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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Castro Threshold Days by Year (BR002450000)

4 fixed thresholds counted per year at Castro (BR002450000): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Castro Thresholds

  • Castro: days with 10 mm (0.39 in) or more of precipitation in 26 years, most in 1963 with 60.
  • Castro: days with 25 mm (0.98 in) or more of precipitation in 26 years, most in 1965 with 30.
  • Castro: days with 50 mm (1.97 in) or more of precipitation in 26 years, most in 1965 with 12.
  • Castro: days with 100 mm (3.94 in) or more of precipitation in 5 years, most in 1954 with 1.
  • 4 fixed thresholds have at least one qualifying day at Castro.
26 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Castro Days per year at Castro with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 60 in 1963. 02040601953: 481954: 461955: 471956: 391957: 531958: 421959: 411960: 541961: 581962: 441963: 601964: 471965: 561966: 581967: 441968: 431969: 431970: 561971: 461972: 561973: 601974: 451975: 511977: 531978: 381979: 41195319561959196219651968197119741978
Days per year at Castro with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 60 in 1963.
Days with 10 mm (0.39 in) or more of precipitation per year at Castro
YearDaysDecade average
19534845.1
19544645.1
19554745.1
19563945.1
19575345.1
19584245.1
19594145.1
19605450.7
19615850.7
19624450.7
19636050.7
19644750.7
19655650.7
19665850.7
19674450.7
19684350.7
19694350.7
19705649.6
19714649.6
19725649.6
19736049.6
19744549.6
19755149.6
19775349.6
19783849.6
19794149.6
First to last qualifying date each year at Castro For each year, a bar from the first to the last day at Castro meeting 10 mm (0.39 in). 1953: 4 January 1953 to 28 December 19531954: 3 January 1954 to 28 December 19541955: 6 January 1955 to 29 December 19551956: 6 January 1956 to 22 December 19561957: 3 January 1957 to 13 December 19571958: 3 January 1958 to 20 December 19581959: 4 January 1959 to 22 December 19591960: 7 January 1960 to 18 December 19601961: 1 January 1961 to 16 December 19611962: 8 January 1962 to 18 December 19621963: 1 January 1963 to 20 December 19631964: 3 January 1964 to 29 December 19641965: 9 January 1965 to 29 December 19651966: 4 January 1966 to 17 December 19661967: 2 January 1967 to 31 December 19671968: 1 January 1968 to 30 December 19681969: 4 January 1969 to 30 December 19691970: 1 January 1970 to 31 December 19701971: 2 January 1971 to 30 December 19711972: 8 January 1972 to 30 December 19721973: 2 January 1973 to 30 December 19731974: 1 January 1974 to 30 December 19741975: 11 January 1975 to 29 December 19751977: 2 January 1977 to 22 December 19771978: 17 January 1978 to 26 December 19781979: 3 January 1979 to 16 December 19791953195719611965196919731978JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Castro meeting 10 mm (0.39 in).
First to last qualifying date each year at Castro
YearFirst dateLast date
19531953-01-041953-12-28
19541954-01-031954-12-28
19551955-01-061955-12-29
19561956-01-061956-12-22
19571957-01-031957-12-13
19581958-01-031958-12-20
19591959-01-041959-12-22
19601960-01-071960-12-18
19611961-01-011961-12-16
19621962-01-081962-12-18
19631963-01-011963-12-20
19641964-01-031964-12-29
19651965-01-091965-12-29
19661966-01-041966-12-17
19671967-01-021967-12-31
19681968-01-011968-12-30
19691969-01-041969-12-30
19701970-01-011970-12-31
19711971-01-021971-12-30
19721972-01-081972-12-30
19731973-01-021973-12-30
19741974-01-011974-12-30
19751975-01-111975-12-29
19771977-01-021977-12-22
19781978-01-171978-12-26
19791979-01-031979-12-16

Every Fixed Threshold

Fixed thresholds at Castro
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2660196341
25 mm (0.98 in): Days with 25 mm or more rain2630196516
50 mm (1.97 in): Days with 50 mm or more rain261219652
100 mm (3.94 in): Days with 100 mm or more rain5119541

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1953.

Download the Data

  • Data for Castro 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).