Daily records
Page built 2026-10-18
Data as of 2025-12-31
Search
Built 2026-10-18 (18 October 2026)

Hazelmere Threshold Days by Year

5 fixed thresholds counted per year at Hazelmere (ASN00031129): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Hazelmere Thresholds

  • Hazelmere: days with 10 mm (0.39 in) or more of precipitation in 35 years, most in 1973 with 58.
  • Hazelmere: days with 25 mm (0.98 in) or more of precipitation in 35 years, most in 2006 with 31.
  • Hazelmere: days with 50 mm (1.97 in) or more of precipitation in 35 years, most in 2000 with 15.
  • Hazelmere: days with 100 mm (3.94 in) or more of precipitation in 29 years, most in 2006 with 7.
  • 5 fixed thresholds have at least one qualifying day at Hazelmere.
35 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Hazelmere Days per year at Hazelmere with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 58 in 1973. 02040601973: 581974: 511975: 381976: 401979: 401980: 311981: 451982: 361983: 361984: 451985: 461986: 321987: 371988: 371989: 471990: 381991: 421992: 401993: 381994: 241995: 381996: 451997: 411998: 561999: 542000: 482001: 312002: 152003: 192006: 492007: 322009: 272018: 462019: 352020: 36197319791983198719911995199920032018
Days per year at Hazelmere with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 58 in 1973.
Days with 10 mm (0.39 in) or more of precipitation per year at Hazelmere
YearDaysDecade average
19735845.4
19745145.4
19753845.4
19764045.4
19794045.4
19803139.2
19814539.2
19823639.2
19833639.2
19844539.2
19854639.2
19863239.2
19873739.2
19883739.2
19894739.2
19903841.6
19914241.6
19924041.6
19933841.6
19942441.6
19953841.6
19964541.6
19974141.6
19985641.6
19995441.6
20004831.6
20013131.6
20021531.6
20031931.6
20064931.6
20073231.6
20092731.6
20184640.5
20193540.5
20203636
First to last qualifying date each year at Hazelmere For each year, a bar from the first to the last day at Hazelmere meeting 10 mm (0.39 in). 1973: 26 January 1973 to 31 December 19731974: 3 January 1974 to 31 December 19741975: 1 January 1975 to 31 December 19751976: 3 January 1976 to 31 December 19761979: 3 January 1979 to 26 December 19791980: 4 January 1980 to 13 July 19801981: 1 January 1981 to 27 December 19811982: 16 January 1982 to 9 December 19821983: 2 January 1983 to 15 December 19831984: 11 January 1984 to 28 December 19841985: 14 January 1985 to 12 December 19851986: 3 January 1986 to 20 December 19861987: 4 January 1987 to 31 December 19871988: 18 January 1988 to 30 December 19881989: 2 January 1989 to 27 November 19891990: 12 January 1990 to 30 December 19901991: 1 January 1991 to 19 December 19911992: 11 January 1992 to 29 December 19921993: 7 January 1993 to 31 December 19931994: 25 January 1994 to 25 December 19941995: 11 January 1995 to 27 December 19951996: 1 January 1996 to 27 December 19961997: 1 January 1997 to 31 December 19971998: 3 January 1998 to 31 December 19981999: 1 January 1999 to 27 December 19992000: 3 January 2000 to 30 December 20002001: 2 January 2001 to 19 December 20012002: 4 January 2002 to 1 December 20022003: 27 January 2003 to 30 December 20032006: 11 January 2006 to 22 December 20062007: 22 January 2007 to 29 December 20072009: 1 January 2009 to 31 December 20092018: 6 January 2018 to 31 December 20182019: 1 January 2019 to 30 December 20192020: 4 January 2020 to 30 December 20201973198019851990199520002007JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Hazelmere meeting 10 mm (0.39 in).
First to last qualifying date each year at Hazelmere
YearFirst dateLast date
19731973-01-261973-12-31
19741974-01-031974-12-31
19751975-01-011975-12-31
19761976-01-031976-12-31
19791979-01-031979-12-26
19801980-01-041980-07-13
19811981-01-011981-12-27
19821982-01-161982-12-09
19831983-01-021983-12-15
19841984-01-111984-12-28
19851985-01-141985-12-12
19861986-01-031986-12-20
19871987-01-041987-12-31
19881988-01-181988-12-30
19891989-01-021989-11-27
19901990-01-121990-12-30
19911991-01-011991-12-19
19921992-01-111992-12-29
19931993-01-071993-12-31
19941994-01-251994-12-25
19951995-01-111995-12-27
19961996-01-011996-12-27
19971997-01-011997-12-31
19981998-01-031998-12-31
19991999-01-011999-12-27
20002000-01-032000-12-30
20012001-01-022001-12-19
20022002-01-042002-12-01
20032003-01-272003-12-30
20062006-01-112006-12-22
20072007-01-222007-12-29
20092009-01-012009-12-31
20182018-01-062018-12-31
20192019-01-012019-12-30
20202020-01-042020-12-30

Every Fixed Threshold

Fixed thresholds at Hazelmere
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3558197336
25 mm (0.98 in): Days with 25 mm or more rain3531200617
50 mm (1.97 in): Days with 50 mm or more rain351520005
100 mm (3.94 in): Days with 100 mm or more rain29720063
200 mm (7.87 in): Days with 200 mm or more rain4119801

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1973.

Download the Data

  • Data for Hazelmere 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

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