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Built 2026-10-19 (19 October 2026)

Swanara Threshold Days by Year (ASN00010904)

4 fixed thresholds counted per year at Swanara (ASN00010904): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Swanara Thresholds

  • Swanara: days with 10 mm (0.39 in) or more of precipitation in 63 years, most in 1999 with 19.
  • Swanara: days with 25 mm (0.98 in) or more of precipitation in 44 years, most in 1990 with 5.
  • Swanara: days with 50 mm (1.97 in) or more of precipitation in 10 years, most in 2011 with 2.
  • Swanara: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1978 with 1.
  • 4 fixed thresholds have at least one qualifying day at Swanara.
63 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Swanara Days per year at Swanara with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 19 in 1999. 051015201957: 131961: 71962: 91963: 161965: 111966: 101967: 91968: 91969: 71971: 61972: 41973: 101974: 91975: 51976: 71977: 41978: 111979: 41980: 31981: 81982: 41983: 111984: 131985: 81986: 51987: 91988: 71989: 61990: 71991: 41992: 141993: 81994: 81995: 141996: 91997: 81998: 61999: 192002: 22003: 102004: 62005: 82006: 122007: 42008: 122009: 52010: 42011: 92012: 102013: 112014: 72015: 82016: 162017: 122018: 72019: 52020: 72021: 92022: 122023: 72024: 62025: 62026: 8195719681976198319901997200620132020
Days per year at Swanara with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 19 in 1999.
Days with 10 mm (0.39 in) or more of precipitation per year at Swanara
YearDaysDecade average
19571313
196179.8
196299.8
1963169.8
1965119.8
1966109.8
196799.8
196899.8
196979.8
197166.7
197246.7
1973106.7
197496.7
197556.7
197676.7
197746.7
1978116.7
197946.7
198037.4
198187.4
198247.4
1983117.4
1984137.4
198587.4
198657.4
198797.4
198877.4
198967.4
199079.7
199149.7
1992149.7
199389.7
199489.7
1995149.7
199699.7
199789.7
199869.7
1999199.7
200227.4
2003107.4
200467.4
200587.4
2006127.4
200747.4
2008127.4
200957.4
201048.9
201198.9
2012108.9
2013118.9
201478.9
201588.9
2016168.9
2017128.9
201878.9
201958.9
202077.9
202197.9
2022127.9
202377.9
202467.9
202567.9
202687.9
First to last qualifying date each year at Swanara For each year, a bar from the first to the last day at Swanara meeting 10 mm (0.39 in). 1957: 18 January 1957 to 16 August 19571961: 17 February 1961 to 27 August 19611962: 13 May 1962 to 29 December 19621963: 8 February 1963 to 28 August 19631965: 19 April 1965 to 23 October 19651966: 5 March 1966 to 23 October 19661967: 23 January 1967 to 30 October 19671968: 27 January 1968 to 10 September 19681969: 8 April 1969 to 4 November 19691971: 13 March 1971 to 20 October 19711972: 31 May 1972 to 16 August 19721973: 5 June 1973 to 13 November 19731974: 7 March 1974 to 5 August 19741975: 2 June 1975 to 24 August 19751976: 12 May 1976 to 7 November 19761977: 15 May 1977 to 28 December 19771978: 2 January 1978 to 20 December 19781979: 12 February 1979 to 21 May 19791980: 25 February 1980 to 27 July 19801981: 19 April 1981 to 6 November 19811982: 8 June 1982 to 15 September 19821983: 18 June 1983 to 27 December 19831984: 22 February 1984 to 22 August 19841985: 5 February 1985 to 20 November 19851986: 14 May 1986 to 9 November 19861987: 26 April 1987 to 24 December 19871988: 27 April 1988 to 12 August 19881989: 26 February 1989 to 14 June 19891990: 29 January 1990 to 10 September 19901991: 4 May 1991 to 5 November 19911992: 9 February 1992 to 10 December 19921993: 29 April 1993 to 25 August 19931994: 24 May 1994 to 11 August 19941995: 27 February 1995 to 24 December 19951996: 15 March 1996 to 15 November 19961997: 23 February 1997 to 13 November 19971998: 16 April 1998 to 29 August 19981999: 6 January 1999 to 16 November 19992002: 15 January 2002 to 16 April 20022003: 17 February 2003 to 6 December 20032004: 18 February 2004 to 21 October 20042005: 28 March 2005 to 18 August 20052006: 13 January 2006 to 9 September 20062007: 4 January 2007 to 17 December 20072008: 4 February 2008 to 26 November 20082009: 1 February 2009 to 13 November 20092010: 22 March 2010 to 13 August 20102011: 7 January 2011 to 31 December 20112012: 25 March 2012 to 6 December 20122013: 14 January 2013 to 8 December 20132014: 27 April 2014 to 28 November 20142015: 15 March 2015 to 7 November 20152016: 10 January 2016 to 24 December 20162017: 31 January 2017 to 14 October 20172018: 16 January 2018 to 29 August 20182019: 11 June 2019 to 30 August 20192020: 28 February 2020 to 6 November 20202021: 7 February 2021 to 27 October 20212022: 12 February 2022 to 24 October 20222023: 27 March 2023 to 14 September 20232024: 25 February 2024 to 30 July 20242025: 23 January 2025 to 6 September 20252026: 10 February 2026 to 27 August 202619571969197819861994200420122020JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Swanara meeting 10 mm (0.39 in).
First to last qualifying date each year at Swanara
YearFirst dateLast date
19571957-01-181957-08-16
19611961-02-171961-08-27
19621962-05-131962-12-29
19631963-02-081963-08-28
19651965-04-191965-10-23
19661966-03-051966-10-23
19671967-01-231967-10-30
19681968-01-271968-09-10
19691969-04-081969-11-04
19711971-03-131971-10-20
19721972-05-311972-08-16
19731973-06-051973-11-13
19741974-03-071974-08-05
19751975-06-021975-08-24
19761976-05-121976-11-07
19771977-05-151977-12-28
19781978-01-021978-12-20
19791979-02-121979-05-21
19801980-02-251980-07-27
19811981-04-191981-11-06
19821982-06-081982-09-15
19831983-06-181983-12-27
19841984-02-221984-08-22
19851985-02-051985-11-20
19861986-05-141986-11-09
19871987-04-261987-12-24
19881988-04-271988-08-12
19891989-02-261989-06-14
19901990-01-291990-09-10
19911991-05-041991-11-05
19921992-02-091992-12-10
19931993-04-291993-08-25
19941994-05-241994-08-11
19951995-02-271995-12-24
19961996-03-151996-11-15
19971997-02-231997-11-13
19981998-04-161998-08-29
19991999-01-061999-11-16
20022002-01-152002-04-16
20032003-02-172003-12-06
20042004-02-182004-10-21
20052005-03-282005-08-18
20062006-01-132006-09-09
20072007-01-042007-12-17
20082008-02-042008-11-26
20092009-02-012009-11-13
20102010-03-222010-08-13
20112011-01-072011-12-31
20122012-03-252012-12-06
20132013-01-142013-12-08
20142014-04-272014-11-28
20152015-03-152015-11-07
20162016-01-102016-12-24
20172017-01-312017-10-14
20182018-01-162018-08-29
20192019-06-112019-08-30
20202020-02-282020-11-06
20212021-02-072021-10-27
20222022-02-122022-10-24
20232023-03-272023-09-14
20242024-02-252024-07-30
20252025-01-232025-09-06
20262026-02-102026-08-27

Every Fixed Threshold

Fixed thresholds at Swanara
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain631919998
25 mm (0.98 in): Days with 25 mm or more rain44519901
50 mm (1.97 in): Days with 50 mm or more rain10220111
100 mm (3.94 in): Days with 100 mm or more rain1119781

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1957.

Download the Data

  • Data for Swanara 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 (2026-10-17).