
1895
7 days
1896
38 days
1897
37 days
1898
28 days
1899
17 days
1900
21 days
1901
45 days
1902
26 days
1903
22 days
1904
30 days
1905
17 days
1906
24 days
1907
30 days
1908
25 days
1909
17 days
1916
38 days
1917
33 days
1918
38 days
1919
33 days
1920
41 days
1921
21 days
1922
48 days
1923
27 days
1924
23 days
1925
26 days
1926
36 days
1927
30 days
1928
2 days
1929
21 days
1930
31 days
1931
36 days
1932
28 days
1933
27 days
1934
31 days
1935
23 days
1936
42 days
1937
16 days
1938
3 days
1939
10 days
1940
10 days
1941
17 days
1942
38 days
1943
40 days
1944
25 days
1945
76 days
1946
27 days
1947
32 days
1948
18 days
1949
16 days
1950
23 days
1951
40 days
1952
37 days
1953
35 days
1954
24 days
1955
45 days
1956
41 days
1957
28 days
1958
61 days
1959
23 days
1960
44 days
1961
42 days
1962
27 days
1963
19 days
1964
15 days
1965
27 days
1966
27 days
1967
47 days
1968
29 days
1969
25 days
1970
27 days
1971
41 days
1972
32 days
1973
23 days
1974
34 days
1975
19 days
1976
17 days
1977
30 days
1978
15 days
1979
30 days
1980
26 days
1981
37 days
1982
29 days
1983
15 days
1984
32 days
1985
30 days
1986
52 days
1987
34 days
1988
31 days
1989
25 days
1990
43 days
1991
32 days
1992
15 days
1993
23 days
1994
18 days
1995
21 days
1996
27 days
1997
40 days
1998
38 days
1999
20 days
2000
33 days
2001
28 days
2002
19 days
2003
32 days
2004
28 days
2005
16 days
2006
46 days
2007
16 days
2008
26 days
2009
29 days
2010
36 days
2011
27 days
2012
32 days
2013
35 days
2014
24 days
2015
34 days
2016
27 days
2017
58 days
2018
32 days
2019
29 days
2020
37 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
84 years with a frost
Across 84 years with a frost, the median last spring frost at Coupeville 1 S falls on 7 April and the median first autumn frost on 2 November, which leaves a median of 211 days between them.
In 1978 to 2018 the median growing season was 222 days. That is 9 days more than in 1896 to 1952.
Fitted over all years, the growing season changes by +1.6 days per decade at this station.
Frost dates and growing season at Coupeville 1 S
Measure
Median, all years
Earliest period (1896 to 1952)
Recent period (1978 to 2018)
Recent against earliest
Fitted trend
Last spring frost
7 April
8 April
29 March
10 days earlier
-1.5 days per decade
First autumn frost
2 November
8 November
4 November
4 days earlier
+0.1 days per decade
Growing days
211 days
213 days
222 days
9 days more
+1.6 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
99 years, 1896 to 2019
A day with at least 24.7 mm (1.0 in) of rain is expected about once in 2 years. A day with at least 55.8 mm (2.2 in) of rain is expected about once in 100 years.
Rainfall return levels at Coupeville 1 S: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
24.7 mm (1.0 in)
5 years
31.6 mm (1.2 in)
10 years
36.6 mm (1.4 in)
25 years
43.7 mm (1.7 in)
50 years
49.5 mm (1.9 in)
100 years
55.8 mm (2.2 in)
Longer than the 99 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, 99 years of values from 1896 to 2019.
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: 62.2 mm (2.4 in) in 1948; 57.2 mm (2.3 in) in 1983; 53.8 mm (2.1 in) in 1946.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Coupeville 1 S standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Coupeville 1 S 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.