Ardlethan Post Office Weather Records (ASN00074000)

Record envelope, standing records and threshold days for Ardlethan Post Office (ASN00074000), Australia, with 118 years of record.

Key Facts for Ardlethan Post Office

Ardlethan Post Office (ASN00074000) is a weather station in Australia at -34.36 latitude and 146.90 longitude, 204 m (669 ft) above sea level.
The station reports from 1909 to 2026, 118 years of record.
1,460 records set at Ardlethan Post Office still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Ardlethan Post Office set a daily record precipitation of 14.8 mm (0.6 in) on 25 August 2026 (provisional).

Provisional Records

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

About the Station

Location: Australia, -34.36 latitude, 146.90 longitude.
Elevation: 204 m (669 ft).
Period of record: 1909 to 2026, 118 years.
Eligible elements: 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 Ardlethan Post Office. 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 Ardlethan Post Office, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	44.4 C (111.9 F)	6.0 C (42.8 F)	n/a	n/a
Feb	44.4 C (111.9 F)	6.7 C (44.1 F)	n/a	n/a
Mar	39.4 C (102.9 F)	3.3 C (37.9 F)	n/a	n/a
Apr	32.2 C (90.0 F)	-0.6 C (30.9 F)	n/a	n/a
May	27.0 C (80.6 F)	-3.3 C (26.1 F)	n/a	n/a
Jun	23.8 C (74.8 F)	-4.4 C (24.1 F)	n/a	n/a
Jul	25.9 C (78.6 F)	-6.1 C (21.0 F)	n/a	n/a
Aug	25.6 C (78.1 F)	-3.9 C (25.0 F)	n/a	n/a
Sep	33.9 C (93.0 F)	-3.3 C (26.1 F)	n/a	n/a
Oct	35.0 C (95.0 F)	-1.7 C (28.9 F)	n/a	n/a
Nov	39.0 C (102.2 F)	2.2 C (36.0 F)	n/a	n/a
Dec	42.4 C (108.3 F)	5.0 C (41.0 F)	n/a	n/a

Which Years Hold Standing Records

1,460 standing records

1,460 records at Ardlethan Post Office still stand. 1965 holds the most, with 196.

Wettest Day of Each Month

Feb: 122.9 mm (4.8 in)

The wettest day on record for each calendar month at Ardlethan Post Office. The most was 122.9 mm (4.8 in) on 17 February 1928.

Record daily precipitation for each month at Ardlethan Post Office
Month	Record daily precipitation (mm)	Date
Jan	99.2 mm (3.9 in)	11 January 1974
Feb	122.9 mm (4.8 in)	17 February 1928
Mar	106.4 mm (4.2 in)	3 March 2012
Apr	50.8 mm (2.0 in)	8 April 1921
May	50.8 mm (2.0 in)	26 May 1925
Jun	58.5 mm (2.3 in)	24 June 2021
Jul	46.0 mm (1.8 in)	27 July 1912
Aug	41.4 mm (1.6 in)	18 August 1925
Sep	60.7 mm (2.4 in)	30 September 1916
Oct	49.0 mm (1.9 in)	17 October 1974
Nov	83.6 mm (3.3 in)	28 November 1911
Dec	75.4 mm (3.0 in)	3 December 1980

Period of Record Coverage

1965 to 1975

11 years of record at Ardlethan Post Office, 1965 to 1975. 11 years have data for under 90 percent of days and are left out of rankings: 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972 and others.

Days with data per year at Ardlethan Post Office
Year	Days with data	Share of year	Complete
1965	308	84%	No
1966	301	82%	No
1967	303	83%	No
1968	302	83%	No
1969	279	76%	No
1970	116	32%	No
1971	317	87%	No
1972	305	83%	No
1973	303	83%	No
1974	260	71%	No
1975	233	64%	No

Latest Records

Latest records at Ardlethan Post Office
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
25 August 2026	Ardlethan Post Office, AU	daily rain (Provisional)	14.8 mm (0.6 in)	1.6 mm (0.06 in)	105 years	20 of 100 (Routine)
10 August 2026	Ardlethan Post Office, AU	daily rain	26.6 mm (1.0 in)	12.4 mm (0.5 in)	64 years	49 of 100 (Notable)
4 May 2026	Ardlethan Post Office, AU	daily rain	16.2 mm (0.6 in)	0.4 mm (0.02 in)	4 years	11 of 100 (Routine)
19 March 2026	Ardlethan Post Office, AU	daily rain	13.4 mm (0.5 in)	2.2 mm (0.09 in)	19 years	16 of 100 (Routine)
14 December 2025	Ardlethan Post Office, AU	daily rain	38.2 mm (1.5 in)	6.2 mm (0.24 in)	32 years	24 of 100 (Routine)
24 May 2025	Ardlethan Post Office, AU	daily rain	29.2 mm (1.1 in)	3.2 mm (0.13 in)	26 years	21 of 100 (Routine)
30 November 2024	Ardlethan Post Office, AU	daily rain	36.4 mm (1.4 in)	13.6 mm (0.5 in)	14 years	28 of 100 (Routine)
3 January 2024	Ardlethan Post Office, AU	daily rain	18.4 mm (0.7 in)	3.4 mm (0.13 in)	82 years	20 of 100 (Routine)
29 November 2023	Ardlethan Post Office, AU	daily rain	24.8 mm (1.0 in)	16.2 mm (0.6 in)	49 years	20 of 100 (Routine)
21 November 2023	Ardlethan Post Office, AU	daily rain	12.6 mm (0.5 in)	1.2 mm (0.05 in)	60 years	20 of 100 (Routine)
22 June 2023	Ardlethan Post Office, AU	daily rain	15.5 mm (0.6 in)	0.3 mm (0.01 in)	112 years	20 of 100 (Routine)
30 January 2023	Ardlethan Post Office, AU	daily rain	20.6 mm (0.8 in)	10.0 mm (0.4 in)	1 year	17 of 100 (Routine)
1 November 2022	Ardlethan Post Office, AU	daily rain	30.1 mm (1.2 in)	12.3 mm (0.5 in)	111 years	52 of 100 (Notable)
22 October 2022	Ardlethan Post Office, AU	daily rain	10.8 mm (0.4 in)	4.8 mm (0.19 in)	19 years	20 of 100 (Routine)
15 October 2022	Ardlethan Post Office, AU	daily rain	22.6 mm (0.9 in)	4.2 mm (0.17 in)	12 years	18 of 100 (Routine)
14 October 2022	Ardlethan Post Office, AU	daily rain	17.8 mm (0.7 in)	1.4 mm (0.06 in)	12 years	14 of 100 (Routine)
12 May 2022	Ardlethan Post Office, AU	daily rain	28.8 mm (1.1 in)	13.6 mm (0.5 in)	92 years	55 of 100 (Notable)
19 April 2022	Ardlethan Post Office, AU	daily rain	29.4 mm (1.2 in)	8.0 mm (0.31 in)	37 years	30 of 100 (Routine)
8 January 2022	Ardlethan Post Office, AU	daily rain	37.2 mm (1.5 in)	14.6 mm (0.6 in)	7 years	22 of 100 (Routine)
7 January 2022	Ardlethan Post Office, AU	daily rain	45.8 mm (1.8 in)	24.2 mm (1.0 in)	87 years	54 of 100 (Notable)

Extremes by Year

1909 to 2026

Yearly extremes at Ardlethan Post Office: 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)	1968	40.6 C (105.1 F)	11
Coldest night (TNn)	-6.1 C (21.0 F)	1965	-3.7 C (25.3 F)	11
Wettest day (Rx1day)	122.9 mm (4.8 in)	1928	41.6 mm (1.6 in)	110
Wettest five days (Rx5day)	184.9 mm (7.3 in)	2012	57.2 mm (2.3 in)	109
Longest dry spell (CDD)	96 days	2025	34 days	109

Hottest day (TXx)

The hottest day of the year at Ardlethan Post Office, 1909 to 2026. The record is 44.4 C (111.9 F) in 1968, marked on the chart; the median year is 40.6 C (105.1 F).

Hottest day (TXx) at Ardlethan Post Office by year
Year	Hottest day (TXx)
1909	n/a
1910	n/a
1911	n/a
1912	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	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1965	41.1 C (106.0 F)
1966	40.6 C (105.1 F)
1967	38.9 C (102.0 F)
1968	44.4 C (111.9 F)
1969	41.1 C (106.0 F)
1970	39.4 C (102.9 F)
1971	39.4 C (102.9 F)
1972	42.4 C (108.3 F)
1973	44.0 C (111.2 F)
1974	37.4 C (99.3 F)
1975	40.0 C (104.0 F)
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
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
1991	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	n/a
2008	n/a
2009	n/a
2010	n/a
2011	n/a
2012	n/a
2013	n/a
2014	n/a
2015	n/a
2016	n/a
2017	n/a
2018	n/a
2019	n/a
2020	n/a
2021	n/a
2022	n/a
2023	n/a
2024	n/a
2025	n/a
2026	n/a

Coldest night (TNn)

The coldest night of the year at Ardlethan Post Office, 1909 to 2026. The record is -6.1 C (21.0 F) in 1965, marked on the chart; the median year is -3.7 C (25.3 F).

Coldest night (TNn) at Ardlethan Post Office by year
Year	Coldest night (TNn)
1909	n/a
1910	n/a
1911	n/a
1912	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	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1965	-6.1 C (21.0 F)
1966	-4.4 C (24.1 F)
1967	-3.9 C (25.0 F)
1968	-3.9 C (25.0 F)
1969	-3.3 C (26.1 F)
1970	-0.9 C (30.4 F)
1971	-4.8 C (23.4 F)
1972	-3.3 C (26.1 F)
1973	-1.0 C (30.2 F)
1974	-3.7 C (25.3 F)
1975	-2.4 C (27.7 F)
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
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
1991	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	n/a
2008	n/a
2009	n/a
2010	n/a
2011	n/a
2012	n/a
2013	n/a
2014	n/a
2015	n/a
2016	n/a
2017	n/a
2018	n/a
2019	n/a
2020	n/a
2021	n/a
2022	n/a
2023	n/a
2024	n/a
2025	n/a
2026	n/a

Wettest day (Rx1day)

The wettest day of the year at Ardlethan Post Office, 1909 to 2026. The record is 122.9 mm (4.8 in) in 1928, marked on the chart; the median year is 41.6 mm (1.6 in).

Wettest day (Rx1day) at Ardlethan Post Office by year
Year	Wettest day (Rx1day)
1909	19.1 mm (0.8 in)
1910	54.6 mm (2.1 in)
1911	83.6 mm (3.3 in)
1912	46.0 mm (1.8 in)
1914	10.2 mm (0.4 in)
1915	18.8 mm (0.7 in)
1916	60.7 mm (2.4 in)
1917	35.6 mm (1.4 in)
1918	37.3 mm (1.5 in)
1919	41.4 mm (1.6 in)
1920	49.8 mm (2.0 in)
1921	50.8 mm (2.0 in)
1922	44.5 mm (1.8 in)
1923	61.0 mm (2.4 in)
1924	41.1 mm (1.6 in)
1925	50.8 mm (2.0 in)
1926	37.3 mm (1.5 in)
1927	25.1 mm (1.0 in)
1928	122.9 mm (4.8 in)
1929	43.2 mm (1.7 in)
1930	53.3 mm (2.1 in)
1931	88.9 mm (3.5 in)
1932	35.1 mm (1.4 in)
1933	75.9 mm (3.0 in)
1934	50.8 mm (2.0 in)
1935	28.2 mm (1.1 in)
1936	26.7 mm (1.1 in)
1937	38.1 mm (1.5 in)
1938	30.7 mm (1.2 in)
1939	62.7 mm (2.5 in)
1940	27.9 mm (1.1 in)
1941	39.1 mm (1.5 in)
1942	41.7 mm (1.6 in)
1943	52.8 mm (2.1 in)
1944	28.4 mm (1.1 in)
1945	26.2 mm (1.0 in)
1946	48.0 mm (1.9 in)
1947	49.0 mm (1.9 in)
1948	59.4 mm (2.3 in)
1949	81.0 mm (3.2 in)
1950	44.2 mm (1.7 in)
1951	24.1 mm (0.9 in)
1952	26.7 mm (1.1 in)
1953	36.3 mm (1.4 in)
1954	66.5 mm (2.6 in)
1955	72.4 mm (2.9 in)
1956	59.2 mm (2.3 in)
1957	27.2 mm (1.1 in)
1958	33.3 mm (1.3 in)
1959	56.4 mm (2.2 in)
1960	38.9 mm (1.5 in)
1961	39.6 mm (1.6 in)
1962	68.8 mm (2.7 in)
1963	42.2 mm (1.7 in)
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	47.5 mm (1.9 in)
1972	54.6 mm (2.1 in)
1973	31.0 mm (1.2 in)
1974	99.2 mm (3.9 in)
1975	66.6 mm (2.6 in)
1976	52.6 mm (2.1 in)
1977	31.2 mm (1.2 in)
1978	59.4 mm (2.3 in)
1979	34.0 mm (1.3 in)
1980	75.4 mm (3.0 in)
1981	56.4 mm (2.2 in)
1982	58.2 mm (2.3 in)
1983	48.8 mm (1.9 in)
1984	82.0 mm (3.2 in)
1985	35.0 mm (1.4 in)
1986	19.0 mm (0.7 in)
1987	30.0 mm (1.2 in)
1988	35.0 mm (1.4 in)
1989	52.4 mm (2.1 in)
1990	27.0 mm (1.1 in)
1991	36.6 mm (1.4 in)
1992	45.6 mm (1.8 in)
1993	32.0 mm (1.3 in)
1994	52.0 mm (2.0 in)
1995	42.0 mm (1.7 in)
1996	35.6 mm (1.4 in)
1997	27.6 mm (1.1 in)
1998	31.0 mm (1.2 in)
1999	28.2 mm (1.1 in)
2000	16.5 mm (0.6 in)
2001	14.0 mm (0.6 in)
2002	17.4 mm (0.7 in)
2003	50.6 mm (2.0 in)
2004	19.2 mm (0.8 in)
2005	30.6 mm (1.2 in)
2006	23.4 mm (0.9 in)
2007	44.2 mm (1.7 in)
2008	39.2 mm (1.5 in)
2009	61.0 mm (2.4 in)
2010	40.2 mm (1.6 in)
2011	47.4 mm (1.9 in)
2012	106.4 mm (4.2 in)
2013	54.0 mm (2.1 in)
2014	36.8 mm (1.4 in)
2015	36.1 mm (1.4 in)
2016	60.0 mm (2.4 in)
2017	65.6 mm (2.6 in)
2018	22.2 mm (0.9 in)
2019	42.5 mm (1.7 in)
2020	36.2 mm (1.4 in)
2021	58.5 mm (2.3 in)
2022	45.8 mm (1.8 in)
2023	24.8 mm (1.0 in)
2024	37.2 mm (1.5 in)
2025	39.4 mm (1.6 in)
2026	26.6 mm (1.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Ardlethan Post Office, 1909 to 2026. The record is 184.9 mm (7.3 in) in 2012, marked on the chart; the median year is 57.2 mm (2.3 in).

Wettest five days (Rx5day) at Ardlethan Post Office by year
Year	Wettest five days (Rx5day)
1909	19.1 mm (0.8 in)
1910	126.6 mm (5.0 in)
1911	108.7 mm (4.3 in)
1912	83.4 mm (3.3 in)
1914	15.0 mm (0.6 in)
1915	59.4 mm (2.3 in)
1916	126.5 mm (5.0 in)
1917	59.4 mm (2.3 in)
1918	50.8 mm (2.0 in)
1919	48.5 mm (1.9 in)
1920	58.7 mm (2.3 in)
1921	65.0 mm (2.6 in)
1922	57.2 mm (2.3 in)
1923	89.7 mm (3.5 in)
1924	63.2 mm (2.5 in)
1925	83.0 mm (3.3 in)
1926	52.3 mm (2.1 in)
1927	53.8 mm (2.1 in)
1928	176.7 mm (7.0 in)
1929	54.1 mm (2.1 in)
1930	76.7 mm (3.0 in)
1931	114.3 mm (4.5 in)
1932	45.2 mm (1.8 in)
1933	93.4 mm (3.7 in)
1934	100.1 mm (3.9 in)
1935	34.9 mm (1.4 in)
1936	46.7 mm (1.8 in)
1937	48.3 mm (1.9 in)
1938	41.4 mm (1.6 in)
1939	121.6 mm (4.8 in)
1940	31.0 mm (1.2 in)
1941	86.1 mm (3.4 in)
1942	59.3 mm (2.3 in)
1943	54.6 mm (2.1 in)
1944	34.2 mm (1.3 in)
1945	38.3 mm (1.5 in)
1946	57.1 mm (2.2 in)
1947	69.1 mm (2.7 in)
1948	59.4 mm (2.3 in)
1949	122.8 mm (4.8 in)
1950	84.6 mm (3.3 in)
1951	39.6 mm (1.6 in)
1952	62.0 mm (2.4 in)
1953	36.3 mm (1.4 in)
1954	175.0 mm (6.9 in)
1955	73.9 mm (2.9 in)
1956	114.1 mm (4.5 in)
1957	60.0 mm (2.4 in)
1958	44.5 mm (1.8 in)
1959	74.2 mm (2.9 in)
1960	47.1 mm (1.9 in)
1961	47.7 mm (1.9 in)
1962	89.9 mm (3.5 in)
1963	51.4 mm (2.0 in)
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	64.8 mm (2.6 in)
1972	63.0 mm (2.5 in)
1973	53.5 mm (2.1 in)
1974	141.0 mm (5.6 in)
1975	69.3 mm (2.7 in)
1976	59.2 mm (2.3 in)
1977	41.0 mm (1.6 in)
1978	58.4 mm (2.3 in)
1979	35.2 mm (1.4 in)
1980	78.6 mm (3.1 in)
1981	56.4 mm (2.2 in)
1982	64.6 mm (2.5 in)
1983	51.8 mm (2.0 in)
1984	90.0 mm (3.5 in)
1985	39.8 mm (1.6 in)
1986	35.4 mm (1.4 in)
1987	33.8 mm (1.3 in)
1988	42.6 mm (1.7 in)
1989	57.0 mm (2.2 in)
1990	31.0 mm (1.2 in)
1991	39.6 mm (1.6 in)
1992	45.6 mm (1.8 in)
1993	48.2 mm (1.9 in)
1994	70.0 mm (2.8 in)
1995	58.0 mm (2.3 in)
1996	49.6 mm (2.0 in)
1997	31.2 mm (1.2 in)
1998	58.0 mm (2.3 in)
1999	49.7 mm (2.0 in)
2000	n/a
2001	20.0 mm (0.8 in)
2002	38.4 mm (1.5 in)
2003	58.2 mm (2.3 in)
2004	39.2 mm (1.5 in)
2005	42.5 mm (1.7 in)
2006	23.4 mm (0.9 in)
2007	83.0 mm (3.3 in)
2008	44.2 mm (1.7 in)
2009	32.5 mm (1.3 in)
2010	61.8 mm (2.4 in)
2011	89.8 mm (3.5 in)
2012	184.9 mm (7.3 in)
2013	60.4 mm (2.4 in)
2014	45.0 mm (1.8 in)
2015	53.8 mm (2.1 in)
2016	76.6 mm (3.0 in)
2017	91.0 mm (3.6 in)
2018	26.8 mm (1.1 in)
2019	53.0 mm (2.1 in)
2020	58.0 mm (2.3 in)
2021	81.0 mm (3.2 in)
2022	98.7 mm (3.9 in)
2023	38.4 mm (1.5 in)
2024	94.5 mm (3.7 in)
2025	48.2 mm (1.9 in)
2026	34.0 mm (1.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Ardlethan Post Office, 1909 to 2026. The record is 96 days in 2025, marked on the chart; the median year is 34 days.

Longest dry spell (CDD) at Ardlethan Post Office by year
Year	Longest dry spell (CDD)
1909	27 days
1910	62 days
1911	49 days
1912	38 days
1914	15 days
1915	37 days
1916	27 days
1917	19 days
1918	21 days
1919	41 days
1920	48 days
1921	28 days
1922	35 days
1923	50 days
1924	32 days
1925	37 days
1926	68 days
1927	49 days
1928	34 days
1929	46 days
1930	36 days
1931	20 days
1932	30 days
1933	38 days
1934	52 days
1935	55 days
1936	37 days
1937	40 days
1938	48 days
1939	26 days
1940	86 days
1941	34 days
1942	27 days
1943	41 days
1944	55 days
1945	30 days
1946	55 days
1947	28 days
1948	29 days
1949	27 days
1950	35 days
1951	43 days
1952	26 days
1953	56 days
1954	38 days
1955	30 days
1956	23 days
1957	48 days
1958	34 days
1959	26 days
1960	24 days
1961	35 days
1962	52 days
1963	24 days
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	30 days
1972	33 days
1973	16 days
1974	22 days
1975	25 days
1976	25 days
1977	24 days
1978	40 days
1979	35 days
1980	37 days
1981	30 days
1982	45 days
1983	23 days
1984	33 days
1985	46 days
1986	35 days
1987	34 days
1988	25 days
1989	32 days
1990	24 days
1991	48 days
1992	34 days
1993	25 days
1994	28 days
1995	57 days
1996	27 days
1997	31 days
1998	43 days
1999	15 days
2000	n/a
2001	23 days
2002	27 days
2003	44 days
2004	43 days
2005	39 days
2006	52 days
2007	34 days
2008	38 days
2009	27 days
2010	27 days
2011	17 days
2012	21 days
2013	30 days
2014	27 days
2015	41 days
2016	20 days
2017	40 days
2018	71 days
2019	56 days
2020	28 days
2021	40 days
2022	29 days
2023	70 days
2024	57 days
2025	96 days
2026	33 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

79 years, 1910 to 2025

A day with at least 43.2 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 108.6 mm (4.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Ardlethan Post Office: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	43.2 mm (1.7 in)
5 years	59.6 mm (2.3 in)
10 years	70.9 mm (2.8 in)
25 years	85.6 mm (3.4 in)
50 years	97.0 mm (3.8 in)
100 years	108.6 mm (4.3 in)	Longer than the 79 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, 79 years of values from 1910 to 2025.

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: 122.9 mm (4.8 in) in 1928; 99.2 mm (3.9 in) in 1974; 88.9 mm (3.5 in) in 1931.

Download the Data

Data for Ardlethan Post Office standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Ardlethan Post Office 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.

Data as of 2026-10-14. Last revised 14 October 2026 (2026-10-14).