Cosio Weather Records (MXN00001088)
Record envelope, standing records and threshold days for Cosio (MXN00001088), Mexico, with 36 years of record.
Key Facts for Cosio
- Cosio (MXN00001088) is a weather station in Mexico at 22.35 latitude and -102.28 longitude, 2,023 m (6,636 ft) above sea level.
- The station reports from 1978 to 2013, 36 years of record.
- 1,464 records set at Cosio still stand.
- Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
- Cosio set a daily record precipitation of 18.3 mm (0.7 in) on 31 October 2013.
About the Station
- Location: Mexico, 22.35 latitude, -102.28 longitude.
- Elevation: 2,023 m (6,636 ft).
- Period of record: 1978 to 2013, 36 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 | 27.8 C (82.0 F) | -5.0 C (23.0 F) | n/a | n/a |
| Feb | 31.7 C (89.1 F) | -4.4 C (24.1 F) | n/a | n/a |
| Mar | 31.7 C (89.1 F) | -1.1 C (30.0 F) | n/a | n/a |
| Apr | 33.9 C (93.0 F) | 0.6 C (33.1 F) | n/a | n/a |
| May | 36.7 C (98.1 F) | 2.8 C (37.0 F) | n/a | n/a |
| Jun | 35.6 C (96.1 F) | 6.7 C (44.1 F) | n/a | n/a |
| Jul | 33.9 C (93.0 F) | 8.3 C (46.9 F) | n/a | n/a |
| Aug | 31.7 C (89.1 F) | 7.8 C (46.0 F) | n/a | n/a |
| Sep | 31.1 C (88.0 F) | 3.3 C (37.9 F) | n/a | n/a |
| Oct | 31.7 C (89.1 F) | 0.6 C (33.1 F) | n/a | n/a |
| Nov | 30.6 C (87.1 F) | -5.0 C (23.0 F) | n/a | n/a |
| Dec | 27.8 C (82.0 F) | -7.2 C (19.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1978 | 23 |
| 1979 | 83 |
| 1980 | 49 |
| 1981 | 31 |
| 1982 | 44 |
| 1983 | 65 |
| 1984 | 55 |
| 1985 | 49 |
| 1986 | 39 |
| 1987 | 49 |
| 1988 | 58 |
| 1989 | 35 |
| 1990 | 31 |
| 1991 | 65 |
| 1992 | 46 |
| 1993 | 10 |
| 1994 | 9 |
| 1995 | 101 |
| 1996 | 53 |
| 1997 | 84 |
| 1998 | 26 |
| 1999 | 26 |
| 2000 | 13 |
| 2001 | 34 |
| 2002 | 38 |
| 2003 | 45 |
| 2004 | 27 |
| 2005 | 32 |
| 2006 | 32 |
| 2007 | 28 |
| 2008 | 35 |
| 2009 | 43 |
| 2010 | 43 |
| 2011 | 31 |
| 2012 | 14 |
| 2013 | 18 |
All-Time Record Progression
1 new records| Date | Kind | Detail |
|---|---|---|
| 2011-05-25 | Record high maximum temperature | Record high maximum temperature 36.7 C (98.1 F) |
Wettest Day of Each Month
Aug: 74.9 mm (2.9 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 46.2 mm (1.8 in) | 16 January 1981 |
| Feb | 42.9 mm (1.7 in) | 2 February 2010 |
| Mar | 17.3 mm (0.7 in) | 28 March 2004 |
| Apr | 29.0 mm (1.1 in) | 13 April 1997 |
| May | 64.8 mm (2.6 in) | 28 May 2000 |
| Jun | 57.4 mm (2.3 in) | 11 June 2002 |
| Jul | 63.0 mm (2.5 in) | 18 July 2012 |
| Aug | 74.9 mm (2.9 in) | 16 August 2002 |
| Sep | 56.9 mm (2.2 in) | 14 September 2012 |
| Oct | 38.4 mm (1.5 in) | 6 October 1978 |
| Nov | 27.9 mm (1.1 in) | 3 November 2002 |
| Dec | 50.0 mm (2.0 in) | 2 December 1979 |
Period of Record Coverage
1978 to 2013| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1978 | 153 | 42% | No |
| 1979 | 364 | 100% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 365 | 100% | Yes |
| 1983 | 364 | 100% | Yes |
| 1984 | 365 | 100% | Yes |
| 1985 | 365 | 100% | Yes |
| 1986 | 334 | 92% | Yes |
| 1987 | 365 | 100% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 365 | 100% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 365 | 100% | Yes |
| 1992 | 366 | 100% | Yes |
| 1993 | 243 | 67% | No |
| 1994 | 365 | 100% | Yes |
| 1995 | 365 | 100% | Yes |
| 1996 | 366 | 100% | Yes |
| 1997 | 365 | 100% | Yes |
| 1998 | 184 | 50% | No |
| 1999 | 365 | 100% | Yes |
| 2000 | 366 | 100% | Yes |
| 2001 | 365 | 100% | Yes |
| 2002 | 365 | 100% | Yes |
| 2003 | 365 | 100% | Yes |
| 2004 | 366 | 100% | Yes |
| 2005 | 365 | 100% | Yes |
| 2006 | 364 | 100% | Yes |
| 2007 | 365 | 100% | Yes |
| 2008 | 365 | 100% | Yes |
| 2009 | 365 | 100% | Yes |
| 2010 | 365 | 100% | Yes |
| 2011 | 364 | 100% | Yes |
| 2012 | 366 | 100% | Yes |
| 2013 | 304 | 83% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 31 October 2013 | Cosio, MX | daily rain | 18.3 mm (0.7 in) | 13.5 mm (0.5 in) | 11 years | 20 of 100 (Routine) |
| 25 October 2013 | Cosio, MX | daily low min (Tie) | 3.9 C (39.0 F) | tie | 6 years | 1 of 100 (Routine) |
| 23 October 2013 | Cosio, MX | daily low min (Tie) | 5.6 C (42.1 F) | tie | 24 years | 2 of 100 (Routine) |
| 20 October 2013 | Cosio, MX | daily low max | 20.0 C (68.0 F) | 0.6 C (1.1 F) | 12 years | 8 of 100 (Routine) |
| 19 October 2013 | Cosio, MX | daily rain | 1.8 mm (0.07 in) | 1.5 mm (0.06 in) | 30 years | 13 of 100 (Routine) |
| 17 October 2013 | Cosio, MX | daily rain | 23.9 mm (0.9 in) | 18.1 mm (0.7 in) | 20 years | 20 of 100 (Routine) |
| 7 October 2013 | Cosio, MX | daily low max (Tie) | 20.0 C (68.0 F) | tie | 22 years | 2 of 100 (Routine) |
| 17 September 2013 | Cosio, MX | daily rain | 47.8 mm (1.9 in) | 35.9 mm (1.4 in) | 22 years | 46 of 100 (Notable) |
| 15 September 2013 | Cosio, MX | monthly low max (Tie) | 17.8 C (64.0 F) | tie | 29 years | 5 of 100 (Routine) |
| 4 September 2013 | Cosio, MX | daily low max (Tie) | 20.6 C (69.1 F) | tie | 24 years | 2 of 100 (Routine) |
| 27 August 2013 | Cosio, MX | daily low max (Tie) | 21.7 C (71.1 F) | tie | 24 years | 2 of 100 (Routine) |
| 26 August 2013 | Cosio, MX | daily low max | 21.7 C (71.1 F) | 1.1 C (2.0 F) | 16 years | 11 of 100 (Routine) |
| 21 August 2013 | Cosio, MX | daily low max | 21.7 C (71.1 F) | 1.1 C (2.0 F) | 24 years | 14 of 100 (Routine) |
| 9 August 2013 | Cosio, MX | daily high max | 30.6 C (87.1 F) | 0.6 C (1.1 F) | 3 years | 5 of 100 (Routine) |
| 8 August 2013 | Cosio, MX | monthly high max (Tie) | 31.7 C (89.1 F) | tie | 4 years | 3 of 100 (Routine) |
| 7 August 2013 | Cosio, MX | monthly high max (Tie) | 31.7 C (89.1 F) | tie | 4 years | 3 of 100 (Routine) |
| 22 July 2013 | Cosio, MX | daily rain (Tie) | 17.8 mm (0.7 in) | tie | 2 years | 0 of 100 (Routine) |
| 21 July 2013 | Cosio, MX | daily low max (Tie) | 21.7 C (71.1 F) | tie | 24 years | 2 of 100 (Routine) |
| 10 July 2013 | Cosio, MX | daily rain | 23.9 mm (0.9 in) | 2.1 mm (0.08 in) | 22 years | 10 of 100 (Routine) |
| 30 June 2013 | Cosio, MX | daily high max (Tie) | 30.6 C (87.1 F) | tie | 14 years | 1 of 100 (Routine) |
Climate Trend
31 complete years, 1979 to 2012| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1979 | 16.7 C | -0.47 C |
| 1980 | 17.0 C | -0.12 C |
| 1981 | 16.8 C | -0.32 C |
| 1982 | 17.4 C | +0.22 C |
| 1983 | 16.1 C | -1.05 C |
| 1984 | 16.3 C | -0.82 C |
| 1985 | 16.4 C | -0.71 C |
| 1987 | 16.7 C | -0.43 C |
| 1988 | 16.6 C | -0.57 C |
| 1989 | 17.0 C | -0.18 C |
| 1990 | 16.9 C | -0.29 C |
| 1991 | 16.6 C | -0.59 C |
| 1992 | 16.3 C | -0.86 C |
| 1994 | 16.9 C | -0.27 C |
| 1995 | 18.3 C | +1.17 C |
| 1996 | 17.3 C | +0.10 C |
| 1997 | 17.1 C | -0.04 C |
| 1999 | 17.8 C | +0.68 C |
| 2000 | 17.7 C | +0.51 C |
| 2001 | 17.5 C | +0.31 C |
| 2002 | 17.6 C | +0.40 C |
| 2003 | 17.7 C | +0.53 C |
| 2004 | 16.7 C | -0.50 C |
| 2005 | 17.7 C | +0.55 C |
| 2006 | 17.6 C | +0.47 C |
| 2007 | 17.7 C | +0.57 C |
| 2008 | 17.2 C | +0.06 C |
| 2009 | 17.9 C | +0.79 C |
| 2010 | 16.8 C | -0.32 C |
| 2011 | 18.0 C | +0.87 C |
| 2012 | 17.4 C | +0.27 C |
The annual mean temperature here has risen by 0.3 C (0.2 to 0.5) per decade over 1979 to 2012. In Fahrenheit: 0.6 F (0.3 to 0.9) per decade. The slope is a straight line fitted to 31 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.3 C (0.2 to 0.5) per decade | 0.6 F (0.3 to 0.9) per decade | 1979 to 2012 | 31 | Rise |
| Mean daily maximum | 0.5 C (0.3 to 0.8) per decade | 0.9 F (0.5 to 1.4) per decade | 1979 to 2012 | 31 | Rise |
| Mean daily minimum | 0.2 C (-0.1 to 0.4) per decade | 0.3 F (-0.1 to 0.7) per decade | 1979 to 2012 | 31 | Not clearly different from zero |
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
1978 to 2013| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 36.7 C (98.1 F) | 2011 | 33.9 C (93.0 F) | 36 |
| Coldest night (TNn) | -7.2 C (19.0 F) | 1997 | -2.2 C (28.0 F) | 36 |
| Wettest day (Rx1day) | 74.9 mm (2.9 in) | 2002 | 42.9 mm (1.7 in) | 36 |
| Wettest five days (Rx5day) | 148.2 mm (5.8 in) | 2000 | 70.9 mm (2.8 in) | 36 |
| Longest dry spell (CDD) | 176 days | 1996 | 93 days | 36 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1978 | 27.8 C (82.0 F) |
| 1979 | 32.8 C (91.0 F) |
| 1980 | 34.4 C (93.9 F) |
| 1981 | 33.3 C (91.9 F) |
| 1982 | 35.0 C (95.0 F) |
| 1983 | 35.0 C (95.0 F) |
| 1984 | 31.7 C (89.1 F) |
| 1985 | 33.3 C (91.9 F) |
| 1986 | 32.8 C (91.0 F) |
| 1987 | 31.7 C (89.1 F) |
| 1988 | 31.7 C (89.1 F) |
| 1989 | 33.9 C (93.0 F) |
| 1990 | 35.0 C (95.0 F) |
| 1991 | 33.9 C (93.0 F) |
| 1992 | 32.8 C (91.0 F) |
| 1993 | 32.8 C (91.0 F) |
| 1994 | 31.7 C (89.1 F) |
| 1995 | 32.8 C (91.0 F) |
| 1996 | 35.6 C (96.1 F) |
| 1997 | 33.9 C (93.0 F) |
| 1998 | 31.7 C (89.1 F) |
| 1999 | 33.9 C (93.0 F) |
| 2000 | 32.8 C (91.0 F) |
| 2001 | 32.8 C (91.0 F) |
| 2002 | 33.9 C (93.0 F) |
| 2003 | 35.6 C (96.1 F) |
| 2004 | 33.9 C (93.0 F) |
| 2005 | 35.6 C (96.1 F) |
| 2006 | 35.6 C (96.1 F) |
| 2007 | 33.9 C (93.0 F) |
| 2008 | 35.0 C (95.0 F) |
| 2009 | 35.0 C (95.0 F) |
| 2010 | 35.0 C (95.0 F) |
| 2011 | 36.7 C (98.1 F) |
| 2012 | 35.0 C (95.0 F) |
| 2013 | 33.9 C (93.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1978 | -0.6 C (30.9 F) |
| 1979 | -4.4 C (24.1 F) |
| 1980 | -1.1 C (30.0 F) |
| 1981 | -2.2 C (28.0 F) |
| 1982 | -1.1 C (30.0 F) |
| 1983 | -2.2 C (28.0 F) |
| 1984 | -0.6 C (30.9 F) |
| 1985 | -5.0 C (23.0 F) |
| 1986 | -3.3 C (26.1 F) |
| 1987 | -4.4 C (24.1 F) |
| 1988 | -4.4 C (24.1 F) |
| 1989 | 0.0 C (32.0 F) |
| 1990 | -2.8 C (27.0 F) |
| 1991 | -3.3 C (26.1 F) |
| 1992 | 0.0 C (32.0 F) |
| 1993 | 0.0 C (32.0 F) |
| 1994 | 0.0 C (32.0 F) |
| 1995 | 0.0 C (32.0 F) |
| 1996 | 0.6 C (33.1 F) |
| 1997 | -7.2 C (19.0 F) |
| 1998 | 1.7 C (35.1 F) |
| 1999 | -2.2 C (28.0 F) |
| 2000 | -2.2 C (28.0 F) |
| 2001 | -3.3 C (26.1 F) |
| 2002 | -1.1 C (30.0 F) |
| 2003 | -3.3 C (26.1 F) |
| 2004 | -5.0 C (23.0 F) |
| 2005 | -3.3 C (26.1 F) |
| 2006 | -4.4 C (24.1 F) |
| 2007 | 1.7 C (35.1 F) |
| 2008 | -3.3 C (26.1 F) |
| 2009 | -1.1 C (30.0 F) |
| 2010 | -2.2 C (28.0 F) |
| 2011 | -5.0 C (23.0 F) |
| 2012 | -1.1 C (30.0 F) |
| 2013 | -1.1 C (30.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1978 | 43.2 mm (1.7 in) |
| 1979 | 50.0 mm (2.0 in) |
| 1980 | 28.7 mm (1.1 in) |
| 1981 | 47.0 mm (1.9 in) |
| 1982 | 26.9 mm (1.1 in) |
| 1983 | 57.9 mm (2.3 in) |
| 1984 | 40.4 mm (1.6 in) |
| 1985 | 33.0 mm (1.3 in) |
| 1986 | 48.3 mm (1.9 in) |
| 1987 | 30.0 mm (1.2 in) |
| 1988 | 47.8 mm (1.9 in) |
| 1989 | 24.9 mm (1.0 in) |
| 1990 | 49.8 mm (2.0 in) |
| 1991 | 49.8 mm (2.0 in) |
| 1992 | 45.0 mm (1.8 in) |
| 1993 | 54.9 mm (2.2 in) |
| 1994 | 18.3 mm (0.7 in) |
| 1995 | 39.9 mm (1.6 in) |
| 1996 | 27.9 mm (1.1 in) |
| 1997 | 29.0 mm (1.1 in) |
| 1998 | 29.0 mm (1.1 in) |
| 1999 | 24.4 mm (1.0 in) |
| 2000 | 64.8 mm (2.6 in) |
| 2001 | 31.0 mm (1.2 in) |
| 2002 | 74.9 mm (2.9 in) |
| 2003 | 43.9 mm (1.7 in) |
| 2004 | 42.9 mm (1.7 in) |
| 2005 | 38.9 mm (1.5 in) |
| 2006 | 31.0 mm (1.2 in) |
| 2007 | 52.8 mm (2.1 in) |
| 2008 | 48.8 mm (1.9 in) |
| 2009 | 40.9 mm (1.6 in) |
| 2010 | 42.9 mm (1.7 in) |
| 2011 | 18.8 mm (0.7 in) |
| 2012 | 63.0 mm (2.5 in) |
| 2013 | 47.8 mm (1.9 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1978 | 88.9 mm (3.5 in) |
| 1979 | 75.6 mm (3.0 in) |
| 1980 | 40.4 mm (1.6 in) |
| 1981 | 74.7 mm (2.9 in) |
| 1982 | 51.8 mm (2.0 in) |
| 1983 | 94.8 mm (3.7 in) |
| 1984 | 54.1 mm (2.1 in) |
| 1985 | 65.1 mm (2.6 in) |
| 1986 | 114.3 mm (4.5 in) |
| 1987 | 42.5 mm (1.7 in) |
| 1988 | 71.2 mm (2.8 in) |
| 1989 | 61.5 mm (2.4 in) |
| 1990 | 56.4 mm (2.2 in) |
| 1991 | 128.5 mm (5.1 in) |
| 1992 | 111.2 mm (4.4 in) |
| 1993 | 117.7 mm (4.6 in) |
| 1994 | 36.6 mm (1.4 in) |
| 1995 | 105.5 mm (4.2 in) |
| 1996 | 69.1 mm (2.7 in) |
| 1997 | 60.4 mm (2.4 in) |
| 1998 | 61.9 mm (2.4 in) |
| 1999 | 40.2 mm (1.6 in) |
| 2000 | 148.2 mm (5.8 in) |
| 2001 | 65.3 mm (2.6 in) |
| 2002 | 129.2 mm (5.1 in) |
| 2003 | 70.6 mm (2.8 in) |
| 2004 | 68.3 mm (2.7 in) |
| 2005 | 56.7 mm (2.2 in) |
| 2006 | 65.0 mm (2.6 in) |
| 2007 | 89.7 mm (3.5 in) |
| 2008 | 135.2 mm (5.3 in) |
| 2009 | 79.6 mm (3.1 in) |
| 2010 | 81.5 mm (3.2 in) |
| 2011 | 39.8 mm (1.6 in) |
| 2012 | 140.2 mm (5.5 in) |
| 2013 | 104.5 mm (4.1 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1978 | 44 days |
| 1979 | 110 days |
| 1980 | 49 days |
| 1981 | 31 days |
| 1982 | 59 days |
| 1983 | 73 days |
| 1984 | 90 days |
| 1985 | 83 days |
| 1986 | 86 days |
| 1987 | 57 days |
| 1988 | 96 days |
| 1989 | 92 days |
| 1990 | 65 days |
| 1991 | 158 days |
| 1992 | 66 days |
| 1993 | 102 days |
| 1994 | 126 days |
| 1995 | 116 days |
| 1996 | 176 days |
| 1997 | 72 days |
| 1998 | 50 days |
| 1999 | 156 days |
| 2000 | 140 days |
| 2001 | 57 days |
| 2002 | 58 days |
| 2003 | 108 days |
| 2004 | 65 days |
| 2005 | 70 days |
| 2006 | 120 days |
| 2007 | 93 days |
| 2008 | 98 days |
| 2009 | 110 days |
| 2010 | 96 days |
| 2011 | 149 days |
| 2012 | 123 days |
| 2013 | 124 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.
Frost Dates and Growing Season
23 years with a frostAcross 23 years with a frost, the median last spring frost at Cosio falls on 12 February and the median first autumn frost on 30 November, which leaves a median of 288 days between them.
| Measure | Median, all years | Earliest period | Recent period (1979 to 2011) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 12 February | n/a | 12 February | n/a | n/a |
| First autumn frost | 30 November | n/a | 30 November | n/a | n/a |
| Growing days | 288 days | n/a | 288 days | n/a | n/a |
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
32 years, 1979 to 2012A day with at least 40.2 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 75.8 mm (3.0 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 40.2 mm (1.6 in) | |
| 5 years | 52.5 mm (2.1 in) | |
| 10 years | 59.4 mm (2.3 in) | |
| 25 years | 66.8 mm (2.6 in) | |
| 50 years | 71.6 mm (2.8 in) | Longer than the 32 years of record |
| 100 years | 75.8 mm (3.0 in) | Longer than the 32 years of record |
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 32 years of values from 1979 to 2012.
A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.
The largest wettest-day totals in the fit: 74.9 mm (2.9 in) in 2002; 64.8 mm (2.6 in) in 2000; 63.0 mm (2.5 in) in 2012.
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).