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Built 2026-10-19 (19 October 2026)

San Juan Londo Threshold Days by Year (MXN00003099)

15 fixed thresholds counted per year at San Juan Londo (MXN00003099): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for San Juan Londo Thresholds

  • San Juan Londo: days with a maximum temperature at or above 30 C (86 F) in 30 years, most in 1986 with 288.
  • San Juan Londo: days with a maximum temperature at or above 35 C (95 F) in 30 years, most in 1986 with 189.
  • San Juan Londo: days with a maximum temperature at or above 40 C (104 F) in 30 years, most in 1985 with 80.
  • San Juan Londo: days with a maximum temperature at or above 90 F (32.2 C) in 30 years, most in 1986 with 247.
  • 15 fixed thresholds have at least one qualifying day at San Juan Londo.
30 years with a qualifying day
Days at or above 30 C (86 F) per year at San Juan Londo Days per year at San Juan Londo with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 288 in 1986. 01002003001975: 2301976: 2381983: 1941984: 2481985: 2551986: 2881987: 2761988: 2451990: 2341991: 2331992: 2121993: 2321994: 2361995: 2521996: 2561997: 2301998: 2231999: 2452000: 2302002: 2202003: 2402004: 1902005: 2302006: 2552007: 2452008: 2422009: 2402010: 2282011: 2492012: 2481975198419871991199419972000200420072010
Days per year at San Juan Londo with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 288 in 1986.
Days at or above 30 C (86 F) per year at San Juan Londo
YearDaysDecade average
1975230234
1976238234
1983194251
1984248251
1985255251
1986288251
1987276251
1988245251
1990234235.3
1991233235.3
1992212235.3
1993232235.3
1994236235.3
1995252235.3
1996256235.3
1997230235.3
1998223235.3
1999245235.3
2000230232.4
2002220232.4
2003240232.4
2004190232.4
2005230232.4
2006255232.4
2007245232.4
2008242232.4
2009240232.4
2010228241.7
2011249241.7
2012248241.7
First to last qualifying date each year at San Juan Londo For each year, a bar from the first to the last day at San Juan Londo meeting 30 C (86 F). 1975: 15 January 1975 to 9 December 19751976: 17 January 1976 to 9 December 19761983: 16 January 1983 to 20 November 19831984: 9 February 1984 to 21 December 19841985: 16 February 1985 to 29 December 19851986: 1 January 1986 to 9 December 19861987: 4 January 1987 to 24 December 19871988: 12 January 1988 to 23 December 19881990: 11 January 1990 to 19 November 19901991: 5 February 1991 to 30 November 19911992: 13 March 1992 to 20 November 19921993: 19 February 1993 to 8 December 19931994: 3 January 1994 to 9 December 19941995: 4 February 1995 to 13 December 19951996: 8 January 1996 to 13 December 19961997: 3 January 1997 to 26 November 19971998: 26 January 1998 to 29 December 19981999: 6 January 1999 to 2 December 19992000: 14 January 2000 to 8 December 20002002: 15 February 2002 to 26 November 20022003: 18 January 2003 to 21 November 20032004: 7 March 2004 to 14 December 20042005: 9 March 2005 to 25 December 20052006: 3 January 2006 to 16 December 20062007: 6 February 2007 to 21 November 20072008: 4 January 2008 to 7 December 20082009: 20 January 2009 to 21 November 20092010: 16 February 2010 to 14 December 20102011: 17 January 2011 to 31 December 20112012: 3 January 2012 to 22 December 201219751985199019941998200320072011JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at San Juan Londo meeting 30 C (86 F).
First to last qualifying date each year at San Juan Londo
YearFirst dateLast date
19751975-01-151975-12-09
19761976-01-171976-12-09
19831983-01-161983-11-20
19841984-02-091984-12-21
19851985-02-161985-12-29
19861986-01-011986-12-09
19871987-01-041987-12-24
19881988-01-121988-12-23
19901990-01-111990-11-19
19911991-02-051991-11-30
19921992-03-131992-11-20
19931993-02-191993-12-08
19941994-01-031994-12-09
19951995-02-041995-12-13
19961996-01-081996-12-13
19971997-01-031997-11-26
19981998-01-261998-12-29
19991999-01-061999-12-02
20002000-01-142000-12-08
20022002-02-152002-11-26
20032003-01-182003-11-21
20042004-03-072004-12-14
20052005-03-092005-12-25
20062006-01-032006-12-16
20072007-02-062007-11-21
20082008-01-042008-12-07
20092009-01-202009-11-21
20102010-02-162010-12-14
20112011-01-172011-12-31
20122012-01-032012-12-22

Every Fixed Threshold

Fixed thresholds at San Juan Londo
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days302881986248
35 C (95 F): Days301891986152
40 C (104 F): Days3080198520
45 C (113 F): Days5419871
90 F (32.2 C): Days302471986180
100 F (37.8 C): Days30128198866
110 F (43.3 C): Days141119871
0 C (32 F): Frost days (min12420074
20 C (68 F): Tropical nights (min301312008121
25 C (77 F): Days with min3067200856
10 mm (0.39 in): Days with 10 mm or more rain281619849
25 mm (0.98 in): Days with 25 mm or more rain23619834
50 mm (1.97 in): Days with 50 mm or more rain14420124
100 mm (3.94 in): Days with 100 mm or more rain7119971
200 mm (7.87 in): Days with 200 mm or more rain1120061

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1975.

Download the Data

  • Data for San Juan Londo 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).