El Mayor Weather Records (MXN00002020)
Record envelope, standing records and threshold days for El Mayor (MXN00002020), Mexico, with 44 years of record.
Key Facts for El Mayor
- El Mayor (MXN00002020) is a weather station in Mexico at 32.12 latitude and -115.27 longitude, 15 m (49 ft) above sea level.
- The station reports from 1969 to 2012, 44 years of record.
- 1,464 records set at El Mayor still stand.
- Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
- El Mayor tied a daily record low minimum temperature of 8.9 C (48.0 F) on 14 October 2012.
About the Station
- Location: Mexico, 32.12 latitude, -115.27 longitude.
- Elevation: 15 m (49 ft).
- Period of record: 1969 to 2012, 44 years.
- Eligible elements: tmax, tmin, prcp.
Daily Record Envelope and 2026
0 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 32.8 C (91.0 F) | -8.3 C (17.1 F) | n/a | n/a |
| Feb | 37.8 C (100.0 F) | -2.2 C (28.0 F) | n/a | n/a |
| Mar | 40.0 C (104.0 F) | 0.0 C (32.0 F) | n/a | n/a |
| Apr | 42.8 C (109.0 F) | 0.6 C (33.1 F) | n/a | n/a |
| May | 50.0 C (122.0 F) | 0.6 C (33.1 F) | n/a | n/a |
| Jun | 50.0 C (122.0 F) | 5.6 C (42.1 F) | n/a | n/a |
| Jul | 50.6 C (123.1 F) | 7.8 C (46.0 F) | n/a | n/a |
| Aug | 50.0 C (122.0 F) | 8.9 C (48.0 F) | n/a | n/a |
| Sep | 50.0 C (122.0 F) | 7.8 C (46.0 F) | n/a | n/a |
| Oct | 48.9 C (120.0 F) | 1.7 C (35.1 F) | n/a | n/a |
| Nov | 43.9 C (111.0 F) | 0.0 C (32.0 F) | n/a | n/a |
| Dec | 32.8 C (91.0 F) | -5.0 C (23.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1969 | 54 |
| 1970 | 45 |
| 1971 | 62 |
| 1972 | 58 |
| 1973 | 21 |
| 1974 | 2 |
| 1975 | 22 |
| 1976 | 17 |
| 1982 | 75 |
| 1983 | 28 |
| 1984 | 4 |
| 1985 | 45 |
| 1986 | 48 |
| 1987 | 45 |
| 1988 | 22 |
| 1989 | 40 |
| 1990 | 39 |
| 1991 | 30 |
| 1992 | 4 |
| 1995 | 9 |
| 1996 | 50 |
| 1997 | 49 |
| 1998 | 128 |
| 1999 | 103 |
| 2000 | 93 |
| 2001 | 54 |
| 2002 | 36 |
| 2003 | 68 |
| 2004 | 20 |
| 2005 | 24 |
| 2006 | 36 |
| 2007 | 26 |
| 2008 | 25 |
| 2009 | 34 |
| 2010 | 23 |
| 2011 | 17 |
| 2012 | 8 |
Wettest Day of Each Month
Oct: 137.9 mm (5.4 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 57.9 mm (2.3 in) | 20 January 2010 |
| Feb | 30.0 mm (1.2 in) | 2 February 1983 |
| Mar | 31.0 mm (1.2 in) | 27 March 1992 |
| Apr | 18.3 mm (0.7 in) | 15 April 1988 |
| May | 0.0 mm (0.00 in) | 1 May 1969 |
| Jun | 3.8 mm (0.15 in) | 6 June 1997 |
| Jul | 29.0 mm (1.1 in) | 5 July 2001 |
| Aug | 31.8 mm (1.3 in) | 16 August 1983 |
| Sep | 68.3 mm (2.7 in) | 22 September 1997 |
| Oct | 137.9 mm (5.4 in) | 5 October 1972 |
| Nov | 41.9 mm (1.6 in) | 9 November 1969 |
| Dec | 43.9 mm (1.7 in) | 8 December 1982 |
Period of Record Coverage
1969 to 2012| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1969 | 362 | 99% | Yes |
| 1970 | 363 | 99% | Yes |
| 1971 | 339 | 93% | Yes |
| 1972 | 363 | 99% | Yes |
| 1973 | 364 | 100% | Yes |
| 1974 | 151 | 41% | No |
| 1975 | 325 | 89% | No |
| 1976 | 183 | 50% | No |
| 1982 | 362 | 99% | Yes |
| 1983 | 304 | 83% | No |
| 1984 | 196 | 54% | No |
| 1985 | 360 | 99% | Yes |
| 1986 | 359 | 98% | Yes |
| 1987 | 345 | 95% | Yes |
| 1988 | 356 | 97% | Yes |
| 1989 | 347 | 95% | Yes |
| 1990 | 323 | 88% | No |
| 1991 | 348 | 95% | Yes |
| 1992 | 58 | 16% | No |
| 1995 | 144 | 39% | No |
| 1996 | 147 | 40% | No |
| 1997 | 321 | 88% | No |
| 1998 | 273 | 75% | No |
| 1999 | 219 | 60% | No |
| 2000 | 352 | 96% | Yes |
| 2001 | 357 | 98% | Yes |
| 2002 | 303 | 83% | No |
| 2003 | 353 | 97% | Yes |
| 2004 | 362 | 99% | Yes |
| 2005 | 361 | 99% | Yes |
| 2006 | 362 | 99% | Yes |
| 2007 | 362 | 99% | Yes |
| 2008 | 331 | 90% | Yes |
| 2009 | 364 | 100% | Yes |
| 2010 | 362 | 99% | Yes |
| 2011 | 361 | 99% | Yes |
| 2012 | 305 | 83% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 14 October 2012 | El Mayor, MX | daily low min (Tie) | 8.9 C (48.0 F) | tie | 8 years | 1 of 100 (Routine) |
| 4 October 2012 | El Mayor, MX | daily high max (Tie) | 42.8 C (109.0 F) | tie | 15 years | 2 of 100 (Routine) |
| 9 September 2012 | El Mayor, MX | daily rain | 16.8 mm (0.7 in) | 16.0 mm (0.6 in) | 4 years | 20 of 100 (Routine) |
| 22 August 2012 | El Mayor, MX | daily low min (Tie) | 10.0 C (50.0 F) | tie | 12 years | 1 of 100 (Routine) |
| 19 August 2012 | El Mayor, MX | monthly high max (Tie) | 50.0 C (122.0 F) | tie | 41 years | 6 of 100 (Routine) |
| 16 August 2012 | El Mayor, MX | daily low min (Tie) | 10.6 C (51.1 F) | tie | 11 years | 1 of 100 (Routine) |
| 13 August 2012 | El Mayor, MX | daily low min (Tie) | 10.0 C (50.0 F) | tie | 10 years | 1 of 100 (Routine) |
| 7 August 2012 | El Mayor, MX | daily low max | 37.8 C (100.0 F) | 1.1 C (2.0 F) | 30 years | 15 of 100 (Routine) |
| 7 August 2012 | El Mayor, MX | daily low min (Tie) | 10.0 C (50.0 F) | tie | 6 years | 1 of 100 (Routine) |
| 4 August 2012 | El Mayor, MX | monthly low min (Tie) | 8.9 C (48.0 F) | tie | 0 years | 3 of 100 (Routine) |
| 2 August 2012 | El Mayor, MX | monthly high max (Tie) | 50.0 C (122.0 F) | tie | 41 years | 6 of 100 (Routine) |
| 30 July 2012 | El Mayor, MX | daily low min (Tie) | 10.0 C (50.0 F) | tie | 5 years | 1 of 100 (Routine) |
| 29 July 2012 | El Mayor, MX | daily low min (Tie) | 10.6 C (51.1 F) | tie | 4 years | 1 of 100 (Routine) |
| 25 July 2012 | El Mayor, MX | daily low min (Tie) | 10.0 C (50.0 F) | tie | 3 years | 1 of 100 (Routine) |
| 20 July 2012 | El Mayor, MX | daily low min (Tie) | 10.0 C (50.0 F) | tie | 14 years | 2 of 100 (Routine) |
| 16 July 2012 | El Mayor, MX | daily low min (Tie) | 10.0 C (50.0 F) | tie | 1 year | 1 of 100 (Routine) |
| 14 July 2012 | El Mayor, MX | daily low min | 8.9 C (48.0 F) | 1.1 C (2.0 F) | 9 years | 7 of 100 (Routine) |
| 9 July 2012 | El Mayor, MX | daily low min | 8.9 C (48.0 F) | 1.1 C (2.0 F) | 3 years | 5 of 100 (Routine) |
| 6 July 2012 | El Mayor, MX | daily low min (Tie) | 10.0 C (50.0 F) | tie | 12 years | 1 of 100 (Routine) |
| 1 July 2012 | El Mayor, MX | daily low min (Tie) | 10.0 C (50.0 F) | tie | 1 year | 1 of 100 (Routine) |
Climate Trend
20 complete years, 1969 to 2011| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1969 | 21.9 C | +0.66 C |
| 1970 | 21.8 C | +0.61 C |
| 1971 | 20.9 C | -0.35 C |
| 1972 | 21.5 C | +0.29 C |
| 1973 | 22.1 C | +0.84 C |
| 1982 | 20.6 C | -0.65 C |
| 1985 | 21.2 C | +0.01 C |
| 1986 | 23.4 C | +2.16 C |
| 1988 | 23.4 C | +2.16 C |
| 1991 | 23.0 C | +1.73 C |
| 2000 | 18.8 C | -2.39 C |
| 2001 | 19.4 C | -1.84 C |
| 2003 | 21.9 C | +0.68 C |
| 2004 | 19.6 C | -1.63 C |
| 2005 | 20.4 C | -0.84 C |
| 2006 | 21.4 C | +0.16 C |
| 2007 | 19.4 C | -1.79 C |
| 2009 | 21.9 C | +0.66 C |
| 2010 | 21.1 C | -0.08 C |
| 2011 | 20.8 C | -0.41 C |
This station does not have enough complete years (30 are needed) to fit a temperature trend.
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1969 to 2012| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 50.6 C (123.1 F) | 2001 | 49.4 C (120.9 F) | 37 |
| Coldest night (TNn) | -8.3 C (17.1 F) | 1972 | 0.6 C (33.1 F) | 37 |
| Wettest day (Rx1day) | 137.9 mm (5.4 in) | 1972 | 16.8 mm (0.7 in) | 37 |
| Wettest five days (Rx5day) | 145.8 mm (5.7 in) | 1972 | 17.6 mm (0.7 in) | 37 |
| Longest dry spell (CDD) | 365 days | 2009 | 129 days | 37 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1969 | 48.9 C (120.0 F) |
| 1970 | 45.6 C (114.1 F) |
| 1971 | 50.0 C (122.0 F) |
| 1972 | 47.8 C (118.0 F) |
| 1973 | 47.8 C (118.0 F) |
| 1974 | 40.0 C (104.0 F) |
| 1975 | 46.7 C (116.1 F) |
| 1976 | 49.4 C (120.9 F) |
| 1982 | 50.0 C (122.0 F) |
| 1983 | 46.7 C (116.1 F) |
| 1984 | 43.9 C (111.0 F) |
| 1985 | 46.7 C (116.1 F) |
| 1986 | 45.6 C (114.1 F) |
| 1987 | 46.7 C (116.1 F) |
| 1988 | 45.6 C (114.1 F) |
| 1989 | 46.7 C (116.1 F) |
| 1990 | 48.9 C (120.0 F) |
| 1991 | 45.6 C (114.1 F) |
| 1992 | 47.8 C (118.0 F) |
| 1995 | 50.0 C (122.0 F) |
| 1996 | 47.8 C (118.0 F) |
| 1997 | 48.9 C (120.0 F) |
| 1998 | 50.0 C (122.0 F) |
| 1999 | 50.0 C (122.0 F) |
| 2000 | 50.0 C (122.0 F) |
| 2001 | 50.6 C (123.1 F) |
| 2002 | 50.0 C (122.0 F) |
| 2003 | 50.0 C (122.0 F) |
| 2004 | 50.0 C (122.0 F) |
| 2005 | 50.0 C (122.0 F) |
| 2006 | 50.0 C (122.0 F) |
| 2007 | 50.0 C (122.0 F) |
| 2008 | 50.0 C (122.0 F) |
| 2009 | 50.0 C (122.0 F) |
| 2010 | 50.0 C (122.0 F) |
| 2011 | 50.0 C (122.0 F) |
| 2012 | 50.0 C (122.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1969 | 0.0 C (32.0 F) |
| 1970 | -3.3 C (26.1 F) |
| 1971 | -5.0 C (23.0 F) |
| 1972 | -8.3 C (17.1 F) |
| 1973 | -1.1 C (30.0 F) |
| 1974 | 1.7 C (35.1 F) |
| 1975 | -3.3 C (26.1 F) |
| 1976 | -5.0 C (23.0 F) |
| 1982 | 0.0 C (32.0 F) |
| 1983 | 0.6 C (33.1 F) |
| 1984 | 0.6 C (33.1 F) |
| 1985 | 0.6 C (33.1 F) |
| 1986 | 2.8 C (37.0 F) |
| 1987 | -2.2 C (28.0 F) |
| 1988 | -3.3 C (26.1 F) |
| 1989 | 0.0 C (32.0 F) |
| 1990 | -4.4 C (24.1 F) |
| 1991 | 0.0 C (32.0 F) |
| 1992 | 8.9 C (48.0 F) |
| 1995 | 6.7 C (44.1 F) |
| 1996 | 1.7 C (35.1 F) |
| 1997 | 1.7 C (35.1 F) |
| 1998 | 0.6 C (33.1 F) |
| 1999 | 0.0 C (32.0 F) |
| 2000 | 0.6 C (33.1 F) |
| 2001 | 0.6 C (33.1 F) |
| 2002 | 1.7 C (35.1 F) |
| 2003 | 0.6 C (33.1 F) |
| 2004 | 0.0 C (32.0 F) |
| 2005 | 1.7 C (35.1 F) |
| 2006 | 0.6 C (33.1 F) |
| 2007 | 0.0 C (32.0 F) |
| 2008 | 0.6 C (33.1 F) |
| 2009 | 0.6 C (33.1 F) |
| 2010 | 0.6 C (33.1 F) |
| 2011 | 1.7 C (35.1 F) |
| 2012 | 1.7 C (35.1 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1969 | 41.9 mm (1.6 in) |
| 1970 | 9.4 mm (0.37 in) |
| 1971 | 29.0 mm (1.1 in) |
| 1972 | 137.9 mm (5.4 in) |
| 1973 | 8.9 mm (0.35 in) |
| 1974 | 13.0 mm (0.5 in) |
| 1975 | 5.8 mm (0.23 in) |
| 1976 | 21.8 mm (0.9 in) |
| 1982 | 43.9 mm (1.7 in) |
| 1983 | 31.8 mm (1.3 in) |
| 1984 | 18.8 mm (0.7 in) |
| 1985 | 19.3 mm (0.8 in) |
| 1986 | 10.2 mm (0.4 in) |
| 1987 | 10.2 mm (0.4 in) |
| 1988 | 18.3 mm (0.7 in) |
| 1989 | 11.4 mm (0.4 in) |
| 1990 | 2.8 mm (0.11 in) |
| 1991 | 45.2 mm (1.8 in) |
| 1992 | 31.0 mm (1.2 in) |
| 1995 | 27.9 mm (1.1 in) |
| 1996 | 14.0 mm (0.6 in) |
| 1997 | 68.3 mm (2.7 in) |
| 1998 | 24.9 mm (1.0 in) |
| 1999 | 0.0 mm (0.00 in) |
| 2000 | 8.9 mm (0.35 in) |
| 2001 | 29.0 mm (1.1 in) |
| 2002 | 7.9 mm (0.31 in) |
| 2003 | 9.9 mm (0.39 in) |
| 2004 | 21.8 mm (0.9 in) |
| 2005 | 15.0 mm (0.6 in) |
| 2006 | 9.9 mm (0.39 in) |
| 2007 | 15.7 mm (0.6 in) |
| 2008 | 39.9 mm (1.6 in) |
| 2009 | 0.0 mm (0.00 in) |
| 2010 | 57.9 mm (2.3 in) |
| 2011 | 4.8 mm (0.19 in) |
| 2012 | 16.8 mm (0.7 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1969 | 46.2 mm (1.8 in) |
| 1970 | 9.4 mm (0.37 in) |
| 1971 | 29.0 mm (1.1 in) |
| 1972 | 145.8 mm (5.7 in) |
| 1973 | 10.7 mm (0.4 in) |
| 1974 | 13.8 mm (0.5 in) |
| 1975 | 7.6 mm (0.30 in) |
| 1976 | 25.6 mm (1.0 in) |
| 1982 | 73.9 mm (2.9 in) |
| 1983 | 72.7 mm (2.9 in) |
| 1984 | 24.6 mm (1.0 in) |
| 1985 | 19.6 mm (0.8 in) |
| 1986 | 10.2 mm (0.4 in) |
| 1987 | 17.6 mm (0.7 in) |
| 1988 | 19.1 mm (0.8 in) |
| 1989 | 11.4 mm (0.4 in) |
| 1990 | 2.8 mm (0.11 in) |
| 1991 | 48.2 mm (1.9 in) |
| 1992 | 55.9 mm (2.2 in) |
| 1995 | 27.9 mm (1.1 in) |
| 1996 | 14.0 mm (0.6 in) |
| 1997 | 68.3 mm (2.7 in) |
| 1998 | 24.9 mm (1.0 in) |
| 1999 | 0.0 mm (0.00 in) |
| 2000 | 8.9 mm (0.35 in) |
| 2001 | 29.0 mm (1.1 in) |
| 2002 | 7.9 mm (0.31 in) |
| 2003 | 9.9 mm (0.39 in) |
| 2004 | 21.8 mm (0.9 in) |
| 2005 | 15.0 mm (0.6 in) |
| 2006 | 9.9 mm (0.39 in) |
| 2007 | 15.7 mm (0.6 in) |
| 2008 | 42.7 mm (1.7 in) |
| 2009 | 0.0 mm (0.00 in) |
| 2010 | 69.8 mm (2.7 in) |
| 2011 | 4.8 mm (0.19 in) |
| 2012 | 16.8 mm (0.7 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1969 | 233 days |
| 1970 | 97 days |
| 1971 | 79 days |
| 1972 | 127 days |
| 1973 | 158 days |
| 1974 | 85 days |
| 1975 | 159 days |
| 1976 | 61 days |
| 1982 | 136 days |
| 1983 | 99 days |
| 1984 | 56 days |
| 1985 | 208 days |
| 1986 | 160 days |
| 1987 | 99 days |
| 1988 | 90 days |
| 1989 | 142 days |
| 1990 | 92 days |
| 1991 | 129 days |
| 1992 | 25 days |
| 1995 | 68 days |
| 1996 | 109 days |
| 1997 | 91 days |
| 1998 | 41 days |
| 1999 | 74 days |
| 2000 | 211 days |
| 2001 | 121 days |
| 2002 | 247 days |
| 2003 | 114 days |
| 2004 | 200 days |
| 2005 | 150 days |
| 2006 | 161 days |
| 2007 | 239 days |
| 2008 | 149 days |
| 2009 | 365 days |
| 2010 | 211 days |
| 2011 | 163 days |
| 2012 | 229 days |
Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.
Download the Data
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). Records are computed by this site and are not official.
Data as of . Last revised (2025-12-31).