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Built 2026-10-18 (18 October 2026)

Merlwood State School Threshold Days by Year

5 fixed thresholds counted per year at Merlwood State School (ASN00040131): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Merlwood State School Thresholds

  • Merlwood State School: days with 10 mm (0.39 in) or more of precipitation in 35 years, most in 1927 with 35.
  • Merlwood State School: days with 25 mm (0.98 in) or more of precipitation in 35 years, most in 1927 with 17.
  • Merlwood State School: days with 50 mm (1.97 in) or more of precipitation in 27 years, most in 1924 with 6.
  • Merlwood State School: days with 100 mm (3.94 in) or more of precipitation in 5 years, most in 1918 with 1.
  • 5 fixed thresholds have at least one qualifying day at Merlwood State School.
35 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Merlwood State School Days per year at Merlwood State School with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 35 in 1927. 0102030401912: 241913: 271914: 281915: 141916: 251917: 231918: 161919: 161920: 211921: 271922: 161923: 221924: 291925: 201926: 151927: 351928: 301929: 251931: 321932: 181933: 301934: 331935: 251936: 151937: 231938: 341939: 221940: 191941: 101942: 311943: 301944: 171945: 241946: 131947: 28191219161920192419281933193719411945
Days per year at Merlwood State School with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 35 in 1927.
Days with 10 mm (0.39 in) or more of precipitation per year at Merlwood State School
YearDaysDecade average
19122421.6
19132721.6
19142821.6
19151421.6
19162521.6
19172321.6
19181621.6
19191621.6
19202124
19212724
19221624
19232224
19242924
19252024
19261524
19273524
19283024
19292524
19313225.8
19321825.8
19333025.8
19343325.8
19352525.8
19361525.8
19372325.8
19383425.8
19392225.8
19401921.5
19411021.5
19423121.5
19433021.5
19441721.5
19452421.5
19461321.5
19472821.5
First to last qualifying date each year at Merlwood State School For each year, a bar from the first to the last day at Merlwood State School meeting 10 mm (0.39 in). 1912: 2 January 1912 to 21 December 19121913: 8 January 1913 to 28 December 19131914: 11 January 1914 to 31 December 19141915: 7 January 1915 to 20 December 19151916: 3 February 1916 to 14 December 19161917: 23 January 1917 to 25 December 19171918: 9 January 1918 to 17 December 19181919: 18 February 1919 to 3 December 19191920: 3 January 1920 to 9 December 19201921: 14 January 1921 to 30 December 19211922: 12 January 1922 to 16 December 19221923: 3 January 1923 to 23 December 19231924: 7 January 1924 to 31 December 19241925: 2 January 1925 to 31 December 19251926: 17 May 1926 to 31 December 19261927: 21 January 1927 to 28 December 19271928: 10 January 1928 to 31 December 19281929: 12 January 1929 to 31 December 19291931: 7 January 1931 to 12 December 19311932: 10 January 1932 to 22 December 19321933: 6 January 1933 to 29 December 19331934: 2 January 1934 to 28 December 19341935: 5 January 1935 to 28 December 19351936: 8 February 1936 to 29 December 19361937: 4 January 1937 to 29 December 19371938: 7 January 1938 to 26 December 19381939: 24 January 1939 to 27 December 19391940: 9 January 1940 to 6 December 19401941: 10 January 1941 to 26 November 19411942: 17 January 1942 to 30 December 19421943: 15 January 1943 to 29 December 19431944: 10 January 1944 to 21 December 19441945: 13 January 1945 to 20 November 19451946: 7 January 1946 to 4 December 19461947: 23 January 1947 to 10 December 19471912191719221927193319381943JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Merlwood State School meeting 10 mm (0.39 in).
First to last qualifying date each year at Merlwood State School
YearFirst dateLast date
19121912-01-021912-12-21
19131913-01-081913-12-28
19141914-01-111914-12-31
19151915-01-071915-12-20
19161916-02-031916-12-14
19171917-01-231917-12-25
19181918-01-091918-12-17
19191919-02-181919-12-03
19201920-01-031920-12-09
19211921-01-141921-12-30
19221922-01-121922-12-16
19231923-01-031923-12-23
19241924-01-071924-12-31
19251925-01-021925-12-31
19261926-05-171926-12-31
19271927-01-211927-12-28
19281928-01-101928-12-31
19291929-01-121929-12-31
19311931-01-071931-12-12
19321932-01-101932-12-22
19331933-01-061933-12-29
19341934-01-021934-12-28
19351935-01-051935-12-28
19361936-02-081936-12-29
19371937-01-041937-12-29
19381938-01-071938-12-26
19391939-01-241939-12-27
19401940-01-091940-12-06
19411941-01-101941-11-26
19421942-01-171942-12-30
19431943-01-151943-12-29
19441944-01-101944-12-21
19451945-01-131945-11-20
19461946-01-071946-12-04
19471947-01-231947-12-10

Every Fixed Threshold

Fixed thresholds at Merlwood State School
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3535192728
25 mm (0.98 in): Days with 25 mm or more rain3517192712
50 mm (1.97 in): Days with 50 mm or more rain27619244
100 mm (3.94 in): Days with 100 mm or more rain5119181
200 mm (7.87 in): Days with 200 mm or more rain1119291

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1912.

Download the Data

  • 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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).