Record envelope, standing records and threshold days for Whiteriver 1 SW (USC00029271), Arizona, United States, with 113 years of record.
Key Facts for Whiteriver 1 SW
Whiteriver 1 SW (USC00029271) is a weather station in Arizona, United States at 33.82 latitude and -109.98 longitude, 1,576 m (5,170 ft) above sea level.
The station reports from 1900 to 2012, 113 years of record.
1,464 records set at Whiteriver 1 SW still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Whiteriver 1 SW set a daily record low minimum temperature of -12.8 C (9.0 F) on 27 February 2011.
About the Station
Location: Arizona, United States, 33.82 latitude, -109.98 longitude.
Elevation: 1,576 m (5,170 ft).
Period of record: 1900 to 2012, 113 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 Whiteriver 1 SW. 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 Whiteriver 1 SW, 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)
-25.0 C (-13.0 F)
n/a
n/a
Feb
25.6 C (78.1 F)
-21.1 C (-6.0 F)
n/a
n/a
Mar
30.0 C (86.0 F)
-16.7 C (1.9 F)
n/a
n/a
Apr
36.7 C (98.1 F)
-10.0 C (14.0 F)
n/a
n/a
May
37.8 C (100.0 F)
-7.8 C (18.0 F)
n/a
n/a
Jun
40.0 C (104.0 F)
-1.1 C (30.0 F)
n/a
n/a
Jul
41.7 C (107.1 F)
3.9 C (39.0 F)
n/a
n/a
Aug
38.9 C (102.0 F)
1.1 C (34.0 F)
n/a
n/a
Sep
37.8 C (100.0 F)
-3.9 C (25.0 F)
n/a
n/a
Oct
33.9 C (93.0 F)
-8.3 C (17.1 F)
n/a
n/a
Nov
32.8 C (91.0 F)
-21.7 C (-7.1 F)
n/a
n/a
Dec
26.1 C (79.0 F)
-24.4 C (-11.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Whiteriver 1 SW still stand. 1917 holds the most, with 84.
Standing records at Whiteriver 1 SW by the year they were set
Year set
Standing records
1900
13
1901
29
1902
25
1903
14
1904
16
1905
18
1906
15
1907
11
1908
10
1909
37
1910
18
1911
15
1912
33
1913
29
1914
17
1915
12
1916
25
1917
84
1918
17
1919
11
1920
4
1921
21
1922
10
1923
5
1924
11
1925
14
1926
6
1927
8
1928
9
1929
7
1930
17
1931
13
1932
6
1933
10
1934
9
1940
6
1941
13
1942
17
1943
27
1944
11
1945
11
1946
17
1947
13
1948
14
1949
57
1950
24
1951
18
1952
9
1953
13
1954
8
1955
14
1956
19
1957
19
1959
12
1960
11
1961
11
1962
15
1963
27
1964
10
1965
24
1966
9
1967
4
1968
12
1969
13
1970
8
1971
19
1972
10
1973
10
1974
9
1975
19
1976
13
1977
8
1978
16
1979
10
1980
6
1981
6
1982
9
1983
6
1984
4
1985
8
1986
19
1987
10
1988
13
1989
16
1990
13
1991
8
1992
8
1993
6
1994
4
1995
7
1996
4
1997
2
1998
11
1999
15
2000
14
2001
7
2002
8
2003
23
2004
9
2005
11
2006
10
2007
13
2008
7
2009
1
2010
4
2011
3
All-Time Record Progression
9 new records
9 all-time records were set at Whiteriver 1 SW between 30 July 1932 and 12 March 2006. Each dot is a new record.
When Whiteriver 1 SW set new all-time records
Date
Kind
Detail
1932-07-30
Record daily precipitation
Record daily precipitation 102.1 mm (4.0 in)
1942-01-02
Record snow depth
Record snow depth 30.5 cm (12.0 in)
1948-07-15
Record high maximum temperature
Record high maximum temperature 41.1 C (106.0 F)
1949-01-04
Record low maximum temperature
Record low maximum temperature -8.3 C (17.1 F)
1960-01-17
Record daily snowfall
Record daily snowfall 41.7 cm (16.4 in)
1960-01-17
Record snow depth
Record snow depth 53.3 cm (21.0 in)
1986-09-19
Record high minimum temperature
Record high minimum temperature 26.1 C (79.0 F)
2003-07-09
Record high maximum temperature
Record high maximum temperature 41.7 C (107.1 F)
2006-03-12
Record daily snowfall
Record daily snowfall 45.7 cm (18.0 in)
Wettest Day of Each Month
Jul: 102.1 mm (4.0 in)
The wettest day on record for each calendar month at Whiteriver 1 SW. The most was 102.1 mm (4.0 in) on 30 July 1932.
Record daily precipitation for each month at Whiteriver 1 SW
Month
Record daily precipitation (mm)
Date
Jan
76.2 mm (3.0 in)
10 January 1905
Feb
49.8 mm (2.0 in)
8 February 1994
Mar
54.6 mm (2.1 in)
9 March 1912
Apr
53.3 mm (2.1 in)
2 April 1905
May
35.1 mm (1.4 in)
20 May 1976
Jun
42.4 mm (1.7 in)
26 June 1954
Jul
102.1 mm (4.0 in)
30 July 1932
Aug
86.4 mm (3.4 in)
28 August 1991
Sep
92.5 mm (3.6 in)
3 September 1994
Oct
73.9 mm (2.9 in)
5 October 1972
Nov
55.9 mm (2.2 in)
25 November 1918
Dec
48.8 mm (1.9 in)
16 December 1908
Period of Record Coverage
1900 to 2012
Complete yearUnder 90 percent of days
108 years of record at Whiteriver 1 SW, 1900 to 2012. 38 years have data for under 90 percent of days and are left out of rankings: 1916, 1917, 1918, 1919, 1920, 1921, 1933, 1934 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 61 complete years at Whiteriver 1 SW, 1902 to 2006. Blue stripes are years cooler than the station's own mean of 12.7 C (54.8 F); red stripes are warmer. The coolest year was 1912, at 11.3 C (52.3 F), and the warmest was 1943, at 14.3 C (57.7 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Whiteriver 1 SW as warming stripes, 1902 to 2006
Year
Annual mean temperature
Difference from the station mean
1902
12.2 C
-0.48 C
1903
11.9 C
-0.77 C
1904
12.5 C
-0.23 C
1905
11.8 C
-0.87 C
1907
13.2 C
+0.52 C
1908
12.5 C
-0.17 C
1909
11.7 C
-0.97 C
1912
11.3 C
-1.41 C
1914
13.1 C
+0.39 C
1915
11.7 C
-1.00 C
1923
11.9 C
-0.80 C
1924
12.4 C
-0.33 C
1925
12.6 C
-0.13 C
1926
12.0 C
-0.64 C
1927
12.3 C
-0.35 C
1928
13.0 C
+0.29 C
1929
12.3 C
-0.37 C
1930
12.3 C
-0.43 C
1931
12.5 C
-0.19 C
1932
12.2 C
-0.49 C
1941
13.3 C
+0.57 C
1942
13.6 C
+0.96 C
1943
14.3 C
+1.61 C
1944
12.5 C
-0.21 C
1945
12.5 C
-0.23 C
1946
13.1 C
+0.44 C
1947
13.0 C
+0.35 C
1948
13.0 C
+0.35 C
1951
12.7 C
+0.01 C
1953
13.0 C
+0.31 C
1954
13.9 C
+1.22 C
1955
12.6 C
-0.12 C
1956
13.1 C
+0.42 C
1957
13.2 C
+0.53 C
1960
13.0 C
+0.29 C
1961
13.0 C
+0.30 C
1962
13.2 C
+0.51 C
1963
13.3 C
+0.63 C
1964
12.1 C
-0.62 C
1965
12.5 C
-0.15 C
1966
13.1 C
+0.39 C
1967
12.7 C
-0.02 C
1968
12.4 C
-0.33 C
1969
13.1 C
+0.40 C
1970
12.5 C
-0.20 C
1971
12.1 C
-0.56 C
1972
12.9 C
+0.17 C
1973
12.1 C
-0.63 C
1974
12.8 C
+0.12 C
1975
11.9 C
-0.80 C
1976
12.4 C
-0.26 C
1977
13.0 C
+0.35 C
1978
13.0 C
+0.34 C
1979
12.5 C
-0.17 C
1980
13.0 C
+0.28 C
1981
13.7 C
+1.06 C
1982
12.5 C
-0.21 C
1983
12.7 C
+0.04 C
1984
12.7 C
+0.06 C
1985
12.7 C
+0.06 C
2006
13.8 C
+1.07 C
The annual mean temperature here has risen by 0.09 C (0.03 to 0.14) per decade over 1902 to 2006. In Fahrenheit: 0.2 F (0.1 to 0.3) per decade. The slope is a straight line fitted to 61 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Whiteriver 1 SW
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.09 C (0.03 to 0.14) per decade
0.2 F (0.1 to 0.3) per decade
1902 to 2006
61
Rise
Mean daily maximum
-0.12 C (-0.20 to -0.04) per decade
-0.2 F (-0.4 to -0.1) per decade
1902 to 2006
61
Fall
Mean daily minimum
0.3 C (0.2 to 0.4) per decade
0.5 F (0.4 to 0.6) per decade
1902 to 2006
61
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
1900 to 2012
Yearly extremes at Whiteriver 1 SW: 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)
2003
37.2 C (99.0 F)
108
Coldest night (TNn)
-25.0 C (-13.0 F)
1919
-14.7 C (5.5 F)
108
Wettest day (Rx1day)
102.1 mm (4.0 in)
1932
38.4 mm (1.5 in)
108
Wettest five days (Rx5day)
140.2 mm (5.5 in)
2006
58.8 mm (2.3 in)
106
Longest dry spell (CDD)
151 days
1972
47 days
108
Hottest day (TXx)
The hottest day of the year at Whiteriver 1 SW, 1900 to 2012. The record is 41.7 C (107.1 F) in 2003, marked on the chart; the median year is 37.2 C (99.0 F).
Hottest day (TXx) at Whiteriver 1 SW by year
Year
Hottest day (TXx)
1900
38.9 C (102.0 F)
1901
38.9 C (102.0 F)
1902
40.0 C (104.0 F)
1903
37.8 C (100.0 F)
1904
37.2 C (99.0 F)
1905
37.2 C (99.0 F)
1906
36.7 C (98.1 F)
1907
36.7 C (98.1 F)
1908
36.7 C (98.1 F)
1909
40.0 C (104.0 F)
1910
36.7 C (98.1 F)
1911
38.9 C (102.0 F)
1912
37.8 C (100.0 F)
1913
40.6 C (105.1 F)
1914
37.8 C (100.0 F)
1915
37.8 C (100.0 F)
1916
36.7 C (98.1 F)
1917
37.8 C (100.0 F)
1918
40.0 C (104.0 F)
1919
36.7 C (98.1 F)
1920
23.3 C (73.9 F)
1921
36.1 C (97.0 F)
1922
38.3 C (100.9 F)
1923
37.2 C (99.0 F)
1924
39.4 C (102.9 F)
1925
38.9 C (102.0 F)
1926
36.1 C (97.0 F)
1927
36.1 C (97.0 F)
1928
37.8 C (100.0 F)
1929
38.9 C (102.0 F)
1930
37.2 C (99.0 F)
1931
37.8 C (100.0 F)
1932
37.2 C (99.0 F)
1933
37.2 C (99.0 F)
1934
35.6 C (96.1 F)
1940
38.3 C (100.9 F)
1941
37.8 C (100.0 F)
1942
40.6 C (105.1 F)
1943
39.4 C (102.9 F)
1944
37.8 C (100.0 F)
1945
37.2 C (99.0 F)
1946
36.7 C (98.1 F)
1947
37.2 C (99.0 F)
1948
41.1 C (106.0 F)
1949
37.2 C (99.0 F)
1950
38.9 C (102.0 F)
1951
39.4 C (102.9 F)
1952
36.1 C (97.0 F)
1953
37.8 C (100.0 F)
1954
37.8 C (100.0 F)
1955
37.8 C (100.0 F)
1956
38.9 C (102.0 F)
1957
40.0 C (104.0 F)
1958
20.6 C (69.1 F)
1959
37.2 C (99.0 F)
1960
38.3 C (100.9 F)
1961
37.8 C (100.0 F)
1962
37.2 C (99.0 F)
1963
37.8 C (100.0 F)
1964
37.2 C (99.0 F)
1965
37.2 C (99.0 F)
1966
36.7 C (98.1 F)
1967
38.3 C (100.9 F)
1968
36.7 C (98.1 F)
1969
37.2 C (99.0 F)
1970
38.3 C (100.9 F)
1971
38.9 C (102.0 F)
1972
36.7 C (98.1 F)
1973
38.9 C (102.0 F)
1974
38.9 C (102.0 F)
1975
35.6 C (96.1 F)
1976
36.1 C (97.0 F)
1977
35.6 C (96.1 F)
1978
36.7 C (98.1 F)
1979
37.2 C (99.0 F)
1980
37.8 C (100.0 F)
1981
38.3 C (100.9 F)
1982
35.6 C (96.1 F)
1983
36.7 C (98.1 F)
1984
35.6 C (96.1 F)
1985
37.8 C (100.0 F)
1986
36.7 C (98.1 F)
1987
36.1 C (97.0 F)
1988
35.0 C (95.0 F)
1989
37.2 C (99.0 F)
1990
38.3 C (100.9 F)
1991
38.3 C (100.9 F)
1992
35.0 C (95.0 F)
1993
35.6 C (96.1 F)
1994
37.8 C (100.0 F)
1995
37.8 C (100.0 F)
1996
36.7 C (98.1 F)
1997
36.7 C (98.1 F)
1998
38.9 C (102.0 F)
1999
36.7 C (98.1 F)
2000
38.9 C (102.0 F)
2001
36.7 C (98.1 F)
2002
38.9 C (102.0 F)
2003
41.7 C (107.1 F)
2004
36.1 C (97.0 F)
2005
39.4 C (102.9 F)
2006
39.4 C (102.9 F)
2007
38.9 C (102.0 F)
2008
36.7 C (98.1 F)
2009
35.0 C (95.0 F)
2010
36.1 C (97.0 F)
2011
28.9 C (84.0 F)
2012
19.4 C (66.9 F)
Coldest night (TNn)
The coldest night of the year at Whiteriver 1 SW, 1900 to 2012. The record is -25.0 C (-13.0 F) in 1919, marked on the chart; the median year is -14.7 C (5.5 F).
Coldest night (TNn) at Whiteriver 1 SW by year
Year
Coldest night (TNn)
1900
-11.7 C (10.9 F)
1901
-14.4 C (6.1 F)
1902
-12.2 C (10.0 F)
1903
-15.6 C (3.9 F)
1904
-16.7 C (1.9 F)
1905
-24.4 C (-11.9 F)
1906
-21.1 C (-6.0 F)
1907
-14.4 C (6.1 F)
1908
-21.1 C (-6.0 F)
1909
-18.9 C (-2.0 F)
1910
-20.0 C (-4.0 F)
1911
-20.6 C (-5.1 F)
1912
-18.9 C (-2.0 F)
1913
-20.6 C (-5.1 F)
1914
-18.3 C (-0.9 F)
1915
-17.8 C (0.0 F)
1916
-17.2 C (1.0 F)
1917
-13.9 C (7.0 F)
1918
-18.9 C (-2.0 F)
1919
-25.0 C (-13.0 F)
1920
-6.1 C (21.0 F)
1921
-12.2 C (10.0 F)
1922
-14.4 C (6.1 F)
1923
-12.2 C (10.0 F)
1924
-20.0 C (-4.0 F)
1925
-18.3 C (-0.9 F)
1926
-22.2 C (-8.0 F)
1927
-14.4 C (6.1 F)
1928
-18.3 C (-0.9 F)
1929
-15.0 C (5.0 F)
1930
-16.7 C (1.9 F)
1931
-21.7 C (-7.1 F)
1932
-19.4 C (-2.9 F)
1933
-17.2 C (1.0 F)
1934
-15.6 C (3.9 F)
1940
-8.9 C (16.0 F)
1941
-11.1 C (12.0 F)
1942
-15.0 C (5.0 F)
1943
-17.2 C (1.0 F)
1944
-13.3 C (8.1 F)
1945
-15.6 C (3.9 F)
1946
-20.0 C (-4.0 F)
1947
-15.6 C (3.9 F)
1948
-21.1 C (-6.0 F)
1949
-25.0 C (-13.0 F)
1950
-15.0 C (5.0 F)
1951
-13.9 C (7.0 F)
1952
-14.4 C (6.1 F)
1953
-15.0 C (5.0 F)
1954
-12.8 C (9.0 F)
1955
-15.6 C (3.9 F)
1956
-17.8 C (0.0 F)
1957
-11.1 C (12.0 F)
1958
-7.2 C (19.0 F)
1959
-11.1 C (12.0 F)
1960
-22.2 C (-8.0 F)
1961
-12.2 C (10.0 F)
1962
-16.7 C (1.9 F)
1963
-18.9 C (-2.0 F)
1964
-15.6 C (3.9 F)
1965
-19.4 C (-2.9 F)
1966
-12.8 C (9.0 F)
1967
-15.6 C (3.9 F)
1968
-21.1 C (-6.0 F)
1969
-13.9 C (7.0 F)
1970
-16.7 C (1.9 F)
1971
-23.9 C (-11.0 F)
1972
-12.8 C (9.0 F)
1973
-12.8 C (9.0 F)
1974
-13.9 C (7.0 F)
1975
-13.9 C (7.0 F)
1976
-18.3 C (-0.9 F)
1977
-13.3 C (8.1 F)
1978
-18.9 C (-2.0 F)
1979
-17.2 C (1.0 F)
1980
-9.4 C (15.1 F)
1981
-11.1 C (12.0 F)
1982
-12.8 C (9.0 F)
1983
-10.6 C (12.9 F)
1984
-12.2 C (10.0 F)
1985
-13.3 C (8.1 F)
1986
-11.7 C (10.9 F)
1987
-19.4 C (-2.9 F)
1988
-14.4 C (6.1 F)
1989
-13.3 C (8.1 F)
1990
-15.6 C (3.9 F)
1991
-13.3 C (8.1 F)
1992
-15.6 C (3.9 F)
1993
-10.6 C (12.9 F)
1994
-12.8 C (9.0 F)
1995
-14.4 C (6.1 F)
1996
-13.3 C (8.1 F)
1997
-10.6 C (12.9 F)
1998
-11.7 C (10.9 F)
1999
-12.2 C (10.0 F)
2000
-11.7 C (10.9 F)
2001
-17.8 C (0.0 F)
2002
-16.7 C (1.9 F)
2003
-13.3 C (8.1 F)
2004
-11.1 C (12.0 F)
2005
-12.2 C (10.0 F)
2006
-14.4 C (6.1 F)
2007
-12.8 C (9.0 F)
2008
-13.9 C (7.0 F)
2009
-10.0 C (14.0 F)
2010
-13.9 C (7.0 F)
2011
-22.8 C (-9.0 F)
2012
-6.1 C (21.0 F)
Wettest day (Rx1day)
The wettest day of the year at Whiteriver 1 SW, 1900 to 2012. The record is 102.1 mm (4.0 in) in 1932, marked on the chart; the median year is 38.4 mm (1.5 in).
Wettest day (Rx1day) at Whiteriver 1 SW by year
Year
Wettest day (Rx1day)
1900
48.3 mm (1.9 in)
1901
43.2 mm (1.7 in)
1902
34.3 mm (1.4 in)
1903
20.3 mm (0.8 in)
1904
40.6 mm (1.6 in)
1905
76.2 mm (3.0 in)
1906
41.9 mm (1.6 in)
1907
50.8 mm (2.0 in)
1908
48.8 mm (1.9 in)
1909
42.9 mm (1.7 in)
1910
33.0 mm (1.3 in)
1911
57.2 mm (2.3 in)
1912
54.6 mm (2.1 in)
1913
15.2 mm (0.6 in)
1914
12.7 mm (0.5 in)
1915
34.8 mm (1.4 in)
1916
63.8 mm (2.5 in)
1917
47.0 mm (1.9 in)
1918
55.9 mm (2.2 in)
1919
37.6 mm (1.5 in)
1920
15.5 mm (0.6 in)
1921
38.6 mm (1.5 in)
1922
41.9 mm (1.6 in)
1923
39.4 mm (1.6 in)
1924
39.4 mm (1.6 in)
1925
37.3 mm (1.5 in)
1926
23.1 mm (0.9 in)
1927
33.8 mm (1.3 in)
1928
26.4 mm (1.0 in)
1929
50.5 mm (2.0 in)
1930
33.5 mm (1.3 in)
1931
51.6 mm (2.0 in)
1932
102.1 mm (4.0 in)
1933
29.2 mm (1.1 in)
1934
21.1 mm (0.8 in)
1940
43.9 mm (1.7 in)
1941
47.5 mm (1.9 in)
1942
21.3 mm (0.8 in)
1943
47.2 mm (1.9 in)
1944
42.2 mm (1.7 in)
1945
30.7 mm (1.2 in)
1946
42.7 mm (1.7 in)
1947
48.0 mm (1.9 in)
1948
25.9 mm (1.0 in)
1949
35.1 mm (1.4 in)
1950
21.6 mm (0.9 in)
1951
37.3 mm (1.5 in)
1952
38.4 mm (1.5 in)
1953
19.8 mm (0.8 in)
1954
42.4 mm (1.7 in)
1955
55.9 mm (2.2 in)
1956
60.7 mm (2.4 in)
1957
38.4 mm (1.5 in)
1958
0.0 mm (0.00 in)
1959
49.8 mm (2.0 in)
1960
32.0 mm (1.3 in)
1961
57.2 mm (2.3 in)
1962
25.9 mm (1.0 in)
1963
34.3 mm (1.4 in)
1964
20.3 mm (0.8 in)
1965
33.0 mm (1.3 in)
1966
27.4 mm (1.1 in)
1967
32.3 mm (1.3 in)
1968
30.2 mm (1.2 in)
1969
32.5 mm (1.3 in)
1970
41.9 mm (1.6 in)
1971
42.7 mm (1.7 in)
1972
73.9 mm (2.9 in)
1973
26.7 mm (1.1 in)
1974
37.3 mm (1.5 in)
1975
29.2 mm (1.1 in)
1976
35.1 mm (1.4 in)
1977
68.8 mm (2.7 in)
1978
53.6 mm (2.1 in)
1979
36.1 mm (1.4 in)
1980
61.7 mm (2.4 in)
1981
26.9 mm (1.1 in)
1982
46.5 mm (1.8 in)
1983
40.1 mm (1.6 in)
1984
59.9 mm (2.4 in)
1985
28.7 mm (1.1 in)
1986
41.1 mm (1.6 in)
1987
38.1 mm (1.5 in)
1988
76.2 mm (3.0 in)
1989
38.1 mm (1.5 in)
1990
36.8 mm (1.4 in)
1991
86.4 mm (3.4 in)
1992
39.1 mm (1.5 in)
1993
38.1 mm (1.5 in)
1994
92.5 mm (3.6 in)
1995
25.4 mm (1.0 in)
1996
50.8 mm (2.0 in)
1997
41.7 mm (1.6 in)
1998
39.9 mm (1.6 in)
1999
38.1 mm (1.5 in)
2000
32.8 mm (1.3 in)
2001
51.1 mm (2.0 in)
2002
76.2 mm (3.0 in)
2003
34.8 mm (1.4 in)
2004
40.4 mm (1.6 in)
2005
26.2 mm (1.0 in)
2006
51.3 mm (2.0 in)
2007
32.5 mm (1.3 in)
2008
45.7 mm (1.8 in)
2009
37.6 mm (1.5 in)
2010
0.0 mm (0.00 in)
2011
5.1 mm (0.20 in)
2012
0.0 mm (0.00 in)
Wettest five days (Rx5day)
The wettest five days of the year at Whiteriver 1 SW, 1900 to 2012. The record is 140.2 mm (5.5 in) in 2006, marked on the chart; the median year is 58.8 mm (2.3 in).
Wettest five days (Rx5day) at Whiteriver 1 SW by year
Year
Wettest five days (Rx5day)
1900
123.5 mm (4.9 in)
1901
56.3 mm (2.2 in)
1902
54.6 mm (2.1 in)
1903
45.7 mm (1.8 in)
1904
63.5 mm (2.5 in)
1905
97.3 mm (3.8 in)
1906
64.0 mm (2.5 in)
1907
58.9 mm (2.3 in)
1908
61.0 mm (2.4 in)
1909
77.7 mm (3.1 in)
1910
44.9 mm (1.8 in)
1911
61.2 mm (2.4 in)
1912
78.9 mm (3.1 in)
1913
19.1 mm (0.8 in)
1914
31.8 mm (1.3 in)
1915
77.4 mm (3.0 in)
1916
136.2 mm (5.4 in)
1917
58.7 mm (2.3 in)
1918
102.6 mm (4.0 in)
1919
70.9 mm (2.8 in)
1920
52.3 mm (2.1 in)
1921
112.6 mm (4.4 in)
1922
58.6 mm (2.3 in)
1923
70.9 mm (2.8 in)
1924
47.3 mm (1.9 in)
1925
55.0 mm (2.2 in)
1926
39.8 mm (1.6 in)
1927
46.7 mm (1.8 in)
1928
44.5 mm (1.8 in)
1929
76.7 mm (3.0 in)
1930
96.8 mm (3.8 in)
1931
70.6 mm (2.8 in)
1932
111.2 mm (4.4 in)
1933
52.6 mm (2.1 in)
1934
32.5 mm (1.3 in)
1940
60.4 mm (2.4 in)
1941
97.6 mm (3.8 in)
1942
35.6 mm (1.4 in)
1943
68.7 mm (2.7 in)
1944
48.0 mm (1.9 in)
1945
42.2 mm (1.7 in)
1946
88.7 mm (3.5 in)
1947
70.1 mm (2.8 in)
1948
45.8 mm (1.8 in)
1949
57.7 mm (2.3 in)
1950
29.7 mm (1.2 in)
1951
87.3 mm (3.4 in)
1952
51.1 mm (2.0 in)
1953
43.0 mm (1.7 in)
1954
79.5 mm (3.1 in)
1955
91.3 mm (3.6 in)
1956
75.1 mm (3.0 in)
1957
53.3 mm (2.1 in)
1958
0.0 mm (0.00 in)
1959
116.1 mm (4.6 in)
1960
49.5 mm (1.9 in)
1961
95.5 mm (3.8 in)
1962
52.5 mm (2.1 in)
1963
51.5 mm (2.0 in)
1964
35.9 mm (1.4 in)
1965
69.6 mm (2.7 in)
1966
53.3 mm (2.1 in)
1967
57.5 mm (2.3 in)
1968
51.8 mm (2.0 in)
1969
43.4 mm (1.7 in)
1970
65.5 mm (2.6 in)
1971
62.8 mm (2.5 in)
1972
93.7 mm (3.7 in)
1973
43.7 mm (1.7 in)
1974
47.6 mm (1.9 in)
1975
46.2 mm (1.8 in)
1976
45.5 mm (1.8 in)
1977
73.9 mm (2.9 in)
1978
116.6 mm (4.6 in)
1979
50.0 mm (2.0 in)
1980
90.2 mm (3.6 in)
1981
63.2 mm (2.5 in)
1982
72.9 mm (2.9 in)
1983
121.1 mm (4.8 in)
1984
88.3 mm (3.5 in)
1985
40.9 mm (1.6 in)
1986
58.1 mm (2.3 in)
1987
38.9 mm (1.5 in)
1988
88.4 mm (3.5 in)
1989
42.4 mm (1.7 in)
1990
57.4 mm (2.3 in)
1991
122.0 mm (4.8 in)
1992
92.2 mm (3.6 in)
1993
60.9 mm (2.4 in)
1994
92.5 mm (3.6 in)
1995
25.4 mm (1.0 in)
1996
53.8 mm (2.1 in)
1997
45.5 mm (1.8 in)
1998
50.3 mm (2.0 in)
1999
62.7 mm (2.5 in)
2000
48.8 mm (1.9 in)
2001
60.3 mm (2.4 in)
2002
95.4 mm (3.8 in)
2003
62.3 mm (2.5 in)
2004
60.2 mm (2.4 in)
2005
47.8 mm (1.9 in)
2006
140.2 mm (5.5 in)
2007
46.7 mm (1.8 in)
2008
58.9 mm (2.3 in)
2009
37.6 mm (1.5 in)
2010
0.0 mm (0.00 in)
2011
n/a
2012
n/a
Longest dry spell (CDD)
The longest dry spell of the year at Whiteriver 1 SW, 1900 to 2012. The record is 151 days in 1972, marked on the chart; the median year is 47 days.
Longest dry spell (CDD) at Whiteriver 1 SW by year
Year
Longest dry spell (CDD)
1900
66 days
1901
50 days
1902
45 days
1903
68 days
1904
54 days
1905
34 days
1906
62 days
1907
53 days
1908
44 days
1909
83 days
1910
44 days
1911
64 days
1912
65 days
1913
55 days
1914
116 days
1915
43 days
1916
70 days
1917
102 days
1918
40 days
1919
29 days
1920
11 days
1921
38 days
1922
46 days
1923
54 days
1924
45 days
1925
41 days
1926
19 days
1927
41 days
1928
50 days
1929
47 days
1930
42 days
1931
40 days
1932
47 days
1933
41 days
1934
50 days
1940
17 days
1941
33 days
1942
63 days
1943
49 days
1944
52 days
1945
50 days
1946
73 days
1947
34 days
1948
38 days
1949
44 days
1950
47 days
1951
59 days
1952
45 days
1953
41 days
1954
34 days
1955
49 days
1956
58 days
1957
31 days
1958
31 days
1959
61 days
1960
37 days
1961
69 days
1962
64 days
1963
45 days
1964
70 days
1965
35 days
1966
40 days
1967
41 days
1968
45 days
1969
64 days
1970
61 days
1971
53 days
1972
151 days
1973
54 days
1974
81 days
1975
38 days
1976
40 days
1977
48 days
1978
52 days
1979
34 days
1980
56 days
1981
35 days
1982
51 days
1983
32 days
1984
71 days
1985
40 days
1986
54 days
1987
24 days
1988
41 days
1989
55 days
1990
58 days
1991
28 days
1992
36 days
1993
66 days
1994
41 days
1995
47 days
1996
61 days
1997
32 days
1998
67 days
1999
104 days
2000
80 days
2001
29 days
2002
91 days
2003
123 days
2004
93 days
2005
74 days
2006
62 days
2007
42 days
2008
65 days
2009
11 days
2010
31 days
2011
3 days
2012
1 day
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
61 years with a frost
Across 61 years with a frost, the median last spring frost at Whiteriver 1 SW falls on 7 May and the median first autumn frost on 17 October, which leaves a median of 164 days between them.
In 1955 to 2006 the median growing season was 165 days. That is 7 days more than in 1902 to 1953.
Fitted over all years, the growing season changes by +2.2 days per decade at this station.
Frost dates and growing season at Whiteriver 1 SW
Measure
Median, all years
Earliest period (1902 to 1953)
Recent period (1955 to 2006)
Recent against earliest
Fitted trend
Last spring frost
7 May
5 May
9 May
4 days later
-0.3 days per decade
First autumn frost
17 October
13 October
19 October
6 days later
+1.9 days per decade
Growing days
164 days
158 days
165 days
7 days more
+2.2 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
87 years, 1900 to 2008
A day with at least 39.1 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 85.1 mm (3.4 in) of rain is expected about once in 100 years.
Rainfall return levels at Whiteriver 1 SW: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
39.1 mm (1.5 in)
5 years
52.1 mm (2.1 in)
10 years
60.5 mm (2.4 in)
25 years
70.7 mm (2.8 in)
50 years
78.0 mm (3.1 in)
100 years
85.1 mm (3.4 in)
Longer than the 87 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, 87 years of values from 1900 to 2008.
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: 102.1 mm (4.0 in) in 1932; 76.2 mm (3.0 in) in 1905; 76.2 mm (3.0 in) in 2002.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Whiteriver 1 SW, at 1975. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1975 ran 0.2 C (0.3 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Whiteriver 1 SW, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1975
-0.2
-0.3
likely
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 Whiteriver 1 SW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Whiteriver 1 SW 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 2026-10-12 (12 October 2026). Records are computed by this site and are not official.