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Hornos Weather Records (MXN00026043)

Record envelope, standing records and threshold days for Hornos (MXN00026043), Mexico, with 52 years of record.

Key Facts for Hornos

  • Hornos (MXN00026043) is a weather station in Mexico at 27.70 latitude and -109.90 longitude, 54 m (177 ft) above sea level.
  • The station reports from 1960 to 2011, 52 years of record.
  • 1,464 records set at Hornos still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Hornos tied a daily record low maximum temperature of 30.0 C (86.0 F) on 24 July 2011.

About the Station

  • Location: Mexico, 27.70 latitude, -109.90 longitude.
  • Elevation: 54 m (177 ft).
  • Period of record: 1960 to 2011, 52 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Hornos, with 2026 drawn through them The band shows the record high and record low for each calendar day at Hornos. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Hornos. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Hornos, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan37.8 C (100.0 F)-5.0 C (23.0 F)n/an/a
Feb38.9 C (102.0 F)-1.1 C (30.0 F)n/an/a
Mar40.6 C (105.1 F)0.0 C (32.0 F)n/an/a
Apr42.8 C (109.0 F)1.7 C (35.1 F)n/an/a
May45.0 C (113.0 F)5.6 C (42.1 F)n/an/a
Jun48.3 C (118.9 F)8.9 C (48.0 F)n/an/a
Jul46.7 C (116.1 F)14.4 C (57.9 F)n/an/a
Aug45.0 C (113.0 F)17.8 C (64.0 F)n/an/a
Sep45.0 C (113.0 F)16.1 C (61.0 F)n/an/a
Oct45.0 C (113.0 F)5.6 C (42.1 F)n/an/a
Nov38.9 C (102.0 F)0.6 C (33.1 F)n/an/a
Dec36.7 C (98.1 F)-1.1 C (30.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Hornos by the year they were set 1,464 records at Hornos still stand. 1962 holds the most, with 80. 0204060801960: 521961: 621962: 801963: 421964: 411965: 381966: 221967: 471968: 261969: 311970: 481971: 541972: 251973: 361974: 271975: 291976: 161977: 441978: 391979: 401980: 281981: 291982: 261983: 261984: 251985: 261986: 291989: 41990: 131991: 121992: 231993: 171994: 191995: 121996: 141997: 181998: 211999: 132000: 322001: 192002: 132003: 292004: 382005: 392006: 312007: 322008: 312009: 202010: 202011: 61960196519701975198019851992199720022007
1,464 records at Hornos still stand. 1962 holds the most, with 80.
Standing records at Hornos by the year they were set
Year setStanding records
196052
196162
196280
196342
196441
196538
196622
196747
196826
196931
197048
197154
197225
197336
197427
197529
197616
197744
197839
197940
198028
198129
198226
198326
198425
198526
198629
19894
199013
199112
199223
199317
199419
199512
199614
199718
199821
199913
200032
200119
200213
200329
200438
200539
200631
200732
200831
200920
201020
20116

Wettest Day of Each Month

Oct: 239.8 mm (9.4 in)
Record daily precipitation for each month at Hornos The wettest day on record for each calendar month at Hornos. The most was 239.8 mm (9.4 in) on 20 October 1978. 0100200300 Jan: 103.9 mm (4.1 in), 27 January 1968 Jan Feb: 49.8 mm (2.0 in), 11 February 2005 Feb Mar: 38.4 mm (1.5 in), 27 March 1992 Mar Apr: 14.0 mm (0.6 in), 22 April 1981 Apr May: 4.3 mm (0.17 in), 12 May 1993 May Jun: 59.9 mm (2.4 in), 28 June 2009 Jun Jul: 108.7 mm (4.3 in), 25 July 1968 Jul Aug: 119.9 mm (4.7 in), 29 August 1977 Aug Sep: 119.4 mm (4.7 in), 30 September 2001 Sep Oct: 239.8 mm (9.4 in), 20 October 1978 Oct Nov: 47.0 mm (1.9 in), 4 November 1993 Nov Dec: 51.3 mm (2.0 in), 27 December 1972 Dec
The wettest day on record for each calendar month at Hornos. The most was 239.8 mm (9.4 in) on 20 October 1978.
Record daily precipitation for each month at Hornos
MonthRecord daily precipitation (mm)Date
Jan103.9 mm (4.1 in)27 January 1968
Feb49.8 mm (2.0 in)11 February 2005
Mar38.4 mm (1.5 in)27 March 1992
Apr14.0 mm (0.6 in)22 April 1981
May4.3 mm (0.17 in)12 May 1993
Jun59.9 mm (2.4 in)28 June 2009
Jul108.7 mm (4.3 in)25 July 1968
Aug119.9 mm (4.7 in)29 August 1977
Sep119.4 mm (4.7 in)30 September 2001
Oct239.8 mm (9.4 in)20 October 1978
Nov47.0 mm (1.9 in)4 November 1993
Dec51.3 mm (2.0 in)27 December 1972

Period of Record Coverage

1960 to 2011
Days with data per year at Hornos 50 years of record at Hornos, 1960 to 2011. 7 years have data for under 90 percent of days and are left out of rankings: 1960, 1973, 1986, 1989, 1990, 1991, 2011. 1960: 306 of 366 days1961: 364 of 365 days1962: 363 of 365 days1963: 365 of 365 days1964: 365 of 366 days1965: 365 of 365 days1966: 364 of 365 days1967: 363 of 365 days1968: 364 of 366 days1969: 365 of 365 days1970: 364 of 365 days1971: 365 of 365 days1972: 366 of 366 days1973: 323 of 365 days1974: 362 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 365 of 365 days1978: 365 of 365 days1979: 365 of 365 days1980: 365 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 365 of 365 days1984: 366 of 366 days1985: 365 of 365 days1986: 273 of 365 days1989: 91 of 365 days1990: 273 of 365 days1991: 150 of 365 days1992: 366 of 366 days1993: 362 of 365 days1994: 365 of 365 days1995: 365 of 365 days1996: 366 of 366 days1997: 365 of 365 days1998: 365 of 365 days1999: 334 of 365 days2000: 366 of 366 days2001: 356 of 365 days2002: 361 of 365 days2003: 365 of 365 days2004: 363 of 366 days2005: 365 of 365 days2006: 363 of 365 days2007: 364 of 365 days2008: 366 of 366 days2009: 363 of 365 days2010: 364 of 365 days2011: 209 of 365 days196019701980199020002010
50 years of record at Hornos, 1960 to 2011. 7 years have data for under 90 percent of days and are left out of rankings: 1960, 1973, 1986, 1989, 1990, 1991, 2011.
Days with data per year at Hornos
YearDays with dataShare of yearComplete
196030684%No
1961364100%Yes
196236399%Yes
1963365100%Yes
1964365100%Yes
1965365100%Yes
1966364100%Yes
196736399%Yes
196836499%Yes
1969365100%Yes
1970364100%Yes
1971365100%Yes
1972366100%Yes
197332388%No
197436299%Yes
1975365100%Yes
1976366100%Yes
1977365100%Yes
1978365100%Yes
1979365100%Yes
1980365100%Yes
1981365100%Yes
1982365100%Yes
1983365100%Yes
1984366100%Yes
1985365100%Yes
198627375%No
19899125%No
199027375%No
199115041%No
1992366100%Yes
199336299%Yes
1994365100%Yes
1995365100%Yes
1996366100%Yes
1997365100%Yes
1998365100%Yes
199933492%Yes
2000366100%Yes
200135698%Yes
200236199%Yes
2003365100%Yes
200436399%Yes
2005365100%Yes
200636399%Yes
2007364100%Yes
2008366100%Yes
200936399%Yes
2010364100%Yes
201120957%No

Latest Records

20
Latest records at Hornos
DateStationRecordValueBeat old record byOld record stoodSignificance
24 July 2011Hornos, MXdaily low max (Tie)30.0 C (86.0 F)tie40 years4 of 100 (Routine)
22 July 2011Hornos, MXdaily low min20.6 C (69.1 F)1.1 C (2.0 F)45 years24 of 100 (Routine)
21 July 2011Hornos, MXdaily low min20.0 C (68.0 F)1.7 C (3.1 F)50 years30 of 100 (Routine)
21 July 2011Hornos, MXdaily rain48.3 mm (1.9 in)14.3 mm (0.6 in)14 years19 of 100 (Routine)
6 July 2011Hornos, MXdaily low min (Tie)20.6 C (69.1 F)tie0 years1 of 100 (Routine)
4 July 2011Hornos, MXdaily rain25.9 mm (1.0 in)12.4 mm (0.5 in)20 years19 of 100 (Routine)
9 May 2011Hornos, MXdaily high min (Tie)17.8 C (64.0 F)tie44 years4 of 100 (Routine)
7 May 2011Hornos, MXdaily high max (Tie)40.6 C (105.1 F)tie44 years4 of 100 (Routine)
5 May 2011Hornos, MXdaily high max (Tie)40.6 C (105.1 F)tie48 years4 of 100 (Routine)
15 February 2011Hornos, MXdaily high max (Tie)32.8 C (91.0 F)tie13 years2 of 100 (Routine)
12 February 2011Hornos, MXdaily low min (Tie)2.8 C (37.0 F)tie45 years4 of 100 (Routine)
11 February 2011Hornos, MXdaily low min (Tie)3.9 C (39.0 F)tie44 years4 of 100 (Routine)
6 February 2011Hornos, MXdaily low min0.6 C (33.1 F)0.5 C (0.9 F)47 years20 of 100 (Routine)
5 February 2011Hornos, MXdaily low min0.0 C (32.0 F)2.2 C (4.0 F)40 years24 of 100 (Routine)
4 February 2011Hornos, MXdaily low min (Tie)0.0 C (32.0 F)tie47 years4 of 100 (Routine)
3 February 2011Hornos, MXmonthly low max10.6 C (51.1 F)4.4 C (7.9 F)44 years39 of 100 (Notable)
3 February 2011Hornos, MXmonthly low min (Tie)-1.1 C (30.0 F)tie46 years7 of 100 (Routine)
31 January 2011Hornos, MXdaily low min (Tie)3.9 C (39.0 F)tie36 years4 of 100 (Routine)
21 December 2010Hornos, MXdaily high max32.8 C (91.0 F)1.1 C (2.0 F)7 years9 of 100 (Routine)
19 December 2010Hornos, MXdaily high max (Tie)33.9 C (93.0 F)tie49 years4 of 100 (Routine)

Climate Trend

42 complete years, 1961 to 2010
Annual mean temperature at Hornos as warming stripes, 1961 to 2010 One stripe for each of 42 complete years at Hornos, 1961 to 2010. Blue stripes are years cooler than the station's own mean of 23.9 C (75.0 F); red stripes are warmer. The coolest year was 1971, at 22.5 C (72.6 F), and the warmest was 2003, at 25.2 C (77.4 F). The strongest colour marks a difference of 1.4 C (2.5 F). 1961: 23.7 C, -0.2 C from the station mean1962: 24.7 C, +0.8 C from the station mean1963: 24.6 C, +0.7 C from the station mean1964: 23.3 C, -0.6 C from the station mean1965: 23.7 C, -0.1 C from the station mean1966: 24.2 C, +0.3 C from the station mean1967: 23.9 C, 0.0 C from the station mean1968: 23.4 C, -0.5 C from the station mean1969: 23.6 C, -0.2 C from the station mean1970: 23.3 C, -0.5 C from the station mean1971: 22.5 C, -1.3 C from the station mean1972: 23.6 C, -0.3 C from the station mean1974: 23.4 C, -0.5 C from the station mean1975: 22.9 C, -1.0 C from the station mean1976: 23.6 C, -0.3 C from the station mean1977: 24.2 C, +0.3 C from the station mean1978: 23.9 C, 0.0 C from the station mean1979: 22.9 C, -0.9 C from the station mean1980: 23.7 C, -0.2 C from the station mean1981: 24.2 C, +0.3 C from the station mean1982: 23.7 C, -0.2 C from the station mean1983: 23.9 C, 0.0 C from the station mean1984: 23.7 C, -0.2 C from the station mean1985: 23.8 C, -0.1 C from the station mean1992: 23.8 C, -0.1 C from the station mean1993: 24.0 C, +0.1 C from the station mean1994: 24.1 C, +0.2 C from the station mean1995: 24.3 C, +0.4 C from the station mean1996: 24.4 C, +0.5 C from the station mean1997: 24.2 C, +0.3 C from the station mean1998: 23.9 C, 0.0 C from the station mean2000: 24.3 C, +0.4 C from the station mean2001: 24.0 C, +0.1 C from the station mean2002: 24.5 C, +0.6 C from the station mean2003: 25.2 C, +1.3 C from the station mean2004: 24.1 C, +0.2 C from the station mean2005: 25.1 C, +1.2 C from the station mean2006: 24.8 C, +1.0 C from the station mean2007: 24.0 C, +0.2 C from the station mean2008: 23.1 C, -0.8 C from the station mean2009: 23.2 C, -0.6 C from the station mean2010: 23.6 C, -0.3 C from the station mean19611965197019751980198519901995200020052010
One stripe for each of 42 complete years at Hornos, 1961 to 2010. Blue stripes are years cooler than the station's own mean of 23.9 C (75.0 F); red stripes are warmer. The coolest year was 1971, at 22.5 C (72.6 F), and the warmest was 2003, at 25.2 C (77.4 F). The strongest colour marks a difference of 1.4 C (2.5 F).
Annual mean temperature at Hornos as warming stripes, 1961 to 2010
YearAnnual mean temperatureDifference from the station mean
196123.7 C-0.21 C
196224.7 C+0.82 C
196324.6 C+0.67 C
196423.3 C-0.60 C
196523.7 C-0.15 C
196624.2 C+0.30 C
196723.9 C+0.01 C
196823.4 C-0.47 C
196923.6 C-0.24 C
197023.3 C-0.55 C
197122.5 C-1.34 C
197223.6 C-0.26 C
197423.4 C-0.51 C
197522.9 C-1.03 C
197623.6 C-0.27 C
197724.2 C+0.29 C
197823.9 C+0.03 C
197922.9 C-0.94 C
198023.7 C-0.16 C
198124.2 C+0.32 C
198223.7 C-0.20 C
198323.9 C-0.01 C
198423.7 C-0.18 C
198523.8 C-0.09 C
199223.8 C-0.10 C
199324.0 C+0.13 C
199424.1 C+0.18 C
199524.3 C+0.41 C
199624.4 C+0.50 C
199724.2 C+0.29 C
199823.9 C+0.03 C
200024.3 C+0.43 C
200124.0 C+0.11 C
200224.5 C+0.60 C
200325.2 C+1.33 C
200424.1 C+0.24 C
200525.1 C+1.19 C
200624.8 C+0.96 C
200724.0 C+0.16 C
200823.1 C-0.81 C
200923.2 C-0.64 C
201023.6 C-0.32 C

The annual mean temperature here has risen by 0.11 C (0.00 to 0.22) per decade over 1961 to 2010. In Fahrenheit: 0.20 F (0.01 to 0.40) per decade. The slope is a straight line fitted to 42 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Hornos
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.11 C (0.00 to 0.22) per decade0.20 F (0.01 to 0.40) per decade1961 to 201042Rise
Mean daily maximum0.17 C (-0.02 to 0.36) per decade0.30 F (-0.05 to 0.64) per decade1961 to 201042Not clearly different from zero
Mean daily minimum0.1 C (-0.1 to 0.2) per decade0.1 F (-0.2 to 0.4) per decade1961 to 201042Not 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

1960 to 2011
Yearly extremes at Hornos: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)48.3 C (118.9 F)196443.9 C (111.0 F)50
Coldest night (TNn)-5.0 C (23.0 F)19711.7 C (35.1 F)50
Wettest day (Rx1day)239.8 mm (9.4 in)197864.2 mm (2.5 in)50
Wettest five days (Rx5day)243.1 mm (9.6 in)197887.5 mm (3.4 in)50
Longest dry spell (CDD)182 days2011108 days50

Hottest day (TXx)

Hottest day (TXx) at Hornos by year The hottest day of the year at Hornos, 1960 to 2011. The record is 48.3 C (118.9 F) in 1964, marked on the chart; the median year is 43.9 C (111.0 F). 404244464850196019701980199020002010Record: 48.3 C (118.9 F) in 1964
The hottest day of the year at Hornos, 1960 to 2011. The record is 48.3 C (118.9 F) in 1964, marked on the chart; the median year is 43.9 C (111.0 F).
Hottest day (TXx) at Hornos by year
YearHottest day (TXx)
196043.9 C (111.0 F)
196145.0 C (113.0 F)
196245.0 C (113.0 F)
196344.4 C (111.9 F)
196448.3 C (118.9 F)
196542.8 C (109.0 F)
196644.4 C (111.9 F)
196742.8 C (109.0 F)
196844.4 C (111.9 F)
196943.3 C (109.9 F)
197045.0 C (113.0 F)
197141.7 C (107.1 F)
197242.2 C (108.0 F)
197341.7 C (107.1 F)
197441.1 C (106.0 F)
197542.8 C (109.0 F)
197643.3 C (109.9 F)
197741.7 C (107.1 F)
197841.7 C (107.1 F)
197945.0 C (113.0 F)
198044.4 C (111.9 F)
198143.9 C (111.0 F)
198244.4 C (111.9 F)
198344.4 C (111.9 F)
198442.8 C (109.0 F)
198542.2 C (108.0 F)
198642.2 C (108.0 F)
198941.7 C (107.1 F)
199045.0 C (113.0 F)
199141.7 C (107.1 F)
199241.7 C (107.1 F)
199343.9 C (111.0 F)
199443.9 C (111.0 F)
199543.9 C (111.0 F)
199643.9 C (111.0 F)
199745.0 C (113.0 F)
199845.0 C (113.0 F)
199945.0 C (113.0 F)
200043.9 C (111.0 F)
200145.0 C (113.0 F)
200245.0 C (113.0 F)
200345.6 C (114.1 F)
200442.8 C (109.0 F)
200545.6 C (114.1 F)
200646.7 C (116.1 F)
200746.7 C (116.1 F)
200845.0 C (113.0 F)
200942.8 C (109.0 F)
201043.9 C (111.0 F)
201141.7 C (107.1 F)

Coldest night (TNn)

Coldest night (TNn) at Hornos by year The coldest night of the year at Hornos, 1960 to 2011. The record is -5.0 C (23.0 F) in 1971, marked on the chart; the median year is 1.7 C (35.1 F). -5051015196019701980199020002010Record: -5.0 C (23.0 F) in 1971
The coldest night of the year at Hornos, 1960 to 2011. The record is -5.0 C (23.0 F) in 1971, marked on the chart; the median year is 1.7 C (35.1 F).
Coldest night (TNn) at Hornos by year
YearColdest night (TNn)
19600.0 C (32.0 F)
19613.9 C (39.0 F)
19620.0 C (32.0 F)
19630.6 C (33.1 F)
1964-1.1 C (30.0 F)
19650.6 C (33.1 F)
1966-1.1 C (30.0 F)
19671.1 C (34.0 F)
19681.7 C (35.1 F)
19691.7 C (35.1 F)
19701.7 C (35.1 F)
1971-5.0 C (23.0 F)
19721.1 C (34.0 F)
19730.6 C (33.1 F)
19742.8 C (37.0 F)
19751.1 C (34.0 F)
19761.7 C (35.1 F)
19773.9 C (39.0 F)
19780.0 C (32.0 F)
19792.8 C (37.0 F)
19804.4 C (39.9 F)
19812.2 C (36.0 F)
19821.7 C (35.1 F)
19834.4 C (39.9 F)
19840.0 C (32.0 F)
19854.4 C (39.9 F)
19865.6 C (42.1 F)
198910.6 C (51.1 F)
19905.0 C (41.0 F)
19913.9 C (39.0 F)
19923.9 C (39.0 F)
19936.1 C (43.0 F)
19945.6 C (42.1 F)
19955.0 C (41.0 F)
19964.4 C (39.9 F)
19972.8 C (37.0 F)
19981.7 C (35.1 F)
19993.9 C (39.0 F)
20002.2 C (36.0 F)
2001-1.1 C (30.0 F)
20021.7 C (35.1 F)
20030.6 C (33.1 F)
20040.6 C (33.1 F)
20053.9 C (39.0 F)
20061.7 C (35.1 F)
20070.0 C (32.0 F)
20081.7 C (35.1 F)
20092.8 C (37.0 F)
20103.9 C (39.0 F)
2011-1.1 C (30.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Hornos by year The wettest day of the year at Hornos, 1960 to 2011. The record is 239.8 mm (9.4 in) in 1978, marked on the chart; the median year is 64.2 mm (2.5 in). 0100200300196019701980199020002010Record: 239.8 mm (9.4 in) in 1978
The wettest day of the year at Hornos, 1960 to 2011. The record is 239.8 mm (9.4 in) in 1978, marked on the chart; the median year is 64.2 mm (2.5 in).
Wettest day (Rx1day) at Hornos by year
YearWettest day (Rx1day)
196037.8 mm (1.5 in)
196163.0 mm (2.5 in)
196249.8 mm (2.0 in)
196352.8 mm (2.1 in)
196443.9 mm (1.7 in)
196533.8 mm (1.3 in)
196665.3 mm (2.6 in)
196751.6 mm (2.0 in)
1968108.7 mm (4.3 in)
196981.5 mm (3.2 in)
197039.9 mm (1.6 in)
197137.8 mm (1.5 in)
197251.3 mm (2.0 in)
197329.2 mm (1.1 in)
197443.7 mm (1.7 in)
197584.1 mm (3.3 in)
197669.3 mm (2.7 in)
1977119.9 mm (4.7 in)
1978239.8 mm (9.4 in)
197953.1 mm (2.1 in)
1980103.9 mm (4.1 in)
198171.9 mm (2.8 in)
198248.8 mm (1.9 in)
198383.8 mm (3.3 in)
198455.6 mm (2.2 in)
198557.9 mm (2.3 in)
198691.9 mm (3.6 in)
198946.0 mm (1.8 in)
199058.4 mm (2.3 in)
199139.9 mm (1.6 in)
199255.4 mm (2.2 in)
199365.3 mm (2.6 in)
199448.0 mm (1.9 in)
199565.3 mm (2.6 in)
199654.9 mm (2.2 in)
199737.3 mm (1.5 in)
1998101.9 mm (4.0 in)
199971.9 mm (2.8 in)
200041.4 mm (1.6 in)
2001119.4 mm (4.7 in)
200266.3 mm (2.6 in)
200371.4 mm (2.8 in)
2004105.9 mm (4.2 in)
200589.4 mm (3.5 in)
200671.9 mm (2.8 in)
200797.8 mm (3.9 in)
200870.9 mm (2.8 in)
2009105.9 mm (4.2 in)
201083.8 mm (3.3 in)
201148.3 mm (1.9 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Hornos by year The wettest five days of the year at Hornos, 1960 to 2011. The record is 243.1 mm (9.6 in) in 1978, marked on the chart; the median year is 87.5 mm (3.4 in). 0100200300196019701980199020002010Record: 243.1 mm (9.6 in) in 1978
The wettest five days of the year at Hornos, 1960 to 2011. The record is 243.1 mm (9.6 in) in 1978, marked on the chart; the median year is 87.5 mm (3.4 in).
Wettest five days (Rx5day) at Hornos by year
YearWettest five days (Rx5day)
196058.6 mm (2.3 in)
196168.6 mm (2.7 in)
196279.8 mm (3.1 in)
196397.4 mm (3.8 in)
196475.2 mm (3.0 in)
196563.8 mm (2.5 in)
196685.4 mm (3.4 in)
1967133.5 mm (5.3 in)
1968109.5 mm (4.3 in)
196984.3 mm (3.3 in)
197065.1 mm (2.6 in)
197159.6 mm (2.3 in)
197294.2 mm (3.7 in)
197332.9 mm (1.3 in)
197465.5 mm (2.6 in)
197584.1 mm (3.3 in)
197672.1 mm (2.8 in)
1977130.9 mm (5.2 in)
1978243.1 mm (9.6 in)
197961.0 mm (2.4 in)
1980181.4 mm (7.1 in)
1981132.2 mm (5.2 in)
198265.1 mm (2.6 in)
1983135.7 mm (5.3 in)
198498.0 mm (3.9 in)
198568.8 mm (2.7 in)
198692.7 mm (3.6 in)
198971.1 mm (2.8 in)
1990159.6 mm (6.3 in)
199190.2 mm (3.6 in)
199268.1 mm (2.7 in)
199366.6 mm (2.6 in)
199467.0 mm (2.6 in)
199599.4 mm (3.9 in)
199687.4 mm (3.4 in)
199761.0 mm (2.4 in)
1998117.9 mm (4.6 in)
199992.8 mm (3.7 in)
200047.1 mm (1.9 in)
2001164.6 mm (6.5 in)
200266.3 mm (2.6 in)
200397.9 mm (3.9 in)
2004139.2 mm (5.5 in)
2005108.0 mm (4.3 in)
2006121.2 mm (4.8 in)
2007102.1 mm (4.0 in)
2008125.0 mm (4.9 in)
2009145.8 mm (5.7 in)
201087.6 mm (3.4 in)
201166.4 mm (2.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Hornos by year The longest dry spell of the year at Hornos, 1960 to 2011. The record is 182 days in 2011, marked on the chart; the median year is 108 days. 050100150200196019701980199020002010Record: 182 days in 2011
The longest dry spell of the year at Hornos, 1960 to 2011. The record is 182 days in 2011, marked on the chart; the median year is 108 days.
Longest dry spell (CDD) at Hornos by year
YearLongest dry spell (CDD)
1960113 days
1961143 days
1962113 days
1963137 days
196498 days
1965110 days
196694 days
1967176 days
196888 days
1969136 days
197099 days
1971173 days
1972144 days
197396 days
197492 days
1975111 days
1976124 days
197795 days
1978106 days
1979171 days
1980140 days
198179 days
1982163 days
198394 days
198469 days
198564 days
1986141 days
198930 days
199088 days
199131 days
1992101 days
199347 days
1994168 days
1995141 days
199696 days
199770 days
199895 days
1999172 days
2000103 days
2001133 days
2002153 days
200386 days
200479 days
2005103 days
2006128 days
2007137 days
2008156 days
2009100 days
2010165 days
2011182 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.

Rainfall Return Levels

44 years, 1961 to 2010

A day with at least 63.8 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 198.3 mm (7.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Hornos: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years63.8 mm (2.5 in)
5 years91.1 mm (3.6 in)
10 years112.2 mm (4.4 in)
25 years142.9 mm (5.6 in)
50 years169.1 mm (6.7 in)Longer than the 44 years of record
100 years198.3 mm (7.8 in)Longer than the 44 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, 44 years of values from 1961 to 2010.

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: 239.8 mm (9.4 in) in 1978; 119.9 mm (4.7 in) in 1977; 119.4 mm (4.7 in) in 2001.

Station Changes

1 suspected

One change was suspected in the annual mean temperature of Hornos, at 1992. Each is measured against neighbouring stations.

  • Relative to 5 neighbouring stations, the station's annual mean temperature from 1992 ran 0.4 C (0.7 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Hornos, against neighbouring stations
YearShift (C)Shift (F)StrengthNeighbours
1992-0.4-0.7likely5

Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.

Download the Data

  • Data for Hornos standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Hornos 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). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).