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

Rio Santiago Threshold Days by Year (MXN00012158)

8 fixed thresholds counted per year at Rio Santiago (MXN00012158): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Rio Santiago Thresholds

  • Rio Santiago: days with 10 mm (0.39 in) or more of precipitation in 26 years, most in 2005 with 82.
  • Rio Santiago: days with 25 mm (0.98 in) or more of precipitation in 24 years, most in 2005 with 45.
  • Rio Santiago: days with 50 mm (1.97 in) or more of precipitation in 18 years, most in 1981 with 17.
  • Rio Santiago: days with a maximum temperature at or above 30 C (86 F) in 17 years, most in 2001 with 348.
  • 8 fixed thresholds have at least one qualifying day at Rio Santiago.
17 years with a qualifying day
Days at or above 30 C (86 F) per year at Rio Santiago Days per year at Rio Santiago with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 348 in 2001. 01002003004001973: 1471981: 1301988: 3241994: 1641995: 1001996: 1611998: 631999: 1492000: 3112001: 3482002: 2892003: 1692004: 1372005: 1672007: 1112009: 1222010: 135197319881995199820002002200420072010
Days per year at Rio Santiago with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 348 in 2001.
Days at or above 30 C (86 F) per year at Rio Santiago
YearDaysDecade average
1973147147
1981130227
1988324227
1994164127.4
1995100127.4
1996161127.4
199863127.4
1999149127.4
2000311206.8
2001348206.8
2002289206.8
2003169206.8
2004137206.8
2005167206.8
2007111206.8
2009122206.8
2010135135
First to last qualifying date each year at Rio Santiago For each year, a bar from the first to the last day at Rio Santiago meeting 30 C (86 F). 1973: 5 January 1973 to 19 December 19731981: 29 January 1981 to 31 December 19811988: 2 January 1988 to 31 December 19881994: 1 February 1994 to 20 December 19941995: 2 February 1995 to 31 December 19951996: 9 January 1996 to 31 December 19961998: 15 January 1998 to 25 November 19981999: 11 January 1999 to 31 December 19992000: 10 January 2000 to 31 December 20002001: 2 January 2001 to 31 December 20012002: 1 January 2002 to 29 December 20022003: 2 January 2003 to 31 December 20032004: 1 January 2004 to 27 November 20042005: 29 January 2005 to 31 December 20052007: 29 January 2007 to 30 November 20072009: 4 March 2009 to 30 December 20092010: 4 January 2010 to 29 November 2010197319941998200120042009JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Rio Santiago meeting 30 C (86 F).
First to last qualifying date each year at Rio Santiago
YearFirst dateLast date
19731973-01-051973-12-19
19811981-01-291981-12-31
19881988-01-021988-12-31
19941994-02-011994-12-20
19951995-02-021995-12-31
19961996-01-091996-12-31
19981998-01-151998-11-25
19991999-01-111999-12-31
20002000-01-102000-12-31
20012001-01-022001-12-31
20022002-01-012002-12-29
20032003-01-022003-12-31
20042004-01-012004-11-27
20052005-01-292005-12-31
20072007-01-292007-11-30
20092009-03-042009-12-30
20102010-01-042010-11-29

Every Fixed Threshold

Fixed thresholds at Rio Santiago
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days173482001135
35 C (95 F): Days72119944
90 F (32.2 C): Days1614319881
20 C (68 F): Tropical nights (min1033319961
10 mm (0.39 in): Days with 10 mm or more rain2682200540
25 mm (0.98 in): Days with 25 mm or more rain2445200514
50 mm (1.97 in): Days with 50 mm or more rain181719815
100 mm (3.94 in): Days with 100 mm or more rain6519965

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1973.

Download the Data

  • Data for Rio Santiago 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).