Built 2026-10-18 (18 October 2026)

Manton Dam Threshold Days by Year

5 fixed thresholds counted per year at Manton Dam (ASN00014035): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Manton Dam Thresholds

  • Manton Dam: days with 10 mm (0.39 in) or more of precipitation in 31 years, most in 1950 with 63.
  • Manton Dam: days with 25 mm (0.98 in) or more of precipitation in 31 years, most in 1968 with 29.
  • Manton Dam: days with 50 mm (1.97 in) or more of precipitation in 31 years, most in 1950 with 13.
  • Manton Dam: days with 100 mm (3.94 in) or more of precipitation in 15 years, most in 1956 with 3.
  • 5 fixed thresholds have at least one qualifying day at Manton Dam.
31 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Manton Dam Days per year at Manton Dam with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 63 in 1950. 0204060801948: 401949: 481950: 631951: 311952: 281953: 421954: 441955: 501956: 451957: 521958: 261959: 361960: 481961: 341962: 371963: 491964: 551965: 401966: 431967: 501968: 571969: 411970: 371971: 481972: 381973: 601980: 381985: 331986: 471987: 412004: 4819481952195619601964196819721986
Days per year at Manton Dam with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 63 in 1950.
Days with 10 mm (0.39 in) or more of precipitation per year at Manton Dam
YearDaysDecade average
19484044
19494844
19506341.7
19513141.7
19522841.7
19534241.7
19544441.7
19555041.7
19564541.7
19575241.7
19582641.7
19593641.7
19604845.4
19613445.4
19623745.4
19634945.4
19645545.4
19654045.4
19664345.4
19675045.4
19685745.4
19694145.4
19703745.8
19714845.8
19723845.8
19736045.8
19803839.8
19853339.8
19864739.8
19874139.8
20044848
First to last qualifying date each year at Manton Dam For each year, a bar from the first to the last day at Manton Dam meeting 10 mm (0.39 in). 1948: 1 January 1948 to 29 December 19481949: 3 January 1949 to 30 December 19491950: 9 January 1950 to 21 December 19501951: 4 January 1951 to 29 December 19511952: 10 January 1952 to 13 December 19521953: 2 January 1953 to 31 December 19531954: 2 January 1954 to 29 December 19541955: 2 January 1955 to 26 December 19551956: 8 January 1956 to 27 December 19561957: 3 January 1957 to 31 December 19571958: 7 January 1958 to 27 December 19581959: 6 January 1959 to 25 December 19591960: 7 January 1960 to 28 December 19601961: 10 January 1961 to 31 December 19611962: 4 January 1962 to 29 December 19621963: 7 January 1963 to 30 December 19631964: 4 January 1964 to 31 December 19641965: 12 January 1965 to 30 December 19651966: 2 January 1966 to 28 December 19661967: 5 January 1967 to 30 December 19671968: 2 January 1968 to 26 December 19681969: 5 January 1969 to 15 December 19691970: 10 January 1970 to 24 December 19701971: 6 January 1971 to 26 December 19711972: 4 January 1972 to 31 December 19721973: 1 January 1973 to 31 December 19731980: 23 January 1980 to 10 December 19801985: 5 January 1985 to 22 November 19851986: 4 January 1986 to 28 December 19861987: 7 January 1987 to 26 December 19872004: 1 January 2004 to 31 December 200419481952195619601964196819721986JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Manton Dam meeting 10 mm (0.39 in).
First to last qualifying date each year at Manton Dam
YearFirst dateLast date
19481948-01-011948-12-29
19491949-01-031949-12-30
19501950-01-091950-12-21
19511951-01-041951-12-29
19521952-01-101952-12-13
19531953-01-021953-12-31
19541954-01-021954-12-29
19551955-01-021955-12-26
19561956-01-081956-12-27
19571957-01-031957-12-31
19581958-01-071958-12-27
19591959-01-061959-12-25
19601960-01-071960-12-28
19611961-01-101961-12-31
19621962-01-041962-12-29
19631963-01-071963-12-30
19641964-01-041964-12-31
19651965-01-121965-12-30
19661966-01-021966-12-28
19671967-01-051967-12-30
19681968-01-021968-12-26
19691969-01-051969-12-15
19701970-01-101970-12-24
19711971-01-061971-12-26
19721972-01-041972-12-31
19731973-01-011973-12-31
19801980-01-231980-12-10
19851985-01-051985-11-22
19861986-01-041986-12-28
19871987-01-071987-12-26
20042004-01-012004-12-31

Every Fixed Threshold

Fixed thresholds at Manton Dam
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3163195048
25 mm (0.98 in): Days with 25 mm or more rain3129196821
50 mm (1.97 in): Days with 50 mm or more rain311319504
100 mm (3.94 in): Days with 100 mm or more rain15319562
200 mm (7.87 in): Days with 200 mm or more rain2219561

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1948.

Download the Data

  • Data for Manton Dam 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).