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Built 2026-10-18 (18 October 2026)

Zapata 1 S Threshold Days by Year

16 fixed thresholds counted per year at Zapata 1 S (USC00419976): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Zapata 1 S Thresholds

  • Zapata 1 S: days with a maximum temperature at or above 30 C (86 F) in 37 years, most in 1909 with 263.
  • Zapata 1 S: days with a maximum temperature at or above 35 C (95 F) in 37 years, most in 1980 with 172.
  • Zapata 1 S: days with a maximum temperature at or above 90 F (32.2 C) in 37 years, most in 1909 with 225.
  • Zapata 1 S: days with a maximum temperature at or above 100 F (37.8 C) in 37 years, most in 1980 with 131.
  • 16 fixed thresholds have at least one qualifying day at Zapata 1 S.
37 years with a qualifying day
Days at or above 30 C (86 F) per year at Zapata 1 S Days per year at Zapata 1 S with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 263 in 1909. 01002003001909: 2631910: 2431966: 2021967: 2031968: 1961969: 2201970: 1951971: 2331972: 2111973: 2111974: 2241976: 2061977: 2141978: 2171979: 2241980: 2391981: 2001982: 2191986: 2321987: 2011988: 1871989: 2171990: 1941991: 2131992: 1891993: 1931994: 2021995: 2081996: 2211997: 1961998: 2142002: 2092003: 1732004: 1902005: 2082006: 2302007: 1971909196819721977198119881992199620032007
Days per year at Zapata 1 S with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 263 in 1909.
Days at or above 30 C (86 F) per year at Zapata 1 S
YearDaysDecade average
1909263263
1910243243
1966202205.3
1967203205.3
1968196205.3
1969220205.3
1970195215
1971233215
1972211215
1973211215
1974224215
1976206215
1977214215
1978217215
1979224215
1980239213.6
1981200213.6
1982219213.6
1986232213.6
1987201213.6
1988187213.6
1989217213.6
1990194203.3
1991213203.3
1992189203.3
1993193203.3
1994202203.3
1995208203.3
1996221203.3
1997196203.3
1998214203.3
2002209201.2
2003173201.2
2004190201.2
2005208201.2
2006230201.2
2007197201.2
First to last qualifying date each year at Zapata 1 S For each year, a bar from the first to the last day at Zapata 1 S meeting 30 C (86 F). 1909: 21 January 1909 to 4 December 19091910: 2 February 1910 to 11 December 19101966: 2 March 1966 to 22 December 19661967: 15 February 1967 to 26 November 19671968: 19 March 1968 to 27 December 19681969: 21 January 1969 to 17 November 19691970: 3 March 1970 to 22 December 19701971: 3 January 1971 to 29 December 19711972: 11 January 1972 to 23 December 19721973: 18 January 1973 to 3 December 19731974: 18 January 1974 to 19 November 19741976: 9 February 1976 to 12 November 19761977: 24 February 1977 to 16 December 19771978: 25 February 1978 to 3 December 19781979: 13 February 1979 to 28 November 19791980: 19 February 1980 to 14 November 19801981: 10 February 1981 to 28 December 19811982: 20 January 1982 to 1 December 19821986: 29 January 1986 to 19 November 19861987: 16 March 1987 to 12 December 19871988: 28 February 1988 to 27 November 19881989: 8 January 1989 to 28 November 19891990: 19 January 1990 to 28 November 19901991: 30 January 1991 to 20 November 19911992: 7 March 1992 to 4 November 19921993: 16 February 1993 to 11 December 19931994: 9 February 1994 to 9 December 19941995: 11 February 1995 to 6 December 19951996: 24 January 1996 to 13 December 19961997: 4 January 1997 to 6 November 19971998: 10 February 1998 to 20 December 19982002: 24 January 2002 to 31 December 20022003: 4 February 2003 to 4 November 20032004: 5 March 2004 to 30 November 20042005: 6 January 2005 to 28 December 20052006: 2 January 2006 to 30 November 20062007: 21 February 2007 to 22 December 200719091969197419801988199319982006JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Zapata 1 S meeting 30 C (86 F).
First to last qualifying date each year at Zapata 1 S
YearFirst dateLast date
19091909-01-211909-12-04
19101910-02-021910-12-11
19661966-03-021966-12-22
19671967-02-151967-11-26
19681968-03-191968-12-27
19691969-01-211969-11-17
19701970-03-031970-12-22
19711971-01-031971-12-29
19721972-01-111972-12-23
19731973-01-181973-12-03
19741974-01-181974-11-19
19761976-02-091976-11-12
19771977-02-241977-12-16
19781978-02-251978-12-03
19791979-02-131979-11-28
19801980-02-191980-11-14
19811981-02-101981-12-28
19821982-01-201982-12-01
19861986-01-291986-11-19
19871987-03-161987-12-12
19881988-02-281988-11-27
19891989-01-081989-11-28
19901990-01-191990-11-28
19911991-01-301991-11-20
19921992-03-071992-11-04
19931993-02-161993-12-11
19941994-02-091994-12-09
19951995-02-111995-12-06
19961996-01-241996-12-13
19971997-01-041997-11-06
19981998-02-101998-12-20
20022002-01-242002-12-31
20032003-02-042003-11-04
20042004-03-052004-11-30
20052005-01-062005-12-28
20062006-01-022006-11-30
20072007-02-212007-12-22

Every Fixed Threshold

Fixed thresholds at Zapata 1 S
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days372631909197
35 C (95 F): Days37172198071
40 C (104 F): Days346119809
45 C (113 F): Days4219982
90 F (32.2 C): Days372251909154
100 F (37.8 C): Days37131198012
110 F (43.3 C): Days8919091
0 C (32 F): Ice days (max1119891
0 C (32 F): Frost days (min321519892
20 C (68 F): Tropical nights (min361892006175
25 C (77 F): Days with min3491199823
10 mm (0.39 in): Days with 10 mm or more rain3629200415
25 mm (0.98 in): Days with 25 mm or more rain361219718
50 mm (1.97 in): Days with 50 mm or more rain27419663
100 mm (3.94 in): Days with 100 mm or more rain5119661
10 cm (3.9 in): Days with 10 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 1909.

Download the Data

  • Data for Zapata 1 S 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).