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Built 2026-10-19 (19 October 2026)

Riversdale Threshold Days by Year (ASN00042052)

4 fixed thresholds counted per year at Riversdale (ASN00042052): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Riversdale Thresholds

  • Riversdale: days with 10 mm (0.39 in) or more of precipitation in 37 years, most in 1950 with 42.
  • Riversdale: days with 25 mm (0.98 in) or more of precipitation in 37 years, most in 1956 with 13.
  • Riversdale: days with 50 mm (1.97 in) or more of precipitation in 27 years, most in 1969 with 6.
  • Riversdale: days with 100 mm (3.94 in) or more of precipitation in 2 years, most in 1953 with 1.
  • 4 fixed thresholds have at least one qualifying day at Riversdale.
37 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Riversdale Days per year at Riversdale with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 42 in 1950. 02040601950: 421951: 121952: 141953: 91954: 251955: 141956: 251957: 81958: 181959: 191960: 121961: 201962: 271963: 191964: 201965: 131966: 91967: 171968: 161969: 171970: 141971: 231972: 111973: 151974: 151975: 191976: 181977: 141978: 191979: 131980: 81981: 121982: 141983: 291984: 221985: 151986: 181950195419581962196619701974197819821986
Days per year at Riversdale with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 42 in 1950.
Days with 10 mm (0.39 in) or more of precipitation per year at Riversdale
YearDaysDecade average
19504218.6
19511218.6
19521418.6
1953918.6
19542518.6
19551418.6
19562518.6
1957818.6
19581818.6
19591918.6
19601217
19612017
19622717
19631917
19642017
19651317
1966917
19671717
19681617
19691717
19701416.1
19712316.1
19721116.1
19731516.1
19741516.1
19751916.1
19761816.1
19771416.1
19781916.1
19791316.1
1980816.9
19811216.9
19821416.9
19832916.9
19842216.9
19851516.9
19861816.9
First to last qualifying date each year at Riversdale For each year, a bar from the first to the last day at Riversdale meeting 10 mm (0.39 in). 1950: 18 January 1950 to 31 December 19501951: 16 January 1951 to 26 December 19511952: 16 February 1952 to 25 October 19521953: 16 February 1953 to 24 November 19531954: 3 January 1954 to 12 December 19541955: 22 January 1955 to 19 December 19551956: 20 January 1956 to 14 December 19561957: 4 January 1957 to 31 December 19571958: 29 January 1958 to 30 December 19581959: 10 January 1959 to 11 November 19591960: 19 January 1960 to 14 December 19601961: 18 February 1961 to 15 December 19611962: 2 January 1962 to 31 December 19621963: 10 January 1963 to 13 December 19631964: 24 January 1964 to 29 December 19641965: 5 January 1965 to 15 December 19651966: 18 January 1966 to 14 October 19661967: 25 February 1967 to 29 December 19671968: 12 January 1968 to 25 December 19681969: 10 January 1969 to 14 November 19691970: 12 January 1970 to 26 December 19701971: 18 January 1971 to 27 December 19711972: 14 January 1972 to 31 December 19721973: 13 January 1973 to 31 December 19731974: 7 January 1974 to 19 November 19741975: 10 January 1975 to 27 December 19751976: 14 January 1976 to 23 December 19761977: 22 January 1977 to 24 November 19771978: 15 January 1978 to 27 December 19781979: 18 January 1979 to 24 October 19791980: 31 January 1980 to 6 December 19801981: 5 February 1981 to 14 December 19811982: 16 January 1982 to 29 December 19821983: 1 January 1983 to 4 December 19831984: 6 January 1984 to 12 December 19841985: 19 February 1985 to 8 December 19851986: 5 January 1986 to 13 November 198619501955196019651970197519801985JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Riversdale meeting 10 mm (0.39 in).
First to last qualifying date each year at Riversdale
YearFirst dateLast date
19501950-01-181950-12-31
19511951-01-161951-12-26
19521952-02-161952-10-25
19531953-02-161953-11-24
19541954-01-031954-12-12
19551955-01-221955-12-19
19561956-01-201956-12-14
19571957-01-041957-12-31
19581958-01-291958-12-30
19591959-01-101959-11-11
19601960-01-191960-12-14
19611961-02-181961-12-15
19621962-01-021962-12-31
19631963-01-101963-12-13
19641964-01-241964-12-29
19651965-01-051965-12-15
19661966-01-181966-10-14
19671967-02-251967-12-29
19681968-01-121968-12-25
19691969-01-101969-11-14
19701970-01-121970-12-26
19711971-01-181971-12-27
19721972-01-141972-12-31
19731973-01-131973-12-31
19741974-01-071974-11-19
19751975-01-101975-12-27
19761976-01-141976-12-23
19771977-01-221977-11-24
19781978-01-151978-12-27
19791979-01-181979-10-24
19801980-01-311980-12-06
19811981-02-051981-12-14
19821982-01-161982-12-29
19831983-01-011983-12-04
19841984-01-061984-12-12
19851985-02-191985-12-08
19861986-01-051986-11-13

Every Fixed Threshold

Fixed thresholds at Riversdale
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3742195018
25 mm (0.98 in): Days with 25 mm or more rain371319567
50 mm (1.97 in): Days with 50 mm or more rain27619693
100 mm (3.94 in): Days with 100 mm or more rain2119531

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1950.

Download the Data

  • Data for Riversdale 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).