Record envelope, standing records and threshold days for Sunnyside (USC00458207), Washington, United States, with 120 years of record.
Key Facts for Sunnyside
Sunnyside (USC00458207) is a weather station in Washington, United States at 46.32 latitude and -120.01 longitude, 228 m (747 ft) above sea level.
The station reports from 1894 to 2013, 120 years of record.
1,464 records set at Sunnyside still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Sunnyside set a daily record precipitation of 19.6 mm (0.8 in) on 30 June 2013.
About the Station
Location: Washington, United States, 46.32 latitude, -120.01 longitude.
Elevation: 228 m (747 ft).
Period of record: 1894 to 2013, 120 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 Sunnyside. 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 Sunnyside, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
21.1 C (70.0 F)
-32.2 C (-26.0 F)
n/a
n/a
Feb
22.2 C (72.0 F)
-28.3 C (-18.9 F)
n/a
n/a
Mar
27.8 C (82.0 F)
-13.9 C (7.0 F)
n/a
n/a
Apr
35.6 C (96.1 F)
-9.4 C (15.1 F)
n/a
n/a
May
40.0 C (104.0 F)
-4.4 C (24.1 F)
n/a
n/a
Jun
41.7 C (107.1 F)
0.0 C (32.0 F)
n/a
n/a
Jul
44.4 C (111.9 F)
3.9 C (39.0 F)
n/a
n/a
Aug
42.2 C (108.0 F)
2.2 C (36.0 F)
n/a
n/a
Sep
39.4 C (102.9 F)
-7.8 C (18.0 F)
n/a
n/a
Oct
31.7 C (89.1 F)
-11.1 C (12.0 F)
n/a
n/a
Nov
25.0 C (77.0 F)
-20.6 C (-5.1 F)
n/a
n/a
Dec
20.6 C (69.1 F)
-26.1 C (-15.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Sunnyside still stand. 1936 holds the most, with 35.
Standing records at Sunnyside by the year they were set
Year set
Standing records
1894
1
1895
29
1896
28
1897
17
1898
18
1899
31
1900
17
1901
17
1902
12
1903
9
1904
16
1905
11
1906
33
1907
8
1908
17
1909
30
1910
25
1911
14
1912
14
1913
10
1914
3
1915
14
1916
28
1917
22
1918
18
1919
32
1920
12
1921
13
1922
19
1923
11
1924
28
1925
15
1926
19
1927
7
1928
6
1929
21
1930
20
1931
11
1932
15
1933
20
1934
18
1935
12
1936
35
1937
12
1938
7
1939
9
1940
4
1941
7
1942
5
1943
7
1944
7
1945
7
1946
5
1947
13
1948
9
1949
7
1950
23
1951
13
1952
7
1953
8
1954
5
1955
27
1956
6
1957
14
1958
13
1959
5
1960
13
1961
11
1962
8
1963
9
1964
9
1965
12
1966
10
1967
21
1968
22
1969
10
1970
8
1971
10
1972
12
1973
5
1974
6
1975
13
1976
3
1977
9
1978
5
1979
4
1980
12
1981
6
1982
8
1983
13
1984
5
1985
12
1986
14
1987
11
1988
8
1989
8
1990
10
1991
4
1992
21
1993
7
1994
5
1995
9
1996
1
1997
4
1998
13
1999
13
2000
3
2001
4
2002
12
2003
20
2004
5
2005
3
2006
15
2007
6
2008
6
2009
8
2010
8
2011
6
2012
5
2013
3
All-Time Record Progression
4 new records
4 all-time records were set at Sunnyside between 21 January 1930 and 8 June 1947. Each dot is a new record.
When Sunnyside set new all-time records
Date
Kind
Detail
1930-01-21
Record low minimum temperature
Record low minimum temperature -32.2 C (-26.0 F)
1938-06-17
Record daily precipitation
Record daily precipitation 40.6 mm (1.6 in)
1939-07-27
Record high maximum temperature
Record high maximum temperature 44.4 C (111.9 F)
1947-06-08
Record daily precipitation
Record daily precipitation 46.2 mm (1.8 in)
Wettest Day of Each Month
Jun: 46.2 mm (1.8 in)
The wettest day on record for each calendar month at Sunnyside. The most was 46.2 mm (1.8 in) on 8 June 1947.
Record daily precipitation for each month at Sunnyside
Month
Record daily precipitation (mm)
Date
Jan
30.7 mm (1.2 in)
7 January 1948
Feb
14.0 mm (0.6 in)
12 February 1902
Mar
17.3 mm (0.7 in)
15 March 1987
Apr
25.4 mm (1.0 in)
14 April 2003
May
40.6 mm (1.6 in)
21 May 1972
Jun
46.2 mm (1.8 in)
8 June 1947
Jul
15.5 mm (0.6 in)
6 July 1923
Aug
22.4 mm (0.9 in)
20 August 1923
Sep
36.1 mm (1.4 in)
16 September 1986
Oct
27.4 mm (1.1 in)
29 October 1982
Nov
26.7 mm (1.1 in)
20 November 1921
Dec
22.4 mm (0.9 in)
25 December 1933
Period of Record Coverage
1894 to 2013
Complete yearUnder 90 percent of days
120 years of record at Sunnyside, 1894 to 2013. 11 years have data for under 90 percent of days and are left out of rankings: 1894, 1905, 1907, 1908, 1991, 1996, 1997, 1998 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 106 complete years at Sunnyside, 1895 to 2012. Blue stripes are years cooler than the station's own mean of 11.0 C (51.8 F); red stripes are warmer. The coolest year was 2011, at 9.2 C (48.6 F), and the warmest was 2003, at 12.8 C (55.1 F). The strongest colour marks a difference of 1.8 C (3.2 F).
Annual mean temperature at Sunnyside as warming stripes, 1895 to 2012
Year
Annual mean temperature
Difference from the station mean
1895
10.6 C
-0.43 C
1896
10.9 C
-0.18 C
1897
10.8 C
-0.20 C
1898
10.7 C
-0.36 C
1899
10.3 C
-0.76 C
1900
11.2 C
+0.14 C
1901
10.3 C
-0.71 C
1902
10.0 C
-1.07 C
1903
9.9 C
-1.11 C
1904
10.7 C
-0.29 C
1909
9.8 C
-1.22 C
1910
10.9 C
-0.09 C
1911
10.2 C
-0.87 C
1912
10.3 C
-0.75 C
1913
9.9 C
-1.12 C
1914
10.7 C
-0.30 C
1915
11.5 C
+0.43 C
1916
9.7 C
-1.31 C
1917
11.2 C
+0.13 C
1918
12.0 C
+0.97 C
1919
10.4 C
-0.60 C
1920
10.7 C
-0.35 C
1921
11.0 C
-0.04 C
1922
10.0 C
-1.05 C
1923
11.5 C
+0.48 C
1924
11.0 C
-0.06 C
1925
12.1 C
+1.05 C
1926
11.6 C
+0.59 C
1927
10.7 C
-0.32 C
1928
11.0 C
-0.08 C
1929
9.5 C
-1.55 C
1930
10.4 C
-0.65 C
1931
11.2 C
+0.14 C
1932
10.6 C
-0.40 C
1933
10.8 C
-0.21 C
1934
12.8 C
+1.78 C
1935
10.5 C
-0.52 C
1936
10.7 C
-0.36 C
1937
10.2 C
-0.86 C
1938
11.4 C
+0.39 C
1939
11.6 C
+0.56 C
1940
11.3 C
+0.31 C
1941
11.3 C
+0.31 C
1942
10.6 C
-0.46 C
1943
10.1 C
-0.92 C
1944
10.7 C
-0.31 C
1945
11.0 C
-0.05 C
1946
11.0 C
-0.06 C
1947
11.6 C
+0.56 C
1948
10.1 C
-0.93 C
1949
10.7 C
-0.37 C
1950
10.4 C
-0.68 C
1951
11.2 C
+0.19 C
1952
11.5 C
+0.43 C
1953
12.3 C
+1.22 C
1954
10.6 C
-0.43 C
1955
9.7 C
-1.34 C
1956
10.8 C
-0.22 C
1957
10.6 C
-0.40 C
1958
12.6 C
+1.61 C
1959
10.7 C
-0.33 C
1960
10.7 C
-0.37 C
1961
11.7 C
+0.70 C
1962
11.0 C
-0.01 C
1963
11.0 C
-0.06 C
1964
10.4 C
-0.63 C
1965
11.6 C
+0.59 C
1966
11.9 C
+0.84 C
1967
12.5 C
+1.51 C
1968
11.6 C
+0.52 C
1969
10.5 C
-0.56 C
1970
10.8 C
-0.22 C
1971
11.0 C
-0.02 C
1972
10.7 C
-0.32 C
1973
11.3 C
+0.28 C
1974
11.4 C
+0.37 C
1975
10.9 C
-0.14 C
1976
10.9 C
-0.10 C
1977
11.3 C
+0.22 C
1978
11.0 C
-0.01 C
1979
10.8 C
-0.23 C
1980
10.9 C
-0.18 C
1981
11.7 C
+0.65 C
1982
10.7 C
-0.32 C
1983
11.4 C
+0.41 C
1984
10.7 C
-0.33 C
1985
10.0 C
-1.04 C
1986
11.7 C
+0.64 C
1987
11.9 C
+0.85 C
1988
12.4 C
+1.41 C
1989
11.6 C
+0.57 C
1990
12.5 C
+1.42 C
1992
12.6 C
+1.54 C
1993
10.5 C
-0.56 C
1994
12.4 C
+1.33 C
1995
11.8 C
+0.75 C
2000
11.8 C
+0.80 C
2001
12.4 C
+1.40 C
2002
12.2 C
+1.21 C
2003
12.8 C
+1.78 C
2004
12.3 C
+1.22 C
2007
11.6 C
+0.55 C
2008
10.6 C
-0.39 C
2010
10.2 C
-0.85 C
2011
9.2 C
-1.79 C
2012
10.2 C
-0.86 C
The annual mean temperature here has risen by 0.09 C (0.04 to 0.13) per decade over 1895 to 2012. In Fahrenheit: 0.2 F (0.1 to 0.2) per decade. The slope is a straight line fitted to 106 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Sunnyside
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.09 C (0.04 to 0.13) per decade
0.2 F (0.1 to 0.2) per decade
1895 to 2012
106
Rise
Mean daily maximum
0.02 C (-0.04 to 0.08) per decade
0.04 F (-0.06 to 0.14) per decade
1895 to 2012
106
Not clearly different from zero
Mean daily minimum
0.1 C (0.1 to 0.2) per decade
0.3 F (0.2 to 0.3) per decade
1895 to 2012
106
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
1894 to 2013
Yearly extremes at Sunnyside: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
44.4 C (111.9 F)
1939
39.7 C (103.5 F)
120
Coldest night (TNn)
-32.2 C (-26.0 F)
1930
-16.7 C (1.9 F)
120
Wettest day (Rx1day)
46.2 mm (1.8 in)
1947
15.9 mm (0.6 in)
120
Wettest five days (Rx5day)
60.6 mm (2.4 in)
1938
23.8 mm (0.9 in)
120
Longest dry spell (CDD)
120 days
1949
57 days
120
Hottest day (TXx)
The hottest day of the year at Sunnyside, 1894 to 2013. The record is 44.4 C (111.9 F) in 1939, marked on the chart; the median year is 39.7 C (103.5 F).
Hottest day (TXx) at Sunnyside by year
Year
Hottest day (TXx)
1894
28.3 C (82.9 F)
1895
38.3 C (100.9 F)
1896
40.6 C (105.1 F)
1897
40.6 C (105.1 F)
1898
42.2 C (108.0 F)
1899
38.3 C (100.9 F)
1900
38.3 C (100.9 F)
1901
37.8 C (100.0 F)
1902
36.1 C (97.0 F)
1903
37.2 C (99.0 F)
1904
37.8 C (100.0 F)
1905
40.0 C (104.0 F)
1906
38.3 C (100.9 F)
1907
32.2 C (90.0 F)
1908
40.0 C (104.0 F)
1909
37.8 C (100.0 F)
1910
38.3 C (100.9 F)
1911
40.6 C (105.1 F)
1912
38.9 C (102.0 F)
1913
39.4 C (102.9 F)
1914
38.3 C (100.9 F)
1915
40.0 C (104.0 F)
1916
39.4 C (102.9 F)
1917
41.1 C (106.0 F)
1918
41.7 C (107.1 F)
1919
42.2 C (108.0 F)
1920
40.0 C (104.0 F)
1921
37.8 C (100.0 F)
1922
42.2 C (108.0 F)
1923
40.0 C (104.0 F)
1924
41.1 C (106.0 F)
1925
40.0 C (104.0 F)
1926
40.6 C (105.1 F)
1927
39.4 C (102.9 F)
1928
41.1 C (106.0 F)
1929
40.0 C (104.0 F)
1930
39.4 C (102.9 F)
1931
40.6 C (105.1 F)
1932
37.8 C (100.0 F)
1933
40.0 C (104.0 F)
1934
40.6 C (105.1 F)
1935
42.2 C (108.0 F)
1936
40.6 C (105.1 F)
1937
38.9 C (102.0 F)
1938
40.6 C (105.1 F)
1939
44.4 C (111.9 F)
1940
37.8 C (100.0 F)
1941
42.2 C (108.0 F)
1942
41.1 C (106.0 F)
1943
37.2 C (99.0 F)
1944
38.3 C (100.9 F)
1945
38.3 C (100.9 F)
1946
38.9 C (102.0 F)
1947
36.7 C (98.1 F)
1948
38.9 C (102.0 F)
1949
39.4 C (102.9 F)
1950
37.8 C (100.0 F)
1951
38.9 C (102.0 F)
1952
40.6 C (105.1 F)
1953
38.9 C (102.0 F)
1954
36.7 C (98.1 F)
1955
39.4 C (102.9 F)
1956
38.9 C (102.0 F)
1957
36.7 C (98.1 F)
1958
40.0 C (104.0 F)
1959
40.0 C (104.0 F)
1960
41.7 C (107.1 F)
1961
40.6 C (105.1 F)
1962
39.4 C (102.9 F)
1963
37.2 C (99.0 F)
1964
40.0 C (104.0 F)
1965
40.6 C (105.1 F)
1966
36.7 C (98.1 F)
1967
41.1 C (106.0 F)
1968
42.2 C (108.0 F)
1969
37.8 C (100.0 F)
1970
39.4 C (102.9 F)
1971
41.1 C (106.0 F)
1972
40.0 C (104.0 F)
1973
38.9 C (102.0 F)
1974
38.9 C (102.0 F)
1975
41.1 C (106.0 F)
1976
36.7 C (98.1 F)
1977
40.0 C (104.0 F)
1978
38.9 C (102.0 F)
1979
40.6 C (105.1 F)
1980
39.4 C (102.9 F)
1981
39.4 C (102.9 F)
1982
39.4 C (102.9 F)
1983
37.8 C (100.0 F)
1984
38.9 C (102.0 F)
1985
40.0 C (104.0 F)
1986
40.6 C (105.1 F)
1987
39.4 C (102.9 F)
1988
40.6 C (105.1 F)
1989
38.3 C (100.9 F)
1990
41.1 C (106.0 F)
1991
38.3 C (100.9 F)
1992
41.7 C (107.1 F)
1993
37.8 C (100.0 F)
1994
41.1 C (106.0 F)
1995
38.3 C (100.9 F)
1996
40.0 C (104.0 F)
1997
38.9 C (102.0 F)
1998
43.3 C (109.9 F)
1999
40.0 C (104.0 F)
2000
40.6 C (105.1 F)
2001
40.0 C (104.0 F)
2002
42.8 C (109.0 F)
2003
41.7 C (107.1 F)
2004
40.0 C (104.0 F)
2005
38.3 C (100.9 F)
2006
43.9 C (111.0 F)
2007
41.1 C (106.0 F)
2008
41.1 C (106.0 F)
2009
40.0 C (104.0 F)
2010
36.7 C (98.1 F)
2011
33.9 C (93.0 F)
2012
37.2 C (99.0 F)
2013
40.6 C (105.1 F)
Coldest night (TNn)
The coldest night of the year at Sunnyside, 1894 to 2013. The record is -32.2 C (-26.0 F) in 1930, marked on the chart; the median year is -16.7 C (1.9 F).
Coldest night (TNn) at Sunnyside by year
Year
Coldest night (TNn)
1894
-16.7 C (1.9 F)
1895
-21.7 C (-7.1 F)
1896
-19.4 C (-2.9 F)
1897
-16.1 C (3.0 F)
1898
-21.1 C (-6.0 F)
1899
-26.7 C (-16.1 F)
1900
-20.0 C (-4.0 F)
1901
-14.4 C (6.1 F)
1902
-23.9 C (-11.0 F)
1903
-16.7 C (1.9 F)
1904
-10.0 C (14.0 F)
1905
-17.2 C (1.0 F)
1906
-13.3 C (8.1 F)
1907
-23.9 C (-11.0 F)
1908
-10.6 C (12.9 F)
1909
-31.1 C (-24.0 F)
1910
-15.6 C (3.9 F)
1911
-11.7 C (10.9 F)
1912
-26.7 C (-16.1 F)
1913
-17.8 C (0.0 F)
1914
-16.7 C (1.9 F)
1915
-15.6 C (3.9 F)
1916
-26.7 C (-16.1 F)
1917
-15.6 C (3.9 F)
1918
-13.3 C (8.1 F)
1919
-26.1 C (-15.0 F)
1920
-13.3 C (8.1 F)
1921
-17.8 C (0.0 F)
1922
-24.4 C (-11.9 F)
1923
-16.7 C (1.9 F)
1924
-23.3 C (-9.9 F)
1925
-13.9 C (7.0 F)
1926
-17.8 C (0.0 F)
1927
-26.1 C (-15.0 F)
1928
-13.3 C (8.1 F)
1929
-26.1 C (-15.0 F)
1930
-32.2 C (-26.0 F)
1931
-17.8 C (0.0 F)
1932
-20.6 C (-5.1 F)
1933
-21.1 C (-6.0 F)
1934
-5.6 C (21.9 F)
1935
-18.3 C (-0.9 F)
1936
-18.3 C (-0.9 F)
1937
-26.1 C (-15.0 F)
1938
-12.2 C (10.0 F)
1939
-10.0 C (14.0 F)
1940
-12.8 C (9.0 F)
1941
-10.6 C (12.9 F)
1942
-17.8 C (0.0 F)
1943
-22.2 C (-8.0 F)
1944
-12.8 C (9.0 F)
1945
-11.1 C (12.0 F)
1946
-12.2 C (10.0 F)
1947
-16.7 C (1.9 F)
1948
-16.7 C (1.9 F)
1949
-21.7 C (-7.1 F)
1950
-28.3 C (-18.9 F)
1951
-15.6 C (3.9 F)
1952
-14.4 C (6.1 F)
1953
-6.1 C (21.0 F)
1954
-24.4 C (-11.9 F)
1955
-17.8 C (0.0 F)
1956
-23.3 C (-9.9 F)
1957
-28.9 C (-20.0 F)
1958
-11.1 C (12.0 F)
1959
-17.8 C (0.0 F)
1960
-17.8 C (0.0 F)
1961
-12.2 C (10.0 F)
1962
-16.1 C (3.0 F)
1963
-17.8 C (0.0 F)
1964
-22.8 C (-9.0 F)
1965
-15.0 C (5.0 F)
1966
-7.8 C (18.0 F)
1967
-13.3 C (8.1 F)
1968
-21.1 C (-6.0 F)
1969
-21.1 C (-6.0 F)
1970
-16.1 C (3.0 F)
1971
-11.1 C (12.0 F)
1972
-21.1 C (-6.0 F)
1973
-17.2 C (1.0 F)
1974
-23.3 C (-9.9 F)
1975
-11.7 C (10.9 F)
1976
-11.7 C (10.9 F)
1977
-13.9 C (7.0 F)
1978
-19.4 C (-2.9 F)
1979
-22.8 C (-9.0 F)
1980
-20.0 C (-4.0 F)
1981
-12.8 C (9.0 F)
1982
-22.2 C (-8.0 F)
1983
-21.7 C (-7.1 F)
1984
-17.2 C (1.0 F)
1985
-20.6 C (-5.1 F)
1986
-9.4 C (15.1 F)
1987
-12.2 C (10.0 F)
1988
-12.2 C (10.0 F)
1989
-17.2 C (1.0 F)
1990
-19.4 C (-2.9 F)
1991
-12.8 C (9.0 F)
1992
-11.1 C (12.0 F)
1993
-19.4 C (-2.9 F)
1994
-13.3 C (8.1 F)
1995
-12.2 C (10.0 F)
1996
-23.9 C (-11.0 F)
1997
-8.3 C (17.1 F)
1998
-12.8 C (9.0 F)
1999
-8.9 C (16.0 F)
2000
-7.8 C (18.0 F)
2001
-6.7 C (19.9 F)
2002
-11.1 C (12.0 F)
2003
-11.1 C (12.0 F)
2004
-22.8 C (-9.0 F)
2005
-16.1 C (3.0 F)
2006
-13.9 C (7.0 F)
2007
-13.3 C (8.1 F)
2008
-17.8 C (0.0 F)
2009
-18.3 C (-0.9 F)
2010
-18.3 C (-0.9 F)
2011
-15.0 C (5.0 F)
2012
-11.7 C (10.9 F)
2013
-10.6 C (12.9 F)
Wettest day (Rx1day)
The wettest day of the year at Sunnyside, 1894 to 2013. The record is 46.2 mm (1.8 in) in 1947, marked on the chart; the median year is 15.9 mm (0.6 in).
Wettest day (Rx1day) at Sunnyside by year
Year
Wettest day (Rx1day)
1894
7.1 mm (0.28 in)
1895
14.0 mm (0.6 in)
1896
16.5 mm (0.6 in)
1897
23.6 mm (0.9 in)
1898
13.2 mm (0.5 in)
1899
15.2 mm (0.6 in)
1900
8.9 mm (0.35 in)
1901
15.7 mm (0.6 in)
1902
14.0 mm (0.6 in)
1903
15.2 mm (0.6 in)
1904
11.9 mm (0.5 in)
1905
25.4 mm (1.0 in)
1906
15.5 mm (0.6 in)
1907
21.1 mm (0.8 in)
1908
16.5 mm (0.6 in)
1909
11.9 mm (0.5 in)
1910
9.7 mm (0.38 in)
1911
19.8 mm (0.8 in)
1912
21.8 mm (0.9 in)
1913
9.1 mm (0.36 in)
1914
16.5 mm (0.6 in)
1915
9.1 mm (0.36 in)
1916
13.2 mm (0.5 in)
1917
18.0 mm (0.7 in)
1918
14.2 mm (0.6 in)
1919
11.2 mm (0.4 in)
1920
13.7 mm (0.5 in)
1921
26.7 mm (1.1 in)
1922
12.7 mm (0.5 in)
1923
22.4 mm (0.9 in)
1924
11.4 mm (0.4 in)
1925
12.7 mm (0.5 in)
1926
18.8 mm (0.7 in)
1927
16.3 mm (0.6 in)
1928
14.0 mm (0.6 in)
1929
11.4 mm (0.4 in)
1930
9.9 mm (0.39 in)
1931
20.3 mm (0.8 in)
1932
10.7 mm (0.4 in)
1933
22.4 mm (0.9 in)
1934
18.0 mm (0.7 in)
1935
15.0 mm (0.6 in)
1936
15.5 mm (0.6 in)
1937
20.3 mm (0.8 in)
1938
40.6 mm (1.6 in)
1939
14.0 mm (0.6 in)
1940
18.0 mm (0.7 in)
1941
14.5 mm (0.6 in)
1942
17.8 mm (0.7 in)
1943
14.2 mm (0.6 in)
1944
18.5 mm (0.7 in)
1945
14.7 mm (0.6 in)
1946
12.7 mm (0.5 in)
1947
46.2 mm (1.8 in)
1948
30.7 mm (1.2 in)
1949
19.6 mm (0.8 in)
1950
14.5 mm (0.6 in)
1951
28.4 mm (1.1 in)
1952
11.2 mm (0.4 in)
1953
18.0 mm (0.7 in)
1954
15.2 mm (0.6 in)
1955
19.8 mm (0.8 in)
1956
17.0 mm (0.7 in)
1957
17.3 mm (0.7 in)
1958
14.0 mm (0.6 in)
1959
21.3 mm (0.8 in)
1960
13.7 mm (0.5 in)
1961
15.5 mm (0.6 in)
1962
11.4 mm (0.4 in)
1963
13.7 mm (0.5 in)
1964
20.3 mm (0.8 in)
1965
8.6 mm (0.34 in)
1966
19.1 mm (0.8 in)
1967
13.0 mm (0.5 in)
1968
20.8 mm (0.8 in)
1969
14.0 mm (0.6 in)
1970
22.1 mm (0.9 in)
1971
20.3 mm (0.8 in)
1972
40.6 mm (1.6 in)
1973
21.8 mm (0.9 in)
1974
23.4 mm (0.9 in)
1975
19.3 mm (0.8 in)
1976
8.9 mm (0.35 in)
1977
22.4 mm (0.9 in)
1978
11.7 mm (0.5 in)
1979
12.7 mm (0.5 in)
1980
16.3 mm (0.6 in)
1981
17.8 mm (0.7 in)
1982
27.4 mm (1.1 in)
1983
15.0 mm (0.6 in)
1984
14.2 mm (0.6 in)
1985
10.2 mm (0.4 in)
1986
36.1 mm (1.4 in)
1987
17.3 mm (0.7 in)
1988
16.0 mm (0.6 in)
1989
16.5 mm (0.6 in)
1990
17.5 mm (0.7 in)
1991
27.9 mm (1.1 in)
1992
19.3 mm (0.8 in)
1993
16.3 mm (0.6 in)
1994
17.5 mm (0.7 in)
1995
18.0 mm (0.7 in)
1996
15.5 mm (0.6 in)
1997
18.0 mm (0.7 in)
1998
14.0 mm (0.6 in)
1999
8.6 mm (0.34 in)
2000
10.7 mm (0.4 in)
2001
14.5 mm (0.6 in)
2002
12.4 mm (0.5 in)
2003
25.4 mm (1.0 in)
2004
23.9 mm (0.9 in)
2005
14.7 mm (0.6 in)
2006
15.7 mm (0.6 in)
2007
14.7 mm (0.6 in)
2008
9.1 mm (0.36 in)
2009
23.4 mm (0.9 in)
2010
15.5 mm (0.6 in)
2011
35.6 mm (1.4 in)
2012
17.3 mm (0.7 in)
2013
26.7 mm (1.1 in)
Wettest five days (Rx5day)
The wettest five days of the year at Sunnyside, 1894 to 2013. The record is 60.6 mm (2.4 in) in 1938, marked on the chart; the median year is 23.8 mm (0.9 in).
Wettest five days (Rx5day) at Sunnyside by year
Year
Wettest five days (Rx5day)
1894
11.7 mm (0.5 in)
1895
23.6 mm (0.9 in)
1896
22.8 mm (0.9 in)
1897
48.2 mm (1.9 in)
1898
13.2 mm (0.5 in)
1899
29.4 mm (1.2 in)
1900
11.5 mm (0.5 in)
1901
19.8 mm (0.8 in)
1902
29.5 mm (1.2 in)
1903
17.3 mm (0.7 in)
1904
26.2 mm (1.0 in)
1905
42.0 mm (1.7 in)
1906
33.1 mm (1.3 in)
1907
17.3 mm (0.7 in)
1908
24.1 mm (0.9 in)
1909
16.6 mm (0.7 in)
1910
13.7 mm (0.5 in)
1911
40.2 mm (1.6 in)
1912
30.9 mm (1.2 in)
1913
8.3 mm (0.33 in)
1914
19.3 mm (0.8 in)
1915
18.3 mm (0.7 in)
1916
18.3 mm (0.7 in)
1917
24.1 mm (0.9 in)
1918
16.0 mm (0.6 in)
1919
11.7 mm (0.5 in)
1920
23.1 mm (0.9 in)
1921
46.2 mm (1.8 in)
1922
18.9 mm (0.7 in)
1923
22.4 mm (0.9 in)
1924
22.6 mm (0.9 in)
1925
20.8 mm (0.8 in)
1926
29.1 mm (1.1 in)
1927
25.5 mm (1.0 in)
1928
29.2 mm (1.1 in)
1929
19.3 mm (0.8 in)
1930
14.5 mm (0.6 in)
1931
27.8 mm (1.1 in)
1932
15.5 mm (0.6 in)
1933
25.7 mm (1.0 in)
1934
18.0 mm (0.7 in)
1935
15.0 mm (0.6 in)
1936
22.7 mm (0.9 in)
1937
34.7 mm (1.4 in)
1938
60.6 mm (2.4 in)
1939
20.1 mm (0.8 in)
1940
28.0 mm (1.1 in)
1941
19.3 mm (0.8 in)
1942
27.2 mm (1.1 in)
1943
29.2 mm (1.1 in)
1944
23.1 mm (0.9 in)
1945
18.7 mm (0.7 in)
1946
19.1 mm (0.8 in)
1947
51.3 mm (2.0 in)
1948
34.0 mm (1.3 in)
1949
22.4 mm (0.9 in)
1950
25.4 mm (1.0 in)
1951
49.3 mm (1.9 in)
1952
13.5 mm (0.5 in)
1953
20.3 mm (0.8 in)
1954
18.3 mm (0.7 in)
1955
30.7 mm (1.2 in)
1956
23.1 mm (0.9 in)
1957
23.9 mm (0.9 in)
1958
19.9 mm (0.8 in)
1959
26.4 mm (1.0 in)
1960
15.9 mm (0.6 in)
1961
24.4 mm (1.0 in)
1962
24.1 mm (0.9 in)
1963
20.5 mm (0.8 in)
1964
50.5 mm (2.0 in)
1965
14.3 mm (0.6 in)
1966
41.4 mm (1.6 in)
1967
13.4 mm (0.5 in)
1968
23.1 mm (0.9 in)
1969
17.3 mm (0.7 in)
1970
42.4 mm (1.7 in)
1971
35.8 mm (1.4 in)
1972
43.1 mm (1.7 in)
1973
44.9 mm (1.8 in)
1974
28.2 mm (1.1 in)
1975
30.7 mm (1.2 in)
1976
12.7 mm (0.5 in)
1977
43.3 mm (1.7 in)
1978
22.4 mm (0.9 in)
1979
20.0 mm (0.8 in)
1980
31.2 mm (1.2 in)
1981
30.1 mm (1.2 in)
1982
32.5 mm (1.3 in)
1983
23.9 mm (0.9 in)
1984
21.0 mm (0.8 in)
1985
18.9 mm (0.7 in)
1986
49.9 mm (2.0 in)
1987
37.9 mm (1.5 in)
1988
26.9 mm (1.1 in)
1989
20.5 mm (0.8 in)
1990
26.2 mm (1.0 in)
1991
34.8 mm (1.4 in)
1992
25.1 mm (1.0 in)
1993
18.3 mm (0.7 in)
1994
21.1 mm (0.8 in)
1995
29.5 mm (1.2 in)
1996
27.9 mm (1.1 in)
1997
20.6 mm (0.8 in)
1998
20.1 mm (0.8 in)
1999
11.1 mm (0.4 in)
2000
16.2 mm (0.6 in)
2001
24.2 mm (1.0 in)
2002
20.3 mm (0.8 in)
2003
32.8 mm (1.3 in)
2004
39.4 mm (1.6 in)
2005
32.6 mm (1.3 in)
2006
30.3 mm (1.2 in)
2007
23.6 mm (0.9 in)
2008
15.8 mm (0.6 in)
2009
33.3 mm (1.3 in)
2010
23.3 mm (0.9 in)
2011
38.7 mm (1.5 in)
2012
23.9 mm (0.9 in)
2013
34.9 mm (1.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at Sunnyside, 1894 to 2013. The record is 120 days in 1949, marked on the chart; the median year is 57 days.
Longest dry spell (CDD) at Sunnyside by year
Year
Longest dry spell (CDD)
1894
17 days
1895
63 days
1896
58 days
1897
55 days
1898
48 days
1899
68 days
1900
34 days
1901
55 days
1902
78 days
1903
48 days
1904
36 days
1905
40 days
1906
89 days
1907
42 days
1908
59 days
1909
66 days
1910
56 days
1911
40 days
1912
33 days
1913
90 days
1914
55 days
1915
74 days
1916
61 days
1917
74 days
1918
57 days
1919
97 days
1920
38 days
1921
44 days
1922
61 days
1923
35 days
1924
42 days
1925
89 days
1926
67 days
1927
104 days
1928
53 days
1929
99 days
1930
66 days
1931
80 days
1932
113 days
1933
40 days
1934
55 days
1935
48 days
1936
57 days
1937
60 days
1938
36 days
1939
59 days
1940
54 days
1941
31 days
1942
45 days
1943
64 days
1944
59 days
1945
65 days
1946
53 days
1947
44 days
1948
32 days
1949
120 days
1950
76 days
1951
54 days
1952
45 days
1953
51 days
1954
40 days
1955
42 days
1956
48 days
1957
44 days
1958
72 days
1959
61 days
1960
45 days
1961
55 days
1962
69 days
1963
55 days
1964
56 days
1965
54 days
1966
79 days
1967
100 days
1968
86 days
1969
85 days
1970
97 days
1971
42 days
1972
71 days
1973
117 days
1974
100 days
1975
42 days
1976
78 days
1977
82 days
1978
78 days
1979
44 days
1980
65 days
1981
75 days
1982
41 days
1983
27 days
1984
82 days
1985
54 days
1986
60 days
1987
106 days
1988
102 days
1989
59 days
1990
74 days
1991
77 days
1992
44 days
1993
65 days
1994
68 days
1995
32 days
1996
57 days
1997
31 days
1998
30 days
1999
46 days
2000
91 days
2001
33 days
2002
45 days
2003
66 days
2004
39 days
2005
43 days
2006
47 days
2007
30 days
2008
65 days
2009
64 days
2010
41 days
2011
69 days
2012
84 days
2013
56 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
106 years with a frost
Across 106 years with a frost, the median last spring frost at Sunnyside falls on 2 May and the median first autumn frost on 7 October, which leaves a median of 155 days between them.
In 1975 to 2012 the median growing season was 175 days. That is 33 days more than in 1895 to 1928.
Fitted over all years, the growing season changes by +3.7 days per decade at this station.
Frost dates and growing season at Sunnyside
Measure
Median, all years
Earliest period (1895 to 1928)
Recent period (1975 to 2012)
Recent against earliest
Fitted trend
Last spring frost
2 May
12 May
21 April
21 days earlier
-2.2 days per decade
First autumn frost
7 October
1 October
16 October
15 days later
+1.4 days per decade
Growing days
155 days
142 days
175 days
33 days more
+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
106 years, 1895 to 2012
A day with at least 16.0 mm (0.6 in) of rain is expected about once in 2 years. A day with at least 42.7 mm (1.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Sunnyside: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
16.0 mm (0.6 in)
5 years
21.5 mm (0.8 in)
10 years
25.7 mm (1.0 in)
25 years
31.9 mm (1.3 in)
50 years
37.0 mm (1.5 in)
100 years
42.7 mm (1.7 in)
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 106 years of values from 1895 to 2012.
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: 46.2 mm (1.8 in) in 1947; 40.6 mm (1.6 in) in 1938; 40.6 mm (1.6 in) in 1972.
Station Changes
2 suspected
2 changes were suspected in the annual mean temperature of Sunnyside, at 1922 and 1948. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1922 ran 0.6 C (1.0 F) lower than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1948 ran 0.2 C (0.4 F) higher than in the years before (possible change).
Suspected changes in the annual mean temperature at Sunnyside, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1922
-0.6
-1.0
likely
5
1948
+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.
Download the Data
Data for Sunnyside standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Sunnyside 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.