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Data as of 2025-12-31
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Built 2026-10-17 (17 October 2026)

Delamere Threshold Days by Year

5 fixed thresholds counted per year at Delamere (ASN00014839): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Delamere Thresholds

  • Delamere: days with 10 mm (0.39 in) or more of precipitation in 19 years, most in 1974 with 39.
  • Delamere: days with 25 mm (0.98 in) or more of precipitation in 19 years, most in 1974 with 24.
  • Delamere: days with 50 mm (1.97 in) or more of precipitation in 17 years, most in 1974 with 8.
  • Delamere: days with 100 mm (3.94 in) or more of precipitation in 5 years, most in 2000 with 2.
  • 5 fixed thresholds have at least one qualifying day at Delamere.
19 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Delamere Days per year at Delamere with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 39 in 1974. 0102030401972: 241973: 211974: 391975: 211976: 341977: 311983: 201984: 361985: 261986: 191987: 371988: 241989: 301999: 322000: 372001: 342018: 222019: 162020: 301972197419761983198519871989200020182020
Days per year at Delamere with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 39 in 1974.
Days with 10 mm (0.39 in) or more of precipitation per year at Delamere
YearDaysDecade average
19722428.3
19732128.3
19743928.3
19752128.3
19763428.3
19773128.3
19832027.4
19843627.4
19852627.4
19861927.4
19873727.4
19882427.4
19893027.4
19993232
20003735.5
20013435.5
20182219
20191619
20203030
First to last qualifying date each year at Delamere For each year, a bar from the first to the last day at Delamere meeting 10 mm (0.39 in). 1972: 8 January 1972 to 30 December 19721973: 1 January 1973 to 29 December 19731974: 3 January 1974 to 24 December 19741975: 8 January 1975 to 27 December 19751976: 3 January 1976 to 17 December 19761977: 1 January 1977 to 16 December 19771983: 1 January 1983 to 26 December 19831984: 2 January 1984 to 25 December 19841985: 1 January 1985 to 30 December 19851986: 2 January 1986 to 19 December 19861987: 2 January 1987 to 30 December 19871988: 2 January 1988 to 30 December 19881989: 5 January 1989 to 21 December 19891999: 4 January 1999 to 28 December 19992000: 1 January 2000 to 25 December 20002001: 5 January 2001 to 29 December 20012018: 3 January 2018 to 28 December 20182019: 1 January 2019 to 29 December 20192020: 1 January 2020 to 31 December 20201972197519831986198920012020JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Delamere meeting 10 mm (0.39 in).
First to last qualifying date each year at Delamere
YearFirst dateLast date
19721972-01-081972-12-30
19731973-01-011973-12-29
19741974-01-031974-12-24
19751975-01-081975-12-27
19761976-01-031976-12-17
19771977-01-011977-12-16
19831983-01-011983-12-26
19841984-01-021984-12-25
19851985-01-011985-12-30
19861986-01-021986-12-19
19871987-01-021987-12-30
19881988-01-021988-12-30
19891989-01-051989-12-21
19991999-01-041999-12-28
20002000-01-012000-12-25
20012001-01-052001-12-29
20182018-01-032018-12-28
20192019-01-012019-12-29
20202020-01-012020-12-31

Every Fixed Threshold

Fixed thresholds at Delamere
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain1939197430
25 mm (0.98 in): Days with 25 mm or more rain1924197411
50 mm (1.97 in): Days with 50 mm or more rain17819742
100 mm (3.94 in): Days with 100 mm or more rain5220002
200 mm (7.87 in): Days with 200 mm or more rain1119741

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1972.

Download the Data

  • Data for Delamere 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 2026-10-14 (14 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).