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Built 2026-10-19 (19 October 2026)

Cahaba Pump House Threshold Days by Year (USC00011225)

4 fixed thresholds counted per year at Cahaba Pump House (USC00011225): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Cahaba Pump House Thresholds

  • Cahaba Pump House: days with 10 mm (0.39 in) or more of precipitation in 39 years, most in 2020 with 57.
  • Cahaba Pump House: days with 25 mm (0.98 in) or more of precipitation in 39 years, most in 1982 with 27.
  • Cahaba Pump House: days with 50 mm (1.97 in) or more of precipitation in 39 years, most in 1983 with 12.
  • Cahaba Pump House: days with 100 mm (3.94 in) or more of precipitation in 15 years, most in 1983 with 3.
  • 4 fixed thresholds have at least one qualifying day at Cahaba Pump House.
39 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Cahaba Pump House Days per year at Cahaba Pump House with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 57 in 2020. 02040601982: 511983: 461984: 491985: 421986: 361987: 381988: 351989: 531990: 441991: 351992: 421993: 311994: 371995: 361996: 341997: 541998: 341999: 382000: 232001: 422002: 522003: 472004: 472005: 482006: 502007: 272010: 332011: 392012: 502014: 362015: 492016: 282017: 472018: 472019: 462020: 572021: 572022: 332026: 41982198619901994199820022006201220172021
Days per year at Cahaba Pump House with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 57 in 2020.
Days with 10 mm (0.39 in) or more of precipitation per year at Cahaba Pump House
YearDaysDecade average
19825143.8
19834643.8
19844943.8
19854243.8
19863643.8
19873843.8
19883543.8
19895343.8
19904438.5
19913538.5
19924238.5
19933138.5
19943738.5
19953638.5
19963438.5
19975438.5
19983438.5
19993838.5
20002342
20014242
20025242
20034742
20044742
20054842
20065042
20072742
20103341.7
20113941.7
20125041.7
20143641.7
20154941.7
20162841.7
20174741.7
20184741.7
20194641.7
20205737.8
20215737.8
20223337.8
2026437.8
First to last qualifying date each year at Cahaba Pump House For each year, a bar from the first to the last day at Cahaba Pump House meeting 10 mm (0.39 in). 1982: 1 January 1982 to 27 December 19821983: 1 January 1983 to 27 December 19831984: 9 January 1984 to 31 December 19841985: 1 January 1985 to 31 December 19851986: 25 January 1986 to 29 November 19861987: 14 January 1987 to 26 December 19871988: 17 January 1988 to 31 December 19881989: 9 January 1989 to 30 December 19891990: 5 January 1990 to 28 December 19901991: 11 January 1991 to 3 December 19911992: 23 January 1992 to 26 December 19921993: 5 January 1993 to 10 December 19931994: 2 January 1994 to 30 December 19941995: 7 January 1995 to 19 December 19951996: 12 January 1996 to 27 December 19961997: 8 January 1997 to 29 December 19971998: 6 January 1998 to 24 December 19981999: 3 January 1999 to 22 December 19992000: 23 January 2000 to 21 December 20002001: 8 January 2001 to 13 December 20012002: 6 January 2002 to 24 December 20022003: 1 January 2003 to 30 December 20032004: 5 January 2004 to 23 December 20042005: 8 January 2005 to 25 December 20052006: 11 January 2006 to 31 December 20062007: 1 January 2007 to 30 December 20072010: 21 January 2010 to 17 December 20102011: 1 January 2011 to 27 December 20112012: 11 January 2012 to 29 December 20122014: 11 January 2014 to 28 December 20142015: 2 January 2015 to 30 December 20152016: 15 January 2016 to 6 December 20162017: 3 January 2017 to 21 December 20172018: 4 February 2018 to 21 December 20182019: 1 January 2019 to 24 December 20192020: 3 January 2020 to 24 December 20202021: 1 January 2021 to 30 December 20212022: 10 January 2022 to 30 November 20222026: 26 January 2026 to 12 March 202619821987199219972002200720152020JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Cahaba Pump House meeting 10 mm (0.39 in).
First to last qualifying date each year at Cahaba Pump House
YearFirst dateLast date
19821982-01-011982-12-27
19831983-01-011983-12-27
19841984-01-091984-12-31
19851985-01-011985-12-31
19861986-01-251986-11-29
19871987-01-141987-12-26
19881988-01-171988-12-31
19891989-01-091989-12-30
19901990-01-051990-12-28
19911991-01-111991-12-03
19921992-01-231992-12-26
19931993-01-051993-12-10
19941994-01-021994-12-30
19951995-01-071995-12-19
19961996-01-121996-12-27
19971997-01-081997-12-29
19981998-01-061998-12-24
19991999-01-031999-12-22
20002000-01-232000-12-21
20012001-01-082001-12-13
20022002-01-062002-12-24
20032003-01-012003-12-30
20042004-01-052004-12-23
20052005-01-082005-12-25
20062006-01-112006-12-31
20072007-01-012007-12-30
20102010-01-212010-12-17
20112011-01-012011-12-27
20122012-01-112012-12-29
20142014-01-112014-12-28
20152015-01-022015-12-30
20162016-01-152016-12-06
20172017-01-032017-12-21
20182018-02-042018-12-21
20192019-01-012019-12-24
20202020-01-032020-12-24
20212021-01-012021-12-30
20222022-01-102022-11-30
20262026-01-262026-03-12

Every Fixed Threshold

Fixed thresholds at Cahaba Pump House
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain395720204
25 mm (0.98 in): Days with 25 mm or more rain392719822
50 mm (1.97 in): Days with 50 mm or more rain391219831
100 mm (3.94 in): Days with 100 mm or more rain15319832

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1982.

Download the Data

  • Data for Cahaba Pump House 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).