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Built 2026-10-19 (19 October 2026)

Clewiston Threshold Days by Year (USC00081654)

12 fixed thresholds counted per year at Clewiston (USC00081654): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Clewiston Thresholds

  • Clewiston: days with 10 mm (0.39 in) or more of precipitation in 46 years, most in 1957 with 53.
  • Clewiston: days with 25 mm (0.98 in) or more of precipitation in 46 years, most in 1959 with 24.
  • Clewiston: days with a maximum temperature at or above 30 C (86 F) in 45 years, most in 1975 with 224.
  • Clewiston: days with a maximum temperature at or above 90 F (32.2 C) in 45 years, most in 1989 with 135.
  • 12 fixed thresholds have at least one qualifying day at Clewiston.
45 years with a qualifying day
Days at or above 30 C (86 F) per year at Clewiston Days per year at Clewiston with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 224 in 1975. 01002003001950: 1461951: 1431952: 1681953: 1891954: 1551955: 1431956: 1851957: 1601958: 1681959: 1781960: 1591961: 1951962: 1891963: 1821964: 1731965: 1851966: 1681967: 1781968: 1641969: 1571970: 1831971: 1951972: 2021973: 1821974: 1851975: 2241976: 1731977: 1741978: 1821979: 1771980: 1951981: 1911982: 1971983: 1851984: 1751985: 2141986: 2081987: 1721988: 1671989: 2121990: 2121991: 1791992: 1491993: 1551994: 188195019551960196519701975198019851990
Days per year at Clewiston with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 224 in 1975.
Days at or above 30 C (86 F) per year at Clewiston
YearDaysDecade average
1950146163.5
1951143163.5
1952168163.5
1953189163.5
1954155163.5
1955143163.5
1956185163.5
1957160163.5
1958168163.5
1959178163.5
1960159175
1961195175
1962189175
1963182175
1964173175
1965185175
1966168175
1967178175
1968164175
1969157175
1970183187.7
1971195187.7
1972202187.7
1973182187.7
1974185187.7
1975224187.7
1976173187.7
1977174187.7
1978182187.7
1979177187.7
1980195191.6
1981191191.6
1982197191.6
1983185191.6
1984175191.6
1985214191.6
1986208191.6
1987172191.6
1988167191.6
1989212191.6
1990212176.6
1991179176.6
1992149176.6
1993155176.6
1994188176.6
First to last qualifying date each year at Clewiston For each year, a bar from the first to the last day at Clewiston meeting 30 C (86 F). 1950: 7 March 1950 to 24 October 19501951: 5 March 1951 to 27 December 19511952: 4 March 1952 to 12 November 19521953: 22 February 1953 to 14 December 19531954: 21 January 1954 to 17 November 19541955: 5 March 1955 to 9 December 19551956: 6 February 1956 to 25 December 19561957: 29 January 1957 to 30 November 19571958: 3 March 1958 to 4 December 19581959: 22 January 1959 to 5 November 19591960: 7 January 1960 to 30 October 19601961: 20 February 1961 to 20 December 19611962: 28 January 1962 to 27 December 19621963: 13 January 1963 to 14 December 19631964: 9 January 1964 to 26 December 19641965: 11 January 1965 to 17 December 19651966: 16 February 1966 to 26 October 19661967: 1 January 1967 to 20 December 19671968: 11 March 1968 to 29 November 19681969: 25 March 1969 to 24 October 19691970: 17 February 1970 to 15 November 19701971: 7 January 1971 to 31 December 19711972: 5 January 1972 to 16 December 19721973: 28 January 1973 to 28 December 19731974: 1 January 1974 to 21 December 19741975: 12 January 1975 to 28 November 19751976: 27 January 1976 to 13 December 19761977: 4 February 1977 to 6 December 19771978: 9 March 1978 to 10 December 19781979: 19 February 1979 to 13 November 19791980: 24 February 1980 to 25 November 19801981: 12 February 1981 to 28 December 19811982: 2 January 1982 to 6 December 19821983: 7 March 1983 to 29 December 19831984: 19 January 1984 to 6 December 19841985: 3 January 1985 to 13 December 19851986: 6 February 1986 to 13 December 19861987: 18 January 1987 to 18 November 19871988: 20 February 1988 to 29 December 19881989: 16 January 1989 to 9 December 19891990: 8 January 1990 to 24 December 19901991: 30 January 1991 to 4 December 19911992: 19 February 1992 to 27 November 19921993: 12 January 1993 to 28 November 19931994: 29 January 1994 to 5 December 199419501956196219681974198019861992JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Clewiston meeting 30 C (86 F).
First to last qualifying date each year at Clewiston
YearFirst dateLast date
19501950-03-071950-10-24
19511951-03-051951-12-27
19521952-03-041952-11-12
19531953-02-221953-12-14
19541954-01-211954-11-17
19551955-03-051955-12-09
19561956-02-061956-12-25
19571957-01-291957-11-30
19581958-03-031958-12-04
19591959-01-221959-11-05
19601960-01-071960-10-30
19611961-02-201961-12-20
19621962-01-281962-12-27
19631963-01-131963-12-14
19641964-01-091964-12-26
19651965-01-111965-12-17
19661966-02-161966-10-26
19671967-01-011967-12-20
19681968-03-111968-11-29
19691969-03-251969-10-24
19701970-02-171970-11-15
19711971-01-071971-12-31
19721972-01-051972-12-16
19731973-01-281973-12-28
19741974-01-011974-12-21
19751975-01-121975-11-28
19761976-01-271976-12-13
19771977-02-041977-12-06
19781978-03-091978-12-10
19791979-02-191979-11-13
19801980-02-241980-11-25
19811981-02-121981-12-28
19821982-01-021982-12-06
19831983-03-071983-12-29
19841984-01-191984-12-06
19851985-01-031985-12-13
19861986-02-061986-12-13
19871987-01-181987-11-18
19881988-02-201988-12-29
19891989-01-161989-12-09
19901990-01-081990-12-24
19911991-01-301991-12-04
19921992-02-191992-11-27
19931993-01-121993-11-28
19941994-01-291994-12-05

Every Fixed Threshold

Fixed thresholds at Clewiston
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days452241975188
35 C (95 F): Days444619816
90 F (32.2 C): Days45135198992
100 F (37.8 C): Days4119801
0 C (32 F): Frost days (min18619813
20 C (68 F): Tropical nights (min452301994230
25 C (77 F): Days with min411419603
10 mm (0.39 in): Days with 10 mm or more rain4653195742
25 mm (0.98 in): Days with 25 mm or more rain4624195910
50 mm (1.97 in): Days with 50 mm or more rain45719742
100 mm (3.94 in): Days with 100 mm or more rain16219501
200 mm (7.87 in): Days with 200 mm or more rain1119821

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1950.

Download the Data

  • Data for Clewiston 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).