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Built 2026-10-19 (19 October 2026)

Knowsley Threshold Days by Year (ASN00081118)

4 fixed thresholds counted per year at Knowsley (ASN00081118): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Knowsley Thresholds

  • Knowsley: days with 10 mm (0.39 in) or more of precipitation in 36 years, most in 2022 with 29.
  • Knowsley: days with 25 mm (0.98 in) or more of precipitation in 33 years, most in 1992 with 7.
  • Knowsley: days with 50 mm (1.97 in) or more of precipitation in 14 years, most in 2010 with 2.
  • Knowsley: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 2024 with 1.
  • 4 fixed thresholds have at least one qualifying day at Knowsley.
36 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Knowsley Days per year at Knowsley with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 29 in 2022. 01020301984: 141985: 201986: 201987: 211988: 231989: 141990: 141991: 151992: 201993: 251994: 41995: 191996: 181997: 151998: 171999: 182000: 152001: 122003: 162004: 132005: 122006: 122007: 112008: 92009: 132010: 282015: 112016: 262018: 142019: 82020: 192021: 182022: 292023: 142024: 172025: 1198419881992199620002005200920182022
Days per year at Knowsley with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 29 in 2022.
Days with 10 mm (0.39 in) or more of precipitation per year at Knowsley
YearDaysDecade average
19841418.7
19852018.7
19862018.7
19872118.7
19882318.7
19891418.7
19901416.5
19911516.5
19922016.5
19932516.5
1994416.5
19951916.5
19961816.5
19971516.5
19981716.5
19991816.5
20001512.6
20011212.6
20031612.6
20041312.6
20051212.6
20061212.6
20071112.6
2008912.6
20091312.6
20102817.4
20151117.4
20162617.4
20181417.4
2019817.4
20201916.3
20211816.3
20222916.3
20231416.3
20241716.3
2025116.3
First to last qualifying date each year at Knowsley For each year, a bar from the first to the last day at Knowsley meeting 10 mm (0.39 in). 1984: 14 January 1984 to 2 November 19841985: 31 January 1985 to 11 December 19851986: 16 January 1986 to 17 December 19861987: 4 January 1987 to 28 December 19871988: 1 January 1988 to 19 December 19881989: 4 January 1989 to 18 December 19891990: 1 February 1990 to 10 December 19901991: 5 January 1991 to 31 December 19911992: 3 March 1992 to 26 December 19921993: 17 January 1993 to 22 December 19931994: 11 February 1994 to 9 March 19941995: 16 January 1995 to 23 October 19951996: 1 January 1996 to 26 December 19961997: 28 January 1997 to 14 November 19971998: 13 January 1998 to 26 December 19981999: 30 January 1999 to 28 December 19992000: 27 January 2000 to 23 December 20002001: 25 January 2001 to 13 November 20012003: 1 January 2003 to 22 December 20032004: 24 May 2004 to 11 December 20042005: 3 February 2005 to 7 December 20052006: 22 January 2006 to 7 September 20062007: 21 January 2007 to 22 December 20072008: 20 January 2008 to 14 December 20082009: 12 March 2009 to 29 November 20092010: 1 January 2010 to 9 December 20102015: 10 January 2015 to 26 December 20152016: 4 January 2016 to 30 December 20162018: 27 January 2018 to 14 December 20182019: 3 May 2019 to 3 November 20192020: 23 January 2020 to 6 December 20202021: 30 January 2021 to 13 November 20212022: 27 January 2022 to 13 December 20222023: 2 January 2023 to 27 December 20232024: 3 January 2024 to 7 December 20242025: 26 April 2025 to 26 April 202519841989199419992005201020202025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Knowsley meeting 10 mm (0.39 in).
First to last qualifying date each year at Knowsley
YearFirst dateLast date
19841984-01-141984-11-02
19851985-01-311985-12-11
19861986-01-161986-12-17
19871987-01-041987-12-28
19881988-01-011988-12-19
19891989-01-041989-12-18
19901990-02-011990-12-10
19911991-01-051991-12-31
19921992-03-031992-12-26
19931993-01-171993-12-22
19941994-02-111994-03-09
19951995-01-161995-10-23
19961996-01-011996-12-26
19971997-01-281997-11-14
19981998-01-131998-12-26
19991999-01-301999-12-28
20002000-01-272000-12-23
20012001-01-252001-11-13
20032003-01-012003-12-22
20042004-05-242004-12-11
20052005-02-032005-12-07
20062006-01-222006-09-07
20072007-01-212007-12-22
20082008-01-202008-12-14
20092009-03-122009-11-29
20102010-01-012010-12-09
20152015-01-102015-12-26
20162016-01-042016-12-30
20182018-01-272018-12-14
20192019-05-032019-11-03
20202020-01-232020-12-06
20212021-01-302021-11-13
20222022-01-272022-12-13
20232023-01-022023-12-27
20242024-01-032024-12-07
20252025-04-262025-04-26

Every Fixed Threshold

Fixed thresholds at Knowsley
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain362920221
25 mm (0.98 in): Days with 25 mm or more rain33719921
50 mm (1.97 in): Days with 50 mm or more rain14220102
100 mm (3.94 in): Days with 100 mm or more rain1120241

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1984.

Download the Data

  • Data for Knowsley 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).