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Built 2026-10-19 (19 October 2026)

Florence Threshold Days by Year (USC00413199)

6 fixed thresholds counted per year at Florence (USC00413199): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Florence Thresholds

  • Florence: days with 10 mm (0.39 in) or more of precipitation in 52 years, most in 1976 with 41.
  • Florence: days with 25 mm (0.98 in) or more of precipitation in 52 years, most in 2004 with 19.
  • Florence: days with 50 mm (1.97 in) or more of precipitation in 49 years, most in 1997 with 9.
  • Florence: days with 100 mm (3.94 in) or more of precipitation in 11 years, most in 1972 with 2.
  • 6 fixed thresholds have at least one qualifying day at Florence.
52 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Florence Days per year at Florence with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 41 in 1976. 02040601964: 271965: 331966: 241967: 221968: 341969: 331970: 241971: 281972: 291973: 361974: 361975: 291976: 411977: 211978: 281979: 301980: 261981: 331982: 181983: 241984: 191985: 271986: 231987: 271988: 141989: 241990: 231991: 401992: 351993: 321994: 261996: 221997: 351998: 301999: 192000: 252002: 282003: 242004: 372005: 242006: 262009: 252010: 212011: 182012: 112013: 252014: 142015: 332016: 292017: 302018: 272019: 19196419701976198219881994200220102016
Days per year at Florence with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 41 in 1976.
Days with 10 mm (0.39 in) or more of precipitation per year at Florence
YearDaysDecade average
19642728.8
19653328.8
19662428.8
19672228.8
19683428.8
19693328.8
19702430.2
19712830.2
19722930.2
19733630.2
19743630.2
19752930.2
19764130.2
19772130.2
19782830.2
19793030.2
19802623.5
19813323.5
19821823.5
19832423.5
19841923.5
19852723.5
19862323.5
19872723.5
19881423.5
19892423.5
19902329.1
19914029.1
19923529.1
19933229.1
19942629.1
19962229.1
19973529.1
19983029.1
19991929.1
20002527
20022827
20032427
20043727
20052427
20062627
20092527
20102122.7
20111822.7
20121122.7
20132522.7
20141422.7
20153322.7
20162922.7
20173022.7
20182722.7
20191922.7
First to last qualifying date each year at Florence For each year, a bar from the first to the last day at Florence meeting 10 mm (0.39 in). 1964: 16 January 1964 to 10 December 19641965: 3 January 1965 to 18 December 19651966: 19 January 1966 to 17 October 19661967: 20 March 1967 to 15 December 19671968: 5 January 1968 to 22 December 19681969: 14 February 1969 to 6 December 19691970: 5 January 1970 to 19 October 19701971: 26 February 1971 to 10 December 19711972: 30 January 1972 to 15 December 19721973: 2 January 1973 to 19 December 19731974: 11 January 1974 to 26 December 19741975: 2 January 1975 to 25 December 19751976: 25 January 1976 to 10 December 19761977: 13 January 1977 to 8 November 19771978: 16 January 1978 to 30 December 19781979: 11 January 1979 to 29 December 19791980: 21 January 1980 to 8 December 19801981: 19 January 1981 to 8 November 19811982: 25 February 1982 to 26 December 19821983: 19 January 1983 to 26 November 19831984: 8 January 1984 to 30 December 19841985: 16 January 1985 to 11 December 19851986: 3 February 1986 to 22 December 19861987: 19 February 1987 to 25 December 19871988: 19 February 1988 to 9 December 19881989: 12 January 1989 to 22 November 19891990: 31 January 1990 to 9 November 19901991: 3 January 1991 to 26 December 19911992: 2 January 1992 to 16 December 19921993: 4 January 1993 to 19 December 19931994: 7 January 1994 to 27 December 19941996: 17 March 1996 to 16 December 19961997: 7 January 1997 to 20 December 19971998: 2 January 1998 to 20 November 19981999: 8 March 1999 to 20 December 19992000: 7 January 2000 to 25 December 20002002: 30 January 2002 to 22 December 20022003: 12 January 2003 to 9 October 20032004: 15 January 2004 to 6 December 20042005: 2 January 2005 to 26 November 20052006: 29 January 2006 to 30 December 20062009: 5 January 2009 to 29 December 20092010: 15 January 2010 to 24 December 20102011: 10 January 2011 to 21 December 20112012: 9 January 2012 to 14 October 20122013: 9 January 2013 to 22 December 20132014: 9 March 2014 to 23 November 20142015: 3 January 2015 to 13 December 20152016: 23 February 2016 to 27 December 20162017: 2 January 2017 to 17 December 20172018: 23 February 2018 to 27 December 20182019: 2 January 2019 to 25 October 201919641971197819851992200020102017JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Florence meeting 10 mm (0.39 in).
First to last qualifying date each year at Florence
YearFirst dateLast date
19641964-01-161964-12-10
19651965-01-031965-12-18
19661966-01-191966-10-17
19671967-03-201967-12-15
19681968-01-051968-12-22
19691969-02-141969-12-06
19701970-01-051970-10-19
19711971-02-261971-12-10
19721972-01-301972-12-15
19731973-01-021973-12-19
19741974-01-111974-12-26
19751975-01-021975-12-25
19761976-01-251976-12-10
19771977-01-131977-11-08
19781978-01-161978-12-30
19791979-01-111979-12-29
19801980-01-211980-12-08
19811981-01-191981-11-08
19821982-02-251982-12-26
19831983-01-191983-11-26
19841984-01-081984-12-30
19851985-01-161985-12-11
19861986-02-031986-12-22
19871987-02-191987-12-25
19881988-02-191988-12-09
19891989-01-121989-11-22
19901990-01-311990-11-09
19911991-01-031991-12-26
19921992-01-021992-12-16
19931993-01-041993-12-19
19941994-01-071994-12-27
19961996-03-171996-12-16
19971997-01-071997-12-20
19981998-01-021998-11-20
19991999-03-081999-12-20
20002000-01-072000-12-25
20022002-01-302002-12-22
20032003-01-122003-10-09
20042004-01-152004-12-06
20052005-01-022005-11-26
20062006-01-292006-12-30
20092009-01-052009-12-29
20102010-01-152010-12-24
20112011-01-102011-12-21
20122012-01-092012-10-14
20132013-01-092013-12-22
20142014-03-092014-11-23
20152015-01-032015-12-13
20162016-02-232016-12-27
20172017-01-022017-12-17
20182018-02-232018-12-27
20192019-01-022019-10-25

Every Fixed Threshold

Fixed thresholds at Florence
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain5241197619
25 mm (0.98 in): Days with 25 mm or more rain521920047
50 mm (1.97 in): Days with 50 mm or more rain49919971
100 mm (3.94 in): Days with 100 mm or more rain11219722
200 mm (7.87 in): Days with 200 mm or more rain1120101
10 cm (3.9 in): Days with 10 cm or more snowfall3119641

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1964.

Download the Data

  • Data for Florence 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).