Onslow Weather Records (ASN00005016)

Record envelope, standing records and threshold days for Onslow (ASN00005016), Australia, with 127 years of record.

Key Facts for Onslow

Onslow (ASN00005016) is a weather station in Australia at -21.64 latitude and 115.11 longitude, 4 m (13 ft) above sea level.
The station reports from 1886 to 2012, 127 years of record.
1,464 records set at Onslow still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Onslow tied a daily record low maximum temperature of 22.0 C (71.6 F) on 6 June 2012.

About the Station

Location: Australia, -21.64 latitude, 115.11 longitude.
Elevation: 4 m (13 ft).
Period of record: 1886 to 2012, 127 years.
Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Onslow. 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 Onslow, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	49.2 C (120.6 F)	16.6 C (61.9 F)	n/a	n/a
Feb	48.3 C (118.9 F)	15.1 C (59.2 F)	n/a	n/a
Mar	46.2 C (115.2 F)	16.9 C (62.4 F)	n/a	n/a
Apr	43.3 C (109.9 F)	10.9 C (51.6 F)	n/a	n/a
May	39.0 C (102.2 F)	8.9 C (48.0 F)	n/a	n/a
Jun	32.7 C (90.9 F)	3.1 C (37.6 F)	n/a	n/a
Jul	32.2 C (90.0 F)	4.6 C (40.3 F)	n/a	n/a
Aug	35.5 C (95.9 F)	5.4 C (41.7 F)	n/a	n/a
Sep	39.0 C (102.2 F)	7.9 C (46.2 F)	n/a	n/a
Oct	44.7 C (112.5 F)	8.9 C (48.0 F)	n/a	n/a
Nov	45.5 C (113.9 F)	12.9 C (55.2 F)	n/a	n/a
Dec	48.7 C (119.7 F)	15.6 C (60.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Onslow still stand. 1980 holds the most, with 50.

Standing records at Onslow by the year they were set
Year set	Standing records
1957	40
1958	31
1959	43
1960	43
1961	49
1962	22
1963	7
1964	37
1965	16
1966	23
1967	17
1968	25
1969	25
1970	27
1971	17
1975	14
1976	32
1977	33
1978	31
1979	43
1980	50
1981	32
1982	21
1983	8
1984	16
1985	27
1986	30
1987	34
1988	15
1989	17
1990	22
1991	29
1992	47
1993	37
1994	19
1995	26
1996	24
1997	15
1998	42
1999	15
2000	21
2001	26
2002	18
2003	36
2004	26
2005	29
2006	31
2007	44
2008	28
2009	24
2010	48
2011	29
2012	3

All-Time Record Progression

4 new records

4 all-time records were set at Onslow between 16 March 1958 and 11 January 2008. Each dot is a new record.

When Onslow set new all-time records
Date	Kind	Detail
1958-03-16	Record daily precipitation	Record daily precipitation 283.0 mm (11.1 in)
1963-02-08	Record daily precipitation	Record daily precipitation 355.6 mm (14.0 in)
1992-02-21	Record high minimum temperature	Record high minimum temperature 31.7 C (89.1 F)
2008-01-11	Record high maximum temperature	Record high maximum temperature 49.2 C (120.6 F)

Wettest Day of Each Month

Feb: 355.6 mm (14.0 in)

The wettest day on record for each calendar month at Onslow. The most was 355.6 mm (14.0 in) on 8 February 1963.

Record daily precipitation for each month at Onslow
Month	Record daily precipitation (mm)	Date
Jan	192.3 mm (7.6 in)	25 January 1971
Feb	355.6 mm (14.0 in)	8 February 1963
Mar	283.0 mm (11.1 in)	16 March 1958
Apr	156.7 mm (6.2 in)	18 April 1937
May	184.3 mm (7.3 in)	28 May 1998
Jun	138.8 mm (5.5 in)	11 June 1992
Jul	75.9 mm (3.0 in)	18 July 1948
Aug	62.2 mm (2.4 in)	24 August 1933
Sep	16.8 mm (0.7 in)	11 September 1970
Oct	21.0 mm (0.8 in)	15 October 1975
Nov	29.7 mm (1.2 in)	10 November 1939
Dec	85.2 mm (3.4 in)	11 December 1995

Period of Record Coverage

1957 to 2012

53 years of record at Onslow, 1957 to 2012. 8 years have data for under 90 percent of days and are left out of rankings: 1963, 1965, 1968, 1969, 1971, 1975, 1988, 2012.

Days with data per year at Onslow
Year	Days with data	Share of year	Complete
1957	365	100%	Yes
1958	365	100%	Yes
1959	357	98%	Yes
1960	351	96%	Yes
1961	352	96%	Yes
1962	365	100%	Yes
1963	194	53%	No
1964	362	99%	Yes
1965	260	71%	No
1966	347	95%	Yes
1967	336	92%	Yes
1968	322	88%	No
1969	312	85%	No
1970	357	98%	Yes
1971	257	70%	No
1975	306	84%	No
1976	366	100%	Yes
1977	364	100%	Yes
1978	365	100%	Yes
1979	360	99%	Yes
1980	364	99%	Yes
1981	365	100%	Yes
1982	359	98%	Yes
1983	361	99%	Yes
1984	334	91%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	365	100%	Yes
1988	291	80%	No
1989	358	98%	Yes
1990	339	93%	Yes
1991	362	99%	Yes
1992	366	100%	Yes
1993	365	100%	Yes
1994	365	100%	Yes
1995	364	100%	Yes
1996	366	100%	Yes
1997	365	100%	Yes
1998	365	100%	Yes
1999	365	100%	Yes
2000	363	99%	Yes
2001	363	99%	Yes
2002	364	100%	Yes
2003	365	100%	Yes
2004	358	98%	Yes
2005	347	95%	Yes
2006	352	96%	Yes
2007	351	96%	Yes
2008	330	90%	Yes
2009	353	97%	Yes
2010	363	99%	Yes
2011	345	95%	Yes
2012	172	47%	No

Latest Records

Latest records at Onslow
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
6 June 2012	Onslow, AU	daily low max (Tie)	22.0 C (71.6 F)	tie	21 years	2 of 100 (Routine)
6 May 2012	Onslow, AU	daily high min	25.0 C (77.0 F)	1.7 C (3.1 F)	14 years	14 of 100 (Routine)
31 March 2012	Onslow, AU	daily high min (Tie)	26.9 C (80.4 F)	tie	1 year	1 of 100 (Routine)
18 March 2012	Onslow, AU	daily low max	30.7 C (87.3 F)	0.1 C (0.2 F)	52 years	20 of 100 (Routine)
13 March 2012	Onslow, AU	daily high min (Tie)	28.1 C (82.6 F)	tie	7 years	1 of 100 (Routine)
30 January 2012	Onslow, AU	daily rain	21.8 mm (0.9 in)	6.1 mm (0.24 in)	93 years	20 of 100 (Routine)
26 January 2012	Onslow, AU	daily high min	27.9 C (82.2 F)	0.1 C (0.2 F)	0 years	5 of 100 (Routine)
22 December 2011	Onslow, AU	monthly high max	48.7 C (119.7 F)	1.3 C (2.3 F)	0 years	18 of 100 (Routine)
22 December 2011	Onslow, AU	daily high min	27.9 C (82.2 F)	0.4 C (0.7 F)	12 years	9 of 100 (Routine)
21 December 2011	Onslow, AU	monthly high max	47.4 C (117.3 F)	0.1 C (0.2 F)	30 years	24 of 100 (Routine)
13 December 2011	Onslow, AU	daily high min	27.1 C (80.8 F)	1.0 C (1.8 F)	20 years	15 of 100 (Routine)
13 November 2011	Onslow, AU	daily high max	40.7 C (105.3 F)	0.7 C (1.3 F)	52 years	21 of 100 (Routine)
28 August 2011	Onslow, AU	monthly high max	35.5 C (95.9 F)	1.5 C (2.7 F)	28 years	29 of 100 (Routine)
22 August 2011	Onslow, AU	daily high max	32.8 C (91.0 F)	0.8 C (1.4 F)	28 years	16 of 100 (Routine)
15 August 2011	Onslow, AU	daily high min	19.9 C (67.8 F)	0.1 C (0.2 F)	9 years	7 of 100 (Routine)
14 August 2011	Onslow, AU	monthly high min	21.8 C (71.2 F)	1.5 C (2.7 F)	19 years	25 of 100 (Routine)
4 August 2011	Onslow, AU	daily high max	30.2 C (86.4 F)	0.1 C (0.2 F)	4 years	6 of 100 (Routine)
30 June 2011	Onslow, AU	daily high min	21.1 C (70.0 F)	3.5 C (6.3 F)	1 year	16 of 100 (Routine)
7 June 2011	Onslow, AU	daily rain	70.4 mm (2.8 in)	8.9 mm (0.35 in)	46 years	29 of 100 (Routine)
6 June 2011	Onslow, AU	daily high min	22.1 C (71.8 F)	0.3 C (0.5 F)	20 years	11 of 100 (Routine)

Climate Trend

38 complete years, 1957 to 2011

One stripe for each of 38 complete years at Onslow, 1957 to 2011. Blue stripes are years cooler than the station's own mean of 25.1 C (77.2 F); red stripes are warmer. The coolest year was 1960, at 24.1 C (75.4 F), and the warmest was 2010, at 26.1 C (79.0 F). The strongest colour marks a difference of 1.1 C (2.0 F).

Annual mean temperature at Onslow as warming stripes, 1957 to 2011
Year	Annual mean temperature	Difference from the station mean
1957	25.0 C	-0.11 C
1958	24.9 C	-0.24 C
1959	25.2 C	+0.07 C
1960	24.1 C	-1.02 C
1961	24.4 C	-0.67 C
1962	24.7 C	-0.40 C
1964	24.5 C	-0.63 C
1966	24.2 C	-0.89 C
1967	24.8 C	-0.31 C
1969	24.9 C	-0.26 C
1970	24.8 C	-0.31 C
1976	24.8 C	-0.36 C
1977	25.0 C	-0.11 C
1978	25.0 C	-0.11 C
1980	25.9 C	+0.82 C
1981	25.5 C	+0.34 C
1982	25.7 C	+0.54 C
1983	25.8 C	+0.73 C
1985	25.2 C	+0.07 C
1986	24.4 C	-0.75 C
1991	25.3 C	+0.18 C
1992	24.2 C	-0.90 C
1993	24.4 C	-0.68 C
1994	25.4 C	+0.33 C
1995	24.6 C	-0.55 C
1996	25.7 C	+0.55 C
1997	24.9 C	-0.17 C
1998	25.7 C	+0.60 C
1999	25.4 C	+0.28 C
2000	25.1 C	-0.01 C
2001	24.8 C	-0.33 C
2002	25.3 C	+0.15 C
2003	25.3 C	+0.20 C
2007	26.0 C	+0.91 C
2008	25.7 C	+0.61 C
2009	25.6 C	+0.51 C
2010	26.1 C	+1.01 C
2011	26.0 C	+0.85 C

The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1957 to 2011. In Fahrenheit: 0.3 F (0.2 to 0.5) per decade. The slope is a straight line fitted to 38 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Onslow
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.2 C (0.1 to 0.3) per decade	0.3 F (0.2 to 0.5) per decade	1957 to 2011	38	Rise
Mean daily maximum	0.02 C (-0.10 to 0.14) per decade	0.04 F (-0.18 to 0.25) per decade	1957 to 2011	38	Not clearly different from zero
Mean daily minimum	0.3 C (0.3 to 0.4) per decade	0.6 F (0.5 to 0.8) per decade	1957 to 2011	38	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

1886 to 2012

Yearly extremes at Onslow: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	49.2 C (120.6 F)	2008	45.9 C (114.6 F)	53
Coldest night (TNn)	3.1 C (37.6 F)	1958	7.9 C (46.2 F)	53
Wettest day (Rx1day)	355.6 mm (14.0 in)	1963	52.3 mm (2.1 in)	124
Wettest five days (Rx5day)	451.0 mm (17.8 in)	1995	75.5 mm (3.0 in)	124
Longest dry spell (CDD)	257 days	1936	122 days	124

Hottest day (TXx)

The hottest day of the year at Onslow, 1886 to 2012. The record is 49.2 C (120.6 F) in 2008, marked on the chart; the median year is 45.9 C (114.6 F).

Hottest day (TXx) at Onslow by year
Year	Hottest day (TXx)
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
1916	n/a
1917	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
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	43.9 C (111.0 F)
1958	46.7 C (116.1 F)
1959	48.3 C (118.9 F)
1960	45.7 C (114.3 F)
1961	45.1 C (113.2 F)
1962	45.9 C (114.6 F)
1963	46.2 C (115.2 F)
1964	43.9 C (111.0 F)
1965	45.8 C (114.4 F)
1966	46.4 C (115.5 F)
1967	44.4 C (111.9 F)
1968	46.9 C (116.4 F)
1969	45.2 C (113.4 F)
1970	47.2 C (117.0 F)
1971	47.2 C (117.0 F)
1975	43.6 C (110.5 F)
1976	43.8 C (110.8 F)
1977	45.9 C (114.6 F)
1978	45.4 C (113.7 F)
1979	46.3 C (115.3 F)
1980	47.3 C (117.1 F)
1981	45.2 C (113.4 F)
1982	45.6 C (114.1 F)
1983	45.9 C (114.6 F)
1984	44.6 C (112.3 F)
1985	45.7 C (114.3 F)
1986	46.2 C (115.2 F)
1987	46.8 C (116.2 F)
1988	46.6 C (115.9 F)
1989	44.3 C (111.7 F)
1990	44.7 C (112.5 F)
1991	46.7 C (116.1 F)
1992	46.8 C (116.2 F)
1993	46.2 C (115.2 F)
1994	44.6 C (112.3 F)
1995	44.3 C (111.7 F)
1996	46.5 C (115.7 F)
1997	45.1 C (113.2 F)
1998	48.0 C (118.4 F)
1999	46.1 C (115.0 F)
2000	44.4 C (111.9 F)
2001	43.2 C (109.8 F)
2002	44.4 C (111.9 F)
2003	48.0 C (118.4 F)
2004	44.3 C (111.7 F)
2005	47.1 C (116.8 F)
2006	47.7 C (117.9 F)
2007	45.5 C (113.9 F)
2008	49.2 C (120.6 F)
2009	46.7 C (116.1 F)
2010	49.2 C (120.6 F)
2011	48.7 C (119.7 F)
2012	45.2 C (113.4 F)

Coldest night (TNn)

The coldest night of the year at Onslow, 1886 to 2012. The record is 3.1 C (37.6 F) in 1958, marked on the chart; the median year is 7.9 C (46.2 F).

Coldest night (TNn) at Onslow by year
Year	Coldest night (TNn)
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
1916	n/a
1917	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
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	5.4 C (41.7 F)
1958	3.1 C (37.6 F)
1959	7.8 C (46.0 F)
1960	5.6 C (42.1 F)
1961	4.6 C (40.3 F)
1962	6.2 C (43.2 F)
1963	10.2 C (50.4 F)
1964	7.1 C (44.8 F)
1965	7.6 C (45.7 F)
1966	6.4 C (43.5 F)
1967	5.1 C (41.2 F)
1968	5.4 C (41.7 F)
1969	7.9 C (46.2 F)
1970	8.3 C (46.9 F)
1971	7.8 C (46.0 F)
1975	8.1 C (46.6 F)
1976	7.5 C (45.5 F)
1977	7.2 C (45.0 F)
1978	6.4 C (43.5 F)
1979	6.5 C (43.7 F)
1980	8.8 C (47.8 F)
1981	6.0 C (42.8 F)
1982	7.5 C (45.5 F)
1983	8.0 C (46.4 F)
1984	9.1 C (48.4 F)
1985	7.5 C (45.5 F)
1986	5.5 C (41.9 F)
1987	9.5 C (49.1 F)
1988	10.5 C (50.9 F)
1989	9.0 C (48.2 F)
1990	8.7 C (47.7 F)
1991	9.0 C (48.2 F)
1992	7.6 C (45.7 F)
1993	7.6 C (45.7 F)
1994	7.2 C (45.0 F)
1995	9.3 C (48.7 F)
1996	9.0 C (48.2 F)
1997	6.2 C (43.2 F)
1998	7.3 C (45.1 F)
1999	9.2 C (48.6 F)
2000	9.0 C (48.2 F)
2001	8.8 C (47.8 F)
2002	9.0 C (48.2 F)
2003	7.8 C (46.0 F)
2004	8.6 C (47.5 F)
2005	8.9 C (48.0 F)
2006	9.0 C (48.2 F)
2007	10.0 C (50.0 F)
2008	9.4 C (48.9 F)
2009	9.6 C (49.3 F)
2010	10.6 C (51.1 F)
2011	11.1 C (52.0 F)
2012	7.9 C (46.2 F)

Wettest day (Rx1day)

The wettest day of the year at Onslow, 1886 to 2012. The record is 355.6 mm (14.0 in) in 1963, marked on the chart; the median year is 52.3 mm (2.1 in).

Wettest day (Rx1day) at Onslow by year
Year	Wettest day (Rx1day)
1886	0.0 mm (0.00 in)
1887	0.0 mm (0.00 in)
1888	0.0 mm (0.00 in)
1889	0.0 mm (0.00 in)
1890	0.0 mm (0.00 in)
1891	0.0 mm (0.00 in)
1892	0.0 mm (0.00 in)
1893	0.0 mm (0.00 in)
1894	0.0 mm (0.00 in)
1895	0.0 mm (0.00 in)
1896	0.0 mm (0.00 in)
1897	0.0 mm (0.00 in)
1898	0.0 mm (0.00 in)
1899	0.0 mm (0.00 in)
1900	0.0 mm (0.00 in)
1901	0.0 mm (0.00 in)
1902	0.0 mm (0.00 in)
1903	0.0 mm (0.00 in)
1904	0.0 mm (0.00 in)
1905	0.0 mm (0.00 in)
1906	0.0 mm (0.00 in)
1907	57.2 mm (2.3 in)
1908	48.0 mm (1.9 in)
1909	137.2 mm (5.4 in)
1910	29.2 mm (1.1 in)
1911	38.1 mm (1.5 in)
1912	4.3 mm (0.17 in)
1913	35.8 mm (1.4 in)
1914	11.9 mm (0.5 in)
1915	80.0 mm (3.1 in)
1916	104.9 mm (4.1 in)
1917	63.2 mm (2.5 in)
1918	70.9 mm (2.8 in)
1919	9.7 mm (0.38 in)
1920	54.6 mm (2.1 in)
1921	115.8 mm (4.6 in)
1922	27.2 mm (1.1 in)
1923	190.5 mm (7.5 in)
1924	13.2 mm (0.5 in)
1925	110.7 mm (4.4 in)
1926	48.3 mm (1.9 in)
1927	62.2 mm (2.4 in)
1928	22.9 mm (0.9 in)
1929	87.4 mm (3.4 in)
1930	102.1 mm (4.0 in)
1931	52.3 mm (2.1 in)
1932	24.9 mm (1.0 in)
1933	70.4 mm (2.8 in)
1934	188.0 mm (7.4 in)
1935	14.0 mm (0.6 in)
1936	41.9 mm (1.6 in)
1937	156.7 mm (6.2 in)
1938	17.8 mm (0.7 in)
1939	148.1 mm (5.8 in)
1940	12.7 mm (0.5 in)
1941	45.7 mm (1.8 in)
1942	158.2 mm (6.2 in)
1943	73.2 mm (2.9 in)
1944	11.2 mm (0.4 in)
1945	146.3 mm (5.8 in)
1946	97.3 mm (3.8 in)
1947	105.7 mm (4.2 in)
1948	147.6 mm (5.8 in)
1949	66.0 mm (2.6 in)
1950	51.3 mm (2.0 in)
1951	89.9 mm (3.5 in)
1952	140.5 mm (5.5 in)
1953	173.0 mm (6.8 in)
1954	30.0 mm (1.2 in)
1955	42.2 mm (1.7 in)
1956	88.9 mm (3.5 in)
1957	41.7 mm (1.6 in)
1958	283.0 mm (11.1 in)
1959	25.7 mm (1.0 in)
1960	47.2 mm (1.9 in)
1961	274.1 mm (10.8 in)
1962	18.8 mm (0.7 in)
1963	355.6 mm (14.0 in)
1964	143.8 mm (5.7 in)
1965	132.8 mm (5.2 in)
1966	15.5 mm (0.6 in)
1967	67.6 mm (2.7 in)
1968	0.0 mm (0.00 in)
1969	64.0 mm (2.5 in)
1970	78.7 mm (3.1 in)
1971	192.3 mm (7.6 in)
1975	21.0 mm (0.8 in)
1976	42.6 mm (1.7 in)
1977	104.8 mm (4.1 in)
1978	35.8 mm (1.4 in)
1979	41.2 mm (1.6 in)
1980	76.3 mm (3.0 in)
1981	52.8 mm (2.1 in)
1982	36.0 mm (1.4 in)
1983	33.0 mm (1.3 in)
1984	123.8 mm (4.9 in)
1985	14.6 mm (0.6 in)
1986	98.8 mm (3.9 in)
1987	33.6 mm (1.3 in)
1988	77.7 mm (3.1 in)
1989	71.0 mm (2.8 in)
1990	70.1 mm (2.8 in)
1991	79.2 mm (3.1 in)
1992	138.8 mm (5.5 in)
1993	167.2 mm (6.6 in)
1994	185.6 mm (7.3 in)
1995	304.2 mm (12.0 in)
1996	83.9 mm (3.3 in)
1997	45.2 mm (1.8 in)
1998	184.3 mm (7.3 in)
1999	90.0 mm (3.5 in)
2000	68.2 mm (2.7 in)
2001	58.0 mm (2.3 in)
2002	59.2 mm (2.3 in)
2003	79.2 mm (3.1 in)
2004	52.2 mm (2.1 in)
2005	70.6 mm (2.8 in)
2006	153.6 mm (6.0 in)
2007	32.3 mm (1.3 in)
2008	28.0 mm (1.1 in)
2009	174.0 mm (6.9 in)
2010	13.2 mm (0.5 in)
2011	106.6 mm (4.2 in)
2012	25.2 mm (1.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Onslow, 1886 to 2012. The record is 451.0 mm (17.8 in) in 1995, marked on the chart; the median year is 75.5 mm (3.0 in).

Wettest five days (Rx5day) at Onslow by year
Year	Wettest five days (Rx5day)
1886	0.0 mm (0.00 in)
1887	0.0 mm (0.00 in)
1888	0.0 mm (0.00 in)
1889	0.0 mm (0.00 in)
1890	0.0 mm (0.00 in)
1891	0.0 mm (0.00 in)
1892	0.0 mm (0.00 in)
1893	0.0 mm (0.00 in)
1894	0.0 mm (0.00 in)
1895	0.0 mm (0.00 in)
1896	0.0 mm (0.00 in)
1897	0.0 mm (0.00 in)
1898	0.0 mm (0.00 in)
1899	0.0 mm (0.00 in)
1900	0.0 mm (0.00 in)
1901	0.0 mm (0.00 in)
1902	0.0 mm (0.00 in)
1903	0.0 mm (0.00 in)
1904	0.0 mm (0.00 in)
1905	0.0 mm (0.00 in)
1906	0.0 mm (0.00 in)
1907	118.6 mm (4.7 in)
1908	49.0 mm (1.9 in)
1909	215.4 mm (8.5 in)
1910	40.9 mm (1.6 in)
1911	43.2 mm (1.7 in)
1912	4.6 mm (0.18 in)
1913	39.9 mm (1.6 in)
1914	16.6 mm (0.7 in)
1915	95.6 mm (3.8 in)
1916	114.8 mm (4.5 in)
1917	142.7 mm (5.6 in)
1918	152.2 mm (6.0 in)
1919	14.3 mm (0.6 in)
1920	55.9 mm (2.2 in)
1921	273.7 mm (10.8 in)
1922	27.2 mm (1.1 in)
1923	314.7 mm (12.4 in)
1924	31.0 mm (1.2 in)
1925	149.5 mm (5.9 in)
1926	99.6 mm (3.9 in)
1927	122.7 mm (4.8 in)
1928	33.1 mm (1.3 in)
1929	113.3 mm (4.5 in)
1930	138.5 mm (5.5 in)
1931	78.0 mm (3.1 in)
1932	24.9 mm (1.0 in)
1933	153.8 mm (6.1 in)
1934	265.7 mm (10.5 in)
1935	15.7 mm (0.6 in)
1936	42.5 mm (1.7 in)
1937	173.5 mm (6.8 in)
1938	35.1 mm (1.4 in)
1939	167.7 mm (6.6 in)
1940	21.1 mm (0.8 in)
1941	54.9 mm (2.2 in)
1942	253.4 mm (10.0 in)
1943	123.0 mm (4.8 in)
1944	11.2 mm (0.4 in)
1945	150.4 mm (5.9 in)
1946	107.9 mm (4.2 in)
1947	154.8 mm (6.1 in)
1948	183.7 mm (7.2 in)
1949	128.0 mm (5.0 in)
1950	66.3 mm (2.6 in)
1951	170.7 mm (6.7 in)
1952	152.4 mm (6.0 in)
1953	173.8 mm (6.8 in)
1954	43.5 mm (1.7 in)
1955	74.2 mm (2.9 in)
1956	141.9 mm (5.6 in)
1957	94.0 mm (3.7 in)
1958	305.9 mm (12.0 in)
1959	39.2 mm (1.5 in)
1960	57.4 mm (2.3 in)
1961	380.0 mm (15.0 in)
1962	39.8 mm (1.6 in)
1963	441.5 mm (17.4 in)
1964	171.0 mm (6.7 in)
1965	143.2 mm (5.6 in)
1966	21.6 mm (0.9 in)
1967	68.4 mm (2.7 in)
1968	0.0 mm (0.00 in)
1969	88.7 mm (3.5 in)
1970	196.3 mm (7.7 in)
1971	246.1 mm (9.7 in)
1975	21.6 mm (0.9 in)
1976	81.4 mm (3.2 in)
1977	108.0 mm (4.3 in)
1978	45.6 mm (1.8 in)
1979	51.8 mm (2.0 in)
1980	133.0 mm (5.2 in)
1981	56.6 mm (2.2 in)
1982	76.4 mm (3.0 in)
1983	33.0 mm (1.3 in)
1984	185.0 mm (7.3 in)
1985	25.6 mm (1.0 in)
1986	168.6 mm (6.6 in)
1987	55.2 mm (2.2 in)
1988	81.1 mm (3.2 in)
1989	74.6 mm (2.9 in)
1990	89.9 mm (3.5 in)
1991	97.8 mm (3.9 in)
1992	178.2 mm (7.0 in)
1993	215.6 mm (8.5 in)
1994	206.4 mm (8.1 in)
1995	451.0 mm (17.8 in)
1996	86.0 mm (3.4 in)
1997	56.8 mm (2.2 in)
1998	310.5 mm (12.2 in)
1999	129.2 mm (5.1 in)
2000	136.8 mm (5.4 in)
2001	161.3 mm (6.4 in)
2002	67.5 mm (2.7 in)
2003	119.0 mm (4.7 in)
2004	77.0 mm (3.0 in)
2005	115.6 mm (4.6 in)
2006	169.9 mm (6.7 in)
2007	32.4 mm (1.3 in)
2008	35.9 mm (1.4 in)
2009	199.0 mm (7.8 in)
2010	29.8 mm (1.2 in)
2011	168.4 mm (6.6 in)
2012	49.9 mm (2.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Onslow, 1886 to 2012. The record is 257 days in 1936, marked on the chart; the median year is 122 days.

Longest dry spell (CDD) at Onslow by year
Year	Longest dry spell (CDD)
1886	92 days
1887	61 days
1888	91 days
1889	91 days
1890	61 days
1891	184 days
1892	91 days
1893	122 days
1894	31 days
1895	122 days
1896	92 days
1897	92 days
1898	61 days
1899	91 days
1900	92 days
1901	62 days
1902	92 days
1903	92 days
1904	30 days
1905	122 days
1906	61 days
1907	153 days
1908	157 days
1909	79 days
1910	163 days
1911	174 days
1912	162 days
1913	134 days
1914	162 days
1915	166 days
1916	111 days
1917	166 days
1918	149 days
1919	89 days
1920	111 days
1921	125 days
1922	128 days
1923	157 days
1924	159 days
1925	138 days
1926	148 days
1927	81 days
1928	141 days
1929	138 days
1930	133 days
1931	79 days
1932	63 days
1933	126 days
1934	183 days
1935	141 days
1936	257 days
1937	91 days
1938	168 days
1939	88 days
1940	132 days
1941	125 days
1942	66 days
1943	154 days
1944	218 days
1945	151 days
1946	118 days
1947	67 days
1948	166 days
1949	90 days
1950	102 days
1951	155 days
1952	156 days
1953	89 days
1954	132 days
1955	81 days
1956	122 days
1957	124 days
1958	59 days
1959	158 days
1960	111 days
1961	182 days
1962	216 days
1963	182 days
1964	88 days
1965	143 days
1966	89 days
1967	144 days
1968	61 days
1969	200 days
1970	111 days
1971	69 days
1975	79 days
1976	119 days
1977	195 days
1978	136 days
1979	114 days
1980	83 days
1981	126 days
1982	71 days
1983	116 days
1984	84 days
1985	158 days
1986	109 days
1987	154 days
1988	55 days
1989	201 days
1990	145 days
1991	164 days
1992	102 days
1993	82 days
1994	182 days
1995	95 days
1996	147 days
1997	116 days
1998	125 days
1999	105 days
2000	137 days
2001	160 days
2002	189 days
2003	131 days
2004	64 days
2005	101 days
2006	131 days
2007	156 days
2008	65 days
2009	86 days
2010	125 days
2011	171 days
2012	81 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

97 years, 1907 to 2011

A day with at least 66.8 mm (2.6 in) of rain is expected about once in 2 years. A day with at least 328.3 mm (12.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Onslow: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	66.8 mm (2.6 in)
5 years	120.7 mm (4.8 in)
10 years	162.0 mm (6.4 in)
25 years	221.8 mm (8.7 in)
50 years	272.3 mm (10.7 in)
100 years	328.3 mm (12.9 in)	Longer than the 97 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, 97 years of values from 1907 to 2011.

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: 355.6 mm (14.0 in) in 1963; 304.2 mm (12.0 in) in 1995; 283.0 mm (11.1 in) in 1958.

Download the Data

Data for Onslow standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Onslow 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).