Castle Mountain Weather Records (ASN00055010)

Record envelope, standing records and threshold days for Castle Mountain (ASN00055010), Australia, with 62 years of record.

Key Facts for Castle Mountain

Castle Mountain (ASN00055010) is a weather station in Australia at -31.50 latitude and 150.70 longitude, n/a above sea level.
The station reports from 1892 to 1953, 62 years of record.
0 records set at Castle Mountain still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Castle Mountain set a daily record precipitation of 10.9 mm (0.4 in) on 24 November 1953.

About the Station

Location: Australia, -31.50 latitude, 150.70 longitude.
Elevation: n/a.
Period of record: 1892 to 1953, 62 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 Castle Mountain. 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 Castle Mountain, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

0 standing records

0 records at Castle Mountain still stand.

Wettest Day of Each Month

Mar: 152.4 mm (6.0 in)

The wettest day on record for each calendar month at Castle Mountain. The most was 152.4 mm (6.0 in) on 3 March 1921.

Record daily precipitation for each month at Castle Mountain
Month	Record daily precipitation (mm)	Date
Jan	71.1 mm (2.8 in)	29 January 1899
Feb	97.8 mm (3.9 in)	29 February 1904
Mar	152.4 mm (6.0 in)	3 March 1921
Apr	43.7 mm (1.7 in)	22 April 1901
May	46.2 mm (1.8 in)	2 May 1953
Jun	64.3 mm (2.5 in)	3 June 1907
Jul	73.7 mm (2.9 in)	26 July 1897
Aug	59.4 mm (2.3 in)	12 August 1899
Sep	63.5 mm (2.5 in)	24 September 1892
Oct	53.6 mm (2.1 in)	21 October 1935
Nov	84.3 mm (3.3 in)	25 November 1911
Dec	95.3 mm (3.8 in)	5 December 1931

Latest Records

Latest records at Castle Mountain
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
24 November 1953	Castle Mountain, AU	daily rain	10.9 mm (0.4 in)	5.8 mm (0.23 in)	46 years	20 of 100 (Routine)
7 October 1953	Castle Mountain, AU	daily rain	8.9 mm (0.35 in)	6.9 mm (0.27 in)	16 years	17 of 100 (Routine)
29 August 1953	Castle Mountain, AU	daily rain	25.7 mm (1.0 in)	1.3 mm (0.05 in)	36 years	18 of 100 (Routine)
5 August 1953	Castle Mountain, AU	daily rain	19.8 mm (0.8 in)	2.0 mm (0.08 in)	35 years	18 of 100 (Routine)
7 May 1953	Castle Mountain, AU	daily rain	9.1 mm (0.36 in)	5.3 mm (0.21 in)	18 years	16 of 100 (Routine)
2 May 1953	Castle Mountain, AU	monthly rain	46.2 mm (1.8 in)	2.8 mm (0.11 in)	26 years	27 of 100 (Routine)
29 November 1945	Castle Mountain, AU	daily rain	19.1 mm (0.8 in)	1.3 mm (0.05 in)	0 years	6 of 100 (Routine)
9 August 1945	Castle Mountain, AU	daily rain	12.7 mm (0.5 in)	5.1 mm (0.20 in)	15 years	14 of 100 (Routine)
23 June 1945	Castle Mountain, AU	daily rain	50.8 mm (2.0 in)	21.3 mm (0.8 in)	12 years	28 of 100 (Routine)
8 May 1945	Castle Mountain, AU	daily rain	27.9 mm (1.1 in)	19.0 mm (0.7 in)	42 years	38 of 100 (Notable)
30 March 1945	Castle Mountain, AU	daily rain	57.2 mm (2.3 in)	49.1 mm (1.9 in)	30 years	41 of 100 (Notable)
29 March 1945	Castle Mountain, AU	daily rain	24.1 mm (0.9 in)	1.2 mm (0.05 in)	40 years	17 of 100 (Routine)
28 January 1945	Castle Mountain, AU	daily rain	38.1 mm (1.5 in)	7.1 mm (0.28 in)	38 years	20 of 100 (Routine)
29 November 1944	Castle Mountain, AU	daily rain	17.8 mm (0.7 in)	3.1 mm (0.12 in)	17 years	12 of 100 (Routine)
15 June 1944	Castle Mountain, AU	daily rain	16.5 mm (0.6 in)	7.6 mm (0.30 in)	1 year	12 of 100 (Routine)
19 December 1943	Castle Mountain, AU	daily rain	82.6 mm (3.3 in)	41.2 mm (1.6 in)	16 years	42 of 100 (Notable)
9 September 1943	Castle Mountain, AU	daily rain	11.4 mm (0.4 in)	5.0 mm (0.20 in)	49 years	20 of 100 (Routine)
15 June 1943	Castle Mountain, AU	daily rain	8.9 mm (0.35 in)	1.3 mm (0.05 in)	46 years	20 of 100 (Routine)
14 January 1943	Castle Mountain, AU	daily rain	41.1 mm (1.6 in)	5.3 mm (0.21 in)	32 years	17 of 100 (Routine)
28 December 1942	Castle Mountain, AU	daily rain	21.6 mm (0.9 in)	1.8 mm (0.07 in)	28 years	14 of 100 (Routine)

Extremes by Year

1892 to 1953

Yearly extremes at Castle Mountain: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	152.4 mm (6.0 in)	1921	53.1 mm (2.1 in)	56
Wettest five days (Rx5day)	236.6 mm (9.3 in)	1921	79.8 mm (3.1 in)	56
Longest dry spell (CDD)	75 days	1934	31 days	56

Wettest day (Rx1day)

The wettest day of the year at Castle Mountain, 1892 to 1953. The record is 152.4 mm (6.0 in) in 1921, marked on the chart; the median year is 53.1 mm (2.1 in).

Wettest day (Rx1day) at Castle Mountain by year
Year	Wettest day (Rx1day)
1892	63.5 mm (2.5 in)
1893	52.1 mm (2.1 in)
1894	57.2 mm (2.3 in)
1895	57.2 mm (2.3 in)
1896	48.3 mm (1.9 in)
1897	73.7 mm (2.9 in)
1898	85.9 mm (3.4 in)
1899	71.1 mm (2.8 in)
1900	41.9 mm (1.6 in)
1901	43.7 mm (1.7 in)
1902	33.0 mm (1.3 in)
1903	53.8 mm (2.1 in)
1904	97.8 mm (3.9 in)
1905	31.0 mm (1.2 in)
1906	91.4 mm (3.6 in)
1907	64.3 mm (2.5 in)
1908	85.1 mm (3.4 in)
1909	45.2 mm (1.8 in)
1910	70.9 mm (2.8 in)
1911	84.3 mm (3.3 in)
1912	51.3 mm (2.0 in)
1913	41.4 mm (1.6 in)
1914	64.3 mm (2.5 in)
1915	55.9 mm (2.2 in)
1916	80.8 mm (3.2 in)
1917	36.6 mm (1.4 in)
1918	46.5 mm (1.8 in)
1919	41.7 mm (1.6 in)
1920	62.2 mm (2.4 in)
1921	152.4 mm (6.0 in)
1922	70.4 mm (2.8 in)
1923	39.4 mm (1.6 in)
1924	52.3 mm (2.1 in)
1925	30.2 mm (1.2 in)
1926	53.8 mm (2.1 in)
1927	63.5 mm (2.5 in)
1928	42.7 mm (1.7 in)
1929	33.0 mm (1.3 in)
1930	57.2 mm (2.3 in)
1931	95.3 mm (3.8 in)
1932	43.2 mm (1.7 in)
1933	33.0 mm (1.3 in)
1934	43.7 mm (1.7 in)
1935	55.9 mm (2.2 in)
1936	72.6 mm (2.9 in)
1937	50.0 mm (2.0 in)
1938	44.5 mm (1.8 in)
1939	21.6 mm (0.9 in)
1940	26.7 mm (1.1 in)
1941	76.2 mm (3.0 in)
1942	48.3 mm (1.9 in)
1943	82.6 mm (3.3 in)
1944	31.8 mm (1.3 in)
1945	57.2 mm (2.3 in)
1946	11.7 mm (0.5 in)
1953	46.2 mm (1.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Castle Mountain, 1892 to 1953. The record is 236.6 mm (9.3 in) in 1921, marked on the chart; the median year is 79.8 mm (3.1 in).

Wettest five days (Rx5day) at Castle Mountain by year
Year	Wettest five days (Rx5day)
1892	83.3 mm (3.3 in)
1893	97.0 mm (3.8 in)
1894	106.7 mm (4.2 in)
1895	67.1 mm (2.6 in)
1896	55.7 mm (2.2 in)
1897	101.6 mm (4.0 in)
1898	111.3 mm (4.4 in)
1899	92.7 mm (3.6 in)
1900	71.6 mm (2.8 in)
1901	46.8 mm (1.8 in)
1902	59.5 mm (2.3 in)
1903	85.5 mm (3.4 in)
1904	140.2 mm (5.5 in)
1905	58.9 mm (2.3 in)
1906	106.3 mm (4.2 in)
1907	65.3 mm (2.6 in)
1908	149.9 mm (5.9 in)
1909	70.4 mm (2.8 in)
1910	177.9 mm (7.0 in)
1911	127.5 mm (5.0 in)
1912	57.0 mm (2.2 in)
1913	71.4 mm (2.8 in)
1914	76.2 mm (3.0 in)
1915	69.1 mm (2.7 in)
1916	136.8 mm (5.4 in)
1917	88.2 mm (3.5 in)
1918	90.4 mm (3.6 in)
1919	41.7 mm (1.6 in)
1920	214.1 mm (8.4 in)
1921	236.6 mm (9.3 in)
1922	119.2 mm (4.7 in)
1923	75.1 mm (3.0 in)
1924	67.8 mm (2.7 in)
1925	45.2 mm (1.8 in)
1926	87.6 mm (3.4 in)
1927	110.3 mm (4.3 in)
1928	66.8 mm (2.6 in)
1929	58.7 mm (2.3 in)
1930	75.4 mm (3.0 in)
1931	143.5 mm (5.6 in)
1932	67.4 mm (2.7 in)
1933	81.1 mm (3.2 in)
1934	67.6 mm (2.7 in)
1935	100.5 mm (4.0 in)
1936	89.3 mm (3.5 in)
1937	78.4 mm (3.1 in)
1938	78.4 mm (3.1 in)
1939	42.0 mm (1.7 in)
1940	41.4 mm (1.6 in)
1941	98.0 mm (3.9 in)
1942	68.6 mm (2.7 in)
1943	104.2 mm (4.1 in)
1944	52.1 mm (2.1 in)
1945	83.3 mm (3.3 in)
1946	17.6 mm (0.7 in)
1953	85.2 mm (3.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Castle Mountain, 1892 to 1953. The record is 75 days in 1934, marked on the chart; the median year is 31 days.

Longest dry spell (CDD) at Castle Mountain by year
Year	Longest dry spell (CDD)
1892	20 days
1893	21 days
1894	23 days
1895	48 days
1896	21 days
1897	72 days
1898	44 days
1899	29 days
1900	34 days
1901	36 days
1902	29 days
1903	30 days
1904	33 days
1905	45 days
1906	33 days
1907	24 days
1908	26 days
1909	20 days
1910	33 days
1911	31 days
1912	32 days
1913	26 days
1914	49 days
1915	35 days
1916	32 days
1917	20 days
1918	43 days
1919	31 days
1920	28 days
1921	27 days
1922	34 days
1923	40 days
1924	23 days
1925	42 days
1926	28 days
1927	25 days
1928	39 days
1929	32 days
1930	24 days
1931	24 days
1932	24 days
1933	31 days
1934	75 days
1935	27 days
1936	39 days
1937	41 days
1938	30 days
1939	36 days
1940	40 days
1941	28 days
1942	29 days
1943	20 days
1944	17 days
1945	20 days
1946	58 days
1953	32 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

48 years, 1893 to 1945

A day with at least 53.5 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 137.5 mm (5.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Castle Mountain: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	53.5 mm (2.1 in)
5 years	72.9 mm (2.9 in)
10 years	87.0 mm (3.4 in)
25 years	106.1 mm (4.2 in)
50 years	121.3 mm (4.8 in)	Longer than the 48 years of record
100 years	137.5 mm (5.4 in)	Longer than the 48 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, 48 years of values from 1893 to 1945.

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: 152.4 mm (6.0 in) in 1921; 97.8 mm (3.9 in) in 1904; 95.3 mm (3.8 in) in 1931.

Download the Data

Data for Castle Mountain standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Castle Mountain 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a