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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Tonameca Threshold Days by Year (MXN00020303)

12 fixed thresholds counted per year at Tonameca (MXN00020303): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Tonameca Thresholds

  • Tonameca: days with a maximum temperature at or above 30 C (86 F) in 23 years, most in 1982 with 364.
  • Tonameca: days with a maximum temperature at or above 90 F (32.2 C) in 23 years, most in 1990 with 321.
  • Tonameca: nights with a minimum temperature at or above 20 C (68 F) in 23 years, most in 1982 with 231.
  • Tonameca: days with 10 mm (0.39 in) or more of precipitation in 23 years, most in 2000 with 29.
  • 12 fixed thresholds have at least one qualifying day at Tonameca.
23 years with a qualifying day
Days at or above 30 C (86 F) per year at Tonameca Days per year at Tonameca with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 364 in 1982. 01002003004001982: 3641983: 3611984: 3531985: 3271986: 3551987: 3581988: 3521989: 3401990: 3561992: 3591993: 3171994: 3582000: 2572001: 2792002: 2702003: 3182004: 3062005: 2032006: 2472007: 2542008: 2182009: 2952011: 18519821985198819922000200320062009
Days per year at Tonameca with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 364 in 1982.
Days at or above 30 C (86 F) per year at Tonameca
YearDaysDecade average
1982364351.3
1983361351.3
1984353351.3
1985327351.3
1986355351.3
1987358351.3
1988352351.3
1989340351.3
1990356347.5
1992359347.5
1993317347.5
1994358347.5
2000257264.7
2001279264.7
2002270264.7
2003318264.7
2004306264.7
2005203264.7
2006247264.7
2007254264.7
2008218264.7
2009295264.7
2011185185
First to last qualifying date each year at Tonameca For each year, a bar from the first to the last day at Tonameca meeting 30 C (86 F). 1982: 1 January 1982 to 31 December 19821983: 1 January 1983 to 31 December 19831984: 1 January 1984 to 31 December 19841985: 1 January 1985 to 31 December 19851986: 1 January 1986 to 31 December 19861987: 1 January 1987 to 31 December 19871988: 1 January 1988 to 31 December 19881989: 1 January 1989 to 31 December 19891990: 1 January 1990 to 31 December 19901992: 1 January 1992 to 31 December 19921993: 1 February 1993 to 31 December 19931994: 1 January 1994 to 31 December 19942000: 1 January 2000 to 30 December 20002001: 11 January 2001 to 26 December 20012002: 14 January 2002 to 31 December 20022003: 1 January 2003 to 31 December 20032004: 1 January 2004 to 27 December 20042005: 1 January 2005 to 28 December 20052006: 2 January 2006 to 31 December 20062007: 1 January 2007 to 31 December 20072008: 1 January 2008 to 31 December 20082009: 1 January 2009 to 31 December 20092011: 1 January 2011 to 30 December 201119821985198819922000200320062009JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Tonameca meeting 30 C (86 F).
First to last qualifying date each year at Tonameca
YearFirst dateLast date
19821982-01-011982-12-31
19831983-01-011983-12-31
19841984-01-011984-12-31
19851985-01-011985-12-31
19861986-01-011986-12-31
19871987-01-011987-12-31
19881988-01-011988-12-31
19891989-01-011989-12-31
19901990-01-011990-12-31
19921992-01-011992-12-31
19931993-02-011993-12-31
19941994-01-011994-12-31
20002000-01-012000-12-30
20012001-01-112001-12-26
20022002-01-142002-12-31
20032003-01-012003-12-31
20042004-01-012004-12-27
20052005-01-012005-12-28
20062006-01-022006-12-31
20072007-01-012007-12-31
20082008-01-012008-12-31
20092009-01-012009-12-31
20112011-01-012011-12-30

Every Fixed Threshold

Fixed thresholds at Tonameca
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days233641982185
35 C (95 F): Days1916519901
40 C (104 F): Days1419824
90 F (32.2 C): Days23321199015
100 F (37.8 C): Days112619821
20 C (68 F): Tropical nights (min23231198226
25 C (77 F): Days with min3719823
10 mm (0.39 in): Days with 10 mm or more rain2329200025
25 mm (0.98 in): Days with 25 mm or more rain2316198410
50 mm (1.97 in): Days with 50 mm or more rain23820002
100 mm (3.94 in): Days with 100 mm or more rain9320001
200 mm (7.87 in): Days with 200 mm or more rain10n/a2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1982.

Download the Data

  • Data for Tonameca 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).