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

Viwa Threshold Days by Year (FJM00091670)

13 fixed thresholds counted per year at Viwa (FJM00091670): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Viwa Thresholds

  • Viwa: days with 10 mm (0.39 in) or more of precipitation in 37 years, most in 1996 with 65.
  • Viwa: days with 25 mm (0.98 in) or more of precipitation in 37 years, most in 1996 with 37.
  • Viwa: days with 50 mm (1.97 in) or more of precipitation in 36 years, most in 1989 with 13.
  • Viwa: days with 100 mm (3.94 in) or more of precipitation in 28 years, most in 1996 with 4.
  • 13 fixed thresholds have at least one qualifying day at Viwa.
37 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Viwa Days per year at Viwa with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 65 in 1996. 0204060801980: 461981: 351982: 491983: 321984: 341986: 391987: 181988: 521989: 521990: 451991: 491992: 311993: 311994: 321995: 341996: 651997: 401998: 222003: 272004: 412005: 432006: 382007: 552008: 642009: 552010: 312011: 472012: 522013: 442014: 262017: 402018: 492019: 522020: 342021: 512022: 302025: 321980198419891993199720052009201320192025
Days per year at Viwa with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 65 in 1996.
Days with 10 mm (0.39 in) or more of precipitation per year at Viwa
YearDaysDecade average
19804639.7
19813539.7
19824939.7
19833239.7
19843439.7
19863939.7
19871839.7
19885239.7
19895239.7
19904538.8
19914938.8
19923138.8
19933138.8
19943238.8
19953438.8
19966538.8
19974038.8
19982238.8
20032746.1
20044146.1
20054346.1
20063846.1
20075546.1
20086446.1
20095546.1
20103142.6
20114742.6
20125242.6
20134442.6
20142642.6
20174042.6
20184942.6
20195242.6
20203436.8
20215136.8
20223036.8
20253236.8
First to last qualifying date each year at Viwa For each year, a bar from the first to the last day at Viwa meeting 10 mm (0.39 in). 1980: 3 January 1980 to 24 December 19801981: 13 January 1981 to 28 December 19811982: 6 January 1982 to 27 November 19821983: 25 January 1983 to 27 December 19831984: 26 January 1984 to 4 December 19841986: 17 January 1986 to 18 December 19861987: 6 February 1987 to 23 December 19871988: 1 January 1988 to 31 December 19881989: 4 January 1989 to 24 December 19891990: 4 January 1990 to 28 December 19901991: 1 January 1991 to 31 December 19911992: 7 January 1992 to 31 December 19921993: 1 January 1993 to 31 December 19931994: 2 January 1994 to 25 November 19941995: 1 January 1995 to 2 October 19951996: 2 January 1996 to 27 December 19961997: 13 January 1997 to 19 December 19971998: 1 January 1998 to 20 December 19982003: 11 January 2003 to 28 December 20032004: 13 January 2004 to 18 December 20042005: 4 January 2005 to 30 December 20052006: 2 January 2006 to 19 December 20062007: 7 January 2007 to 30 December 20072008: 2 January 2008 to 30 December 20082009: 2 January 2009 to 14 December 20092010: 28 February 2010 to 24 December 20102011: 16 February 2011 to 30 December 20112012: 3 January 2012 to 30 December 20122013: 6 January 2013 to 19 December 20132014: 15 January 2014 to 12 December 20142017: 2 January 2017 to 30 December 20172018: 10 January 2018 to 31 December 20182019: 10 January 2019 to 27 December 20192020: 2 February 2020 to 28 December 20202021: 1 January 2021 to 26 November 20212022: 27 April 2022 to 31 December 20222025: 1 January 2025 to 30 December 202519801986199119962005201020172022JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Viwa meeting 10 mm (0.39 in).
First to last qualifying date each year at Viwa
YearFirst dateLast date
19801980-01-031980-12-24
19811981-01-131981-12-28
19821982-01-061982-11-27
19831983-01-251983-12-27
19841984-01-261984-12-04
19861986-01-171986-12-18
19871987-02-061987-12-23
19881988-01-011988-12-31
19891989-01-041989-12-24
19901990-01-041990-12-28
19911991-01-011991-12-31
19921992-01-071992-12-31
19931993-01-011993-12-31
19941994-01-021994-11-25
19951995-01-011995-10-02
19961996-01-021996-12-27
19971997-01-131997-12-19
19981998-01-011998-12-20
20032003-01-112003-12-28
20042004-01-132004-12-18
20052005-01-042005-12-30
20062006-01-022006-12-19
20072007-01-072007-12-30
20082008-01-022008-12-30
20092009-01-022009-12-14
20102010-02-282010-12-24
20112011-02-162011-12-30
20122012-01-032012-12-30
20132013-01-062013-12-19
20142014-01-152014-12-12
20172017-01-022017-12-30
20182018-01-102018-12-31
20192019-01-102019-12-27
20202020-02-022020-12-28
20212021-01-012021-11-26
20222022-04-272022-12-31
20252025-01-012025-12-30

Every Fixed Threshold

Fixed thresholds at Viwa
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days10n/a93
90 F (32.2 C): Days10n/a24
0 C (32 F): Frost days (min10n/a18
-10 C (14 F): Days with min10n/a18
-20 C (-4 F): Days with min10n/a18
-30 C (-22 F): Days with min10n/a18
20 C (68 F): Tropical nights (min10n/a143
25 C (77 F): Days with min10n/a36
10 mm (0.39 in): Days with 10 mm or more rain3765199632
25 mm (0.98 in): Days with 25 mm or more rain3737199612
50 mm (1.97 in): Days with 50 mm or more rain361319894
100 mm (3.94 in): Days with 100 mm or more rain28419961
200 mm (7.87 in): Days with 200 mm or more rain2120091

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2025.

Download the Data

  • Data for Viwa 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).