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Data as of 2025-12-31
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Built 2026-10-16 (16 October 2026)

Mountain View Threshold Days by Year

4 fixed thresholds counted per year at Mountain View (ASN00040149): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mountain View Thresholds

  • Mountain View: days with 10 mm (0.39 in) or more of precipitation in 31 years, most in 1924 with 44.
  • Mountain View: days with 25 mm (0.98 in) or more of precipitation in 31 years, most in 1981 with 20.
  • Mountain View: days with 50 mm (1.97 in) or more of precipitation in 27 years, most in 1981 with 7.
  • Mountain View: days with 100 mm (3.94 in) or more of precipitation in 11 years, most in 1927 with 2.
  • 4 fixed thresholds have at least one qualifying day at Mountain View.
31 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Mountain View Days per year at Mountain View with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 44 in 1924. 02040601924: 441925: 351926: 211927: 351928: 351929: 281930: 341931: 371932: 231933: 331934: 271935: 261936: 211937: 341938: 241941: 141942: 271943: 301944: 261978: 321979: 261980: 191981: 421982: 241983: 381984: 251985: 311986: 231987: 281988: 231989: 2219241928193219361942197919831987
Days per year at Mountain View with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 44 in 1924.
Days with 10 mm (0.39 in) or more of precipitation per year at Mountain View
YearDaysDecade average
19244433
19253533
19262133
19273533
19283533
19292833
19303428.8
19313728.8
19322328.8
19333328.8
19342728.8
19352628.8
19362128.8
19373428.8
19382428.8
19411424.3
19422724.3
19433024.3
19442624.3
19783229
19792629
19801927.5
19814227.5
19822427.5
19833827.5
19842527.5
19853127.5
19862327.5
19872827.5
19882327.5
19892227.5
First to last qualifying date each year at Mountain View For each year, a bar from the first to the last day at Mountain View meeting 10 mm (0.39 in). 1924: 7 January 1924 to 18 December 19241925: 5 January 1925 to 31 December 19251926: 4 January 1926 to 31 December 19261927: 4 January 1927 to 28 December 19271928: 10 January 1928 to 31 December 19281929: 11 January 1929 to 31 December 19291930: 23 January 1930 to 18 December 19301931: 9 January 1931 to 12 December 19311932: 4 January 1932 to 21 December 19321933: 14 January 1933 to 22 December 19331934: 4 January 1934 to 30 December 19341935: 6 January 1935 to 28 December 19351936: 10 January 1936 to 25 December 19361937: 13 January 1937 to 30 December 19371938: 19 January 1938 to 22 December 19381941: 14 January 1941 to 30 December 19411942: 14 January 1942 to 31 December 19421943: 7 January 1943 to 31 December 19431944: 2 January 1944 to 21 December 19441978: 6 January 1978 to 30 December 19781979: 19 January 1979 to 16 December 19791980: 27 January 1980 to 31 December 19801981: 2 January 1981 to 30 December 19811982: 6 January 1982 to 8 December 19821983: 1 January 1983 to 17 December 19831984: 2 January 1984 to 15 December 19841985: 8 January 1985 to 27 December 19851986: 7 January 1986 to 14 November 19861987: 3 January 1987 to 11 December 19871988: 5 January 1988 to 26 December 19881989: 19 January 1989 to 6 December 198919241928193219361942197919831987JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Mountain View meeting 10 mm (0.39 in).
First to last qualifying date each year at Mountain View
YearFirst dateLast date
19241924-01-071924-12-18
19251925-01-051925-12-31
19261926-01-041926-12-31
19271927-01-041927-12-28
19281928-01-101928-12-31
19291929-01-111929-12-31
19301930-01-231930-12-18
19311931-01-091931-12-12
19321932-01-041932-12-21
19331933-01-141933-12-22
19341934-01-041934-12-30
19351935-01-061935-12-28
19361936-01-101936-12-25
19371937-01-131937-12-30
19381938-01-191938-12-22
19411941-01-141941-12-30
19421942-01-141942-12-31
19431943-01-071943-12-31
19441944-01-021944-12-21
19781978-01-061978-12-30
19791979-01-191979-12-16
19801980-01-271980-12-31
19811981-01-021981-12-30
19821982-01-061982-12-08
19831983-01-011983-12-17
19841984-01-021984-12-15
19851985-01-081985-12-27
19861986-01-071986-11-14
19871987-01-031987-12-11
19881988-01-051988-12-26
19891989-01-191989-12-06

Every Fixed Threshold

Fixed thresholds at Mountain View
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3144192422
25 mm (0.98 in): Days with 25 mm or more rain312019819
50 mm (1.97 in): Days with 50 mm or more rain27719814
100 mm (3.94 in): Days with 100 mm or more rain11219271

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1924.

Download the Data

  • Data for Mountain View 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 2026-10-14 (14 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).