Record envelope, standing records and threshold days for Shelton (USC00457584), Washington, United States, with 69 years of record.
Key Facts for Shelton
Shelton (USC00457584) is a weather station in Washington, United States at 47.20 latitude and -123.10 longitude, 7 m (22 ft) above sea level.
The station reports from 1931 to 1999, 69 years of record.
1,464 records set at Shelton still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Shelton tied a daily record low minimum temperature of -1.7 C (28.9 F) on 11 April 1999.
About the Station
Location: Washington, United States, 47.20 latitude, -123.10 longitude.
Elevation: 7 m (22 ft).
Period of record: 1931 to 1999, 69 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 Shelton. 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 Shelton, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
20.0 C (68.0 F)
-18.9 C (-2.0 F)
n/a
n/a
Feb
22.2 C (72.0 F)
-17.8 C (0.0 F)
n/a
n/a
Mar
24.4 C (75.9 F)
-8.3 C (17.1 F)
n/a
n/a
Apr
31.7 C (89.1 F)
-5.6 C (21.9 F)
n/a
n/a
May
36.7 C (98.1 F)
-3.9 C (25.0 F)
n/a
n/a
Jun
38.9 C (102.0 F)
0.0 C (32.0 F)
n/a
n/a
Jul
40.0 C (104.0 F)
2.2 C (36.0 F)
n/a
n/a
Aug
41.7 C (107.1 F)
1.1 C (34.0 F)
n/a
n/a
Sep
37.2 C (99.0 F)
-1.1 C (30.0 F)
n/a
n/a
Oct
30.6 C (87.1 F)
-5.6 C (21.9 F)
n/a
n/a
Nov
21.1 C (70.0 F)
-15.0 C (5.0 F)
n/a
n/a
Dec
18.9 C (66.0 F)
-14.4 C (6.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Shelton still stand. 1934 holds the most, with 54.
Standing records at Shelton by the year they were set
Year set
Standing records
1931
14
1932
40
1933
44
1934
54
1935
44
1936
41
1937
29
1938
23
1939
21
1940
22
1941
19
1942
19
1943
23
1944
25
1945
34
1946
22
1947
18
1948
12
1949
37
1950
42
1951
23
1952
20
1953
18
1954
18
1955
38
1956
29
1957
29
1958
23
1959
15
1960
20
1961
20
1962
16
1963
23
1964
15
1965
20
1966
8
1967
12
1968
20
1969
19
1970
13
1971
14
1972
38
1973
13
1974
13
1975
15
1976
14
1977
17
1978
19
1979
15
1980
19
1981
16
1982
7
1983
9
1984
16
1985
30
1986
23
1987
20
1988
13
1989
20
1990
23
1991
19
1992
15
1993
10
1994
15
1995
8
1996
21
1997
22
1998
14
1999
4
All-Time Record Progression
2 new records
2 all-time records were set at Shelton between 30 December 1968 and 9 August 1981. Each dot is a new record.
When Shelton set new all-time records
Date
Kind
Detail
1968-12-30
Record low maximum temperature
Record low maximum temperature -6.7 C (19.9 F)
1981-08-09
Record high maximum temperature
Record high maximum temperature 41.7 C (107.1 F)
Wettest Day of Each Month
Jan: 145.5 mm (5.7 in)
The wettest day on record for each calendar month at Shelton. The most was 145.5 mm (5.7 in) on 22 January 1935.
Record daily precipitation for each month at Shelton
Month
Record daily precipitation (mm)
Date
Jan
145.5 mm (5.7 in)
22 January 1935
Feb
114.3 mm (4.5 in)
7 February 1945
Mar
99.3 mm (3.9 in)
19 March 1997
Apr
103.4 mm (4.1 in)
14 April 1937
May
50.0 mm (2.0 in)
16 May 1965
Jun
43.7 mm (1.7 in)
7 June 1936
Jul
38.6 mm (1.5 in)
5 July 1961
Aug
50.8 mm (2.0 in)
25 August 1977
Sep
70.4 mm (2.8 in)
21 September 1972
Oct
96.5 mm (3.8 in)
31 October 1994
Nov
122.9 mm (4.8 in)
19 November 1962
Dec
105.9 mm (4.2 in)
9 December 1987
Period of Record Coverage
1931 to 1999
Complete yearUnder 90 percent of days
69 years of record at Shelton, 1931 to 1999. 8 years have data for under 90 percent of days and are left out of rankings: 1931, 1943, 1948, 1963, 1964, 1995, 1996, 1999.
Cooler than the station meanWarmer than the station mean
One stripe for each of 59 complete years at Shelton, 1932 to 1998. Blue stripes are years cooler than the station's own mean of 10.8 C (51.4 F); red stripes are warmer. The coolest year was 1955, at 9.3 C (48.7 F), and the warmest was 1992, at 12.0 C (53.6 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at Shelton as warming stripes, 1932 to 1998
Year
Annual mean temperature
Difference from the station mean
1932
10.4 C
-0.35 C
1934
12.0 C
+1.25 C
1935
10.2 C
-0.61 C
1937
10.8 C
0.00 C
1938
11.1 C
+0.35 C
1939
11.3 C
+0.51 C
1940
11.7 C
+0.95 C
1941
11.4 C
+0.61 C
1942
10.9 C
+0.12 C
1944
10.5 C
-0.22 C
1945
10.4 C
-0.36 C
1946
10.4 C
-0.34 C
1947
10.9 C
+0.14 C
1949
9.9 C
-0.82 C
1950
9.8 C
-0.93 C
1951
10.2 C
-0.53 C
1952
10.4 C
-0.40 C
1953
10.9 C
+0.14 C
1954
10.1 C
-0.70 C
1955
9.3 C
-1.48 C
1956
10.1 C
-0.69 C
1957
10.5 C
-0.31 C
1958
11.7 C
+0.96 C
1959
10.4 C
-0.35 C
1960
10.5 C
-0.31 C
1961
11.0 C
+0.19 C
1962
10.5 C
-0.27 C
1965
11.0 C
+0.23 C
1966
10.9 C
+0.09 C
1967
11.4 C
+0.60 C
1968
10.6 C
-0.15 C
1969
10.5 C
-0.30 C
1970
10.5 C
-0.27 C
1971
10.3 C
-0.42 C
1972
10.2 C
-0.58 C
1973
10.5 C
-0.29 C
1974
10.5 C
-0.22 C
1975
10.0 C
-0.75 C
1976
10.3 C
-0.47 C
1977
10.7 C
-0.04 C
1978
11.1 C
+0.36 C
1979
11.1 C
+0.34 C
1980
11.0 C
+0.28 C
1981
11.3 C
+0.57 C
1982
10.5 C
-0.24 C
1983
11.1 C
+0.29 C
1984
10.6 C
-0.16 C
1985
10.1 C
-0.62 C
1986
11.6 C
+0.81 C
1987
11.7 C
+0.97 C
1988
11.1 C
+0.32 C
1989
11.0 C
+0.21 C
1990
11.1 C
+0.37 C
1991
11.2 C
+0.42 C
1992
12.0 C
+1.26 C
1993
10.8 C
+0.03 C
1994
11.2 C
+0.46 C
1997
10.9 C
+0.15 C
1998
11.1 C
+0.36 C
The fitted trend in annual mean temperature here over 1932 to 1998 is 0.06 C (-0.01 to 0.14) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.11 F (-0.03 to 0.25) per decade. The slope is a straight line fitted to 59 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Shelton
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.06 C (-0.01 to 0.14) per decade
0.11 F (-0.03 to 0.25) per decade
1932 to 1998
59
Not clearly different from zero
Mean daily maximum
-0.09 C (-0.19 to 0.00) per decade
-0.17 F (-0.33 to -0.01) per decade
1932 to 1998
59
Fall
Mean daily minimum
0.2 C (0.1 to 0.3) per decade
0.4 F (0.3 to 0.5) per decade
1932 to 1998
59
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
1931 to 1999
Yearly extremes at Shelton: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
41.7 C (107.1 F)
1981
35.6 C (96.1 F)
69
Coldest night (TNn)
-18.9 C (-2.0 F)
1950
-9.4 C (15.1 F)
69
Wettest day (Rx1day)
145.5 mm (5.7 in)
1935
74.9 mm (2.9 in)
69
Wettest five days (Rx5day)
334.3 mm (13.2 in)
1935
161.3 mm (6.4 in)
69
Longest dry spell (CDD)
64 days
1998
34 days
69
Hottest day (TXx)
The hottest day of the year at Shelton, 1931 to 1999. The record is 41.7 C (107.1 F) in 1981, marked on the chart; the median year is 35.6 C (96.1 F).
Hottest day (TXx) at Shelton by year
Year
Hottest day (TXx)
1931
27.8 C (82.0 F)
1932
33.9 C (93.0 F)
1933
36.7 C (98.1 F)
1934
35.6 C (96.1 F)
1935
38.3 C (100.9 F)
1936
34.4 C (93.9 F)
1937
35.0 C (95.0 F)
1938
36.7 C (98.1 F)
1939
36.1 C (97.0 F)
1940
35.6 C (96.1 F)
1941
40.0 C (104.0 F)
1942
40.0 C (104.0 F)
1943
31.1 C (88.0 F)
1944
37.8 C (100.0 F)
1945
36.7 C (98.1 F)
1946
36.1 C (97.0 F)
1947
33.3 C (91.9 F)
1948
35.0 C (95.0 F)
1949
33.9 C (93.0 F)
1950
35.0 C (95.0 F)
1951
35.6 C (96.1 F)
1952
35.6 C (96.1 F)
1953
33.9 C (93.0 F)
1954
29.4 C (84.9 F)
1955
37.2 C (99.0 F)
1956
38.9 C (102.0 F)
1957
32.2 C (90.0 F)
1958
37.2 C (99.0 F)
1959
36.1 C (97.0 F)
1960
37.8 C (100.0 F)
1961
37.8 C (100.0 F)
1962
33.9 C (93.0 F)
1963
33.9 C (93.0 F)
1964
31.1 C (88.0 F)
1965
37.2 C (99.0 F)
1966
32.2 C (90.0 F)
1967
35.6 C (96.1 F)
1968
35.0 C (95.0 F)
1969
34.4 C (93.9 F)
1970
35.0 C (95.0 F)
1971
36.1 C (97.0 F)
1972
35.6 C (96.1 F)
1973
34.4 C (93.9 F)
1974
33.3 C (91.9 F)
1975
32.2 C (90.0 F)
1976
30.6 C (87.1 F)
1977
38.3 C (100.9 F)
1978
38.9 C (102.0 F)
1979
36.7 C (98.1 F)
1980
32.2 C (90.0 F)
1981
41.7 C (107.1 F)
1982
35.6 C (96.1 F)
1983
36.7 C (98.1 F)
1984
32.8 C (91.0 F)
1985
35.6 C (96.1 F)
1986
34.4 C (93.9 F)
1987
35.0 C (95.0 F)
1988
37.2 C (99.0 F)
1989
32.8 C (91.0 F)
1990
36.1 C (97.0 F)
1991
36.7 C (98.1 F)
1992
35.0 C (95.0 F)
1993
35.0 C (95.0 F)
1994
37.8 C (100.0 F)
1995
35.0 C (95.0 F)
1996
35.6 C (96.1 F)
1997
32.8 C (91.0 F)
1998
37.8 C (100.0 F)
1999
27.8 C (82.0 F)
Coldest night (TNn)
The coldest night of the year at Shelton, 1931 to 1999. The record is -18.9 C (-2.0 F) in 1950, marked on the chart; the median year is -9.4 C (15.1 F).
Coldest night (TNn) at Shelton by year
Year
Coldest night (TNn)
1931
-6.7 C (19.9 F)
1932
-14.4 C (6.1 F)
1933
-13.3 C (8.1 F)
1934
-4.4 C (24.1 F)
1935
-12.2 C (10.0 F)
1936
-9.4 C (15.1 F)
1937
-13.3 C (8.1 F)
1938
-6.1 C (21.0 F)
1939
-3.9 C (25.0 F)
1940
-7.2 C (19.0 F)
1941
-8.9 C (16.0 F)
1942
-10.6 C (12.9 F)
1943
-13.9 C (7.0 F)
1944
-8.3 C (17.1 F)
1945
-7.2 C (19.0 F)
1946
-7.2 C (19.0 F)
1947
-11.7 C (10.9 F)
1948
-7.8 C (18.0 F)
1949
-15.0 C (5.0 F)
1950
-18.9 C (-2.0 F)
1951
-10.6 C (12.9 F)
1952
-11.7 C (10.9 F)
1953
-4.4 C (24.1 F)
1954
-11.7 C (10.9 F)
1955
-15.0 C (5.0 F)
1956
-10.0 C (14.0 F)
1957
-15.6 C (3.9 F)
1958
-6.7 C (19.9 F)
1959
-11.7 C (10.9 F)
1960
-7.8 C (18.0 F)
1961
-6.1 C (21.0 F)
1962
-12.8 C (9.0 F)
1963
-12.2 C (10.0 F)
1964
-11.1 C (12.0 F)
1965
-5.6 C (21.9 F)
1966
-2.8 C (27.0 F)
1967
-6.7 C (19.9 F)
1968
-10.6 C (12.9 F)
1969
-13.9 C (7.0 F)
1970
-5.0 C (23.0 F)
1971
-6.7 C (19.9 F)
1972
-13.9 C (7.0 F)
1973
-11.1 C (12.0 F)
1974
-11.1 C (12.0 F)
1975
-5.0 C (23.0 F)
1976
-6.1 C (21.0 F)
1977
-6.1 C (21.0 F)
1978
-11.7 C (10.9 F)
1979
-13.9 C (7.0 F)
1980
-12.2 C (10.0 F)
1981
-4.4 C (24.1 F)
1982
-11.1 C (12.0 F)
1983
-13.3 C (8.1 F)
1984
-7.8 C (18.0 F)
1985
-14.4 C (6.1 F)
1986
-5.0 C (23.0 F)
1987
-5.6 C (21.9 F)
1988
-6.7 C (19.9 F)
1989
-12.2 C (10.0 F)
1990
-14.4 C (6.1 F)
1991
-6.7 C (19.9 F)
1992
-5.6 C (21.9 F)
1993
-9.4 C (15.1 F)
1994
-7.2 C (19.0 F)
1995
-7.2 C (19.0 F)
1996
-9.4 C (15.1 F)
1997
-8.3 C (17.1 F)
1998
-13.9 C (7.0 F)
1999
-4.4 C (24.1 F)
Wettest day (Rx1day)
The wettest day of the year at Shelton, 1931 to 1999. The record is 145.5 mm (5.7 in) in 1935, marked on the chart; the median year is 74.9 mm (2.9 in).
Wettest day (Rx1day) at Shelton by year
Year
Wettest day (Rx1day)
1931
84.3 mm (3.3 in)
1932
84.1 mm (3.3 in)
1933
103.6 mm (4.1 in)
1934
85.9 mm (3.4 in)
1935
145.5 mm (5.7 in)
1936
72.9 mm (2.9 in)
1937
103.4 mm (4.1 in)
1938
53.6 mm (2.1 in)
1939
67.1 mm (2.6 in)
1940
48.8 mm (1.9 in)
1941
99.3 mm (3.9 in)
1942
81.3 mm (3.2 in)
1943
86.6 mm (3.4 in)
1944
37.6 mm (1.5 in)
1945
114.3 mm (4.5 in)
1946
45.0 mm (1.8 in)
1947
87.9 mm (3.5 in)
1948
52.8 mm (2.1 in)
1949
91.4 mm (3.6 in)
1950
65.0 mm (2.6 in)
1951
97.0 mm (3.8 in)
1952
40.9 mm (1.6 in)
1953
68.6 mm (2.7 in)
1954
60.2 mm (2.4 in)
1955
102.1 mm (4.0 in)
1956
100.3 mm (3.9 in)
1957
50.0 mm (2.0 in)
1958
62.0 mm (2.4 in)
1959
117.1 mm (4.6 in)
1960
74.9 mm (2.9 in)
1961
75.2 mm (3.0 in)
1962
122.9 mm (4.8 in)
1963
53.3 mm (2.1 in)
1964
52.1 mm (2.1 in)
1965
79.2 mm (3.1 in)
1966
93.7 mm (3.7 in)
1967
74.2 mm (2.9 in)
1968
82.3 mm (3.2 in)
1969
33.8 mm (1.3 in)
1970
59.2 mm (2.3 in)
1971
55.4 mm (2.2 in)
1972
79.5 mm (3.1 in)
1973
57.4 mm (2.3 in)
1974
50.8 mm (2.0 in)
1975
82.6 mm (3.3 in)
1976
48.3 mm (1.9 in)
1977
64.5 mm (2.5 in)
1978
54.6 mm (2.1 in)
1979
73.7 mm (2.9 in)
1980
56.6 mm (2.2 in)
1981
64.8 mm (2.6 in)
1982
97.5 mm (3.8 in)
1983
57.7 mm (2.3 in)
1984
50.8 mm (2.0 in)
1985
62.7 mm (2.5 in)
1986
110.5 mm (4.4 in)
1987
105.9 mm (4.2 in)
1988
73.2 mm (2.9 in)
1989
82.8 mm (3.3 in)
1990
117.6 mm (4.6 in)
1991
79.2 mm (3.1 in)
1992
56.6 mm (2.2 in)
1993
55.9 mm (2.2 in)
1994
96.5 mm (3.8 in)
1995
73.2 mm (2.9 in)
1996
92.2 mm (3.6 in)
1997
99.3 mm (3.9 in)
1998
98.8 mm (3.9 in)
1999
96.8 mm (3.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Shelton, 1931 to 1999. The record is 334.3 mm (13.2 in) in 1935, marked on the chart; the median year is 161.3 mm (6.4 in).
Wettest five days (Rx5day) at Shelton by year
Year
Wettest five days (Rx5day)
1931
178.5 mm (7.0 in)
1932
197.9 mm (7.8 in)
1933
322.0 mm (12.7 in)
1934
199.2 mm (7.8 in)
1935
334.3 mm (13.2 in)
1936
151.8 mm (6.0 in)
1937
222.3 mm (8.8 in)
1938
136.7 mm (5.4 in)
1939
189.7 mm (7.5 in)
1940
119.0 mm (4.7 in)
1941
161.3 mm (6.4 in)
1942
147.4 mm (5.8 in)
1943
154.5 mm (6.1 in)
1944
85.3 mm (3.4 in)
1945
164.6 mm (6.5 in)
1946
126.7 mm (5.0 in)
1947
208.2 mm (8.2 in)
1948
134.3 mm (5.3 in)
1949
173.3 mm (6.8 in)
1950
137.7 mm (5.4 in)
1951
225.0 mm (8.9 in)
1952
104.9 mm (4.1 in)
1953
160.2 mm (6.3 in)
1954
190.8 mm (7.5 in)
1955
164.3 mm (6.5 in)
1956
176.1 mm (6.9 in)
1957
142.5 mm (5.6 in)
1958
124.3 mm (4.9 in)
1959
240.0 mm (9.4 in)
1960
132.4 mm (5.2 in)
1961
151.9 mm (6.0 in)
1962
147.1 mm (5.8 in)
1963
132.3 mm (5.2 in)
1964
123.2 mm (4.9 in)
1965
128.7 mm (5.1 in)
1966
158.0 mm (6.2 in)
1967
130.8 mm (5.1 in)
1968
188.5 mm (7.4 in)
1969
93.6 mm (3.7 in)
1970
139.6 mm (5.5 in)
1971
118.1 mm (4.6 in)
1972
197.7 mm (7.8 in)
1973
156.5 mm (6.2 in)
1974
164.6 mm (6.5 in)
1975
196.2 mm (7.7 in)
1976
143.1 mm (5.6 in)
1977
182.6 mm (7.2 in)
1978
92.9 mm (3.7 in)
1979
261.5 mm (10.3 in)
1980
137.5 mm (5.4 in)
1981
203.8 mm (8.0 in)
1982
206.0 mm (8.1 in)
1983
157.0 mm (6.2 in)
1984
144.8 mm (5.7 in)
1985
189.9 mm (7.5 in)
1986
223.3 mm (8.8 in)
1987
167.7 mm (6.6 in)
1988
140.0 mm (5.5 in)
1989
135.1 mm (5.3 in)
1990
215.1 mm (8.5 in)
1991
174.0 mm (6.9 in)
1992
157.3 mm (6.2 in)
1993
126.8 mm (5.0 in)
1994
217.2 mm (8.6 in)
1995
181.8 mm (7.2 in)
1996
207.3 mm (8.2 in)
1997
256.0 mm (10.1 in)
1998
199.9 mm (7.9 in)
1999
165.4 mm (6.5 in)
Longest dry spell (CDD)
The longest dry spell of the year at Shelton, 1931 to 1999. The record is 64 days in 1998, marked on the chart; the median year is 34 days.
Longest dry spell (CDD) at Shelton by year
Year
Longest dry spell (CDD)
1931
15 days
1932
18 days
1933
27 days
1934
31 days
1935
39 days
1936
43 days
1937
45 days
1938
58 days
1939
36 days
1940
44 days
1941
23 days
1942
49 days
1943
27 days
1944
50 days
1945
41 days
1946
46 days
1947
20 days
1948
17 days
1949
20 days
1950
30 days
1951
51 days
1952
41 days
1953
30 days
1954
25 days
1955
44 days
1956
37 days
1957
21 days
1958
36 days
1959
47 days
1960
55 days
1961
40 days
1962
27 days
1963
27 days
1964
21 days
1965
34 days
1966
41 days
1967
42 days
1968
25 days
1969
24 days
1970
31 days
1971
40 days
1972
32 days
1973
40 days
1974
30 days
1975
31 days
1976
24 days
1977
29 days
1978
30 days
1979
33 days
1980
43 days
1981
46 days
1982
21 days
1983
25 days
1984
43 days
1985
47 days
1986
53 days
1987
44 days
1988
33 days
1989
43 days
1990
41 days
1991
45 days
1992
40 days
1993
48 days
1994
32 days
1995
29 days
1996
16 days
1997
26 days
1998
64 days
1999
8 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
59 years with a frost
Across 59 years with a frost, the median last spring frost at Shelton falls on 29 April and the median first autumn frost on 21 October, which leaves a median of 175 days between them.
Fitted over all years, the growing season changes by +3.7 days per decade at this station.
Frost dates and growing season at Shelton
Measure
Median, all years
Earliest period
Recent period (1967 to 1998)
Recent against earliest
Fitted trend
Last spring frost
29 April
n/a
22 April
n/a
-4.3 days per decade
First autumn frost
21 October
n/a
19 October
n/a
-0.6 days per decade
Growing days
175 days
n/a
179 days
n/a
+3.7 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
63 years, 1932 to 1998
A day with at least 75.3 mm (3.0 in) of rain is expected about once in 2 years. A day with at least 140.8 mm (5.5 in) of rain is expected about once in 100 years.
Rainfall return levels at Shelton: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
75.3 mm (3.0 in)
5 years
96.9 mm (3.8 in)
10 years
109.4 mm (4.3 in)
25 years
123.3 mm (4.9 in)
50 years
132.5 mm (5.2 in)
100 years
140.8 mm (5.5 in)
Longer than the 63 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, 63 years of values from 1932 to 1998.
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: 145.5 mm (5.7 in) in 1935; 122.9 mm (4.8 in) in 1962; 117.6 mm (4.6 in) in 1990.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Shelton standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Shelton 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.