Riversdale Weather Records (SF000104560)

Record envelope, standing records and threshold days for Riversdale (SF000104560), South Africa, with 150 years of record.

Key Facts for Riversdale

Riversdale (SF000104560) is a weather station in South Africa at -34.08 latitude and 21.25 longitude, 116 m (381 ft) above sea level.
The station reports from 1877 to 2026, 150 years of record.
1,464 records set at Riversdale still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Riversdale set a daily record precipitation of 36.0 mm (1.4 in) on 18 September 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

Location: South Africa, -34.08 latitude, 21.25 longitude.
Elevation: 116 m (381 ft).
Period of record: 1877 to 2026, 150 years.
Eligible elements: prcp.

Daily Record Envelope and 2026

12 days at or beyond a record

The band shows the record high and record low for each calendar day at Riversdale. The lines show the 2026 daily maximum and minimum. 12 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Riversdale, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	43.1 C (109.6 F)	10.1 C (50.2 F)	35.3 C (95.5 F)	16.2 C (61.2 F)
Feb	41.5 C (106.7 F)	6.6 C (43.9 F)	36.2 C (97.2 F)	13.6 C (56.5 F)
Mar	42.1 C (107.8 F)	7.0 C (44.6 F)	38.8 C (101.8 F)	11.4 C (52.5 F)
Apr	39.4 C (102.9 F)	5.4 C (41.7 F)	34.3 C (93.7 F)	5.6 C (42.1 F)
May	34.6 C (94.3 F)	2.8 C (37.0 F)	30.2 C (86.4 F)	6.5 C (43.7 F)
Jun	32.5 C (90.5 F)	0.0 C (32.0 F)	23.0 C (73.4 F)	3.8 C (38.8 F)
Jul	31.8 C (89.2 F)	-0.4 C (31.3 F)	28.2 C (82.8 F)	3.9 C (39.0 F)
Aug	34.3 C (93.7 F)	0.1 C (32.2 F)	29.6 C (85.3 F)	5.3 C (41.5 F)
Sep	39.1 C (102.4 F)	1.5 C (34.7 F)	31.5 C (88.7 F)	7.0 C (44.6 F)
Oct	39.5 C (103.1 F)	3.4 C (38.1 F)	35.3 C (95.5 F)	9.3 C (48.7 F)
Nov	40.0 C (104.0 F)	5.5 C (41.9 F)	n/a	n/a
Dec	41.5 C (106.7 F)	7.4 C (45.3 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Riversdale still stand. 2025 holds the most, with 105.

Standing records at Riversdale by the year they were set
Year set	Standing records
1980	1
1981	1
1982	6
1983	1
1984	2
1987	4
1988	4
1989	8
1992	3
1993	3
1994	3
1996	1
1997	1
1998	1
1999	2
2000	1
2002	3
2003	4
2004	3
2005	1
2006	1
2007	24
2008	77
2009	56
2010	75
2011	48
2012	58
2013	46
2014	60
2015	63
2016	67
2017	101
2018	80
2019	68
2020	79
2021	77
2022	88
2023	74
2024	79
2025	105
2026	85

All-Time Record Progression

2 new records

2 all-time records were set at Riversdale between 23 November 1928 and 8 October 1962. Each dot is a new record.

When Riversdale set new all-time records
Date	Kind	Detail
1928-11-23	Record daily precipitation	Record daily precipitation 135.9 mm (5.4 in)
1962-10-08	Record daily precipitation	Record daily precipitation 180.5 mm (7.1 in)

Wettest Day of Each Month

Oct: 180.5 mm (7.1 in)

The wettest day on record for each calendar month at Riversdale. The most was 180.5 mm (7.1 in) on 8 October 1962.

Record daily precipitation for each month at Riversdale
Month	Record daily precipitation (mm)	Date
Jan	80.0 mm (3.1 in)	7 January 2014
Feb	76.2 mm (3.0 in)	12 February 1902
Mar	113.8 mm (4.5 in)	3 March 1887
Apr	107.6 mm (4.2 in)	26 April 1981
May	56.0 mm (2.2 in)	8 May 1977
Jun	95.3 mm (3.8 in)	16 June 1908
Jul	78.5 mm (3.1 in)	13 July 1959
Aug	110.5 mm (4.4 in)	20 August 1962
Sep	66.0 mm (2.6 in)	10 September 1885
Oct	180.5 mm (7.1 in)	8 October 1962
Nov	135.9 mm (5.4 in)	23 November 1928
Dec	104.1 mm (4.1 in)	15 December 1906

Period of Record Coverage

1975 to 2026

45 years of record at Riversdale, 1975 to 2026. 30 years have data for under 90 percent of days and are left out of rankings: 1975, 1982, 1983, 1984, 1985, 1986, 1987, 1988 and others.

Days with data per year at Riversdale
Year	Days with data	Share of year	Complete
1975	1	0%	No
1982	14	4%	No
1983	7	2%	No
1984	6	2%	No
1985	5	1%	No
1986	5	1%	No
1987	11	3%	No
1988	17	5%	No
1989	24	7%	No
1990	5	1%	No
1992	8	2%	No
1993	8	2%	No
1994	12	3%	No
1995	4	1%	No
1996	5	1%	No
1997	4	1%	No
1998	6	2%	No
1999	3	1%	No
2000	1	0%	No
2001	1	0%	No
2002	7	2%	No
2003	11	3%	No
2004	17	5%	No
2005	9	2%	No
2006	1	0%	No
2007	105	29%	No
2008	335	92%	Yes
2009	334	92%	Yes
2010	330	90%	Yes
2011	330	90%	Yes
2012	293	80%	No
2013	234	64%	No
2014	354	97%	Yes
2015	355	97%	Yes
2016	342	93%	Yes
2017	353	97%	Yes
2018	336	92%	Yes
2019	349	96%	Yes
2020	354	97%	Yes
2021	355	97%	Yes
2022	345	95%	Yes
2023	350	96%	Yes
2024	338	92%	Yes
2025	281	77%	No
2026	239	65%	No

Latest Records

Latest records at Riversdale
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 September 2026	Riversdale, ZA	daily rain (Provisional)	36.0 mm (1.4 in)	22.8 mm (0.9 in)	112 years	70 of 100 (Major)
17 September 2026	Riversdale, ZA	daily rain (Provisional)	26.0 mm (1.0 in)	12.8 mm (0.5 in)	133 years	57 of 100 (Notable)
13 September 2026	Riversdale, ZA	daily rain (Provisional)	25.0 mm (1.0 in)	0.1 mm (0.00 in)	146 years	40 of 100 (Notable)
2 July 2026	Riversdale, ZA	daily rain	10.0 mm (0.4 in)	1.6 mm (0.06 in)	105 years	20 of 100 (Routine)
29 October 2024	Riversdale, ZA	daily rain	17.0 mm (0.7 in)	7.1 mm (0.28 in)	130 years	20 of 100 (Routine)
28 October 2024	Riversdale, ZA	daily rain	34.0 mm (1.3 in)	20.5 mm (0.8 in)	133 years	57 of 100 (Notable)
5 August 2024	Riversdale, ZA	daily rain	7.9 mm (0.31 in)	1.5 mm (0.06 in)	102 years	20 of 100 (Routine)
5 June 2024	Riversdale, ZA	daily rain	37.1 mm (1.5 in)	17.8 mm (0.7 in)	111 years	63 of 100 (Major)
4 June 2024	Riversdale, ZA	daily rain	15.0 mm (0.6 in)	2.3 mm (0.09 in)	116 years	20 of 100 (Routine)
17 January 2024	Riversdale, ZA	daily rain	7.9 mm (0.31 in)	0.3 mm (0.01 in)	92 years	20 of 100 (Routine)
25 September 2023	Riversdale, ZA	daily rain	26.9 mm (1.1 in)	6.3 mm (0.25 in)	136 years	48 of 100 (Notable)
14 June 2023	Riversdale, ZA	daily rain	16.0 mm (0.6 in)	7.1 mm (0.28 in)	12 years	20 of 100 (Routine)
18 May 2023	Riversdale, ZA	daily rain	17.0 mm (0.7 in)	9.4 mm (0.37 in)	116 years	20 of 100 (Routine)
6 March 2023	Riversdale, ZA	daily rain	55.9 mm (2.2 in)	44.0 mm (1.7 in)	128 years	80 of 100 (Exceptional)
5 March 2023	Riversdale, ZA	daily rain	33.0 mm (1.3 in)	7.1 mm (0.28 in)	144 years	48 of 100 (Notable)
24 June 2022	Riversdale, ZA	daily rain	30.0 mm (1.2 in)	16.3 mm (0.6 in)	116 years	61 of 100 (Major)
6 December 2021	Riversdale, ZA	daily rain	20.1 mm (0.8 in)	9.4 mm (0.37 in)	125 years	20 of 100 (Routine)
1 February 2021	Riversdale, ZA	daily rain	8.9 mm (0.35 in)	4.3 mm (0.17 in)	9 years	16 of 100 (Routine)
24 December 2020	Riversdale, ZA	daily rain	11.9 mm (0.5 in)	1.0 mm (0.04 in)	100 years	20 of 100 (Routine)
19 November 2020	Riversdale, ZA	daily rain	16.0 mm (0.6 in)	2.5 mm (0.10 in)	102 years	20 of 100 (Routine)

Climate Trend

14 complete years, 2008 to 2024

One stripe for each of 14 complete years at Riversdale, 2008 to 2024. Blue stripes are years cooler than the station's own mean of 18.9 C (65.9 F); red stripes are warmer. The coolest year was 2023, at 18.2 C (64.8 F), and the warmest was 2019, at 19.4 C (66.8 F). The strongest colour marks a difference of 0.7 C (1.3 F).

Annual mean temperature at Riversdale as warming stripes, 2008 to 2024
Year	Annual mean temperature	Difference from the station mean
2008	18.8 C	-0.10 C
2009	19.4 C	+0.50 C
2010	19.3 C	+0.40 C
2011	19.1 C	+0.25 C
2014	18.9 C	+0.04 C
2015	18.5 C	-0.32 C
2016	18.7 C	-0.14 C
2017	18.9 C	+0.04 C
2019	19.4 C	+0.50 C
2020	19.1 C	+0.23 C
2021	18.4 C	-0.49 C
2022	18.8 C	-0.08 C
2023	18.2 C	-0.65 C
2024	18.7 C	-0.16 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

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

1877 to 2026

Yearly extremes at Riversdale: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	43.1 C (109.6 F)	2022	36.4 C (97.5 F)	45
Coldest night (TNn)	-0.4 C (31.3 F)	2016	2.8 C (37.0 F)	45
Wettest day (Rx1day)	180.5 mm (7.1 in)	1962	35.6 mm (1.4 in)	121
Wettest five days (Rx5day)	181.0 mm (7.1 in)	1962	60.4 mm (2.4 in)	100
Longest dry spell (CDD)	184 days	1915	24 days	116

Hottest day (TXx)

The hottest day of the year at Riversdale, 1877 to 2026. The record is 43.1 C (109.6 F) in 2022, marked on the chart; the median year is 36.4 C (97.5 F).

Hottest day (TXx) at Riversdale by year
Year	Hottest day (TXx)
1877	n/a
1878	n/a
1879	n/a
1880	n/a
1881	n/a
1882	n/a
1883	n/a
1884	n/a
1885	n/a
1886	n/a
1887	n/a
1888	n/a
1889	n/a
1890	n/a
1891	n/a
1892	n/a
1893	n/a
1894	n/a
1895	n/a
1896	n/a
1897	n/a
1898	n/a
1899	n/a
1900	n/a
1901	n/a
1902	n/a
1903	n/a
1904	n/a
1905	n/a
1906	n/a
1907	n/a
1908	n/a
1909	n/a
1910	n/a
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	17.0 C (62.6 F)
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	30.0 C (86.0 F)
1983	33.0 C (91.4 F)
1984	29.1 C (84.4 F)
1985	36.4 C (97.5 F)
1986	31.5 C (88.7 F)
1987	33.1 C (91.6 F)
1988	35.4 C (95.7 F)
1989	36.4 C (97.5 F)
1990	34.4 C (93.9 F)
1992	34.9 C (94.8 F)
1993	33.4 C (92.1 F)
1994	36.9 C (98.4 F)
1995	35.5 C (95.9 F)
1996	30.0 C (86.0 F)
1997	34.2 C (93.6 F)
1998	31.4 C (88.5 F)
1999	29.9 C (85.8 F)
2000	38.0 C (100.4 F)
2001	24.4 C (75.9 F)
2002	33.0 C (91.4 F)
2003	33.4 C (92.1 F)
2004	39.6 C (103.3 F)
2005	30.5 C (86.9 F)
2006	20.9 C (69.6 F)
2007	35.4 C (95.7 F)
2008	40.8 C (105.4 F)
2009	40.2 C (104.4 F)
2010	41.5 C (106.7 F)
2011	39.6 C (103.3 F)
2012	39.2 C (102.6 F)
2013	40.2 C (104.4 F)
2014	40.0 C (104.0 F)
2015	42.1 C (107.8 F)
2016	40.2 C (104.4 F)
2017	41.5 C (106.7 F)
2018	42.3 C (108.1 F)
2019	39.1 C (102.4 F)
2020	41.1 C (106.0 F)
2021	39.4 C (102.9 F)
2022	43.1 C (109.6 F)
2023	40.0 C (104.0 F)
2024	42.4 C (108.3 F)
2025	36.8 C (98.2 F)
2026	38.8 C (101.8 F)

Coldest night (TNn)

The coldest night of the year at Riversdale, 1877 to 2026. The record is -0.4 C (31.3 F) in 2016, marked on the chart; the median year is 2.8 C (37.0 F).

Coldest night (TNn) at Riversdale by year
Year	Coldest night (TNn)
1877	n/a
1878	n/a
1879	n/a
1880	n/a
1881	n/a
1882	n/a
1883	n/a
1884	n/a
1885	n/a
1886	n/a
1887	n/a
1888	n/a
1889	n/a
1890	n/a
1891	n/a
1892	n/a
1893	n/a
1894	n/a
1895	n/a
1896	n/a
1897	n/a
1898	n/a
1899	n/a
1900	n/a
1901	n/a
1902	n/a
1903	n/a
1904	n/a
1905	n/a
1906	n/a
1907	n/a
1908	n/a
1909	n/a
1910	n/a
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	5.0 C (41.0 F)
1981	1.0 C (33.8 F)
1982	1.5 C (34.7 F)
1983	5.5 C (41.9 F)
1984	0.0 C (32.0 F)
1985	7.1 C (44.8 F)
1986	5.0 C (41.0 F)
1987	6.0 C (42.8 F)
1988	5.9 C (42.6 F)
1989	1.0 C (33.8 F)
1990	5.9 C (42.6 F)
1992	4.8 C (40.6 F)
1993	7.8 C (46.0 F)
1994	6.8 C (44.2 F)
1995	6.7 C (44.1 F)
1996	7.4 C (45.3 F)
1997	14.4 C (57.9 F)
1998	4.7 C (40.5 F)
1999	4.6 C (40.3 F)
2000	13.0 C (55.4 F)
2001	6.1 C (43.0 F)
2002	10.9 C (51.6 F)
2003	0.2 C (32.4 F)
2004	2.4 C (36.3 F)
2005	3.5 C (38.3 F)
2006	n/a
2007	2.7 C (36.9 F)
2008	0.8 C (33.4 F)
2009	2.1 C (35.8 F)
2010	2.1 C (35.8 F)
2011	3.1 C (37.6 F)
2012	2.1 C (35.8 F)
2013	2.8 C (37.0 F)
2014	0.0 C (32.0 F)
2015	0.3 C (32.5 F)
2016	-0.4 C (31.3 F)
2017	0.5 C (32.9 F)
2018	0.7 C (33.3 F)
2019	1.1 C (34.0 F)
2020	1.4 C (34.5 F)
2021	0.4 C (32.7 F)
2022	0.2 C (32.4 F)
2023	0.1 C (32.2 F)
2024	0.1 C (32.2 F)
2025	3.4 C (38.1 F)
2026	3.8 C (38.8 F)

Wettest day (Rx1day)

The wettest day of the year at Riversdale, 1877 to 2026. The record is 180.5 mm (7.1 in) in 1962, marked on the chart; the median year is 35.6 mm (1.4 in).

Wettest day (Rx1day) at Riversdale by year
Year	Wettest day (Rx1day)
1877	13.2 mm (0.5 in)
1878	25.9 mm (1.0 in)
1879	25.4 mm (1.0 in)
1880	41.9 mm (1.6 in)
1881	40.6 mm (1.6 in)
1882	20.3 mm (0.8 in)
1883	22.1 mm (0.9 in)
1884	36.3 mm (1.4 in)
1885	66.0 mm (2.6 in)
1886	60.2 mm (2.4 in)
1887	113.8 mm (4.5 in)
1888	48.0 mm (1.9 in)
1889	39.1 mm (1.5 in)
1890	38.9 mm (1.5 in)
1891	53.1 mm (2.1 in)
1892	66.3 mm (2.6 in)
1893	47.2 mm (1.9 in)
1894	49.5 mm (1.9 in)
1895	20.6 mm (0.8 in)
1896	47.5 mm (1.9 in)
1897	24.1 mm (0.9 in)
1898	30.5 mm (1.2 in)
1899	35.6 mm (1.4 in)
1900	77.5 mm (3.1 in)
1901	38.6 mm (1.5 in)
1902	76.2 mm (3.0 in)
1903	64.3 mm (2.5 in)
1904	60.7 mm (2.4 in)
1905	78.7 mm (3.1 in)
1906	104.1 mm (4.1 in)
1907	20.3 mm (0.8 in)
1908	95.3 mm (3.8 in)
1909	50.8 mm (2.0 in)
1910	30.5 mm (1.2 in)
1911	48.3 mm (1.9 in)
1912	38.9 mm (1.5 in)
1913	38.4 mm (1.5 in)
1914	55.4 mm (2.2 in)
1915	16.3 mm (0.6 in)
1918	13.5 mm (0.5 in)
1919	49.5 mm (1.9 in)
1920	28.7 mm (1.1 in)
1921	35.6 mm (1.4 in)
1922	60.5 mm (2.4 in)
1923	47.5 mm (1.9 in)
1924	27.9 mm (1.1 in)
1925	36.8 mm (1.4 in)
1926	35.6 mm (1.4 in)
1927	19.1 mm (0.8 in)
1928	135.9 mm (5.4 in)
1929	33.0 mm (1.3 in)
1930	44.5 mm (1.8 in)
1931	45.7 mm (1.8 in)
1932	47.0 mm (1.9 in)
1933	43.2 mm (1.7 in)
1934	127.0 mm (5.0 in)
1935	30.5 mm (1.2 in)
1936	7.9 mm (0.31 in)
1959	78.5 mm (3.1 in)
1960	26.5 mm (1.0 in)
1961	32.0 mm (1.3 in)
1962	180.5 mm (7.1 in)
1963	62.5 mm (2.5 in)
1964	31.0 mm (1.2 in)
1965	37.5 mm (1.5 in)
1966	53.5 mm (2.1 in)
1967	78.0 mm (3.1 in)
1968	29.7 mm (1.2 in)
1969	32.5 mm (1.3 in)
1970	33.0 mm (1.3 in)
1971	55.0 mm (2.2 in)
1972	27.0 mm (1.1 in)
1973	32.0 mm (1.3 in)
1974	39.5 mm (1.6 in)
1975	26.9 mm (1.1 in)
1976	26.9 mm (1.1 in)
1977	56.0 mm (2.2 in)
1978	24.8 mm (1.0 in)
1979	34.2 mm (1.3 in)
1980	50.6 mm (2.0 in)
1981	107.6 mm (4.2 in)
1982	33.0 mm (1.3 in)
1983	0.3 mm (0.01 in)
1984	1.3 mm (0.05 in)
1985	1.5 mm (0.06 in)
1986	n/a
1987	3.6 mm (0.14 in)
1988	14.2 mm (0.6 in)
1989	20.3 mm (0.8 in)
1990	0.0 mm (0.00 in)
1992	15.2 mm (0.6 in)
1993	1.3 mm (0.05 in)
1994	1.0 mm (0.04 in)
1995	1.0 mm (0.04 in)
1996	3.0 mm (0.12 in)
1997	1.3 mm (0.05 in)
1998	3.3 mm (0.13 in)
1999	3.3 mm (0.13 in)
2000	n/a
2001	2.0 mm (0.08 in)
2002	15.2 mm (0.6 in)
2003	3.0 mm (0.12 in)
2004	3.3 mm (0.13 in)
2005	0.8 mm (0.03 in)
2006	n/a
2007	41.9 mm (1.6 in)
2008	44.2 mm (1.7 in)
2009	20.6 mm (0.8 in)
2010	29.7 mm (1.2 in)
2011	29.5 mm (1.2 in)
2012	38.9 mm (1.5 in)
2013	81.0 mm (3.2 in)
2014	80.0 mm (3.1 in)
2015	36.1 mm (1.4 in)
2016	25.9 mm (1.0 in)
2017	52.1 mm (2.1 in)
2018	21.1 mm (0.8 in)
2019	47.0 mm (1.9 in)
2020	30.0 mm (1.2 in)
2021	26.9 mm (1.1 in)
2022	30.0 mm (1.2 in)
2023	55.9 mm (2.2 in)
2024	37.1 mm (1.5 in)
2025	n/a
2026	36.0 mm (1.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Riversdale, 1877 to 2026. The record is 181.0 mm (7.1 in) in 1962, marked on the chart; the median year is 60.4 mm (2.4 in).

Wettest five days (Rx5day) at Riversdale by year
Year	Wettest five days (Rx5day)
1877	14.0 mm (0.6 in)
1878	44.7 mm (1.8 in)
1879	42.9 mm (1.7 in)
1880	76.5 mm (3.0 in)
1881	57.3 mm (2.3 in)
1882	36.3 mm (1.4 in)
1883	31.5 mm (1.2 in)
1884	60.4 mm (2.4 in)
1885	114.7 mm (4.5 in)
1886	63.5 mm (2.5 in)
1887	140.7 mm (5.5 in)
1888	67.3 mm (2.6 in)
1889	108.7 mm (4.3 in)
1890	77.3 mm (3.0 in)
1891	80.3 mm (3.2 in)
1892	101.1 mm (4.0 in)
1893	60.4 mm (2.4 in)
1894	58.9 mm (2.3 in)
1895	33.6 mm (1.3 in)
1896	51.1 mm (2.0 in)
1897	37.0 mm (1.5 in)
1898	44.4 mm (1.7 in)
1899	45.5 mm (1.8 in)
1900	112.1 mm (4.4 in)
1901	73.4 mm (2.9 in)
1902	151.6 mm (6.0 in)
1903	123.8 mm (4.9 in)
1904	81.5 mm (3.2 in)
1905	133.3 mm (5.2 in)
1906	163.8 mm (6.4 in)
1907	44.5 mm (1.8 in)
1908	152.5 mm (6.0 in)
1909	87.7 mm (3.5 in)
1910	64.8 mm (2.6 in)
1911	74.9 mm (2.9 in)
1912	66.5 mm (2.6 in)
1913	57.6 mm (2.3 in)
1914	60.0 mm (2.4 in)
1915	30.4 mm (1.2 in)
1918	19.6 mm (0.8 in)
1919	73.1 mm (2.9 in)
1920	38.1 mm (1.5 in)
1921	64.5 mm (2.5 in)
1922	68.6 mm (2.7 in)
1923	58.7 mm (2.3 in)
1924	45.7 mm (1.8 in)
1925	44.4 mm (1.7 in)
1926	62.0 mm (2.4 in)
1927	28.7 mm (1.1 in)
1928	162.9 mm (6.4 in)
1929	50.6 mm (2.0 in)
1930	54.7 mm (2.2 in)
1931	88.9 mm (3.5 in)
1932	128.3 mm (5.1 in)
1933	74.9 mm (2.9 in)
1934	146.1 mm (5.8 in)
1935	43.9 mm (1.7 in)
1936	11.2 mm (0.4 in)
1959	100.5 mm (4.0 in)
1960	47.3 mm (1.9 in)
1961	35.5 mm (1.4 in)
1962	181.0 mm (7.1 in)
1963	72.1 mm (2.8 in)
1964	56.1 mm (2.2 in)
1965	56.0 mm (2.2 in)
1966	59.2 mm (2.3 in)
1967	108.5 mm (4.3 in)
1968	58.9 mm (2.3 in)
1969	45.9 mm (1.8 in)
1970	44.0 mm (1.7 in)
1971	88.5 mm (3.5 in)
1972	48.5 mm (1.9 in)
1973	47.0 mm (1.9 in)
1974	46.7 mm (1.8 in)
1975	44.6 mm (1.8 in)
1976	65.5 mm (2.6 in)
1977	93.1 mm (3.7 in)
1978	31.1 mm (1.2 in)
1979	60.1 mm (2.4 in)
1980	74.2 mm (2.9 in)
1981	131.6 mm (5.2 in)
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	2.1 mm (0.08 in)
2008	105.2 mm (4.1 in)
2009	38.9 mm (1.5 in)
2010	38.1 mm (1.5 in)
2011	54.6 mm (2.1 in)
2012	92.2 mm (3.6 in)
2013	111.0 mm (4.4 in)
2014	166.6 mm (6.6 in)
2015	107.5 mm (4.2 in)
2016	38.6 mm (1.5 in)
2017	24.1 mm (0.9 in)
2018	43.7 mm (1.7 in)
2019	64.0 mm (2.5 in)
2020	53.4 mm (2.1 in)
2021	61.5 mm (2.4 in)
2022	4.6 mm (0.18 in)
2023	101.7 mm (4.0 in)
2024	78.6 mm (3.1 in)
2025	n/a
2026	71.6 mm (2.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Riversdale, 1877 to 2026. The record is 184 days in 1915, marked on the chart; the median year is 24 days.

Longest dry spell (CDD) at Riversdale by year
Year	Longest dry spell (CDD)
1877	17 days
1878	17 days
1879	32 days
1880	34 days
1881	27 days
1882	55 days
1883	26 days
1884	33 days
1885	24 days
1886	24 days
1887	26 days
1888	25 days
1889	24 days
1890	22 days
1891	43 days
1892	28 days
1893	28 days
1894	35 days
1895	30 days
1896	22 days
1897	28 days
1898	28 days
1899	56 days
1900	23 days
1901	40 days
1902	27 days
1903	19 days
1904	34 days
1905	28 days
1906	44 days
1907	25 days
1908	57 days
1909	29 days
1910	22 days
1911	26 days
1912	55 days
1913	29 days
1914	75 days
1915	184 days
1918	19 days
1919	25 days
1920	39 days
1921	17 days
1922	24 days
1923	52 days
1924	32 days
1925	26 days
1926	34 days
1927	27 days
1928	31 days
1929	80 days
1930	50 days
1931	33 days
1932	31 days
1933	30 days
1934	49 days
1935	36 days
1936	18 days
1959	24 days
1960	28 days
1961	21 days
1962	35 days
1963	28 days
1964	19 days
1965	29 days
1966	29 days
1967	26 days
1968	42 days
1969	18 days
1970	30 days
1971	19 days
1972	28 days
1973	21 days
1974	32 days
1975	22 days
1976	14 days
1977	17 days
1978	35 days
1979	23 days
1980	24 days
1981	16 days
1982	n/a
1983	1 day
1984	n/a
1985	n/a
1986	n/a
1987	1 day
1988	1 day
1989	1 day
1990	1 day
1992	1 day
1993	1 day
1994	1 day
1995	1 day
1996	1 day
1997	1 day
1998	1 day
1999	n/a
2000	n/a
2001	n/a
2002	1 day
2003	1 day
2004	2 days
2005	1 day
2006	n/a
2007	3 days
2008	3 days
2009	4 days
2010	4 days
2011	4 days
2012	3 days
2013	5 days
2014	3 days
2015	4 days
2016	5 days
2017	4 days
2018	3 days
2019	5 days
2020	4 days
2021	5 days
2022	4 days
2023	5 days
2024	3 days
2025	n/a
2026	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.

Rainfall Return Levels

72 years, 1878 to 1980

A day with at least 41.0 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 170.6 mm (6.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Riversdale: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	41.0 mm (1.6 in)
5 years	63.2 mm (2.5 in)
10 years	81.9 mm (3.2 in)
25 years	111.3 mm (4.4 in)
50 years	138.4 mm (5.4 in)
100 years	170.6 mm (6.7 in)	Longer than the 72 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, 72 years of values from 1878 to 1980.

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: 180.5 mm (7.1 in) in 1962; 135.9 mm (5.4 in) in 1928; 127.0 mm (5.0 in) in 1934.

Download the Data

Data for Riversdale standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Riversdale 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-13. Last revised 13 October 2026 (2026-10-13).