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Built 2026-10-16 (16 October 2026)

Rivermead Threshold Days by Year

5 fixed thresholds counted per year at Rivermead (ASN00040437): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Rivermead Thresholds

  • Rivermead: days with 10 mm (0.39 in) or more of precipitation in 28 years, most in 1978 with 35.
  • Rivermead: days with 25 mm (0.98 in) or more of precipitation in 28 years, most in 1988 with 17.
  • Rivermead: days with 50 mm (1.97 in) or more of precipitation in 25 years, most in 1988 with 8.
  • Rivermead: days with 100 mm (3.94 in) or more of precipitation in 10 years, most in 1972 with 2.
  • 5 fixed thresholds have at least one qualifying day at Rivermead.
28 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Rivermead Days per year at Rivermead with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 35 in 1978. 0102030401971: 311972: 291973: 281974: 311975: 261976: 251977: 201978: 351979: 271980: 151981: 301982: 221983: 321984: 191985: 291986: 201987: 251988: 351989: 291990: 231991: 211992: 261993: 131994: 131995: 241996: 271999: 302000: 171971197419771980198319861989199219952000
Days per year at Rivermead with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 35 in 1978.
Days with 10 mm (0.39 in) or more of precipitation per year at Rivermead
YearDaysDecade average
19713128
19722928
19732828
19743128
19752628
19762528
19772028
19783528
19792728
19801525.6
19813025.6
19822225.6
19833225.6
19841925.6
19852925.6
19862025.6
19872525.6
19883525.6
19892925.6
19902322.1
19912122.1
19922622.1
19931322.1
19941322.1
19952422.1
19962722.1
19993022.1
20001717
First to last qualifying date each year at Rivermead For each year, a bar from the first to the last day at Rivermead meeting 10 mm (0.39 in). 1971: 1 January 1971 to 28 December 19711972: 15 January 1972 to 29 December 19721973: 10 January 1973 to 27 December 19731974: 1 January 1974 to 30 December 19741975: 9 January 1975 to 23 December 19751976: 15 January 1976 to 5 December 19761977: 4 January 1977 to 23 December 19771978: 4 January 1978 to 30 December 19781979: 19 January 1979 to 27 December 19791980: 29 January 1980 to 17 December 19801981: 1 January 1981 to 24 December 19811982: 20 January 1982 to 20 December 19821983: 2 January 1983 to 31 December 19831984: 17 January 1984 to 28 December 19841985: 6 January 1985 to 28 December 19851986: 18 January 1986 to 27 December 19861987: 3 January 1987 to 30 December 19871988: 5 January 1988 to 18 December 19881989: 6 January 1989 to 23 December 19891990: 16 January 1990 to 23 December 19901991: 3 January 1991 to 21 December 19911992: 1 January 1992 to 15 December 19921993: 6 January 1993 to 9 December 19931994: 10 January 1994 to 10 September 19941995: 3 January 1995 to 24 December 19951996: 4 January 1996 to 19 December 19961999: 2 January 1999 to 28 December 19992000: 5 January 2000 to 30 December 20001971197519791983198719911995JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Rivermead meeting 10 mm (0.39 in).
First to last qualifying date each year at Rivermead
YearFirst dateLast date
19711971-01-011971-12-28
19721972-01-151972-12-29
19731973-01-101973-12-27
19741974-01-011974-12-30
19751975-01-091975-12-23
19761976-01-151976-12-05
19771977-01-041977-12-23
19781978-01-041978-12-30
19791979-01-191979-12-27
19801980-01-291980-12-17
19811981-01-011981-12-24
19821982-01-201982-12-20
19831983-01-021983-12-31
19841984-01-171984-12-28
19851985-01-061985-12-28
19861986-01-181986-12-27
19871987-01-031987-12-30
19881988-01-051988-12-18
19891989-01-061989-12-23
19901990-01-161990-12-23
19911991-01-031991-12-21
19921992-01-011992-12-15
19931993-01-061993-12-09
19941994-01-101994-09-10
19951995-01-031995-12-24
19961996-01-041996-12-19
19991999-01-021999-12-28
20002000-01-052000-12-30

Every Fixed Threshold

Fixed thresholds at Rivermead
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2835197817
25 mm (0.98 in): Days with 25 mm or more rain281719882
50 mm (1.97 in): Days with 50 mm or more rain25819881
100 mm (3.94 in): Days with 100 mm or more rain10219721
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 1971.

Download the Data

  • Data for Rivermead 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).