Built 2026-10-19 (19 October 2026)

Black Mtn 2 WSW Threshold Days by Year (USC00040850)

6 fixed thresholds counted per year at Black Mtn 2 WSW (USC00040850): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Black Mtn 2 WSW Thresholds

  • Black Mtn 2 WSW: days with 10 mm (0.39 in) or more of precipitation in 39 years, most in 1983 with 52.
  • Black Mtn 2 WSW: days with 25 mm (0.98 in) or more of precipitation in 39 years, most in 1983 with 33.
  • Black Mtn 2 WSW: days with 50 mm (1.97 in) or more of precipitation in 35 years, most in 1983 with 9.
  • Black Mtn 2 WSW: days with 100 mm (3.94 in) or more of precipitation in 8 years, most in 1955 with 2.
  • 6 fixed thresholds have at least one qualifying day at Black Mtn 2 WSW.
39 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Black Mtn 2 WSW Days per year at Black Mtn 2 WSW with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 52 in 1983. 02040601955: 291956: 241957: 361958: 331959: 161960: 141961: 141962: 211963: 251964: 281965: 251966: 171967: 281968: 221969: 351970: 341971: 191972: 221973: 411974: 201975: 231976: 131977: 171978: 321979: 291980: 241981: 301983: 521984: 231985: 201986: 261987: 281988: 191989: 131990: 171991: 231992: 321993: 341994: 231955195919631967197119751979198419881992
Days per year at Black Mtn 2 WSW with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 52 in 1983.
Days with 10 mm (0.39 in) or more of precipitation per year at Black Mtn 2 WSW
YearDaysDecade average
19552927.6
19562427.6
19573627.6
19583327.6
19591627.6
19601422.9
19611422.9
19622122.9
19632522.9
19642822.9
19652522.9
19661722.9
19672822.9
19682222.9
19693522.9
19703425
19711925
19722225
19734125
19742025
19752325
19761325
19771725
19783225
19792925
19802426.1
19813026.1
19835226.1
19842326.1
19852026.1
19862626.1
19872826.1
19881926.1
19891326.1
19901725.8
19912325.8
19923225.8
19933425.8
19942325.8
First to last qualifying date each year at Black Mtn 2 WSW For each year, a bar from the first to the last day at Black Mtn 2 WSW meeting 10 mm (0.39 in). 1955: 1 January 1955 to 26 December 19551956: 1 January 1956 to 5 December 19561957: 12 January 1957 to 21 December 19571958: 2 January 1958 to 27 December 19581959: 5 January 1959 to 25 December 19591960: 9 January 1960 to 2 December 19601961: 26 January 1961 to 2 December 19611962: 20 January 1962 to 17 December 19621963: 30 January 1963 to 9 December 19631964: 18 January 1964 to 31 December 19641965: 3 January 1965 to 30 December 19651966: 5 January 1966 to 6 December 19661967: 21 January 1967 to 19 December 19671968: 10 January 1968 to 16 December 19681969: 13 January 1969 to 24 December 19691970: 9 January 1970 to 29 December 19701971: 12 January 1971 to 27 December 19711972: 23 January 1972 to 19 December 19721973: 9 January 1973 to 29 December 19731974: 5 January 1974 to 28 December 19741975: 6 January 1975 to 10 November 19751976: 5 February 1976 to 31 December 19761977: 3 January 1977 to 23 December 19771978: 3 January 1978 to 18 December 19781979: 9 January 1979 to 31 December 19791980: 1 January 1980 to 22 December 19801981: 23 January 1981 to 30 December 19811983: 19 January 1983 to 30 December 19831984: 9 February 1984 to 16 December 19841985: 9 February 1985 to 30 December 19851986: 4 January 1986 to 23 December 19861987: 1 January 1987 to 29 December 19871988: 11 January 1988 to 31 December 19881989: 5 January 1989 to 26 November 19891990: 2 January 1990 to 19 December 19901991: 2 February 1991 to 30 December 19911992: 5 January 1992 to 30 December 19921993: 1 January 1993 to 14 December 19931994: 23 January 1994 to 24 December 199419551960196519701975198019861991JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Black Mtn 2 WSW meeting 10 mm (0.39 in).
First to last qualifying date each year at Black Mtn 2 WSW
YearFirst dateLast date
19551955-01-011955-12-26
19561956-01-011956-12-05
19571957-01-121957-12-21
19581958-01-021958-12-27
19591959-01-051959-12-25
19601960-01-091960-12-02
19611961-01-261961-12-02
19621962-01-201962-12-17
19631963-01-301963-12-09
19641964-01-181964-12-31
19651965-01-031965-12-30
19661966-01-051966-12-06
19671967-01-211967-12-19
19681968-01-101968-12-16
19691969-01-131969-12-24
19701970-01-091970-12-29
19711971-01-121971-12-27
19721972-01-231972-12-19
19731973-01-091973-12-29
19741974-01-051974-12-28
19751975-01-061975-11-10
19761976-02-051976-12-31
19771977-01-031977-12-23
19781978-01-031978-12-18
19791979-01-091979-12-31
19801980-01-011980-12-22
19811981-01-231981-12-30
19831983-01-191983-12-30
19841984-02-091984-12-16
19851985-02-091985-12-30
19861986-01-041986-12-23
19871987-01-011987-12-29
19881988-01-111988-12-31
19891989-01-051989-11-26
19901990-01-021990-12-19
19911991-02-021991-12-30
19921992-01-051992-12-30
19931993-01-011993-12-14
19941994-01-231994-12-24

Every Fixed Threshold

Fixed thresholds at Black Mtn 2 WSW
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3952198323
25 mm (0.98 in): Days with 25 mm or more rain393319835
50 mm (1.97 in): Days with 50 mm or more rain35919832
100 mm (3.94 in): Days with 100 mm or more rain8219551
200 mm (7.87 in): Days with 200 mm or more rain1119551
10 cm (3.9 in): Days with 10 cm or more snowfall1119761

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1955.

Download the Data

  • Data for Black Mtn 2 WSW 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).