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Built 2026-10-19 (19 October 2026)

Black Swamp (Maxwell) Threshold Days by Year (ASN00056202)

4 fixed thresholds counted per year at Black Swamp (Maxwell) (ASN00056202): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Black Swamp (Maxwell) Thresholds

  • Black Swamp (Maxwell): days with 10 mm (0.39 in) or more of precipitation in 40 years, most in 1988 with 43.
  • Black Swamp (Maxwell): days with 25 mm (0.98 in) or more of precipitation in 40 years, most in 2025 with 17.
  • Black Swamp (Maxwell): days with 50 mm (1.97 in) or more of precipitation in 28 years, most in 1988 with 4.
  • Black Swamp (Maxwell): days with 100 mm (3.94 in) or more of precipitation in 6 years, most in 1980 with 1.
  • 4 fixed thresholds have at least one qualifying day at Black Swamp (Maxwell).
40 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Black Swamp (Maxwell) Days per year at Black Swamp (Maxwell) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 43 in 1988. 02040601978: 331979: 211980: 151981: 311982: 221983: 421984: 301985: 271986: 241987: 311988: 431990: 241991: 241992: 221993: 181994: 211995: 291996: 331997: 272000: 202001: 282002: 122004: 302005: 152006: 242007: 242008: 272009: 242011: 202012: 252013: 282014: 182015: 262016: 182017: 272019: 142022: 402023: 182025: 402026: 71978198219861991199520012006201120152022
Days per year at Black Swamp (Maxwell) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 43 in 1988.
Days with 10 mm (0.39 in) or more of precipitation per year at Black Swamp (Maxwell)
YearDaysDecade average
19783327
19792127
19801529.4
19813129.4
19822229.4
19834229.4
19843029.4
19852729.4
19862429.4
19873129.4
19884329.4
19902424.8
19912424.8
19922224.8
19931824.8
19942124.8
19952924.8
19963324.8
19972724.8
20002022.7
20012822.7
20021222.7
20043022.7
20051522.7
20062422.7
20072422.7
20082722.7
20092422.7
20112022
20122522
20132822
20141822
20152622
20161822
20172722
20191422
20224026.3
20231826.3
20254026.3
2026726.3
First to last qualifying date each year at Black Swamp (Maxwell) For each year, a bar from the first to the last day at Black Swamp (Maxwell) meeting 10 mm (0.39 in). 1978: 3 January 1978 to 27 December 19781979: 18 January 1979 to 25 November 19791980: 28 January 1980 to 31 December 19801981: 1 January 1981 to 16 December 19811982: 15 January 1982 to 30 December 19821983: 2 January 1983 to 28 December 19831984: 9 January 1984 to 30 December 19841985: 9 January 1985 to 15 December 19851986: 5 January 1986 to 25 December 19861987: 3 January 1987 to 24 December 19871988: 3 January 1988 to 28 December 19881990: 16 January 1990 to 30 December 19901991: 6 January 1991 to 29 December 19911992: 8 January 1992 to 26 December 19921993: 5 January 1993 to 9 December 19931994: 15 January 1994 to 26 December 19941995: 4 January 1995 to 29 December 19951996: 3 January 1996 to 31 December 19961997: 18 January 1997 to 24 December 19972000: 10 January 2000 to 16 December 20002001: 27 January 2001 to 27 November 20012002: 3 February 2002 to 16 November 20022004: 11 January 2004 to 28 December 20042005: 25 January 2005 to 9 December 20052006: 6 January 2006 to 28 November 20062007: 4 January 2007 to 13 December 20072008: 1 January 2008 to 28 December 20082009: 14 February 2009 to 30 December 20092011: 6 January 2011 to 11 December 20112012: 5 January 2012 to 27 December 20122013: 13 January 2013 to 17 December 20132014: 21 January 2014 to 28 December 20142015: 22 January 2015 to 23 December 20152016: 6 January 2016 to 13 November 20162017: 2 January 2017 to 26 December 20172019: 3 March 2019 to 25 December 20192022: 6 January 2022 to 13 December 20222023: 5 January 2023 to 21 December 20232025: 8 January 2025 to 23 December 20252026: 5 January 2026 to 29 May 202619781983198819942001200720132019JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Black Swamp (Maxwell) meeting 10 mm (0.39 in).
First to last qualifying date each year at Black Swamp (Maxwell)
YearFirst dateLast date
19781978-01-031978-12-27
19791979-01-181979-11-25
19801980-01-281980-12-31
19811981-01-011981-12-16
19821982-01-151982-12-30
19831983-01-021983-12-28
19841984-01-091984-12-30
19851985-01-091985-12-15
19861986-01-051986-12-25
19871987-01-031987-12-24
19881988-01-031988-12-28
19901990-01-161990-12-30
19911991-01-061991-12-29
19921992-01-081992-12-26
19931993-01-051993-12-09
19941994-01-151994-12-26
19951995-01-041995-12-29
19961996-01-031996-12-31
19971997-01-181997-12-24
20002000-01-102000-12-16
20012001-01-272001-11-27
20022002-02-032002-11-16
20042004-01-112004-12-28
20052005-01-252005-12-09
20062006-01-062006-11-28
20072007-01-042007-12-13
20082008-01-012008-12-28
20092009-02-142009-12-30
20112011-01-062011-12-11
20122012-01-052012-12-27
20132013-01-132013-12-17
20142014-01-212014-12-28
20152015-01-222015-12-23
20162016-01-062016-11-13
20172017-01-022017-12-26
20192019-03-032019-12-25
20222022-01-062022-12-13
20232023-01-052023-12-21
20252025-01-082025-12-23
20262026-01-052026-05-29

Every Fixed Threshold

Fixed thresholds at Black Swamp (Maxwell)
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain404319887
25 mm (0.98 in): Days with 25 mm or more rain401720251
50 mm (1.97 in): Days with 50 mm or more rain28419882
100 mm (3.94 in): Days with 100 mm or more rain6119801

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1978.

Download the Data

  • Data for Black Swamp (Maxwell) 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 (2026-10-12).