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Built 2026-10-19 (19 October 2026)

Walpole North Old Threshold Days by Year

4 fixed thresholds counted per year at Walpole North Old (ASN00009612): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Walpole North Old Thresholds

  • Walpole North Old: days with 10 mm (0.39 in) or more of precipitation in 44 years, most in 1947 with 55.
  • Walpole North Old: days with 25 mm (0.98 in) or more of precipitation in 43 years, most in 1961 with 16.
  • Walpole North Old: days with 50 mm (1.97 in) or more of precipitation in 17 years, most in 1961 with 3.
  • Walpole North Old: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1985 with 1.
  • 4 fixed thresholds have at least one qualifying day at Walpole North Old.
44 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Walpole North Old Days per year at Walpole North Old with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 55 in 1947. 02040601947: 551948: 361949: 371950: 501951: 391952: 411953: 321954: 301955: 531956: 411957: 291958: 391959: 321960: 411961: 451962: 431963: 381964: 461965: 481966: 411967: 391968: 411969: 251970: 481971: 421972: 241973: 431974: 391975: 481976: 321977: 421978: 451979: 401980: 401981: 451982: 321983: 341984: 421985: 331986: 311987: 211988: 451989: 431990: 36194719521957196219671972197719821987
Days per year at Walpole North Old with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 55 in 1947.
Days with 10 mm (0.39 in) or more of precipitation per year at Walpole North Old
YearDaysDecade average
19475542.7
19483642.7
19493742.7
19505038.6
19513938.6
19524138.6
19533238.6
19543038.6
19555338.6
19564138.6
19572938.6
19583938.6
19593238.6
19604140.7
19614540.7
19624340.7
19633840.7
19644640.7
19654840.7
19664140.7
19673940.7
19684140.7
19692540.7
19704840.3
19714240.3
19722440.3
19734340.3
19743940.3
19754840.3
19763240.3
19774240.3
19784540.3
19794040.3
19804036.6
19814536.6
19823236.6
19833436.6
19844236.6
19853336.6
19863136.6
19872136.6
19884536.6
19894336.6
19903636
First to last qualifying date each year at Walpole North Old For each year, a bar from the first to the last day at Walpole North Old meeting 10 mm (0.39 in). 1947: 6 March 1947 to 21 December 19471948: 17 April 1948 to 24 December 19481949: 25 January 1949 to 19 November 19491950: 3 January 1950 to 27 December 19501951: 2 January 1951 to 18 December 19511952: 23 January 1952 to 25 December 19521953: 2 February 1953 to 10 November 19531954: 16 March 1954 to 16 November 19541955: 12 February 1955 to 15 December 19551956: 5 March 1956 to 4 December 19561957: 19 March 1957 to 20 October 19571958: 25 January 1958 to 11 November 19581959: 13 April 1959 to 30 December 19591960: 8 January 1960 to 17 December 19601961: 26 January 1961 to 16 December 19611962: 16 March 1962 to 30 December 19621963: 26 January 1963 to 11 November 19631964: 30 January 1964 to 20 December 19641965: 14 January 1965 to 20 December 19651966: 11 March 1966 to 27 December 19661967: 15 March 1967 to 24 December 19671968: 12 February 1968 to 31 October 19681969: 13 March 1969 to 4 November 19691970: 7 February 1970 to 12 December 19701971: 6 February 1971 to 23 November 19711972: 6 January 1972 to 8 October 19721973: 16 April 1973 to 14 November 19731974: 27 January 1974 to 24 November 19741975: 2 April 1975 to 17 November 19751976: 7 January 1976 to 28 November 19761977: 19 January 1977 to 31 December 19771978: 18 February 1978 to 15 December 19781979: 27 February 1979 to 13 November 19791980: 20 March 1980 to 29 November 19801981: 6 March 1981 to 28 November 19811982: 22 January 1982 to 28 November 19821983: 15 February 1983 to 31 December 19831984: 18 February 1984 to 28 December 19841985: 18 January 1985 to 3 November 19851986: 22 February 1986 to 30 November 19861987: 17 March 1987 to 24 December 19871988: 24 March 1988 to 4 November 19881989: 6 January 1989 to 25 October 19891990: 10 January 1990 to 1 November 199019471953195919651971197719831989JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Walpole North Old meeting 10 mm (0.39 in).
First to last qualifying date each year at Walpole North Old
YearFirst dateLast date
19471947-03-061947-12-21
19481948-04-171948-12-24
19491949-01-251949-11-19
19501950-01-031950-12-27
19511951-01-021951-12-18
19521952-01-231952-12-25
19531953-02-021953-11-10
19541954-03-161954-11-16
19551955-02-121955-12-15
19561956-03-051956-12-04
19571957-03-191957-10-20
19581958-01-251958-11-11
19591959-04-131959-12-30
19601960-01-081960-12-17
19611961-01-261961-12-16
19621962-03-161962-12-30
19631963-01-261963-11-11
19641964-01-301964-12-20
19651965-01-141965-12-20
19661966-03-111966-12-27
19671967-03-151967-12-24
19681968-02-121968-10-31
19691969-03-131969-11-04
19701970-02-071970-12-12
19711971-02-061971-11-23
19721972-01-061972-10-08
19731973-04-161973-11-14
19741974-01-271974-11-24
19751975-04-021975-11-17
19761976-01-071976-11-28
19771977-01-191977-12-31
19781978-02-181978-12-15
19791979-02-271979-11-13
19801980-03-201980-11-29
19811981-03-061981-11-28
19821982-01-221982-11-28
19831983-02-151983-12-31
19841984-02-181984-12-28
19851985-01-181985-11-03
19861986-02-221986-11-30
19871987-03-171987-12-24
19881988-03-241988-11-04
19891989-01-061989-10-25
19901990-01-101990-11-01

Every Fixed Threshold

Fixed thresholds at Walpole North Old
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4455194736
25 mm (0.98 in): Days with 25 mm or more rain431619615
50 mm (1.97 in): Days with 50 mm or more rain17319612
100 mm (3.94 in): Days with 100 mm or more rain1119851

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1947.

Download the Data

  • Data for Walpole North Old 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).