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Built 2026-10-19 (19 October 2026)

Descanso Rs Threshold Days by Year (USC00042406)

6 fixed thresholds counted per year at Descanso Rs (USC00042406): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Descanso Rs Thresholds

  • Descanso Rs: days with 10 mm (0.39 in) or more of precipitation in 55 years, most in 1957 with 34.
  • Descanso Rs: days with 25 mm (0.98 in) or more of precipitation in 55 years, most in 1993 with 17.
  • Descanso Rs: days with 50 mm (1.97 in) or more of precipitation in 44 years, most in 1980 with 6.
  • Descanso Rs: days with 10 cm (3.9 in) or more of snowfall in 9 years, most in 1949 with 6.
  • 6 fixed thresholds have at least one qualifying day at Descanso Rs.
55 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Descanso Rs Days per year at Descanso Rs with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 34 in 1957. 0102030401896: 131897: 221898: 131910: 131912: 181914: 221944: 151945: 241946: 211947: 81948: 151949: 261950: 131951: 211952: 291954: 191955: 151956: 131957: 341958: 201959: 71960: 141962: 151963: 131964: 201965: 221966: 111967: 211968: 91969: 261970: 101972: 101973: 241974: 131975: 181976: 181977: 171978: 341979: 241980: 261981: 171982: 301983: 311984: 131987: 181988: 131989: 71990: 161991: 221992: 241993: 271994: 181995: 261996: 181997: 151896194419501957196419701977198319911997
Days per year at Descanso Rs with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 34 in 1957.
Days with 10 mm (0.39 in) or more of precipitation per year at Descanso Rs
YearDaysDecade average
18961316
18972216
18981316
19101317.7
19121817.7
19142217.7
19441518.2
19452418.2
19462118.2
1947818.2
19481518.2
19492618.2
19501319
19512119
19522919
19541919
19551519
19561319
19573419
19582019
1959719
19601416.8
19621516.8
19631316.8
19642016.8
19652216.8
19661116.8
19672116.8
1968916.8
19692616.8
19701018.7
19721018.7
19732418.7
19741318.7
19751818.7
19761818.7
19771718.7
19783418.7
19792418.7
19802619.4
19811719.4
19823019.4
19833119.4
19841319.4
19871819.4
19881319.4
1989719.4
19901620.8
19912220.8
19922420.8
19932720.8
19941820.8
19952620.8
19961820.8
19971520.8
First to last qualifying date each year at Descanso Rs For each year, a bar from the first to the last day at Descanso Rs meeting 10 mm (0.39 in). 1896: 21 January 1896 to 28 December 18961897: 13 January 1897 to 17 December 18971898: 3 January 1898 to 22 August 18981910: 1 January 1910 to 20 December 19101912: 27 January 1912 to 5 October 19121914: 16 January 1914 to 20 December 19141944: 24 January 1944 to 3 December 19441945: 20 January 1945 to 24 December 19451946: 3 January 1946 to 28 December 19461947: 29 January 1947 to 9 December 19471948: 6 February 1948 to 27 December 19481949: 2 January 1949 to 20 December 19491950: 9 January 1950 to 19 November 19501951: 11 January 1951 to 31 December 19511952: 7 January 1952 to 31 December 19521954: 12 January 1954 to 10 December 19541955: 2 January 1955 to 2 December 19551956: 21 January 1956 to 6 December 19561957: 4 January 1957 to 17 December 19571958: 26 January 1958 to 12 November 19581959: 5 January 1959 to 22 February 19591960: 11 January 1960 to 27 November 19601962: 13 January 1962 to 28 May 19621963: 10 February 1963 to 10 December 19631964: 20 January 1964 to 28 December 19641965: 7 January 1965 to 30 December 19651966: 1 January 1966 to 7 December 19661967: 24 January 1967 to 20 December 19671968: 8 March 1968 to 27 December 19681969: 14 January 1969 to 9 December 19691970: 10 January 1970 to 30 November 19701972: 20 May 1972 to 9 December 19721973: 4 January 1973 to 23 November 19731974: 1 January 1974 to 28 December 19741975: 3 February 1975 to 13 December 19751976: 4 February 1976 to 31 December 19761977: 3 January 1977 to 29 December 19771978: 10 January 1978 to 19 December 19781979: 5 January 1979 to 22 December 19791980: 8 January 1980 to 5 December 19801981: 28 January 1981 to 31 December 19811982: 3 January 1982 to 30 December 19821983: 27 January 1983 to 27 December 19831984: 1 April 1984 to 29 December 19841987: 5 January 1987 to 18 December 19871988: 6 January 1988 to 21 December 19881989: 6 January 1989 to 11 May 19891990: 2 January 1990 to 22 December 19901991: 4 January 1991 to 30 December 19911992: 6 January 1992 to 30 December 19921993: 6 January 1993 to 15 December 19931994: 25 January 1994 to 25 December 19941995: 5 January 1995 to 13 December 19951996: 22 January 1996 to 28 December 19961997: 3 January 1997 to 21 December 199718961945195219601968197619831992JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Descanso Rs meeting 10 mm (0.39 in).
First to last qualifying date each year at Descanso Rs
YearFirst dateLast date
18961896-01-211896-12-28
18971897-01-131897-12-17
18981898-01-031898-08-22
19101910-01-011910-12-20
19121912-01-271912-10-05
19141914-01-161914-12-20
19441944-01-241944-12-03
19451945-01-201945-12-24
19461946-01-031946-12-28
19471947-01-291947-12-09
19481948-02-061948-12-27
19491949-01-021949-12-20
19501950-01-091950-11-19
19511951-01-111951-12-31
19521952-01-071952-12-31
19541954-01-121954-12-10
19551955-01-021955-12-02
19561956-01-211956-12-06
19571957-01-041957-12-17
19581958-01-261958-11-12
19591959-01-051959-02-22
19601960-01-111960-11-27
19621962-01-131962-05-28
19631963-02-101963-12-10
19641964-01-201964-12-28
19651965-01-071965-12-30
19661966-01-011966-12-07
19671967-01-241967-12-20
19681968-03-081968-12-27
19691969-01-141969-12-09
19701970-01-101970-11-30
19721972-05-201972-12-09
19731973-01-041973-11-23
19741974-01-011974-12-28
19751975-02-031975-12-13
19761976-02-041976-12-31
19771977-01-031977-12-29
19781978-01-101978-12-19
19791979-01-051979-12-22
19801980-01-081980-12-05
19811981-01-281981-12-31
19821982-01-031982-12-30
19831983-01-271983-12-27
19841984-04-011984-12-29
19871987-01-051987-12-18
19881988-01-061988-12-21
19891989-01-061989-05-11
19901990-01-021990-12-22
19911991-01-041991-12-30
19921992-01-061992-12-30
19931993-01-061993-12-15
19941994-01-251994-12-25
19951995-01-051995-12-13
19961996-01-221996-12-28
19971997-01-031997-12-21

Every Fixed Threshold

Fixed thresholds at Descanso Rs
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain5534195715
25 mm (0.98 in): Days with 25 mm or more rain551719936
50 mm (1.97 in): Days with 50 mm or more rain44619801
100 mm (3.94 in): Days with 100 mm or more rain7219661
10 cm (3.9 in): Days with 10 cm or more snowfall9619492
25 cm (9.8 in): Days with 25 cm or more snowfall2218961

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1896.

Download the Data

  • Data for Descanso Rs 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).