Record envelope, standing records and threshold days for Silverton (USC00357823), Oregon, United States, with 64 years of record.
Key Facts for Silverton
Silverton (USC00357823) is a weather station in Oregon, United States at 45.01 latitude and -122.77 longitude, 124 m (408 ft) above sea level.
The station reports from 1962 to 2025, 64 years of record.
1,464 records set at Silverton still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Silverton tied a daily record high minimum temperature of 17.2 C (63.0 F) on 5 September 2025.
About the Station
Location: Oregon, United States, 45.01 latitude, -122.77 longitude.
Elevation: 124 m (408 ft).
Period of record: 1962 to 2025, 64 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
15 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 Silverton. The lines show the 2026 daily maximum and minimum. 15 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Silverton, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
23.9 C (75.0 F)
-15.6 C (3.9 F)
12.2 C (54.0 F)
-3.9 C (25.0 F)
Feb
21.7 C (71.1 F)
-14.4 C (6.1 F)
17.8 C (64.0 F)
-7.2 C (19.0 F)
Mar
26.1 C (79.0 F)
-7.2 C (19.0 F)
25.0 C (77.0 F)
-2.2 C (28.0 F)
Apr
30.6 C (87.1 F)
-2.2 C (28.0 F)
24.4 C (75.9 F)
1.1 C (34.0 F)
May
38.9 C (102.0 F)
0.0 C (32.0 F)
27.2 C (81.0 F)
2.2 C (36.0 F)
Jun
45.0 C (113.0 F)
2.8 C (37.0 F)
34.4 C (93.9 F)
6.1 C (43.0 F)
Jul
39.4 C (102.9 F)
5.6 C (42.1 F)
35.6 C (96.1 F)
7.8 C (46.0 F)
Aug
40.0 C (104.0 F)
4.4 C (39.9 F)
37.8 C (100.0 F)
10.6 C (51.1 F)
Sep
39.4 C (102.9 F)
1.1 C (34.0 F)
31.1 C (88.0 F)
11.7 C (53.1 F)
Oct
32.8 C (91.0 F)
-5.0 C (23.0 F)
n/a
n/a
Nov
22.2 C (72.0 F)
-10.6 C (12.9 F)
n/a
n/a
Dec
18.9 C (66.0 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 Silverton still stand. 1972 holds the most, with 53.
Standing records at Silverton by the year they were set
Year set
Standing records
1962
5
1963
31
1964
42
1965
32
1966
22
1967
20
1968
29
1969
31
1970
24
1971
33
1972
53
1973
29
1974
29
1975
32
1976
25
1977
25
1978
19
1979
31
1980
33
1981
22
1982
29
1983
14
1984
28
1985
38
1986
31
1987
33
1988
22
1989
23
1990
28
1991
23
1992
25
1993
26
1994
20
1995
25
1996
28
1997
8
1998
15
1999
15
2000
13
2001
16
2002
15
2003
25
2004
11
2005
18
2006
15
2007
8
2008
28
2009
14
2010
11
2011
15
2012
20
2013
18
2014
26
2015
13
2016
18
2017
16
2018
12
2019
22
2020
15
2021
21
2022
12
2023
26
2024
37
2025
21
All-Time Record Progression
7 new records
7 all-time records were set at Silverton between 27 October 1994 and 28 June 2021. Each dot is a new record.
When Silverton set new all-time records
Date
Kind
Detail
1994-10-27
Record daily precipitation
Record daily precipitation 78.7 mm (3.1 in)
1994-11-01
Record daily precipitation
Record daily precipitation 81.8 mm (3.2 in)
1996-11-19
Record daily precipitation
Record daily precipitation 94.5 mm (3.7 in)
2009-07-29
Record high minimum temperature
Record high minimum temperature 22.8 C (73.0 F)
2021-06-27
Record high maximum temperature
Record high maximum temperature 43.3 C (109.9 F)
2021-06-27
Record high minimum temperature
Record high minimum temperature 26.7 C (80.1 F)
2021-06-28
Record high maximum temperature
Record high maximum temperature 45.0 C (113.0 F)
Wettest Day of Each Month
Nov: 94.5 mm (3.7 in)
The wettest day on record for each calendar month at Silverton. The most was 94.5 mm (3.7 in) on 19 November 1996.
Record daily precipitation for each month at Silverton
Month
Record daily precipitation (mm)
Date
Jan
62.0 mm (2.4 in)
2 January 1997
Feb
72.4 mm (2.9 in)
6 February 1996
Mar
52.1 mm (2.1 in)
22 March 1998
Apr
48.3 mm (1.9 in)
9 April 1971
May
59.7 mm (2.4 in)
17 May 1972
Jun
43.9 mm (1.7 in)
7 June 1985
Jul
50.0 mm (2.0 in)
18 July 1987
Aug
37.1 mm (1.5 in)
23 August 1989
Sep
51.3 mm (2.0 in)
6 September 2013
Oct
78.7 mm (3.1 in)
27 October 1994
Nov
94.5 mm (3.7 in)
19 November 1996
Dec
77.7 mm (3.1 in)
3 December 1987
Period of Record Coverage
1962 to 2025
Complete yearUnder 90 percent of days
64 years of record at Silverton, 1962 to 2025. 5 years have data for under 90 percent of days and are left out of rankings: 1962, 1990, 2021, 2022, 2025.
Cooler than the station meanWarmer than the station mean
One stripe for each of 55 complete years at Silverton, 1963 to 2024. Blue stripes are years cooler than the station's own mean of 11.5 C (52.7 F); red stripes are warmer. The coolest year was 1964, at 10.3 C (50.6 F), and the warmest was 1992, at 12.9 C (55.3 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at Silverton as warming stripes, 1963 to 2024
Year
Annual mean temperature
Difference from the station mean
1963
11.2 C
-0.33 C
1964
10.3 C
-1.18 C
1965
11.1 C
-0.35 C
1966
11.4 C
-0.13 C
1967
12.0 C
+0.46 C
1968
11.1 C
-0.38 C
1969
10.9 C
-0.59 C
1970
11.1 C
-0.37 C
1971
10.3 C
-1.18 C
1972
11.0 C
-0.45 C
1973
11.3 C
-0.17 C
1974
11.4 C
-0.10 C
1975
11.0 C
-0.47 C
1976
10.7 C
-0.76 C
1977
11.2 C
-0.30 C
1978
11.3 C
-0.20 C
1979
11.5 C
-0.02 C
1980
11.2 C
-0.29 C
1981
11.8 C
+0.27 C
1982
11.0 C
-0.48 C
1983
11.4 C
-0.06 C
1984
11.0 C
-0.50 C
1986
12.1 C
+0.58 C
1988
11.7 C
+0.23 C
1989
11.4 C
-0.13 C
1991
11.8 C
+0.29 C
1992
12.9 C
+1.44 C
1993
11.0 C
-0.50 C
1994
11.7 C
+0.25 C
1995
12.3 C
+0.78 C
1996
11.5 C
+0.05 C
1997
11.8 C
+0.26 C
1998
11.9 C
+0.43 C
1999
11.4 C
-0.13 C
2000
11.1 C
-0.42 C
2001
11.4 C
-0.10 C
2002
11.7 C
+0.18 C
2003
12.3 C
+0.76 C
2004
12.1 C
+0.63 C
2005
11.6 C
+0.11 C
2007
11.2 C
-0.30 C
2008
10.8 C
-0.72 C
2009
11.3 C
-0.20 C
2010
11.6 C
+0.12 C
2011
10.6 C
-0.92 C
2012
11.4 C
-0.06 C
2013
11.1 C
-0.37 C
2014
12.4 C
+0.95 C
2015
12.9 C
+1.37 C
2016
12.4 C
+0.93 C
2017
11.7 C
+0.20 C
2018
12.2 C
+0.73 C
2019
11.3 C
-0.17 C
2023
12.0 C
+0.53 C
2024
12.3 C
+0.77 C
The annual mean temperature here has risen by 0.2 C (0.1 to 0.2) per decade over 1963 to 2024. In Fahrenheit: 0.3 F (0.1 to 0.4) per decade. The slope is a straight line fitted to 55 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Silverton
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.2 C (0.1 to 0.2) per decade
0.3 F (0.1 to 0.4) per decade
1963 to 2024
55
Rise
Mean daily maximum
0.04 C (-0.06 to 0.13) per decade
0.1 F (-0.1 to 0.2) per decade
1963 to 2024
55
Not clearly different from zero
Mean daily minimum
0.3 C (0.2 to 0.3) per decade
0.5 F (0.3 to 0.6) per decade
1963 to 2024
55
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
1962 to 2025
Yearly extremes at Silverton: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
45.0 C (113.0 F)
2021
36.4 C (97.5 F)
64
Coldest night (TNn)
-17.8 C (0.0 F)
1972
-7.8 C (18.0 F)
64
Wettest day (Rx1day)
94.5 mm (3.7 in)
1996
48.6 mm (1.9 in)
64
Wettest five days (Rx5day)
205.8 mm (8.1 in)
1996
105.3 mm (4.1 in)
64
Longest dry spell (CDD)
90 days
2018
35 days
64
Hottest day (TXx)
The hottest day of the year at Silverton, 1962 to 2025. The record is 45.0 C (113.0 F) in 2021, marked on the chart; the median year is 36.4 C (97.5 F).
Hottest day (TXx) at Silverton by year
Year
Hottest day (TXx)
1962
32.8 C (91.0 F)
1963
33.9 C (93.0 F)
1964
33.3 C (91.9 F)
1965
37.8 C (100.0 F)
1966
36.1 C (97.0 F)
1967
37.2 C (99.0 F)
1968
36.1 C (97.0 F)
1969
35.0 C (95.0 F)
1970
36.1 C (97.0 F)
1971
36.1 C (97.0 F)
1972
38.3 C (100.9 F)
1973
36.7 C (98.1 F)
1974
36.1 C (97.0 F)
1975
33.9 C (93.0 F)
1976
32.2 C (90.0 F)
1977
40.0 C (104.0 F)
1978
39.4 C (102.9 F)
1979
38.3 C (100.9 F)
1980
37.2 C (99.0 F)
1981
40.0 C (104.0 F)
1982
36.7 C (98.1 F)
1983
38.9 C (102.0 F)
1984
33.3 C (91.9 F)
1985
36.1 C (97.0 F)
1986
35.0 C (95.0 F)
1987
36.7 C (98.1 F)
1988
39.4 C (102.9 F)
1989
33.9 C (93.0 F)
1990
36.1 C (97.0 F)
1991
36.1 C (97.0 F)
1992
38.9 C (102.0 F)
1993
36.7 C (98.1 F)
1994
36.7 C (98.1 F)
1995
36.1 C (97.0 F)
1996
36.1 C (97.0 F)
1997
32.8 C (91.0 F)
1998
35.0 C (95.0 F)
1999
33.9 C (93.0 F)
2000
34.4 C (93.9 F)
2001
33.3 C (91.9 F)
2002
37.8 C (100.0 F)
2003
36.1 C (97.0 F)
2004
37.8 C (100.0 F)
2005
33.9 C (93.0 F)
2006
37.8 C (100.0 F)
2007
37.8 C (100.0 F)
2008
37.2 C (99.0 F)
2009
39.4 C (102.9 F)
2010
36.1 C (97.0 F)
2011
33.3 C (91.9 F)
2012
37.8 C (100.0 F)
2013
32.8 C (91.0 F)
2014
35.6 C (96.1 F)
2015
37.8 C (100.0 F)
2016
37.8 C (100.0 F)
2017
38.9 C (102.0 F)
2018
35.0 C (95.0 F)
2019
37.2 C (99.0 F)
2020
37.2 C (99.0 F)
2021
45.0 C (113.0 F)
2022
36.1 C (97.0 F)
2023
39.4 C (102.9 F)
2024
37.8 C (100.0 F)
2025
37.8 C (100.0 F)
Coldest night (TNn)
The coldest night of the year at Silverton, 1962 to 2025. The record is -17.8 C (0.0 F) in 1972, marked on the chart; the median year is -7.8 C (18.0 F).
Coldest night (TNn) at Silverton by year
Year
Coldest night (TNn)
1962
-5.0 C (23.0 F)
1963
-13.9 C (7.0 F)
1964
-15.0 C (5.0 F)
1965
-10.0 C (14.0 F)
1966
-5.0 C (23.0 F)
1967
-6.7 C (19.9 F)
1968
-13.9 C (7.0 F)
1969
-12.2 C (10.0 F)
1970
-6.7 C (19.9 F)
1971
-7.2 C (19.0 F)
1972
-17.8 C (0.0 F)
1973
-10.0 C (14.0 F)
1974
-12.8 C (9.0 F)
1975
-7.2 C (19.0 F)
1976
-6.1 C (21.0 F)
1977
-8.9 C (16.0 F)
1978
-11.7 C (10.9 F)
1979
-15.6 C (3.9 F)
1980
-13.3 C (8.1 F)
1981
-3.9 C (25.0 F)
1982
-8.9 C (16.0 F)
1983
-14.4 C (6.1 F)
1984
-9.4 C (15.1 F)
1985
-10.6 C (12.9 F)
1986
-3.3 C (26.1 F)
1987
-6.1 C (21.0 F)
1988
-6.1 C (21.0 F)
1989
-14.4 C (6.1 F)
1990
-16.1 C (3.0 F)
1991
-6.1 C (21.0 F)
1992
-5.0 C (23.0 F)
1993
-9.4 C (15.1 F)
1994
-7.8 C (18.0 F)
1995
-7.2 C (19.0 F)
1996
-11.1 C (12.0 F)
1997
-6.1 C (21.0 F)
1998
-12.2 C (10.0 F)
1999
-4.4 C (24.1 F)
2000
-6.7 C (19.9 F)
2001
-3.9 C (25.0 F)
2002
-3.9 C (25.0 F)
2003
-5.0 C (23.0 F)
2004
-7.2 C (19.0 F)
2005
-7.2 C (19.0 F)
2006
-6.7 C (19.9 F)
2007
-7.8 C (18.0 F)
2008
-8.3 C (17.1 F)
2009
-12.2 C (10.0 F)
2010
-8.3 C (17.1 F)
2011
-9.4 C (15.1 F)
2012
-3.3 C (26.1 F)
2013
-12.2 C (10.0 F)
2014
-7.8 C (18.0 F)
2015
-6.1 C (21.0 F)
2016
-6.7 C (19.9 F)
2017
-9.4 C (15.1 F)
2018
-5.6 C (21.9 F)
2019
-6.1 C (21.0 F)
2020
-3.3 C (26.1 F)
2021
-7.8 C (18.0 F)
2022
-6.7 C (19.9 F)
2023
-7.8 C (18.0 F)
2024
-10.0 C (14.0 F)
2025
-7.2 C (19.0 F)
Wettest day (Rx1day)
The wettest day of the year at Silverton, 1962 to 2025. The record is 94.5 mm (3.7 in) in 1996, marked on the chart; the median year is 48.6 mm (1.9 in).
Wettest day (Rx1day) at Silverton by year
Year
Wettest day (Rx1day)
1962
65.3 mm (2.6 in)
1963
51.8 mm (2.0 in)
1964
50.8 mm (2.0 in)
1965
50.8 mm (2.0 in)
1966
46.0 mm (1.8 in)
1967
39.1 mm (1.5 in)
1968
60.7 mm (2.4 in)
1969
56.6 mm (2.2 in)
1970
50.8 mm (2.0 in)
1971
48.3 mm (1.9 in)
1972
59.7 mm (2.4 in)
1973
51.6 mm (2.0 in)
1974
59.7 mm (2.4 in)
1975
50.3 mm (2.0 in)
1976
42.2 mm (1.7 in)
1977
45.0 mm (1.8 in)
1978
32.3 mm (1.3 in)
1979
47.0 mm (1.9 in)
1980
46.5 mm (1.8 in)
1981
41.4 mm (1.6 in)
1982
41.9 mm (1.6 in)
1983
57.2 mm (2.3 in)
1984
61.0 mm (2.4 in)
1985
46.0 mm (1.8 in)
1986
43.2 mm (1.7 in)
1987
77.7 mm (3.1 in)
1988
38.1 mm (1.5 in)
1989
53.8 mm (2.1 in)
1990
40.6 mm (1.6 in)
1991
57.2 mm (2.3 in)
1992
42.4 mm (1.7 in)
1993
38.1 mm (1.5 in)
1994
81.8 mm (3.2 in)
1995
65.0 mm (2.6 in)
1996
94.5 mm (3.7 in)
1997
62.0 mm (2.4 in)
1998
52.1 mm (2.1 in)
1999
57.4 mm (2.3 in)
2000
24.4 mm (1.0 in)
2001
25.4 mm (1.0 in)
2002
43.7 mm (1.7 in)
2003
43.2 mm (1.7 in)
2004
36.3 mm (1.4 in)
2005
41.4 mm (1.6 in)
2006
87.1 mm (3.4 in)
2007
54.6 mm (2.1 in)
2008
40.4 mm (1.6 in)
2009
49.8 mm (2.0 in)
2010
43.2 mm (1.7 in)
2011
47.2 mm (1.9 in)
2012
65.3 mm (2.6 in)
2013
51.3 mm (2.0 in)
2014
47.8 mm (1.9 in)
2015
55.9 mm (2.2 in)
2016
48.8 mm (1.9 in)
2017
58.4 mm (2.3 in)
2018
42.2 mm (1.7 in)
2019
32.8 mm (1.3 in)
2020
51.8 mm (2.0 in)
2021
45.7 mm (1.8 in)
2022
41.7 mm (1.6 in)
2023
52.6 mm (2.1 in)
2024
41.7 mm (1.6 in)
2025
31.0 mm (1.2 in)
Wettest five days (Rx5day)
The wettest five days of the year at Silverton, 1962 to 2025. The record is 205.8 mm (8.1 in) in 1996, marked on the chart; the median year is 105.3 mm (4.1 in).
Wettest five days (Rx5day) at Silverton by year
Year
Wettest five days (Rx5day)
1962
89.7 mm (3.5 in)
1963
122.8 mm (4.8 in)
1964
189.7 mm (7.5 in)
1965
128.9 mm (5.1 in)
1966
121.3 mm (4.8 in)
1967
84.8 mm (3.3 in)
1968
128.8 mm (5.1 in)
1969
101.6 mm (4.0 in)
1970
108.5 mm (4.3 in)
1971
94.8 mm (3.7 in)
1972
114.3 mm (4.5 in)
1973
153.0 mm (6.0 in)
1974
181.1 mm (7.1 in)
1975
93.2 mm (3.7 in)
1976
92.3 mm (3.6 in)
1977
116.3 mm (4.6 in)
1978
78.5 mm (3.1 in)
1979
105.4 mm (4.1 in)
1980
132.6 mm (5.2 in)
1981
83.6 mm (3.3 in)
1982
101.3 mm (4.0 in)
1983
123.2 mm (4.9 in)
1984
104.1 mm (4.1 in)
1985
85.6 mm (3.4 in)
1986
121.7 mm (4.8 in)
1987
153.9 mm (6.1 in)
1988
86.5 mm (3.4 in)
1989
82.5 mm (3.2 in)
1990
111.5 mm (4.4 in)
1991
81.3 mm (3.2 in)
1992
94.5 mm (3.7 in)
1993
91.7 mm (3.6 in)
1994
122.3 mm (4.8 in)
1995
107.5 mm (4.2 in)
1996
205.8 mm (8.1 in)
1997
172.2 mm (6.8 in)
1998
126.5 mm (5.0 in)
1999
118.2 mm (4.7 in)
2000
82.7 mm (3.3 in)
2001
92.0 mm (3.6 in)
2002
116.1 mm (4.6 in)
2003
100.5 mm (4.0 in)
2004
70.4 mm (2.8 in)
2005
131.0 mm (5.2 in)
2006
159.2 mm (6.3 in)
2007
92.1 mm (3.6 in)
2008
88.3 mm (3.5 in)
2009
81.7 mm (3.2 in)
2010
83.0 mm (3.3 in)
2011
79.2 mm (3.1 in)
2012
157.0 mm (6.2 in)
2013
105.2 mm (4.1 in)
2014
79.5 mm (3.1 in)
2015
114.0 mm (4.5 in)
2016
135.9 mm (5.4 in)
2017
132.0 mm (5.2 in)
2018
70.6 mm (2.8 in)
2019
89.9 mm (3.5 in)
2020
102.6 mm (4.0 in)
2021
128.1 mm (5.0 in)
2022
132.6 mm (5.2 in)
2023
116.6 mm (4.6 in)
2024
90.7 mm (3.6 in)
2025
76.5 mm (3.0 in)
Longest dry spell (CDD)
The longest dry spell of the year at Silverton, 1962 to 2025. The record is 90 days in 2018, marked on the chart; the median year is 35 days.
Longest dry spell (CDD) at Silverton by year
Year
Longest dry spell (CDD)
1962
20 days
1963
31 days
1964
15 days
1965
35 days
1966
33 days
1967
79 days
1968
24 days
1969
63 days
1970
64 days
1971
21 days
1972
36 days
1973
24 days
1974
41 days
1975
32 days
1976
15 days
1977
28 days
1978
26 days
1979
34 days
1980
53 days
1981
72 days
1982
17 days
1983
22 days
1984
30 days
1985
52 days
1986
44 days
1987
34 days
1988
67 days
1989
19 days
1990
23 days
1991
31 days
1992
31 days
1993
22 days
1994
79 days
1995
27 days
1996
42 days
1997
41 days
1998
49 days
1999
35 days
2000
44 days
2001
30 days
2002
32 days
2003
45 days
2004
32 days
2005
50 days
2006
47 days
2007
25 days
2008
27 days
2009
29 days
2010
35 days
2011
36 days
2012
54 days
2013
36 days
2014
28 days
2015
53 days
2016
29 days
2017
56 days
2018
90 days
2019
27 days
2020
28 days
2021
66 days
2022
84 days
2023
40 days
2024
42 days
2025
36 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
55 years with a frost
Across 55 years with a frost, the median last spring frost at Silverton falls on 4 April and the median first autumn frost on 7 November, which leaves a median of 220 days between them.
Fitted over all years, the growing season changes by +5.9 days per decade at this station.
Frost dates and growing season at Silverton
Measure
Median, all years
Earliest period
Recent period (1991 to 2024)
Recent against earliest
Fitted trend
Last spring frost
4 April
n/a
26 March
n/a
-4.2 days per decade
First autumn frost
7 November
n/a
9 November
n/a
+1.7 days per decade
Growing days
220 days
n/a
232 days
n/a
+5.9 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
62 years, 1963 to 2024
A day with at least 48.2 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 89.3 mm (3.5 in) of rain is expected about once in 100 years.
Rainfall return levels at Silverton: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
48.2 mm (1.9 in)
5 years
59.2 mm (2.3 in)
10 years
66.5 mm (2.6 in)
25 years
75.7 mm (3.0 in)
50 years
82.5 mm (3.2 in)
100 years
89.3 mm (3.5 in)
Longer than the 62 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, 62 years of values from 1963 to 2024.
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: 94.5 mm (3.7 in) in 1996; 87.1 mm (3.4 in) in 2006; 81.8 mm (3.2 in) in 1994.
Station Changes
2 suspected
2 changes were suspected in the annual mean temperature of Silverton, at 1993 and 2017. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1993 ran 0.1 C (0.2 F) lower than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 2017 ran 0.2 C (0.4 F) higher than in the years before (possible change).
Suspected changes in the annual mean temperature at Silverton, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1993
-0.1
-0.2
likely
5
2017
+0.2
+0.4
possible
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.
Climate Twins
2007 to 2024 against 1961 to 1990
Over 2007 to 2024, Silverton had a mean temperature of 11.7 C (53.0 F) and 1,154.7 mm (45.5 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Eugene-Mahlon Sweet Fld (United States, 103 km away), Drain (United States, 156 km away) and Lookout Pt Dam (United States, 121 km away).
Climate twins of Silverton: stations whose 1961 to 1990 climate is closest to its 2007 to 2024 climate
Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.
Download the Data
Data for Silverton standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Silverton 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.