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Built 2026-10-15 (15 October 2026)

Sunnydale Threshold Days by Year

4 fixed thresholds counted per year at Sunnydale (ASN00008021): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Sunnydale Thresholds

  • Sunnydale: days with 10 mm (0.39 in) or more of precipitation in 47 years, most in 1963 with 18.
  • Sunnydale: days with 25 mm (0.98 in) or more of precipitation in 40 years, most in 1999 with 6.
  • Sunnydale: days with 50 mm (1.97 in) or more of precipitation in 9 years, most in 2000 with 4.
  • Sunnydale: days with 100 mm (3.94 in) or more of precipitation in 2 years, most in 1961 with 1.
  • 4 fixed thresholds have at least one qualifying day at Sunnydale.
47 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Sunnydale Days per year at Sunnydale with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 18 in 1963. 051015201959: 81960: 111961: 101962: 91963: 181964: 61965: 101966: 101967: 91968: 101969: 41970: 111971: 61972: 71973: 71974: 121975: 91976: 31977: 81978: 131979: 41980: 71981: 131982: 81983: 131984: 101985: 81986: 91987: 81988: 121989: 91990: 81991: 71992: 131993: 71994: 81995: 81996: 101997: 131998: 81999: 162000: 62001: 102002: 32003: 82004: 72005: 71959196419691974197919841989199419992004
Days per year at Sunnydale with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 18 in 1963.
Days with 10 mm (0.39 in) or more of precipitation per year at Sunnydale
YearDaysDecade average
195988
1960119.7
1961109.7
196299.7
1963189.7
196469.7
1965109.7
1966109.7
196799.7
1968109.7
196949.7
1970118
197168
197278
197378
1974128
197598
197638
197788
1978138
197948
198079.7
1981139.7
198289.7
1983139.7
1984109.7
198589.7
198699.7
198789.7
1988129.7
198999.7
199089.8
199179.8
1992139.8
199379.8
199489.8
199589.8
1996109.8
1997139.8
199889.8
1999169.8
200066.8
2001106.8
200236.8
200386.8
200476.8
200576.8
First to last qualifying date each year at Sunnydale For each year, a bar from the first to the last day at Sunnydale meeting 10 mm (0.39 in). 1959: 1 June 1959 to 19 August 19591960: 26 February 1960 to 12 September 19601961: 26 January 1961 to 31 August 19611962: 22 January 1962 to 21 December 19621963: 11 January 1963 to 25 November 19631964: 7 June 1964 to 15 July 19641965: 5 May 1965 to 23 October 19651966: 9 February 1966 to 6 November 19661967: 23 January 1967 to 27 July 19671968: 27 January 1968 to 25 June 19681969: 18 May 1969 to 2 September 19691970: 16 February 1970 to 29 December 19701971: 2 February 1971 to 15 August 19711972: 31 May 1972 to 27 July 19721973: 6 June 1973 to 8 September 19731974: 27 February 1974 to 12 August 19741975: 28 February 1975 to 15 October 19751976: 15 May 1976 to 29 August 19761977: 27 April 1977 to 26 December 19771978: 2 January 1978 to 18 December 19781979: 24 June 1979 to 19 August 19791980: 21 April 1980 to 26 August 19801981: 12 January 1981 to 15 August 19811982: 15 January 1982 to 12 October 19821983: 3 May 1983 to 17 November 19831984: 4 March 1984 to 4 July 19841985: 1 February 1985 to 19 August 19851986: 21 February 1986 to 5 October 19861987: 26 April 1987 to 21 December 19871988: 25 March 1988 to 28 December 19881989: 26 February 1989 to 11 July 19891990: 27 January 1990 to 6 October 19901991: 10 April 1991 to 24 December 19911992: 25 January 1992 to 2 October 19921993: 1 May 1993 to 14 November 19931994: 26 February 1994 to 11 September 19941995: 28 March 1995 to 4 September 19951996: 11 April 1996 to 7 November 19961997: 23 February 1997 to 11 December 19971998: 11 May 1998 to 6 December 19981999: 19 March 1999 to 29 December 19992000: 23 January 2000 to 6 September 20002001: 21 January 2001 to 16 November 20012002: 18 April 2002 to 27 December 20022003: 10 February 2003 to 22 August 20032004: 16 May 2004 to 24 September 20042005: 18 March 2005 to 24 August 200519591965197119771983198919952001JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Sunnydale meeting 10 mm (0.39 in).
First to last qualifying date each year at Sunnydale
YearFirst dateLast date
19591959-06-011959-08-19
19601960-02-261960-09-12
19611961-01-261961-08-31
19621962-01-221962-12-21
19631963-01-111963-11-25
19641964-06-071964-07-15
19651965-05-051965-10-23
19661966-02-091966-11-06
19671967-01-231967-07-27
19681968-01-271968-06-25
19691969-05-181969-09-02
19701970-02-161970-12-29
19711971-02-021971-08-15
19721972-05-311972-07-27
19731973-06-061973-09-08
19741974-02-271974-08-12
19751975-02-281975-10-15
19761976-05-151976-08-29
19771977-04-271977-12-26
19781978-01-021978-12-18
19791979-06-241979-08-19
19801980-04-211980-08-26
19811981-01-121981-08-15
19821982-01-151982-10-12
19831983-05-031983-11-17
19841984-03-041984-07-04
19851985-02-011985-08-19
19861986-02-211986-10-05
19871987-04-261987-12-21
19881988-03-251988-12-28
19891989-02-261989-07-11
19901990-01-271990-10-06
19911991-04-101991-12-24
19921992-01-251992-10-02
19931993-05-011993-11-14
19941994-02-261994-09-11
19951995-03-281995-09-04
19961996-04-111996-11-07
19971997-02-231997-12-11
19981998-05-111998-12-06
19991999-03-191999-12-29
20002000-01-232000-09-06
20012001-01-212001-11-16
20022002-04-182002-12-27
20032003-02-102003-08-22
20042004-05-162004-09-24
20052005-03-182005-08-24

Every Fixed Threshold

Fixed thresholds at Sunnydale
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain471819637
25 mm (0.98 in): Days with 25 mm or more rain40619992
50 mm (1.97 in): Days with 50 mm or more rain9420004
100 mm (3.94 in): Days with 100 mm or more rain2119611

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1959.

Download the Data

  • Data for Sunnydale 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 2026-10-13 (13 October 2026). Threshold counts are computed by this site.

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