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Built 2026-10-19 (19 October 2026)

Ozona Threshold Days by Year (USC00416734)

16 fixed thresholds counted per year at Ozona (USC00416734): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ozona Thresholds

  • Ozona: days with a maximum temperature at or above 30 C (86 F) in 52 years, most in 1963 with 176.
  • Ozona: days with a maximum temperature at or above 35 C (95 F) in 52 years, most in 2011 with 114.
  • Ozona: days with a maximum temperature at or above 90 F (32.2 C) in 52 years, most in 1962 with 144.
  • Ozona: days with 10 mm (0.39 in) or more of precipitation in 51 years, most in 2004 with 26.
  • 16 fixed thresholds have at least one qualifying day at Ozona.
52 years with a qualifying day
Days at or above 30 C (86 F) per year at Ozona Days per year at Ozona with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 176 in 1963. 0501001502001949: 1121950: 1481954: 1481958: 1211959: 1371960: 1621961: 1521962: 1701963: 1761964: 1381965: 1461966: 1401967: 1481968: 1301969: 1361970: 1311971: 941972: 1171973: 1251974: 1261975: 1161976: 1101977: 1271979: 1381980: 1321981: 1251982: 1461983: 1151984: 1401985: 1281986: 1341987: 1171988: 1311989: 1551990: 1021991: 1401992: 1211993: 1401994: 1371995: 1151997: 1361998: 1531999: 1482000: 1602001: 1382002: 1442003: 1332004: 1072007: 1092008: 1222011: 1712012: 139194919611967197319801986199219992007
Days per year at Ozona with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 176 in 1963.
Days at or above 30 C (86 F) per year at Ozona
YearDaysDecade average
1949112112
1950148138.5
1954148138.5
1958121138.5
1959137138.5
1960162149.8
1961152149.8
1962170149.8
1963176149.8
1964138149.8
1965146149.8
1966140149.8
1967148149.8
1968130149.8
1969136149.8
1970131120.4
197194120.4
1972117120.4
1973125120.4
1974126120.4
1975116120.4
1976110120.4
1977127120.4
1979138120.4
1980132132.3
1981125132.3
1982146132.3
1983115132.3
1984140132.3
1985128132.3
1986134132.3
1987117132.3
1988131132.3
1989155132.3
1990102132.4
1991140132.4
1992121132.4
1993140132.4
1994137132.4
1995115132.4
1997136132.4
1998153132.4
1999148132.4
2000160130.4
2001138130.4
2002144130.4
2003133130.4
2004107130.4
2007109130.4
2008122130.4
2011171155
2012139155
First to last qualifying date each year at Ozona For each year, a bar from the first to the last day at Ozona meeting 30 C (86 F). 1949: 7 April 1949 to 28 November 19491950: 23 March 1950 to 19 November 19501954: 10 March 1954 to 4 December 19541958: 4 April 1958 to 10 October 19581959: 31 March 1959 to 24 October 19591960: 1 April 1960 to 29 October 19601961: 5 April 1961 to 24 October 19611962: 29 March 1962 to 17 October 19621963: 1 February 1963 to 8 November 19631964: 9 March 1964 to 18 October 19641965: 4 April 1965 to 26 November 19651966: 23 March 1966 to 14 October 19661967: 4 March 1967 to 27 October 19671968: 9 April 1968 to 30 October 19681969: 9 January 1969 to 12 October 19691970: 12 April 1970 to 26 October 19701971: 14 March 1971 to 17 September 19711972: 18 March 1972 to 19 October 19721973: 21 April 1973 to 3 November 19731974: 3 March 1974 to 28 September 19741975: 21 March 1975 to 14 October 19751976: 21 February 1976 to 28 September 19761977: 15 March 1977 to 19 October 19771979: 9 April 1979 to 22 October 19791980: 3 April 1980 to 9 November 19801981: 14 May 1981 to 15 October 19811982: 13 March 1982 to 19 October 19821983: 1 April 1983 to 12 October 19831984: 27 March 1984 to 26 September 19841985: 12 March 1985 to 27 October 19851986: 19 February 1986 to 3 October 19861987: 21 March 1987 to 6 October 19871988: 24 March 1988 to 10 November 19881989: 27 February 1989 to 24 October 19891990: 29 April 1990 to 10 September 19901991: 6 March 1991 to 20 October 19911992: 13 April 1992 to 15 October 19921993: 11 April 1993 to 19 October 19931994: 6 March 1994 to 23 October 19941995: 24 March 1995 to 20 October 19951997: 21 March 1997 to 31 October 19971998: 24 March 1998 to 5 October 19981999: 8 February 1999 to 23 October 19992000: 19 January 2000 to 5 October 20002001: 21 March 2001 to 23 October 20012002: 2 April 2002 to 6 October 20022003: 27 March 2003 to 23 October 20032004: 22 April 2004 to 20 October 20042007: 4 April 2007 to 6 November 20072008: 26 February 2008 to 4 October 20082011: 28 February 2011 to 27 October 20112012: 24 March 2012 to 22 October 201219491962196919761984199119992008JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Ozona meeting 30 C (86 F).
First to last qualifying date each year at Ozona
YearFirst dateLast date
19491949-04-071949-11-28
19501950-03-231950-11-19
19541954-03-101954-12-04
19581958-04-041958-10-10
19591959-03-311959-10-24
19601960-04-011960-10-29
19611961-04-051961-10-24
19621962-03-291962-10-17
19631963-02-011963-11-08
19641964-03-091964-10-18
19651965-04-041965-11-26
19661966-03-231966-10-14
19671967-03-041967-10-27
19681968-04-091968-10-30
19691969-01-091969-10-12
19701970-04-121970-10-26
19711971-03-141971-09-17
19721972-03-181972-10-19
19731973-04-211973-11-03
19741974-03-031974-09-28
19751975-03-211975-10-14
19761976-02-211976-09-28
19771977-03-151977-10-19
19791979-04-091979-10-22
19801980-04-031980-11-09
19811981-05-141981-10-15
19821982-03-131982-10-19
19831983-04-011983-10-12
19841984-03-271984-09-26
19851985-03-121985-10-27
19861986-02-191986-10-03
19871987-03-211987-10-06
19881988-03-241988-11-10
19891989-02-271989-10-24
19901990-04-291990-09-10
19911991-03-061991-10-20
19921992-04-131992-10-15
19931993-04-111993-10-19
19941994-03-061994-10-23
19951995-03-241995-10-20
19971997-03-211997-10-31
19981998-03-241998-10-05
19991999-02-081999-10-23
20002000-01-192000-10-05
20012001-03-212001-10-23
20022002-04-022002-10-06
20032003-03-272003-10-23
20042004-04-222004-10-20
20072007-04-042007-11-06
20082008-02-262008-10-04
20112011-02-282011-10-27
20122012-03-242012-10-22

Every Fixed Threshold

Fixed thresholds at Ozona
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days521761963139
35 C (95 F): Days52114201167
40 C (104 F): Days241419692
90 F (32.2 C): Days521441962116
100 F (37.8 C): Days4746196219
0 C (32 F): Ice days (max34519493
0 C (32 F): Frost days (min4883197959
-10 C (14 F): Days with min30919859
-20 C (-4 F): Days with min1119491
20 C (68 F): Tropical nights (min48100201179
25 C (77 F): Days with min71120112
10 mm (0.39 in): Days with 10 mm or more rain5126200411
25 mm (0.98 in): Days with 25 mm or more rain501019716
50 mm (1.97 in): Days with 50 mm or more rain33519712
100 mm (3.94 in): Days with 100 mm or more rain8119491
10 cm (3.9 in): Days with 10 cm or more snowfall3219661

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1949.

Download the Data

  • Data for Ozona 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).