Record envelope, standing records and threshold days for Riverside 7 SSW (USC00357208), Oregon, United States, with 116 years of record.
Key Facts for Riverside 7 SSW
Riverside 7 SSW (USC00357208) is a weather station in Oregon, United States at 43.45 latitude and -118.22 longitude, 1,030 m (3,380 ft) above sea level.
The station reports from 1897 to 2012, 116 years of record.
1,464 records set at Riverside 7 SSW still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Riverside 7 SSW set a daily record low maximum temperature of 6.7 C (44.1 F) on 24 October 2012.
About the Station
Location: Oregon, United States, 43.45 latitude, -118.22 longitude.
Elevation: 1,030 m (3,380 ft).
Period of record: 1897 to 2012, 116 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 Riverside 7 SSW. 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 Riverside 7 SSW, 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)
-42.2 C (-44.0 F)
n/a
n/a
Feb
21.7 C (71.1 F)
-37.8 C (-36.0 F)
n/a
n/a
Mar
25.6 C (78.1 F)
-24.4 C (-11.9 F)
n/a
n/a
Apr
33.3 C (91.9 F)
-13.3 C (8.1 F)
n/a
n/a
May
38.9 C (102.0 F)
-12.2 C (10.0 F)
n/a
n/a
Jun
41.1 C (106.0 F)
-6.7 C (19.9 F)
n/a
n/a
Jul
43.9 C (111.0 F)
-5.0 C (23.0 F)
n/a
n/a
Aug
42.2 C (108.0 F)
-8.9 C (16.0 F)
n/a
n/a
Sep
37.8 C (100.0 F)
-12.2 C (10.0 F)
n/a
n/a
Oct
33.9 C (93.0 F)
-20.0 C (-4.0 F)
n/a
n/a
Nov
27.8 C (82.0 F)
-22.8 C (-9.0 F)
n/a
n/a
Dec
20.0 C (68.0 F)
-47.2 C (-53.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Riverside 7 SSW still stand. 1899 holds the most, with 68.
Standing records at Riverside 7 SSW by the year they were set
Year set
Standing records
1897
15
1898
24
1899
68
1900
6
1901
19
1902
12
1903
12
1904
21
1905
28
1906
27
1907
12
1908
16
1909
15
1910
28
1911
22
1912
15
1913
32
1914
6
1915
13
1916
19
1917
25
1918
25
1919
19
1920
13
1921
10
1922
32
1923
8
1924
10
1925
11
1926
13
1927
22
1928
19
1929
21
1930
20
1931
17
1932
19
1933
31
1934
23
1935
17
1936
25
1937
15
1938
10
1939
13
1940
14
1941
8
1942
8
1943
1
1966
4
1967
26
1968
12
1969
12
1970
11
1971
20
1972
25
1973
9
1974
16
1975
21
1976
13
1977
16
1978
13
1979
15
1980
13
1981
8
1982
6
1983
10
1984
9
1985
25
1986
15
1987
14
1988
10
1989
10
1990
27
1991
2
1992
12
1993
33
1994
10
1995
27
1996
24
1997
14
1998
5
1999
15
2000
4
2001
4
2002
13
2003
10
2004
7
2005
7
2006
7
2007
10
2008
16
2009
7
2010
6
2011
5
2012
7
All-Time Record Progression
2 new records
2 all-time records were set at Riverside 7 SSW between 2 February 1999 and 9 February 1999. Each dot is a new record.
When Riverside 7 SSW set new all-time records
Date
Kind
Detail
1999-02-02
Record snow depth
Record snow depth 63.5 cm (25.0 in)
1999-02-09
Record snow depth
Record snow depth 71.1 cm (28.0 in)
Wettest Day of Each Month
May: 48.3 mm (1.9 in)
The wettest day on record for each calendar month at Riverside 7 SSW. The most was 48.3 mm (1.9 in) on 26 May 1905.
Record daily precipitation for each month at Riverside 7 SSW
Month
Record daily precipitation (mm)
Date
Jan
35.3 mm (1.4 in)
20 January 1969
Feb
30.5 mm (1.2 in)
2 February 1907
Mar
27.9 mm (1.1 in)
11 March 1906
Apr
44.5 mm (1.8 in)
27 April 1932
May
48.3 mm (1.9 in)
26 May 1905
Jun
27.4 mm (1.1 in)
6 June 2009
Jul
47.0 mm (1.9 in)
23 July 1913
Aug
25.7 mm (1.0 in)
21 August 1983
Sep
30.5 mm (1.2 in)
17 September 1919
Oct
37.1 mm (1.5 in)
6 October 1925
Nov
24.1 mm (0.9 in)
13 November 1903
Dec
30.5 mm (1.2 in)
15 December 1899
Period of Record Coverage
1897 to 2012
Complete yearUnder 90 percent of days
94 years of record at Riverside 7 SSW, 1897 to 2012. 38 years have data for under 90 percent of days and are left out of rankings: 1897, 1900, 1902, 1903, 1906, 1907, 1908, 1909 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 44 complete years at Riverside 7 SSW, 1901 to 2005. Blue stripes are years cooler than the station's own mean of 9.1 C (48.3 F); red stripes are warmer. The coolest year was 1993, at 7.0 C (44.6 F), and the warmest was 1967, at 10.5 C (51.0 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Riverside 7 SSW as warming stripes, 1901 to 2005
Year
Annual mean temperature
Difference from the station mean
1901
9.5 C
+0.48 C
1915
10.0 C
+0.96 C
1916
8.0 C
-1.04 C
1920
8.8 C
-0.30 C
1921
8.5 C
-0.60 C
1923
8.2 C
-0.83 C
1924
7.6 C
-1.45 C
1927
9.0 C
-0.04 C
1929
8.2 C
-0.83 C
1930
8.5 C
-0.53 C
1931
8.8 C
-0.29 C
1932
8.0 C
-1.04 C
1935
8.1 C
-0.97 C
1936
9.2 C
+0.16 C
1938
9.5 C
+0.39 C
1967
10.5 C
+1.48 C
1968
10.1 C
+1.03 C
1969
9.6 C
+0.52 C
1970
9.5 C
+0.41 C
1971
9.3 C
+0.22 C
1972
9.4 C
+0.30 C
1973
9.9 C
+0.84 C
1974
9.6 C
+0.53 C
1975
8.9 C
-0.21 C
1976
8.9 C
-0.18 C
1977
9.7 C
+0.61 C
1978
9.0 C
-0.04 C
1979
9.3 C
+0.19 C
1980
9.4 C
+0.35 C
1981
9.8 C
+0.75 C
1982
8.1 C
-0.95 C
1983
9.4 C
+0.37 C
1985
7.5 C
-1.60 C
1986
9.9 C
+0.79 C
1987
9.8 C
+0.69 C
1988
9.9 C
+0.84 C
1989
9.0 C
-0.11 C
1990
10.3 C
+1.23 C
1993
7.0 C
-2.08 C
1994
9.2 C
+0.17 C
1995
9.3 C
+0.23 C
1996
9.2 C
+0.13 C
1997
8.9 C
-0.15 C
2005
8.8 C
-0.27 C
The fitted trend in annual mean temperature here over 1901 to 2005 is 0.07 C (-0.01 to 0.15) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.12 F (-0.03 to 0.27) per decade. The slope is a straight line fitted to 44 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Riverside 7 SSW
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.07 C (-0.01 to 0.15) per decade
0.12 F (-0.03 to 0.27) per decade
1901 to 2005
44
Not clearly different from zero
Mean daily maximum
-0.04 C (-0.13 to 0.06) per decade
-0.1 F (-0.2 to 0.1) per decade
1901 to 2005
44
Not clearly different from zero
Mean daily minimum
0.2 C (0.1 to 0.3) per decade
0.3 F (0.1 to 0.5) per decade
1901 to 2005
44
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
1897 to 2012
Yearly extremes at Riverside 7 SSW: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
43.9 C (111.0 F)
1905
39.4 C (102.9 F)
94
Coldest night (TNn)
-47.2 C (-53.0 F)
1924
-23.3 C (-9.9 F)
94
Wettest day (Rx1day)
48.3 mm (1.9 in)
1905
18.7 mm (0.7 in)
94
Wettest five days (Rx5day)
109.3 mm (4.3 in)
1913
30.9 mm (1.2 in)
94
Longest dry spell (CDD)
127 days
1931
50 days
94
Hottest day (TXx)
The hottest day of the year at Riverside 7 SSW, 1897 to 2012. The record is 43.9 C (111.0 F) in 1905, marked on the chart; the median year is 39.4 C (102.9 F).
Hottest day (TXx) at Riverside 7 SSW by year
Year
Hottest day (TXx)
1897
40.0 C (104.0 F)
1898
41.1 C (106.0 F)
1899
41.1 C (106.0 F)
1900
40.0 C (104.0 F)
1901
42.2 C (108.0 F)
1902
40.6 C (105.1 F)
1903
37.8 C (100.0 F)
1904
40.0 C (104.0 F)
1905
43.9 C (111.0 F)
1906
41.7 C (107.1 F)
1907
41.7 C (107.1 F)
1908
37.8 C (100.0 F)
1909
38.9 C (102.0 F)
1910
40.6 C (105.1 F)
1911
39.4 C (102.9 F)
1912
40.6 C (105.1 F)
1913
38.3 C (100.9 F)
1914
40.0 C (104.0 F)
1915
38.9 C (102.0 F)
1916
37.8 C (100.0 F)
1917
38.3 C (100.9 F)
1918
38.9 C (102.0 F)
1919
41.1 C (106.0 F)
1920
42.2 C (108.0 F)
1921
37.8 C (100.0 F)
1922
38.9 C (102.0 F)
1923
40.0 C (104.0 F)
1924
37.8 C (100.0 F)
1925
41.1 C (106.0 F)
1926
37.8 C (100.0 F)
1927
38.3 C (100.9 F)
1928
42.2 C (108.0 F)
1929
40.6 C (105.1 F)
1930
40.6 C (105.1 F)
1931
43.3 C (109.9 F)
1932
37.8 C (100.0 F)
1933
41.1 C (106.0 F)
1934
43.3 C (109.9 F)
1935
41.1 C (106.0 F)
1936
42.8 C (109.0 F)
1937
40.6 C (105.1 F)
1938
38.9 C (102.0 F)
1939
41.1 C (106.0 F)
1940
41.1 C (106.0 F)
1941
37.8 C (100.0 F)
1942
40.0 C (104.0 F)
1943
22.2 C (72.0 F)
1966
26.7 C (80.1 F)
1967
42.2 C (108.0 F)
1968
40.6 C (105.1 F)
1969
40.0 C (104.0 F)
1970
37.2 C (99.0 F)
1971
37.2 C (99.0 F)
1972
37.8 C (100.0 F)
1973
36.7 C (98.1 F)
1974
37.8 C (100.0 F)
1975
37.8 C (100.0 F)
1976
36.1 C (97.0 F)
1977
40.6 C (105.1 F)
1978
38.9 C (102.0 F)
1979
40.6 C (105.1 F)
1980
39.4 C (102.9 F)
1981
40.0 C (104.0 F)
1982
37.8 C (100.0 F)
1983
41.7 C (107.1 F)
1984
38.9 C (102.0 F)
1985
41.1 C (106.0 F)
1986
39.4 C (102.9 F)
1987
38.9 C (102.0 F)
1988
39.4 C (102.9 F)
1989
39.4 C (102.9 F)
1990
42.2 C (108.0 F)
1991
38.9 C (102.0 F)
1992
38.9 C (102.0 F)
1993
35.6 C (96.1 F)
1994
38.3 C (100.9 F)
1995
37.2 C (99.0 F)
1996
39.4 C (102.9 F)
1997
36.7 C (98.1 F)
1998
40.0 C (104.0 F)
1999
37.8 C (100.0 F)
2000
39.4 C (102.9 F)
2001
41.1 C (106.0 F)
2002
42.2 C (108.0 F)
2003
42.2 C (108.0 F)
2004
38.9 C (102.0 F)
2005
39.4 C (102.9 F)
2006
40.6 C (105.1 F)
2007
41.1 C (106.0 F)
2008
38.9 C (102.0 F)
2009
40.0 C (104.0 F)
2010
38.9 C (102.0 F)
2011
38.3 C (100.9 F)
2012
38.9 C (102.0 F)
Coldest night (TNn)
The coldest night of the year at Riverside 7 SSW, 1897 to 2012. The record is -47.2 C (-53.0 F) in 1924, marked on the chart; the median year is -23.3 C (-9.9 F).
Coldest night (TNn) at Riverside 7 SSW by year
Year
Coldest night (TNn)
1897
-17.8 C (0.0 F)
1898
-28.3 C (-18.9 F)
1899
-29.4 C (-20.9 F)
1900
-19.4 C (-2.9 F)
1901
-20.6 C (-5.1 F)
1902
-24.4 C (-11.9 F)
1903
-24.4 C (-11.9 F)
1904
-17.8 C (0.0 F)
1905
-28.9 C (-20.0 F)
1906
-23.9 C (-11.0 F)
1907
-20.0 C (-4.0 F)
1908
-24.4 C (-11.9 F)
1909
-23.3 C (-9.9 F)
1910
-35.6 C (-32.1 F)
1911
-22.8 C (-9.0 F)
1912
-29.4 C (-20.9 F)
1913
-25.0 C (-13.0 F)
1914
-18.3 C (-0.9 F)
1915
-25.6 C (-14.1 F)
1916
-28.9 C (-20.0 F)
1917
-25.6 C (-14.1 F)
1918
-23.3 C (-9.9 F)
1919
-28.9 C (-20.0 F)
1920
-23.3 C (-9.9 F)
1921
-20.6 C (-5.1 F)
1922
-38.3 C (-36.9 F)
1923
-28.3 C (-18.9 F)
1924
-47.2 C (-53.0 F)
1925
-16.7 C (1.9 F)
1926
-20.6 C (-5.1 F)
1927
-21.1 C (-6.0 F)
1928
-23.9 C (-11.0 F)
1929
-28.3 C (-18.9 F)
1930
-42.2 C (-44.0 F)
1931
-28.9 C (-20.0 F)
1932
-30.0 C (-22.0 F)
1933
-37.8 C (-36.0 F)
1934
-12.8 C (9.0 F)
1935
-21.7 C (-7.1 F)
1936
-23.9 C (-11.0 F)
1937
-35.6 C (-32.1 F)
1938
-16.1 C (3.0 F)
1939
-19.4 C (-2.9 F)
1940
-22.8 C (-9.0 F)
1941
-16.1 C (3.0 F)
1942
-25.0 C (-13.0 F)
1943
-26.1 C (-15.0 F)
1966
-20.6 C (-5.1 F)
1967
-22.8 C (-9.0 F)
1968
-16.7 C (1.9 F)
1969
-21.7 C (-7.1 F)
1970
-18.9 C (-2.0 F)
1971
-17.8 C (0.0 F)
1972
-32.8 C (-27.0 F)
1973
-15.0 C (5.0 F)
1974
-23.3 C (-9.9 F)
1975
-19.4 C (-2.9 F)
1976
-17.2 C (1.0 F)
1977
-27.8 C (-18.0 F)
1978
-25.6 C (-14.1 F)
1979
-31.7 C (-25.1 F)
1980
-22.2 C (-8.0 F)
1981
-16.1 C (3.0 F)
1982
-27.8 C (-18.0 F)
1983
-25.6 C (-14.1 F)
1984
-30.6 C (-23.1 F)
1985
-31.1 C (-24.0 F)
1986
-16.1 C (3.0 F)
1987
-23.9 C (-11.0 F)
1988
-26.1 C (-15.0 F)
1989
-25.0 C (-13.0 F)
1990
-35.6 C (-32.1 F)
1991
-22.8 C (-9.0 F)
1992
-27.2 C (-17.0 F)
1993
-26.1 C (-15.0 F)
1994
-18.9 C (-2.0 F)
1995
-20.6 C (-5.1 F)
1996
-27.8 C (-18.0 F)
1997
-17.2 C (1.0 F)
1998
-11.7 C (10.9 F)
1999
-20.6 C (-5.1 F)
2000
-16.7 C (1.9 F)
2001
-20.6 C (-5.1 F)
2002
-20.0 C (-4.0 F)
2003
-15.6 C (3.9 F)
2004
-23.3 C (-9.9 F)
2005
-21.7 C (-7.1 F)
2006
-19.4 C (-2.9 F)
2007
-18.9 C (-2.0 F)
2008
-26.1 C (-15.0 F)
2009
-21.1 C (-6.0 F)
2010
-20.0 C (-4.0 F)
2011
-22.2 C (-8.0 F)
2012
-18.9 C (-2.0 F)
Wettest day (Rx1day)
The wettest day of the year at Riverside 7 SSW, 1897 to 2012. The record is 48.3 mm (1.9 in) in 1905, marked on the chart; the median year is 18.7 mm (0.7 in).
Wettest day (Rx1day) at Riverside 7 SSW by year
Year
Wettest day (Rx1day)
1897
18.5 mm (0.7 in)
1898
19.1 mm (0.8 in)
1899
30.5 mm (1.2 in)
1900
24.1 mm (0.9 in)
1901
20.8 mm (0.8 in)
1902
27.7 mm (1.1 in)
1903
24.1 mm (0.9 in)
1904
25.4 mm (1.0 in)
1905
48.3 mm (1.9 in)
1906
27.9 mm (1.1 in)
1907
30.5 mm (1.2 in)
1908
16.5 mm (0.6 in)
1909
29.2 mm (1.1 in)
1910
15.2 mm (0.6 in)
1911
15.2 mm (0.6 in)
1912
21.6 mm (0.9 in)
1913
47.0 mm (1.9 in)
1914
17.8 mm (0.7 in)
1915
12.2 mm (0.5 in)
1916
24.1 mm (0.9 in)
1917
22.9 mm (0.9 in)
1918
16.5 mm (0.6 in)
1919
30.5 mm (1.2 in)
1920
14.5 mm (0.6 in)
1921
20.3 mm (0.8 in)
1922
15.2 mm (0.6 in)
1923
17.8 mm (0.7 in)
1924
15.2 mm (0.6 in)
1925
37.1 mm (1.5 in)
1926
12.7 mm (0.5 in)
1927
25.4 mm (1.0 in)
1928
25.4 mm (1.0 in)
1929
17.8 mm (0.7 in)
1930
25.4 mm (1.0 in)
1931
20.3 mm (0.8 in)
1932
44.5 mm (1.8 in)
1933
15.2 mm (0.6 in)
1934
13.5 mm (0.5 in)
1935
12.7 mm (0.5 in)
1936
27.9 mm (1.1 in)
1937
21.6 mm (0.9 in)
1938
28.7 mm (1.1 in)
1939
15.2 mm (0.6 in)
1940
23.6 mm (0.9 in)
1941
21.6 mm (0.9 in)
1942
16.5 mm (0.6 in)
1943
7.6 mm (0.30 in)
1966
10.9 mm (0.4 in)
1967
11.4 mm (0.4 in)
1968
18.0 mm (0.7 in)
1969
35.3 mm (1.4 in)
1970
21.8 mm (0.9 in)
1971
15.2 mm (0.6 in)
1972
17.8 mm (0.7 in)
1973
18.8 mm (0.7 in)
1974
11.2 mm (0.4 in)
1975
27.2 mm (1.1 in)
1976
24.1 mm (0.9 in)
1977
10.9 mm (0.4 in)
1978
14.5 mm (0.6 in)
1979
17.3 mm (0.7 in)
1980
15.7 mm (0.6 in)
1981
18.5 mm (0.7 in)
1982
16.0 mm (0.6 in)
1983
25.7 mm (1.0 in)
1984
11.7 mm (0.5 in)
1985
31.8 mm (1.3 in)
1986
20.3 mm (0.8 in)
1987
24.4 mm (1.0 in)
1988
16.3 mm (0.6 in)
1989
22.4 mm (0.9 in)
1990
17.0 mm (0.7 in)
1991
13.7 mm (0.5 in)
1992
23.6 mm (0.9 in)
1993
17.0 mm (0.7 in)
1994
10.4 mm (0.4 in)
1995
18.0 mm (0.7 in)
1996
15.7 mm (0.6 in)
1997
22.4 mm (0.9 in)
1998
14.5 mm (0.6 in)
1999
13.5 mm (0.5 in)
2000
25.4 mm (1.0 in)
2001
15.2 mm (0.6 in)
2002
27.9 mm (1.1 in)
2003
15.7 mm (0.6 in)
2004
20.3 mm (0.8 in)
2005
28.7 mm (1.1 in)
2006
11.9 mm (0.5 in)
2007
22.9 mm (0.9 in)
2008
16.0 mm (0.6 in)
2009
27.4 mm (1.1 in)
2010
17.8 mm (0.7 in)
2011
15.7 mm (0.6 in)
2012
24.6 mm (1.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Riverside 7 SSW, 1897 to 2012. The record is 109.3 mm (4.3 in) in 1913, marked on the chart; the median year is 30.9 mm (1.2 in).
Wettest five days (Rx5day) at Riverside 7 SSW by year
Year
Wettest five days (Rx5day)
1897
28.9 mm (1.1 in)
1898
22.9 mm (0.9 in)
1899
44.2 mm (1.7 in)
1900
24.1 mm (0.9 in)
1901
31.3 mm (1.2 in)
1902
32.0 mm (1.3 in)
1903
40.9 mm (1.6 in)
1904
34.3 mm (1.4 in)
1905
50.8 mm (2.0 in)
1906
58.4 mm (2.3 in)
1907
50.1 mm (2.0 in)
1908
20.3 mm (0.8 in)
1909
32.6 mm (1.3 in)
1910
29.9 mm (1.2 in)
1911
22.9 mm (0.9 in)
1912
33.1 mm (1.3 in)
1913
109.3 mm (4.3 in)
1914
28.0 mm (1.1 in)
1915
26.2 mm (1.0 in)
1916
31.7 mm (1.2 in)
1917
35.6 mm (1.4 in)
1918
35.6 mm (1.4 in)
1919
33.0 mm (1.3 in)
1920
21.5 mm (0.8 in)
1921
30.5 mm (1.2 in)
1922
23.3 mm (0.9 in)
1923
38.4 mm (1.5 in)
1924
24.8 mm (1.0 in)
1925
37.1 mm (1.5 in)
1926
21.8 mm (0.9 in)
1927
38.9 mm (1.5 in)
1928
33.0 mm (1.3 in)
1929
25.4 mm (1.0 in)
1930
29.9 mm (1.2 in)
1931
22.9 mm (0.9 in)
1932
58.4 mm (2.3 in)
1933
30.4 mm (1.2 in)
1934
27.7 mm (1.1 in)
1935
26.7 mm (1.1 in)
1936
36.0 mm (1.4 in)
1937
41.9 mm (1.6 in)
1938
36.6 mm (1.4 in)
1939
15.2 mm (0.6 in)
1940
52.1 mm (2.1 in)
1941
24.2 mm (1.0 in)
1942
30.1 mm (1.2 in)
1943
14.7 mm (0.6 in)
1966
20.8 mm (0.8 in)
1967
19.8 mm (0.8 in)
1968
21.8 mm (0.9 in)
1969
54.6 mm (2.1 in)
1970
40.3 mm (1.6 in)
1971
33.8 mm (1.3 in)
1972
22.1 mm (0.9 in)
1973
27.5 mm (1.1 in)
1974
24.1 mm (0.9 in)
1975
39.9 mm (1.6 in)
1976
38.3 mm (1.5 in)
1977
25.2 mm (1.0 in)
1978
30.5 mm (1.2 in)
1979
38.1 mm (1.5 in)
1980
27.5 mm (1.1 in)
1981
39.9 mm (1.6 in)
1982
29.5 mm (1.2 in)
1983
31.0 mm (1.2 in)
1984
19.6 mm (0.8 in)
1985
39.7 mm (1.6 in)
1986
39.0 mm (1.5 in)
1987
27.4 mm (1.1 in)
1988
22.1 mm (0.9 in)
1989
33.3 mm (1.3 in)
1990
19.1 mm (0.8 in)
1991
28.0 mm (1.1 in)
1992
52.1 mm (2.1 in)
1993
36.9 mm (1.5 in)
1994
19.0 mm (0.7 in)
1995
38.5 mm (1.5 in)
1996
41.4 mm (1.6 in)
1997
30.7 mm (1.2 in)
1998
26.7 mm (1.1 in)
1999
31.1 mm (1.2 in)
2000
35.1 mm (1.4 in)
2001
34.5 mm (1.4 in)
2002
27.9 mm (1.1 in)
2003
21.8 mm (0.9 in)
2004
42.2 mm (1.7 in)
2005
58.8 mm (2.3 in)
2006
28.4 mm (1.1 in)
2007
25.7 mm (1.0 in)
2008
36.2 mm (1.4 in)
2009
31.7 mm (1.2 in)
2010
28.0 mm (1.1 in)
2011
28.0 mm (1.1 in)
2012
32.2 mm (1.3 in)
Longest dry spell (CDD)
The longest dry spell of the year at Riverside 7 SSW, 1897 to 2012. The record is 127 days in 1931, marked on the chart; the median year is 50 days.
Longest dry spell (CDD) at Riverside 7 SSW by year
Year
Longest dry spell (CDD)
1897
53 days
1898
59 days
1899
99 days
1900
74 days
1901
67 days
1902
40 days
1903
55 days
1904
44 days
1905
64 days
1906
39 days
1907
25 days
1908
32 days
1909
63 days
1910
57 days
1911
30 days
1912
34 days
1913
54 days
1914
81 days
1915
50 days
1916
36 days
1917
93 days
1918
47 days
1919
112 days
1920
44 days
1921
77 days
1922
39 days
1923
50 days
1924
82 days
1925
34 days
1926
39 days
1927
44 days
1928
93 days
1929
87 days
1930
66 days
1931
127 days
1932
42 days
1933
76 days
1934
102 days
1935
70 days
1936
112 days
1937
50 days
1938
41 days
1939
45 days
1940
48 days
1941
28 days
1942
53 days
1943
7 days
1966
14 days
1967
81 days
1968
51 days
1969
74 days
1970
59 days
1971
66 days
1972
50 days
1973
31 days
1974
50 days
1975
44 days
1976
43 days
1977
48 days
1978
69 days
1979
54 days
1980
39 days
1981
79 days
1982
32 days
1983
41 days
1984
40 days
1985
37 days
1986
35 days
1987
69 days
1988
46 days
1989
38 days
1990
60 days
1991
25 days
1992
44 days
1993
50 days
1994
105 days
1995
56 days
1996
41 days
1997
77 days
1998
27 days
1999
49 days
2000
34 days
2001
32 days
2002
70 days
2003
35 days
2004
44 days
2005
82 days
2006
61 days
2007
43 days
2008
53 days
2009
54 days
2010
54 days
2011
9 days
2012
13 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
44 years with a frost
Across 44 years with a frost, the median last spring frost at Riverside 7 SSW falls on 3 June and the median first autumn frost on 12 September, which leaves a median of 102 days between them.
Fitted over all years, the growing season changes by +1.4 days per decade at this station.
Frost dates and growing season at Riverside 7 SSW
Measure
Median, all years
Earliest period
Recent period (1938 to 2005)
Recent against earliest
Fitted trend
Last spring frost
3 June
n/a
31 May
n/a
-0.8 days per decade
First autumn frost
12 September
n/a
16 September
n/a
+0.6 days per decade
Growing days
102 days
n/a
110 days
n/a
+1.4 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
67 years, 1898 to 2010
A day with at least 19.7 mm (0.8 in) of rain is expected about once in 2 years. A day with at least 49.8 mm (2.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Riverside 7 SSW: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
19.7 mm (0.8 in)
5 years
26.4 mm (1.0 in)
10 years
31.4 mm (1.2 in)
25 years
38.2 mm (1.5 in)
50 years
43.8 mm (1.7 in)
100 years
49.8 mm (2.0 in)
Longer than the 67 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, 67 years of values from 1898 to 2010.
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: 48.3 mm (1.9 in) in 1905; 47.0 mm (1.9 in) in 1913; 44.5 mm (1.8 in) in 1932.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Riverside 7 SSW, at 1990. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1990 ran 0.5 C (0.9 F) lower than in the years before (possible change).
Suspected changes in the annual mean temperature at Riverside 7 SSW, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1990
-0.5
-0.9
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.
Download the Data
Data for Riverside 7 SSW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Riverside 7 SSW 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.