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Built 2026-10-15 (15 October 2026)

Merlwood State School Weather Records (ASN00040131)

Record envelope, standing records and threshold days for Merlwood State School (ASN00040131), Australia, with 53 years of record.

Key Facts for Merlwood State School

  • Merlwood State School (ASN00040131) is a weather station in Australia at -26.17 latitude and 151.90 longitude, n/a above sea level.
  • The station reports from 1911 to 1963, 53 years of record.
  • 0 records set at Merlwood State School still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Merlwood State School set a daily record precipitation of 21.1 mm (0.8 in) on 18 November 1963.

About the Station

  • Location: Australia, -26.17 latitude, 151.90 longitude.
  • Elevation: n/a.
  • Period of record: 1911 to 1963, 53 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Merlwood State School, with 2026 drawn through them The band shows the record high and record low for each calendar day at Merlwood State School. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 000111 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Merlwood State School. 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 Merlwood State School, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
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Which Years Hold Standing Records

0 standing records
Standing records at Merlwood State School by the year they were set 0 records at Merlwood State School still stand. 00000000000
0 records at Merlwood State School still stand.
Standing records at Merlwood State School by the year they were set
Year setStanding records

Wettest Day of Each Month

Jan: 212.1 mm (8.4 in)
Record daily precipitation for each month at Merlwood State School The wettest day on record for each calendar month at Merlwood State School. The most was 212.1 mm (8.4 in) on 20 January 1929. 0100200300 Jan: 212.1 mm (8.4 in), 20 January 1929 Jan Feb: 103.9 mm (4.1 in), 9 February 1942 Feb Mar: 87.1 mm (3.4 in), 16 March 1937 Mar Apr: 72.1 mm (2.8 in), 4 April 1932 Apr May: 74.7 mm (2.9 in), 10 May 1930 May Jun: 107.2 mm (4.2 in), 10 June 1921 Jun Jul: 50.8 mm (2.0 in), 20 July 1916 Jul Aug: 48.8 mm (1.9 in), 29 August 1963 Aug Sep: 58.4 mm (2.3 in), 27 September 1926 Sep Oct: 72.1 mm (2.8 in), 28 October 1916 Oct Nov: 78.7 mm (3.1 in), 28 November 1927 Nov Dec: 74.9 mm (2.9 in), 28 December 1921 Dec
The wettest day on record for each calendar month at Merlwood State School. The most was 212.1 mm (8.4 in) on 20 January 1929.
Record daily precipitation for each month at Merlwood State School
MonthRecord daily precipitation (mm)Date
Jan212.1 mm (8.4 in)20 January 1929
Feb103.9 mm (4.1 in)9 February 1942
Mar87.1 mm (3.4 in)16 March 1937
Apr72.1 mm (2.8 in)4 April 1932
May74.7 mm (2.9 in)10 May 1930
Jun107.2 mm (4.2 in)10 June 1921
Jul50.8 mm (2.0 in)20 July 1916
Aug48.8 mm (1.9 in)29 August 1963
Sep58.4 mm (2.3 in)27 September 1926
Oct72.1 mm (2.8 in)28 October 1916
Nov78.7 mm (3.1 in)28 November 1927
Dec74.9 mm (2.9 in)28 December 1921

Latest Records

20
Latest records at Merlwood State School
DateStationRecordValueBeat old record byOld record stoodSignificance
18 November 1963Merlwood State School, AUdaily rain21.1 mm (0.8 in)4.6 mm (0.18 in)32 years17 of 100 (Routine)
31 October 1963Merlwood State School, AUdaily rain50.5 mm (2.0 in)35.3 mm (1.4 in)25 years38 of 100 (Notable)
26 September 1963Merlwood State School, AUdaily rain13.0 mm (0.5 in)4.1 mm (0.16 in)29 years16 of 100 (Routine)
29 August 1963Merlwood State School, AUmonthly rain48.8 mm (1.9 in)14.3 mm (0.6 in)24 years41 of 100 (Notable)
26 August 1963Merlwood State School, AUdaily rain27.2 mm (1.1 in)17.0 mm (0.7 in)44 years40 of 100 (Notable)
9 August 1963Merlwood State School, AUdaily rain18.0 mm (0.7 in)8.6 mm (0.34 in)37 years20 of 100 (Routine)
21 May 1963Merlwood State School, AUdaily rain14.2 mm (0.6 in)0.2 mm (0.01 in)22 years11 of 100 (Routine)
20 May 1963Merlwood State School, AUdaily rain12.2 mm (0.5 in)2.0 mm (0.08 in)17 years11 of 100 (Routine)
27 March 1963Merlwood State School, AUdaily rain32.3 mm (1.3 in)29.0 mm (1.1 in)34 years36 of 100 (Notable)
18 March 1963Merlwood State School, AUdaily rain24.1 mm (0.9 in)7.6 mm (0.30 in)22 years16 of 100 (Routine)
2 July 1962Merlwood State School, AUdaily rain (Tie)6.6 mm (0.26 in)tie39 years4 of 100 (Routine)
28 May 1962Merlwood State School, AUdaily rain20.3 mm (0.8 in)19.3 mm (0.8 in)24 years20 of 100 (Routine)
13 April 1962Merlwood State School, AUdaily rain14.2 mm (0.6 in)4.0 mm (0.16 in)23 years13 of 100 (Routine)
12 April 1962Merlwood State School, AUdaily rain17.3 mm (0.7 in)6.9 mm (0.27 in)48 years20 of 100 (Routine)
9 April 1962Merlwood State School, AUdaily rain19.3 mm (0.8 in)7.4 mm (0.29 in)37 years20 of 100 (Routine)
30 March 1962Merlwood State School, AUdaily rain10.9 mm (0.4 in)2.3 mm (0.09 in)24 years13 of 100 (Routine)
5 March 1962Merlwood State School, AUdaily rain22.6 mm (0.9 in)2.3 mm (0.09 in)31 years15 of 100 (Routine)
19 November 1959Merlwood State School, AUdaily rain24.1 mm (0.9 in)1.2 mm (0.05 in)16 years8 of 100 (Routine)
11 November 1959Merlwood State School, AUdaily rain35.1 mm (1.4 in)10.5 mm (0.4 in)12 years14 of 100 (Routine)
10 November 1959Merlwood State School, AUdaily rain21.8 mm (0.9 in)5.3 mm (0.21 in)20 years13 of 100 (Routine)

Extremes by Year

1911 to 1963
Yearly extremes at Merlwood State School: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)212.1 mm (8.4 in)192960.5 mm (2.4 in)43
Wettest five days (Rx5day)268.5 mm (10.6 in)1929101.9 mm (4.0 in)43
Longest dry spell (CDD)105 days194641 days43

Wettest day (Rx1day)

Wettest day (Rx1day) at Merlwood State School by year The wettest day of the year at Merlwood State School, 1911 to 1963. The record is 212.1 mm (8.4 in) in 1929, marked on the chart; the median year is 60.5 mm (2.4 in). 010020030019201930194019501960Record: 212.1 mm (8.4 in) in 1929
The wettest day of the year at Merlwood State School, 1911 to 1963. The record is 212.1 mm (8.4 in) in 1929, marked on the chart; the median year is 60.5 mm (2.4 in).
Wettest day (Rx1day) at Merlwood State School by year
YearWettest day (Rx1day)
191116.5 mm (0.6 in)
191245.0 mm (1.8 in)
191351.1 mm (2.0 in)
191470.1 mm (2.8 in)
191559.7 mm (2.4 in)
191672.1 mm (2.8 in)
191776.2 mm (3.0 in)
1918135.1 mm (5.3 in)
191981.3 mm (3.2 in)
192060.2 mm (2.4 in)
1921107.2 mm (4.2 in)
192245.5 mm (1.8 in)
192366.0 mm (2.6 in)
192471.6 mm (2.8 in)
1925102.6 mm (4.0 in)
192658.4 mm (2.3 in)
192778.7 mm (3.1 in)
192897.8 mm (3.9 in)
1929212.1 mm (8.4 in)
193074.7 mm (2.9 in)
193180.5 mm (3.2 in)
193272.1 mm (2.8 in)
193360.5 mm (2.4 in)
193476.7 mm (3.0 in)
193532.8 mm (1.3 in)
193638.9 mm (1.5 in)
193787.1 mm (3.4 in)
193854.6 mm (2.1 in)
193990.9 mm (3.6 in)
194064.8 mm (2.6 in)
194135.6 mm (1.4 in)
1942103.9 mm (4.1 in)
194345.5 mm (1.8 in)
194455.6 mm (2.2 in)
194545.7 mm (1.8 in)
194643.4 mm (1.7 in)
194774.4 mm (2.9 in)
195141.7 mm (1.6 in)
19530.0 mm (0.00 in)
195940.6 mm (1.6 in)
196020.3 mm (0.8 in)
196244.5 mm (1.8 in)
196350.5 mm (2.0 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Merlwood State School by year The wettest five days of the year at Merlwood State School, 1911 to 1963. The record is 268.5 mm (10.6 in) in 1929, marked on the chart; the median year is 101.9 mm (4.0 in). 010020030019201930194019501960Record: 268.5 mm (10.6 in) in 1929
The wettest five days of the year at Merlwood State School, 1911 to 1963. The record is 268.5 mm (10.6 in) in 1929, marked on the chart; the median year is 101.9 mm (4.0 in).
Wettest five days (Rx5day) at Merlwood State School by year
YearWettest five days (Rx5day)
191135.5 mm (1.4 in)
191275.2 mm (3.0 in)
191376.7 mm (3.0 in)
191493.9 mm (3.7 in)
191593.9 mm (3.7 in)
1916118.6 mm (4.7 in)
191792.5 mm (3.6 in)
1918171.2 mm (6.7 in)
1919101.9 mm (4.0 in)
192088.4 mm (3.5 in)
1921204.2 mm (8.0 in)
1922140.2 mm (5.5 in)
1923144.4 mm (5.7 in)
1924190.8 mm (7.5 in)
1925179.0 mm (7.0 in)
1926169.4 mm (6.7 in)
1927113.8 mm (4.5 in)
1928197.4 mm (7.8 in)
1929268.5 mm (10.6 in)
193092.7 mm (3.6 in)
1931159.8 mm (6.3 in)
1932178.0 mm (7.0 in)
1933102.4 mm (4.0 in)
1934120.1 mm (4.7 in)
193568.6 mm (2.7 in)
193645.8 mm (1.8 in)
1937137.7 mm (5.4 in)
193874.0 mm (2.9 in)
1939147.1 mm (5.8 in)
1940144.0 mm (5.7 in)
194158.2 mm (2.3 in)
1942203.4 mm (8.0 in)
194367.1 mm (2.6 in)
194480.5 mm (3.2 in)
1945144.0 mm (5.7 in)
194668.4 mm (2.7 in)
1947158.0 mm (6.2 in)
195147.1 mm (1.9 in)
19530.0 mm (0.00 in)
195969.6 mm (2.7 in)
196042.9 mm (1.7 in)
196253.1 mm (2.1 in)
196383.6 mm (3.3 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Merlwood State School by year The longest dry spell of the year at Merlwood State School, 1911 to 1963. The record is 105 days in 1946, marked on the chart; the median year is 41 days. 025507510012519201930194019501960Record: 105 days in 1946
The longest dry spell of the year at Merlwood State School, 1911 to 1963. The record is 105 days in 1946, marked on the chart; the median year is 41 days.
Longest dry spell (CDD) at Merlwood State School by year
YearLongest dry spell (CDD)
191144 days
191246 days
191337 days
191442 days
191536 days
191624 days
191734 days
191861 days
191951 days
192030 days
192137 days
192255 days
192343 days
192432 days
192534 days
192674 days
192752 days
192879 days
192967 days
193023 days
193125 days
193246 days
193331 days
193431 days
193534 days
193628 days
193741 days
193822 days
193966 days
194056 days
194149 days
194247 days
194365 days
194441 days
194529 days
1946105 days
194747 days
195134 days
195331 days
195915 days
196015 days
196227 days
196364 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

35 years, 1912 to 1947

A day with at least 65.3 mm (2.6 in) of rain is expected about once in 2 years. A day with at least 192.4 mm (7.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Merlwood State School: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years65.3 mm (2.6 in)
5 years91.6 mm (3.6 in)
10 years111.7 mm (4.4 in)
25 years140.8 mm (5.5 in)
50 years165.3 mm (6.5 in)Longer than the 35 years of record
100 years192.4 mm (7.6 in)Longer than the 35 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, 35 years of values from 1912 to 1947.

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: 212.1 mm (8.4 in) in 1929; 135.1 mm (5.3 in) in 1918; 107.2 mm (4.2 in) in 1921.

Download the Data

  • Data for Merlwood State School standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Merlwood State School 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 . Last revised (2025-12-31).