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Built 2026-10-19 (19 October 2026)

Belltower Threshold Days by Year (USC00240636)

7 fixed thresholds counted per year at Belltower (USC00240636): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Belltower Thresholds

  • Belltower: days with 10 mm (0.39 in) or more of precipitation in 72 years, most in 1982 with 19.
  • Belltower: days with 25 mm (0.98 in) or more of precipitation in 56 years, most in 2013 with 5.
  • Belltower: days with 10 cm (3.9 in) or more of snowfall in 40 years, most in 1964 with 9.
  • Belltower: days with 50 mm (1.97 in) or more of precipitation in 16 years, most in 2013 with 2.
  • 7 fixed thresholds have at least one qualifying day at Belltower.
72 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Belltower Days per year at Belltower with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 19 in 1982. 051015201951: 131952: 121953: 151954: 111955: 51956: 81957: 101958: 81959: 111960: 121961: 51962: 151963: 101964: 111965: 121966: 101967: 101968: 121969: 71970: 81971: 131972: 121973: 121974: 101975: 171976: 101977: 141980: 31981: 91982: 191983: 91984: 131985: 101986: 121987: 131988: 51989: 101990: 61991: 111992: 101993: 121995: 111996: 131997: 81998: 141999: 122000: 102001: 152002: 22003: 72004: 102005: 102006: 72007: 142008: 102009: 112011: 122012: 72013: 152014: 132015: 112016: 92017: 102018: 112019: 152020: 82021: 42022: 92023: 62024: 42025: 162026: 5195119591967197519851993200220112019
Days per year at Belltower with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 19 in 1982.
Days with 10 mm (0.39 in) or more of precipitation per year at Belltower
YearDaysDecade average
19511310.3
19521210.3
19531510.3
19541110.3
1955510.3
1956810.3
19571010.3
1958810.3
19591110.3
19601210.4
1961510.4
19621510.4
19631010.4
19641110.4
19651210.4
19661010.4
19671010.4
19681210.4
1969710.4
1970812
19711312
19721212
19731212
19741012
19751712
19761012
19771412
1980310.3
1981910.3
19821910.3
1983910.3
19841310.3
19851010.3
19861210.3
19871310.3
1988510.3
19891010.3
1990610.8
19911110.8
19921010.8
19931210.8
19951110.8
19961310.8
1997810.8
19981410.8
19991210.8
2000109.6
2001159.6
200229.6
200379.6
2004109.6
2005109.6
200679.6
2007149.6
2008109.6
2009119.6
20111211.4
2012711.4
20131511.4
20141311.4
20151111.4
2016911.4
20171011.4
20181111.4
20191511.4
202087.4
202147.4
202297.4
202367.4
202447.4
2025167.4
202657.4
First to last qualifying date each year at Belltower For each year, a bar from the first to the last day at Belltower meeting 10 mm (0.39 in). 1951: 18 January 1951 to 20 October 19511952: 18 February 1952 to 17 August 19521953: 15 February 1953 to 18 November 19531954: 12 March 1954 to 6 September 19541955: 4 April 1955 to 12 July 19551956: 10 May 1956 to 18 August 19561957: 20 May 1957 to 8 October 19571958: 31 May 1958 to 21 October 19581959: 13 February 1959 to 23 November 19591960: 16 February 1960 to 28 November 19601961: 12 May 1961 to 19 September 19611962: 28 April 1962 to 6 October 19621963: 3 April 1963 to 25 October 19631964: 2 May 1964 to 14 November 19641965: 10 April 1965 to 24 August 19651966: 3 March 1966 to 8 November 19661967: 16 April 1967 to 18 September 19671968: 14 March 1968 to 27 December 19681969: 26 April 1969 to 20 July 19691970: 27 February 1970 to 24 September 19701971: 9 January 1971 to 14 November 19711972: 22 April 1972 to 23 December 19721973: 19 April 1973 to 15 September 19731974: 7 April 1974 to 31 October 19741975: 20 January 1975 to 27 December 19751976: 14 April 1976 to 25 September 19761977: 18 February 1977 to 7 October 19771980: 10 June 1980 to 15 October 19801981: 7 May 1981 to 8 August 19811982: 17 March 1982 to 28 October 19821983: 6 March 1983 to 4 December 19831984: 3 January 1984 to 23 December 19841985: 2 March 1985 to 17 December 19851986: 21 January 1986 to 1 December 19861987: 20 March 1987 to 5 September 19871988: 19 February 1988 to 26 December 19881989: 24 January 1989 to 31 August 19891990: 17 January 1990 to 21 July 19901991: 8 April 1991 to 23 October 19911992: 16 April 1992 to 7 October 19921993: 12 January 1993 to 16 August 19931995: 8 May 1995 to 5 October 19951996: 3 January 1996 to 20 October 19961997: 4 January 1997 to 9 October 19971998: 25 February 1998 to 29 October 19981999: 21 April 1999 to 18 November 19992000: 24 April 2000 to 1 November 20002001: 14 March 2001 to 24 July 20012002: 8 June 2002 to 18 September 20022003: 18 March 2003 to 29 October 20032004: 29 February 2004 to 29 October 20042005: 8 May 2005 to 30 October 20052006: 1 April 2006 to 22 September 20062007: 28 March 2007 to 4 December 20072008: 1 May 2008 to 12 October 20082009: 23 March 2009 to 5 October 20092011: 20 February 2011 to 16 August 20112012: 27 May 2012 to 23 October 20122013: 19 May 2013 to 3 December 20132014: 31 March 2014 to 30 September 20142015: 6 June 2015 to 23 October 20152016: 18 April 2016 to 29 October 20162017: 23 March 2017 to 15 September 20172018: 8 February 2018 to 1 December 20182019: 9 March 2019 to 30 September 20192020: 11 April 2020 to 14 October 20202021: 4 July 2021 to 13 October 20212022: 21 February 2022 to 11 November 20222023: 7 May 2023 to 24 October 20232024: 24 March 2024 to 7 August 20242025: 13 April 2025 to 27 October 20252026: 3 April 2026 to 20 September 202619511960196919801989199920082018JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Belltower meeting 10 mm (0.39 in).
First to last qualifying date each year at Belltower
YearFirst dateLast date
19511951-01-181951-10-20
19521952-02-181952-08-17
19531953-02-151953-11-18
19541954-03-121954-09-06
19551955-04-041955-07-12
19561956-05-101956-08-18
19571957-05-201957-10-08
19581958-05-311958-10-21
19591959-02-131959-11-23
19601960-02-161960-11-28
19611961-05-121961-09-19
19621962-04-281962-10-06
19631963-04-031963-10-25
19641964-05-021964-11-14
19651965-04-101965-08-24
19661966-03-031966-11-08
19671967-04-161967-09-18
19681968-03-141968-12-27
19691969-04-261969-07-20
19701970-02-271970-09-24
19711971-01-091971-11-14
19721972-04-221972-12-23
19731973-04-191973-09-15
19741974-04-071974-10-31
19751975-01-201975-12-27
19761976-04-141976-09-25
19771977-02-181977-10-07
19801980-06-101980-10-15
19811981-05-071981-08-08
19821982-03-171982-10-28
19831983-03-061983-12-04
19841984-01-031984-12-23
19851985-03-021985-12-17
19861986-01-211986-12-01
19871987-03-201987-09-05
19881988-02-191988-12-26
19891989-01-241989-08-31
19901990-01-171990-07-21
19911991-04-081991-10-23
19921992-04-161992-10-07
19931993-01-121993-08-16
19951995-05-081995-10-05
19961996-01-031996-10-20
19971997-01-041997-10-09
19981998-02-251998-10-29
19991999-04-211999-11-18
20002000-04-242000-11-01
20012001-03-142001-07-24
20022002-06-082002-09-18
20032003-03-182003-10-29
20042004-02-292004-10-29
20052005-05-082005-10-30
20062006-04-012006-09-22
20072007-03-282007-12-04
20082008-05-012008-10-12
20092009-03-232009-10-05
20112011-02-202011-08-16
20122012-05-272012-10-23
20132013-05-192013-12-03
20142014-03-312014-09-30
20152015-06-062015-10-23
20162016-04-182016-10-29
20172017-03-232017-09-15
20182018-02-082018-12-01
20192019-03-092019-09-30
20202020-04-112020-10-14
20212021-07-042021-10-13
20222022-02-212022-11-11
20232023-05-072023-10-24
20242024-03-242024-08-07
20252025-04-132025-10-27
20262026-04-032026-09-20

Every Fixed Threshold

Fixed thresholds at Belltower
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain721919825
25 mm (0.98 in): Days with 25 mm or more rain56520132
50 mm (1.97 in): Days with 50 mm or more rain16220131
100 mm (3.94 in): Days with 100 mm or more rain2119751
10 cm (3.9 in): Days with 10 cm or more snowfall40919641
25 cm (9.8 in): Days with 25 cm or more snowfall6220222
50 cm (19.7 in): Days with 50 cm or more snowfall1119671

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1951.

Download the Data

  • Data for Belltower 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 (2026-10-17).