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Built 2026-10-18 (18 October 2026)

Aculco (Smn) Weather Records (MXN00015002)

Record envelope, standing records and threshold days for Aculco (Smn) (MXN00015002), Mexico, with 52 years of record.

Key Facts for Aculco (Smn)

  • Aculco (Smn) (MXN00015002) is a weather station in Mexico at 20.10 latitude and -99.82 longitude, 2,490 m (8,169 ft) above sea level.
  • The station reports from 1961 to 2012, 52 years of record.
  • 1,464 records set at Aculco (Smn) still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Aculco (Smn) set a daily record low minimum temperature of 3.9 C (39.0 F) on 30 May 2012.

About the Station

  • Location: Mexico, 20.10 latitude, -99.82 longitude.
  • Elevation: 2,490 m (8,169 ft).
  • Period of record: 1961 to 2012, 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 Aculco (Smn), with 2026 drawn through them The band shows the record high and record low for each calendar day at Aculco (Smn). The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -10010203040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Aculco (Smn). 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 Aculco (Smn), with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan27.8 C (82.0 F)-5.6 C (21.9 F)n/an/a
Feb26.1 C (79.0 F)-7.2 C (19.0 F)n/an/a
Mar30.0 C (86.0 F)-4.4 C (24.1 F)n/an/a
Apr30.6 C (87.1 F)0.6 C (33.1 F)n/an/a
May31.7 C (89.1 F)2.8 C (37.0 F)n/an/a
Jun30.6 C (87.1 F)1.7 C (35.1 F)n/an/a
Jul28.9 C (84.0 F)0.6 C (33.1 F)n/an/a
Aug27.8 C (82.0 F)2.8 C (37.0 F)n/an/a
Sep27.8 C (82.0 F)0.0 C (32.0 F)n/an/a
Oct27.2 C (81.0 F)-3.3 C (26.1 F)n/an/a
Nov25.0 C (77.0 F)-5.0 C (23.0 F)n/an/a
Dec30.0 C (86.0 F)-7.2 C (19.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Aculco (Smn) by the year they were set 1,464 records at Aculco (Smn) still stand. 1961 holds the most, with 226. 01002003001961: 2261962: 1541963: 501964: 701965: 621966: 161968: 71969: 51970: 101971: 121972: 111973: 81974: 131975: 851976: 521977: 631978: 241979: 481980: 81981: 61982: 51983: 471984: 81985: 31986: 141987: 101988: 131989: 191990: 141991: 171992: 81993: 61994: 91995: 231996: 181997: 321998: 381999: 332000: 132001: 182002: 132003: 292004: 182005: 132006: 182007: 132008: 62009: 182010: 442011: 52012: 9196119681974198019861992199820042010
1,464 records at Aculco (Smn) still stand. 1961 holds the most, with 226.
Standing records at Aculco (Smn) by the year they were set
Year setStanding records
1961226
1962154
196350
196470
196562
196616
19687
19695
197010
197112
197211
19738
197413
197585
197652
197763
197824
197948
19808
19816
19825
198347
19848
19853
198614
198710
198813
198919
199014
199117
19928
19936
19949
199523
199618
199732
199838
199933
200013
200118
200213
200329
200418
200513
200618
200713
20086
200918
201044
20115
20129

Wettest Day of Each Month

Jul: 84.8 mm (3.3 in)
Record daily precipitation for each month at Aculco (Smn) The wettest day on record for each calendar month at Aculco (Smn). The most was 84.8 mm (3.3 in) on 22 July 1973. 0255075100 Jan: 23.9 mm (0.9 in), 14 January 2002 Jan Feb: 35.3 mm (1.4 in), 4 February 2010 Feb Mar: 24.4 mm (1.0 in), 11 March 2012 Mar Apr: 27.7 mm (1.1 in), 16 April 1997 Apr May: 43.7 mm (1.7 in), 17 May 2012 May Jun: 81.3 mm (3.2 in), 17 June 1991 Jun Jul: 84.8 mm (3.3 in), 22 July 1973 Jul Aug: 69.3 mm (2.7 in), 27 August 1976 Aug Sep: 74.9 mm (2.9 in), 15 September 1964 Sep Oct: 45.7 mm (1.8 in), 17 October 1992 Oct Nov: 46.0 mm (1.8 in), 11 November 2006 Nov Dec: 30.0 mm (1.2 in), 7 December 1979 Dec
The wettest day on record for each calendar month at Aculco (Smn). The most was 84.8 mm (3.3 in) on 22 July 1973.
Record daily precipitation for each month at Aculco (Smn)
MonthRecord daily precipitation (mm)Date
Jan23.9 mm (0.9 in)14 January 2002
Feb35.3 mm (1.4 in)4 February 2010
Mar24.4 mm (1.0 in)11 March 2012
Apr27.7 mm (1.1 in)16 April 1997
May43.7 mm (1.7 in)17 May 2012
Jun81.3 mm (3.2 in)17 June 1991
Jul84.8 mm (3.3 in)22 July 1973
Aug69.3 mm (2.7 in)27 August 1976
Sep74.9 mm (2.9 in)15 September 1964
Oct45.7 mm (1.8 in)17 October 1992
Nov46.0 mm (1.8 in)11 November 2006
Dec30.0 mm (1.2 in)7 December 1979

Period of Record Coverage

1961 to 2012
Days with data per year at Aculco (Smn) 51 years of record at Aculco (Smn), 1961 to 2012. 21 years have data for under 90 percent of days and are left out of rankings: 1962, 1963, 1965, 1966, 1968, 1969, 1970, 1971 and others. 1961: 360 of 365 days1962: 328 of 365 days1963: 149 of 365 days1964: 366 of 366 days1965: 324 of 365 days1966: 180 of 365 days1968: 150 of 366 days1969: 194 of 365 days1970: 181 of 365 days1971: 181 of 365 days1972: 365 of 366 days1973: 327 of 365 days1974: 355 of 365 days1975: 319 of 365 days1976: 318 of 366 days1977: 354 of 365 days1978: 357 of 365 days1979: 362 of 365 days1980: 362 of 366 days1981: 365 of 365 days1982: 364 of 365 days1983: 364 of 365 days1984: 366 of 366 days1985: 153 of 365 days1986: 176 of 365 days1987: 210 of 365 days1988: 303 of 366 days1989: 334 of 365 days1990: 331 of 365 days1991: 365 of 365 days1992: 365 of 366 days1993: 363 of 365 days1994: 302 of 365 days1995: 364 of 365 days1996: 365 of 366 days1997: 365 of 365 days1998: 361 of 365 days1999: 363 of 365 days2000: 347 of 366 days2001: 341 of 365 days2002: 354 of 365 days2003: 205 of 365 days2004: 353 of 366 days2005: 335 of 365 days2006: 344 of 365 days2007: 239 of 365 days2008: 60 of 366 days2009: 363 of 365 days2010: 365 of 365 days2011: 123 of 365 days2012: 152 of 366 days19701980199020002010
51 years of record at Aculco (Smn), 1961 to 2012. 21 years have data for under 90 percent of days and are left out of rankings: 1962, 1963, 1965, 1966, 1968, 1969, 1970, 1971 and others.
Days with data per year at Aculco (Smn)
YearDays with dataShare of yearComplete
196136099%Yes
196232890%No
196314941%No
1964366100%Yes
196532489%No
196618049%No
196815041%No
196919453%No
197018150%No
197118150%No
1972365100%Yes
197332790%No
197435597%Yes
197531987%No
197631887%No
197735497%Yes
197835798%Yes
197936299%Yes
198036299%Yes
1981365100%Yes
1982364100%Yes
1983364100%Yes
1984366100%Yes
198515342%No
198617648%No
198721058%No
198830383%No
198933492%Yes
199033191%Yes
1991365100%Yes
1992365100%Yes
199336399%Yes
199430283%No
1995364100%Yes
1996365100%Yes
1997365100%Yes
199836199%Yes
199936399%Yes
200034795%Yes
200134193%Yes
200235497%Yes
200320556%No
200435396%Yes
200533592%Yes
200634494%Yes
200723965%No
20086016%No
200936399%Yes
2010365100%Yes
201112334%No
201215242%No

Latest Records

20
Latest records at Aculco (Smn)
DateStationRecordValueBeat old record byOld record stoodSignificance
30 May 2012Aculco (Smn), MXdaily low min3.9 C (39.0 F)1.1 C (2.0 F)28 years18 of 100 (Routine)
29 May 2012Aculco (Smn), MXdaily low min (Tie)3.9 C (39.0 F)tie28 years3 of 100 (Routine)
23 May 2012Aculco (Smn), MXdaily low min4.4 C (39.9 F)0.6 C (1.1 F)13 years10 of 100 (Routine)
17 May 2012Aculco (Smn), MXmonthly rain43.7 mm (1.7 in)6.1 mm (0.24 in)6 years24 of 100 (Routine)
13 May 2012Aculco (Smn), MXdaily rain20.1 mm (0.8 in)12.5 mm (0.5 in)6 years20 of 100 (Routine)
27 April 2012Aculco (Smn), MXdaily low min2.8 C (37.0 F)1.1 C (2.0 F)47 years23 of 100 (Routine)
26 April 2012Aculco (Smn), MXdaily low min2.2 C (36.0 F)2.8 C (5.0 F)47 years30 of 100 (Routine)
25 April 2012Aculco (Smn), MXdaily low min3.9 C (39.0 F)1.1 C (2.0 F)47 years23 of 100 (Routine)
24 April 2012Aculco (Smn), MXdaily low min1.7 C (35.1 F)3.3 C (5.9 F)47 years32 of 100 (Routine)
18 April 2012Aculco (Smn), MXdaily low min4.4 C (39.9 F)0.6 C (1.1 F)32 years16 of 100 (Routine)
11 April 2012Aculco (Smn), MXdaily rain26.9 mm (1.1 in)6.1 mm (0.24 in)44 years29 of 100 (Routine)
11 March 2012Aculco (Smn), MXmonthly rain24.4 mm (1.0 in)2.8 mm (0.11 in)14 years20 of 100 (Routine)
9 March 2012Aculco (Smn), MXdaily high max25.6 C (78.1 F)0.6 C (1.1 F)43 years18 of 100 (Routine)
12 February 2012Aculco (Smn), MXdaily rain (Tie)2.8 mm (0.11 in)tie9 years1 of 100 (Routine)
11 February 2012Aculco (Smn), MXdaily rain14.7 mm (0.6 in)4.8 mm (0.19 in)32 years20 of 100 (Routine)
11 February 2012Aculco (Smn), MXdaily low max7.8 C (46.0 F)1.1 C (2.0 F)33 years17 of 100 (Routine)
10 February 2012Aculco (Smn), MXdaily rain (Tie)3.8 mm (0.15 in)tie41 years4 of 100 (Routine)
6 February 2012Aculco (Smn), MXdaily rain3.3 mm (0.13 in)1.5 mm (0.06 in)20 years13 of 100 (Routine)
30 January 2012Aculco (Smn), MXdaily rain3.8 mm (0.15 in)1.8 mm (0.07 in)20 years14 of 100 (Routine)
1 January 2012Aculco (Smn), MXdaily rain10.2 mm (0.4 in)9.4 mm (0.37 in)21 years20 of 100 (Routine)

Climate Trend

26 complete years, 1961 to 2010
Annual mean temperature at Aculco (Smn) as warming stripes, 1961 to 2010 One stripe for each of 26 complete years at Aculco (Smn), 1961 to 2010. Blue stripes are years cooler than the station's own mean of 13.4 C (56.2 F); red stripes are warmer. The coolest year was 1964, at 11.0 C (51.7 F), and the warmest was 1961, at 16.5 C (61.7 F). The strongest colour marks a difference of 3.1 C (5.6 F). 1961: 16.5 C, +3.1 C from the station mean1964: 11.0 C, -2.5 C from the station mean1972: 12.8 C, -0.6 C from the station mean1974: 13.0 C, -0.4 C from the station mean1977: 13.1 C, -0.3 C from the station mean1978: 13.6 C, +0.1 C from the station mean1979: 12.7 C, -0.7 C from the station mean1980: 13.7 C, +0.2 C from the station mean1981: 13.3 C, -0.1 C from the station mean1982: 12.9 C, -0.6 C from the station mean1983: 12.8 C, -0.6 C from the station mean1984: 13.2 C, -0.2 C from the station mean1991: 13.8 C, +0.4 C from the station mean1992: 13.2 C, -0.3 C from the station mean1993: 13.6 C, +0.2 C from the station mean1995: 14.1 C, +0.6 C from the station mean1996: 13.6 C, +0.1 C from the station mean1997: 13.7 C, +0.3 C from the station mean1998: 14.5 C, +1.0 C from the station mean1999: 13.3 C, -0.2 C from the station mean2000: 13.5 C, +0.1 C from the station mean2001: 13.4 C, 0.0 C from the station mean2002: 13.7 C, +0.2 C from the station mean2004: 13.4 C, -0.1 C from the station mean2009: 14.0 C, +0.5 C from the station mean2010: 13.3 C, -0.2 C from the station mean19611965197019751980198519901995200020052010
One stripe for each of 26 complete years at Aculco (Smn), 1961 to 2010. Blue stripes are years cooler than the station's own mean of 13.4 C (56.2 F); red stripes are warmer. The coolest year was 1964, at 11.0 C (51.7 F), and the warmest was 1961, at 16.5 C (61.7 F). The strongest colour marks a difference of 3.1 C (5.6 F).
Annual mean temperature at Aculco (Smn) as warming stripes, 1961 to 2010
YearAnnual mean temperatureDifference from the station mean
196116.5 C+3.06 C
196411.0 C-2.48 C
197212.8 C-0.62 C
197413.0 C-0.44 C
197713.1 C-0.32 C
197813.6 C+0.15 C
197912.7 C-0.74 C
198013.7 C+0.24 C
198113.3 C-0.13 C
198212.9 C-0.55 C
198312.8 C-0.62 C
198413.2 C-0.22 C
199113.8 C+0.38 C
199213.2 C-0.29 C
199313.6 C+0.17 C
199514.1 C+0.62 C
199613.6 C+0.13 C
199713.7 C+0.26 C
199814.5 C+1.05 C
199913.3 C-0.15 C
200013.5 C+0.10 C
200113.4 C-0.03 C
200213.7 C+0.21 C
200413.4 C-0.06 C
200914.0 C+0.55 C
201013.3 C-0.17 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

1961 to 2012
Yearly extremes at Aculco (Smn): the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)31.7 C (89.1 F)199827.8 C (82.0 F)51
Coldest night (TNn)-7.2 C (19.0 F)1997-2.8 C (27.0 F)51
Wettest day (Rx1day)84.8 mm (3.3 in)197341.9 mm (1.6 in)51
Wettest five days (Rx5day)172.2 mm (6.8 in)200783.0 mm (3.3 in)51
Longest dry spell (CDD)153 days197260 days51

Hottest day (TXx)

Hottest day (TXx) at Aculco (Smn) by year The hottest day of the year at Aculco (Smn), 1961 to 2012. The record is 31.7 C (89.1 F) in 1998, marked on the chart; the median year is 27.8 C (82.0 F). 2025303519701980199020002010Record: 31.7 C (89.1 F) in 1998
The hottest day of the year at Aculco (Smn), 1961 to 2012. The record is 31.7 C (89.1 F) in 1998, marked on the chart; the median year is 27.8 C (82.0 F).
Hottest day (TXx) at Aculco (Smn) by year
YearHottest day (TXx)
196130.6 C (87.1 F)
196228.9 C (84.0 F)
196320.0 C (68.0 F)
196425.0 C (77.0 F)
196522.8 C (73.0 F)
196625.0 C (77.0 F)
196825.6 C (78.1 F)
196926.7 C (80.1 F)
197025.6 C (78.1 F)
197128.9 C (84.0 F)
197223.9 C (75.0 F)
197326.7 C (80.1 F)
197425.0 C (77.0 F)
197525.0 C (77.0 F)
197625.0 C (77.0 F)
197725.6 C (78.1 F)
197828.9 C (84.0 F)
197925.6 C (78.1 F)
198025.6 C (78.1 F)
198127.8 C (82.0 F)
198230.0 C (86.0 F)
198326.7 C (80.1 F)
198425.0 C (77.0 F)
198525.0 C (77.0 F)
198625.6 C (78.1 F)
198725.0 C (77.0 F)
198830.0 C (86.0 F)
198929.4 C (84.9 F)
199030.0 C (86.0 F)
199129.4 C (84.9 F)
199226.7 C (80.1 F)
199328.9 C (84.0 F)
199428.9 C (84.0 F)
199529.4 C (84.9 F)
199628.3 C (82.9 F)
199727.8 C (82.0 F)
199831.7 C (89.1 F)
199929.4 C (84.9 F)
200027.8 C (82.0 F)
200129.4 C (84.9 F)
200229.4 C (84.9 F)
200331.1 C (88.0 F)
200427.8 C (82.0 F)
200530.0 C (86.0 F)
200629.4 C (84.9 F)
200728.9 C (84.0 F)
200823.9 C (75.0 F)
200928.3 C (82.9 F)
201028.9 C (84.0 F)
201124.4 C (75.9 F)
201228.3 C (82.9 F)

Coldest night (TNn)

Coldest night (TNn) at Aculco (Smn) by year The coldest night of the year at Aculco (Smn), 1961 to 2012. The record is -7.2 C (19.0 F) in 1997, marked on the chart; the median year is -2.8 C (27.0 F). -7.5-5-2.502.5519701980199020002010Record: -7.2 C (19.0 F) in 1997
The coldest night of the year at Aculco (Smn), 1961 to 2012. The record is -7.2 C (19.0 F) in 1997, marked on the chart; the median year is -2.8 C (27.0 F).
Coldest night (TNn) at Aculco (Smn) by year
YearColdest night (TNn)
19612.8 C (37.0 F)
19620.6 C (33.1 F)
19630.0 C (32.0 F)
19640.0 C (32.0 F)
1965-3.3 C (26.1 F)
19660.0 C (32.0 F)
19680.0 C (32.0 F)
1969-2.2 C (28.0 F)
19700.0 C (32.0 F)
1971-0.6 C (30.9 F)
1972-5.0 C (23.0 F)
19730.0 C (32.0 F)
1974-4.4 C (24.1 F)
1975-4.4 C (24.1 F)
19760.0 C (32.0 F)
19770.6 C (33.1 F)
19780.0 C (32.0 F)
19790.0 C (32.0 F)
19800.0 C (32.0 F)
19810.0 C (32.0 F)
19820.0 C (32.0 F)
19830.6 C (33.1 F)
19840.6 C (33.1 F)
19850.0 C (32.0 F)
19860.0 C (32.0 F)
19870.0 C (32.0 F)
1988-2.2 C (28.0 F)
1989-4.4 C (24.1 F)
1990-3.3 C (26.1 F)
1991-3.3 C (26.1 F)
1992-2.8 C (27.0 F)
1993-2.8 C (27.0 F)
1994-1.7 C (28.9 F)
1995-3.3 C (26.1 F)
1996-4.4 C (24.1 F)
1997-7.2 C (19.0 F)
1998-7.2 C (19.0 F)
1999-5.6 C (21.9 F)
2000-3.3 C (26.1 F)
2001-4.4 C (24.1 F)
2002-5.0 C (23.0 F)
2003-5.0 C (23.0 F)
2004-3.3 C (26.1 F)
2005-3.3 C (26.1 F)
2006-6.1 C (21.0 F)
2007-2.8 C (27.0 F)
2008-5.0 C (23.0 F)
2009-5.0 C (23.0 F)
2010-5.0 C (23.0 F)
2011-5.0 C (23.0 F)
20120.0 C (32.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Aculco (Smn) by year The wettest day of the year at Aculco (Smn), 1961 to 2012. The record is 84.8 mm (3.3 in) in 1973, marked on the chart; the median year is 41.9 mm (1.6 in). 025507510019701980199020002010Record: 84.8 mm (3.3 in) in 1973
The wettest day of the year at Aculco (Smn), 1961 to 2012. The record is 84.8 mm (3.3 in) in 1973, marked on the chart; the median year is 41.9 mm (1.6 in).
Wettest day (Rx1day) at Aculco (Smn) by year
YearWettest day (Rx1day)
19615.8 mm (0.23 in)
196239.9 mm (1.6 in)
196335.3 mm (1.4 in)
196474.9 mm (2.9 in)
196539.9 mm (1.6 in)
196644.5 mm (1.8 in)
196820.8 mm (0.8 in)
196931.8 mm (1.3 in)
197059.9 mm (2.4 in)
197131.0 mm (1.2 in)
197241.9 mm (1.6 in)
197384.8 mm (3.3 in)
197464.8 mm (2.6 in)
197521.8 mm (0.9 in)
197669.3 mm (2.7 in)
197767.3 mm (2.6 in)
197835.8 mm (1.4 in)
197966.8 mm (2.6 in)
198036.8 mm (1.4 in)
198162.0 mm (2.4 in)
198230.5 mm (1.2 in)
198351.8 mm (2.0 in)
198441.9 mm (1.6 in)
198549.8 mm (2.0 in)
198619.8 mm (0.8 in)
198721.8 mm (0.9 in)
198844.2 mm (1.7 in)
198939.9 mm (1.6 in)
199037.6 mm (1.5 in)
199182.8 mm (3.3 in)
199253.3 mm (2.1 in)
199350.0 mm (2.0 in)
199439.4 mm (1.6 in)
199555.4 mm (2.2 in)
199631.8 mm (1.3 in)
199735.1 mm (1.4 in)
199849.0 mm (1.9 in)
199954.6 mm (2.1 in)
200041.7 mm (1.6 in)
200137.1 mm (1.5 in)
200247.5 mm (1.9 in)
200316.3 mm (0.6 in)
200453.6 mm (2.1 in)
200555.4 mm (2.2 in)
200646.0 mm (1.8 in)
200755.9 mm (2.2 in)
20080.0 mm (0.00 in)
200956.9 mm (2.2 in)
201039.4 mm (1.6 in)
201117.5 mm (0.7 in)
201243.7 mm (1.7 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Aculco (Smn) by year The wettest five days of the year at Aculco (Smn), 1961 to 2012. The record is 172.2 mm (6.8 in) in 2007, marked on the chart; the median year is 83.0 mm (3.3 in). 05010015020019701980199020002010Record: 172.2 mm (6.8 in) in 2007
The wettest five days of the year at Aculco (Smn), 1961 to 2012. The record is 172.2 mm (6.8 in) in 2007, marked on the chart; the median year is 83.0 mm (3.3 in).
Wettest five days (Rx5day) at Aculco (Smn) by year
YearWettest five days (Rx5day)
196117.0 mm (0.7 in)
196251.1 mm (2.0 in)
196361.3 mm (2.4 in)
1964166.4 mm (6.6 in)
196579.8 mm (3.1 in)
1966100.9 mm (4.0 in)
196820.8 mm (0.8 in)
196984.9 mm (3.3 in)
1970145.3 mm (5.7 in)
197184.5 mm (3.3 in)
197291.4 mm (3.6 in)
1973116.4 mm (4.6 in)
197496.2 mm (3.8 in)
197564.8 mm (2.6 in)
1976128.7 mm (5.1 in)
197780.0 mm (3.1 in)
197885.8 mm (3.4 in)
1979106.5 mm (4.2 in)
198066.6 mm (2.6 in)
1981160.3 mm (6.3 in)
198255.1 mm (2.2 in)
1983136.4 mm (5.4 in)
198475.8 mm (3.0 in)
1985119.4 mm (4.7 in)
198672.4 mm (2.9 in)
198725.1 mm (1.0 in)
198888.4 mm (3.5 in)
198979.6 mm (3.1 in)
199071.2 mm (2.8 in)
1991147.9 mm (5.8 in)
199276.7 mm (3.0 in)
199366.8 mm (2.6 in)
199494.2 mm (3.7 in)
199577.7 mm (3.1 in)
199681.8 mm (3.2 in)
199761.8 mm (2.4 in)
1998105.1 mm (4.1 in)
1999106.1 mm (4.2 in)
200064.5 mm (2.5 in)
2001103.2 mm (4.1 in)
200283.3 mm (3.3 in)
200344.0 mm (1.7 in)
2004101.6 mm (4.0 in)
200594.1 mm (3.7 in)
200689.2 mm (3.5 in)
2007172.2 mm (6.8 in)
20080.0 mm (0.00 in)
200983.0 mm (3.3 in)
201076.8 mm (3.0 in)
201137.1 mm (1.5 in)
201263.8 mm (2.5 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Aculco (Smn) by year The longest dry spell of the year at Aculco (Smn), 1961 to 2012. The record is 153 days in 1972, marked on the chart; the median year is 60 days. 05010015020019701980199020002010Record: 153 days in 1972
The longest dry spell of the year at Aculco (Smn), 1961 to 2012. The record is 153 days in 1972, marked on the chart; the median year is 60 days.
Longest dry spell (CDD) at Aculco (Smn) by year
YearLongest dry spell (CDD)
1961139 days
1962142 days
196325 days
196493 days
196550 days
196634 days
196890 days
196983 days
197040 days
197191 days
1972153 days
197395 days
197436 days
197599 days
197642 days
197752 days
197832 days
197976 days
198031 days
198132 days
198281 days
198369 days
198491 days
198547 days
198667 days
1987120 days
198860 days
198934 days
199040 days
199156 days
199231 days
199354 days
199470 days
199534 days
1996105 days
199777 days
1998114 days
199983 days
200083 days
200147 days
200229 days
200353 days
200469 days
200551 days
200649 days
200725 days
200861 days
2009117 days
201064 days
201146 days
201228 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

35 years, 1961 to 2010

A day with at least 47.5 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 91.0 mm (3.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Aculco (Smn): the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years47.5 mm (1.9 in)
5 years62.3 mm (2.5 in)
10 years70.7 mm (2.8 in)
25 years79.9 mm (3.1 in)
50 years85.8 mm (3.4 in)Longer than the 35 years of record
100 years91.0 mm (3.6 in)Longer than the 35 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, 35 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: 84.8 mm (3.3 in) in 1973; 82.8 mm (3.3 in) in 1991; 74.9 mm (2.9 in) in 1964.

Download the Data

  • Data for Aculco (Smn) standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Aculco (Smn) 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.

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