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Data as of 2025-12-31
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Built 2026-10-18 (18 October 2026)

Alderley Station Threshold Days by Year

5 fixed thresholds counted per year at Alderley Station (ASN00037109): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Alderley Station Thresholds

  • Alderley Station: days with 10 mm (0.39 in) or more of precipitation in 21 years, most in 1920 with 24.
  • Alderley Station: days with 25 mm (0.98 in) or more of precipitation in 20 years, most in 2000 with 12.
  • Alderley Station: days with 50 mm (1.97 in) or more of precipitation in 10 years, most in 2000 with 8.
  • Alderley Station: days with 100 mm (3.94 in) or more of precipitation in 3 years, most in 2000 with 1.
  • 5 fixed thresholds have at least one qualifying day at Alderley Station.
21 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Alderley Station Days per year at Alderley Station with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 24 in 1920. 01020301920: 241988: 51990: 51992: 81993: 71994: 51995: 141996: 61997: 101998: 161999: 62000: 212016: 182018: 62019: 72020: 82021: 52022: 122023: 82024: 82025: 41920199219951998201620202023
Days per year at Alderley Station with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 24 in 1920.
Days with 10 mm (0.39 in) or more of precipitation per year at Alderley Station
YearDaysDecade average
19202424
198855
199058.6
199288.6
199378.6
199458.6
1995148.6
199668.6
1997108.6
1998168.6
199968.6
20002121
20161810.3
2018610.3
2019710.3
202087.5
202157.5
2022127.5
202387.5
202487.5
202547.5
First to last qualifying date each year at Alderley Station For each year, a bar from the first to the last day at Alderley Station meeting 10 mm (0.39 in). 1920: 12 January 1920 to 6 December 19201988: 17 May 1988 to 27 December 19881990: 11 January 1990 to 23 November 19901992: 26 January 1992 to 17 November 19921993: 29 January 1993 to 10 December 19931994: 11 February 1994 to 22 December 19941995: 16 January 1995 to 29 December 19951996: 6 January 1996 to 4 November 19961997: 19 January 1997 to 13 December 19971998: 8 January 1998 to 30 December 19981999: 8 March 1999 to 24 December 19992000: 14 January 2000 to 23 December 20002016: 1 January 2016 to 28 December 20162018: 12 January 2018 to 21 November 20182019: 1 February 2019 to 3 May 20192020: 25 January 2020 to 22 December 20202021: 11 February 2021 to 11 November 20212022: 20 January 2022 to 24 December 20222023: 5 January 2023 to 3 July 20232024: 10 January 2024 to 29 November 20242025: 4 February 2025 to 24 March 20251920199219951998201620202023JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Alderley Station meeting 10 mm (0.39 in).
First to last qualifying date each year at Alderley Station
YearFirst dateLast date
19201920-01-121920-12-06
19881988-05-171988-12-27
19901990-01-111990-11-23
19921992-01-261992-11-17
19931993-01-291993-12-10
19941994-02-111994-12-22
19951995-01-161995-12-29
19961996-01-061996-11-04
19971997-01-191997-12-13
19981998-01-081998-12-30
19991999-03-081999-12-24
20002000-01-142000-12-23
20162016-01-012016-12-28
20182018-01-122018-11-21
20192019-02-012019-05-03
20202020-01-252020-12-22
20212021-02-112021-11-11
20222022-01-202022-12-24
20232023-01-052023-07-03
20242024-01-102024-11-29
20252025-02-042025-03-24

Every Fixed Threshold

Fixed thresholds at Alderley Station
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain212419204
25 mm (0.98 in): Days with 25 mm or more rain201220003
50 mm (1.97 in): Days with 50 mm or more rain10820002
100 mm (3.94 in): Days with 100 mm or more rain3120001
200 mm (7.87 in): Days with 200 mm or more rain1120251

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1920.

Download the Data

  • Data for Alderley Station 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).