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

San Marcos Threshold Days by Year (MXN00010070)

10 fixed thresholds counted per year at San Marcos (MXN00010070): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for San Marcos Thresholds

  • San Marcos: days with 10 mm (0.39 in) or more of precipitation in 59 years, most in 1943 with 25.
  • San Marcos: days with 25 mm (0.98 in) or more of precipitation in 51 years, most in 2003 with 10.
  • San Marcos: days with 50 mm (1.97 in) or more of precipitation in 16 years, most in 1943 with 1.
  • San Marcos: days with a maximum temperature at or above 30 C (86 F) in 3 years, most in 2005 with 161.
  • 10 fixed thresholds have at least one qualifying day at San Marcos.
3 years with a qualifying day
Days at or above 30 C (86 F) per year at San Marcos Days per year at San Marcos with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 161 in 2005. 0501001502002002: 1602003: 1272005: 161200220032005
Days per year at San Marcos with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 161 in 2005.
Days at or above 30 C (86 F) per year at San Marcos
YearDaysDecade average
2002160149.3
2003127149.3
2005161149.3
First to last qualifying date each year at San Marcos For each year, a bar from the first to the last day at San Marcos meeting 30 C (86 F). 2002: 2 January 2002 to 11 November 20022003: 11 February 2003 to 12 November 20032005: 16 February 2005 to 13 November 2005200220032005JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at San Marcos meeting 30 C (86 F).
First to last qualifying date each year at San Marcos
YearFirst dateLast date
20022002-01-022002-11-11
20032003-02-112003-11-12
20052005-02-162005-11-13

Every Fixed Threshold

Fixed thresholds at San Marcos
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days31612005161
35 C (95 F): Days340200540
40 C (104 F): Days3320032
90 F (32.2 C): Days381200281
100 F (37.8 C): Days31020025
0 C (32 F): Frost days (min330200225
10 mm (0.39 in): Days with 10 mm or more rain5925194313
25 mm (0.98 in): Days with 25 mm or more rain511020032
50 mm (1.97 in): Days with 50 mm or more rain16119431
100 mm (3.94 in): Days with 100 mm or more rain1119431

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2002.

Download the Data

  • Data for San Marcos 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).