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Alcomunga Weather Records (MXN00021009)

Record envelope, standing records and threshold days for Alcomunga (MXN00021009), Mexico, with 54 years of record.

Key Facts for Alcomunga

  • Alcomunga (MXN00021009) is a weather station in Mexico at 18.42 latitude and -97.02 longitude, 2,485 m (8,152 ft) above sea level.
  • The station reports from 1956 to 2009, 54 years of record.
  • 1,464 records set at Alcomunga still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Alcomunga tied a daily record low minimum temperature of 0.6 C (33.1 F) on 26 November 2009.

About the Station

  • Location: Mexico, 18.42 latitude, -97.02 longitude.
  • Elevation: 2,485 m (8,152 ft).
  • Period of record: 1956 to 2009, 54 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 Alcomunga, with 2026 drawn through them The band shows the record high and record low for each calendar day at Alcomunga. 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 Alcomunga. 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 Alcomunga, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan33.9 C (93.0 F)-7.2 C (19.0 F)n/an/a
Feb35.0 C (95.0 F)-9.4 C (15.1 F)n/an/a
Mar38.9 C (102.0 F)-2.2 C (28.0 F)n/an/a
Apr38.9 C (102.0 F)-3.3 C (26.1 F)n/an/a
May38.9 C (102.0 F)0.0 C (32.0 F)n/an/a
Jun35.0 C (95.0 F)0.0 C (32.0 F)n/an/a
Jul35.0 C (95.0 F)0.6 C (33.1 F)n/an/a
Aug32.8 C (91.0 F)-1.1 C (30.0 F)n/an/a
Sep32.8 C (91.0 F)0.0 C (32.0 F)n/an/a
Oct33.9 C (93.0 F)-5.0 C (23.0 F)n/an/a
Nov33.9 C (93.0 F)-7.2 C (19.0 F)n/an/a
Dec32.8 C (91.0 F)-5.0 C (23.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Alcomunga by the year they were set 1,464 records at Alcomunga still stand. 1976 holds the most, with 214. 01002003001956: 261957: 1161958: 1461959: 1131960: 1171961: 281962: 61963: 41964: 131965: 111966: 51967: 41968: 261969: 481970: 461971: 161972: 501973: 331974: 1091975: 1001976: 2141977: 331978: 281979: 71980: 111981: 31982: 11983: 41984: 91987: 91988: 111989: 141990: 51991: 371992: 31993: 71994: 82001: 82002: 62003: 102004: 42005: 22007: 32008: 42009: 6195619611966197119761981198819932004
1,464 records at Alcomunga still stand. 1976 holds the most, with 214.
Standing records at Alcomunga by the year they were set
Year setStanding records
195626
1957116
1958146
1959113
1960117
196128
19626
19634
196413
196511
19665
19674
196826
196948
197046
197116
197250
197333
1974109
1975100
1976214
197733
197828
19797
198011
19813
19821
19834
19849
19879
198811
198914
19905
199137
19923
19937
19948
20018
20026
200310
20044
20052
20073
20084
20096

Wettest Day of Each Month

Sep: 312.9 mm (12.3 in)
Record daily precipitation for each month at Alcomunga The wettest day on record for each calendar month at Alcomunga. The most was 312.9 mm (12.3 in) on 20 September 1974. 0100200300400 Jan: 70.9 mm (2.8 in), 17 January 1958 Jan Feb: 80.8 mm (3.2 in), 18 February 1965 Feb Mar: 70.9 mm (2.8 in), 20 March 1963 Mar Apr: 144.8 mm (5.7 in), 25 April 2007 Apr May: 62.0 mm (2.4 in), 19 May 1968 May Jun: 158.2 mm (6.2 in), 27 June 1976 Jun Jul: 128.5 mm (5.1 in), 9 July 2009 Jul Aug: 136.9 mm (5.4 in), 20 August 1969 Aug Sep: 312.9 mm (12.3 in), 20 September 1974 Sep Oct: 149.9 mm (5.9 in), 17 October 2009 Oct Nov: 88.4 mm (3.5 in), 27 November 2007 Nov Dec: 81.8 mm (3.2 in), 1 December 1988 Dec
The wettest day on record for each calendar month at Alcomunga. The most was 312.9 mm (12.3 in) on 20 September 1974.
Record daily precipitation for each month at Alcomunga
MonthRecord daily precipitation (mm)Date
Jan70.9 mm (2.8 in)17 January 1958
Feb80.8 mm (3.2 in)18 February 1965
Mar70.9 mm (2.8 in)20 March 1963
Apr144.8 mm (5.7 in)25 April 2007
May62.0 mm (2.4 in)19 May 1968
Jun158.2 mm (6.2 in)27 June 1976
Jul128.5 mm (5.1 in)9 July 2009
Aug136.9 mm (5.4 in)20 August 1969
Sep312.9 mm (12.3 in)20 September 1974
Oct149.9 mm (5.9 in)17 October 2009
Nov88.4 mm (3.5 in)27 November 2007
Dec81.8 mm (3.2 in)1 December 1988

Period of Record Coverage

1956 to 2009
Days with data per year at Alcomunga 46 years of record at Alcomunga, 1956 to 2009. 9 years have data for under 90 percent of days and are left out of rankings: 1956, 1987, 1989, 1990, 1992, 1995, 2001, 2004 and others. 1956: 231 of 366 days1957: 364 of 365 days1958: 359 of 365 days1959: 352 of 365 days1960: 345 of 366 days1961: 365 of 365 days1962: 364 of 365 days1963: 364 of 365 days1964: 335 of 366 days1965: 365 of 365 days1966: 365 of 365 days1967: 365 of 365 days1968: 366 of 366 days1969: 344 of 365 days1970: 363 of 365 days1971: 346 of 365 days1972: 366 of 366 days1973: 365 of 365 days1974: 365 of 365 days1975: 365 of 365 days1976: 364 of 366 days1977: 358 of 365 days1978: 362 of 365 days1979: 365 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 365 of 365 days1984: 335 of 366 days1987: 276 of 365 days1988: 366 of 366 days1989: 304 of 365 days1990: 101 of 365 days1991: 364 of 365 days1992: 139 of 366 days1993: 334 of 365 days1994: 365 of 365 days1995: 90 of 365 days2001: 31 of 365 days2002: 365 of 365 days2003: 365 of 365 days2004: 265 of 366 days2005: 275 of 365 days2007: 330 of 365 days2008: 357 of 366 days2009: 361 of 365 days1960197019801990
46 years of record at Alcomunga, 1956 to 2009. 9 years have data for under 90 percent of days and are left out of rankings: 1956, 1987, 1989, 1990, 1992, 1995, 2001, 2004 and others.
Days with data per year at Alcomunga
YearDays with dataShare of yearComplete
195623163%No
1957364100%Yes
195835998%Yes
195935296%Yes
196034594%Yes
1961365100%Yes
1962364100%Yes
1963364100%Yes
196433592%Yes
1965365100%Yes
1966365100%Yes
1967365100%Yes
1968366100%Yes
196934494%Yes
197036399%Yes
197134695%Yes
1972366100%Yes
1973365100%Yes
1974365100%Yes
1975365100%Yes
197636499%Yes
197735898%Yes
197836299%Yes
1979365100%Yes
1980366100%Yes
1981365100%Yes
1982365100%Yes
1983365100%Yes
198433592%Yes
198727676%No
1988366100%Yes
198930483%No
199010128%No
1991364100%Yes
199213938%No
199333492%Yes
1994365100%Yes
19959025%No
2001318%No
2002365100%Yes
2003365100%Yes
200426572%No
200527575%No
200733090%Yes
200835798%Yes
200936199%Yes

Latest Records

20
Latest records at Alcomunga
DateStationRecordValueBeat old record byOld record stoodSignificance
26 November 2009Alcomunga, MXdaily low min (Tie)0.6 C (33.1 F)tie34 years3 of 100 (Routine)
25 November 2009Alcomunga, MXdaily rain9.9 mm (0.39 in)2.0 mm (0.08 in)2 years6 of 100 (Routine)
3 November 2009Alcomunga, MXdaily low min (Tie)0.0 C (32.0 F)tie22 years2 of 100 (Routine)
24 October 2009Alcomunga, MXdaily low min0.0 C (32.0 F)0.6 C (1.1 F)18 years12 of 100 (Routine)
18 October 2009Alcomunga, MXdaily low min (Tie)0.0 C (32.0 F)tie35 years3 of 100 (Routine)
17 October 2009Alcomunga, MXmonthly rain149.9 mm (5.9 in)25.9 mm (1.0 in)51 years46 of 100 (Notable)
14 October 2009Alcomunga, MXdaily low min (Tie)0.0 C (32.0 F)tie18 years2 of 100 (Routine)
4 October 2009Alcomunga, MXdaily low min0.0 C (32.0 F)1.7 C (3.1 F)34 years20 of 100 (Routine)
1 October 2009Alcomunga, MXdaily low min (Tie)0.0 C (32.0 F)tie18 years2 of 100 (Routine)
26 September 2009Alcomunga, MXdaily rain60.2 mm (2.4 in)15.2 mm (0.6 in)20 years19 of 100 (Routine)
5 September 2009Alcomunga, MXdaily low min (Tie)2.8 C (37.0 F)tie31 years3 of 100 (Routine)
15 July 2009Alcomunga, MXdaily low min (Tie)3.9 C (39.0 F)tie36 years3 of 100 (Routine)
10 July 2009Alcomunga, MXdaily rain104.9 mm (4.1 in)58.9 mm (2.3 in)4 years39 of 100 (Notable)
9 July 2009Alcomunga, MXmonthly rain128.5 mm (5.1 in)1.5 mm (0.06 in)25 years22 of 100 (Routine)
4 July 2009Alcomunga, MXdaily low min (Tie)3.9 C (39.0 F)tie36 years4 of 100 (Routine)
28 April 2009Alcomunga, MXdaily rain53.8 mm (2.1 in)39.8 mm (1.6 in)36 years45 of 100 (Notable)
22 April 2009Alcomunga, MXdaily low max11.7 C (53.1 F)1.1 C (2.0 F)28 years15 of 100 (Routine)
1 April 2009Alcomunga, MXdaily low min (Tie)0.0 C (32.0 F)tie6 years1 of 100 (Routine)
23 March 2009Alcomunga, MXdaily low min (Tie)0.6 C (33.1 F)tie32 years3 of 100 (Routine)
22 March 2009Alcomunga, MXdaily low min0.6 C (33.1 F)1.1 C (2.0 F)32 years18 of 100 (Routine)

Climate Trend

33 complete years, 1957 to 2009
Annual mean temperature at Alcomunga as warming stripes, 1957 to 2009 One stripe for each of 33 complete years at Alcomunga, 1957 to 2009. Blue stripes are years cooler than the station's own mean of 13.0 C (55.4 F); red stripes are warmer. The coolest year was 1976, at 7.0 C (44.6 F), and the warmest was 1959, at 18.9 C (65.9 F). The strongest colour marks a difference of 6.1 C (11.0 F). 1957: 18.5 C, +5.5 C from the station mean1958: 18.8 C, +5.8 C from the station mean1959: 18.9 C, +5.9 C from the station mean1960: 18.8 C, +5.8 C from the station mean1961: 16.2 C, +3.2 C from the station mean1962: 13.8 C, +0.8 C from the station mean1963: 13.4 C, +0.4 C from the station mean1965: 13.5 C, +0.5 C from the station mean1966: 13.9 C, +0.9 C from the station mean1967: 13.5 C, +0.5 C from the station mean1968: 13.7 C, +0.7 C from the station mean1969: 14.6 C, +1.6 C from the station mean1970: 13.4 C, +0.4 C from the station mean1971: 12.6 C, -0.4 C from the station mean1972: 9.4 C, -3.6 C from the station mean1973: 10.4 C, -2.6 C from the station mean1974: 8.3 C, -4.7 C from the station mean1975: 8.3 C, -4.7 C from the station mean1976: 7.0 C, -6.0 C from the station mean1977: 11.9 C, -1.1 C from the station mean1978: 11.4 C, -1.6 C from the station mean1979: 11.9 C, -1.1 C from the station mean1980: 11.3 C, -1.7 C from the station mean1981: 11.7 C, -1.3 C from the station mean1982: 12.4 C, -0.6 C from the station mean1983: 12.6 C, -0.4 C from the station mean1988: 11.8 C, -1.2 C from the station mean1991: 11.6 C, -1.4 C from the station mean1994: 12.1 C, -0.9 C from the station mean2002: 13.9 C, +0.9 C from the station mean2003: 13.8 C, +0.8 C from the station mean2008: 13.4 C, +0.4 C from the station mean2009: 12.4 C, -0.6 C from the station mean19571960196519701975198019851990199520002005
One stripe for each of 33 complete years at Alcomunga, 1957 to 2009. Blue stripes are years cooler than the station's own mean of 13.0 C (55.4 F); red stripes are warmer. The coolest year was 1976, at 7.0 C (44.6 F), and the warmest was 1959, at 18.9 C (65.9 F). The strongest colour marks a difference of 6.1 C (11.0 F).
Annual mean temperature at Alcomunga as warming stripes, 1957 to 2009
YearAnnual mean temperatureDifference from the station mean
195718.5 C+5.48 C
195818.8 C+5.83 C
195918.9 C+5.86 C
196018.8 C+5.78 C
196116.2 C+3.17 C
196213.8 C+0.81 C
196313.4 C+0.44 C
196513.5 C+0.51 C
196613.9 C+0.94 C
196713.5 C+0.46 C
196813.7 C+0.68 C
196914.6 C+1.57 C
197013.4 C+0.36 C
197112.6 C-0.39 C
19729.4 C-3.60 C
197310.4 C-2.64 C
19748.3 C-4.66 C
19758.3 C-4.71 C
19767.0 C-6.01 C
197711.9 C-1.15 C
197811.4 C-1.61 C
197911.9 C-1.13 C
198011.3 C-1.67 C
198111.7 C-1.28 C
198212.4 C-0.64 C
198312.6 C-0.36 C
198811.8 C-1.24 C
199111.6 C-1.42 C
199412.1 C-0.92 C
200213.9 C+0.89 C
200313.8 C+0.78 C
200813.4 C+0.37 C
200912.4 C-0.57 C

The annual mean temperature here has fallen by 0.8 C (0.1 to 1.4) per decade over 1957 to 2009. In Fahrenheit: 1.4 F (0.2 to 2.6) per decade. The slope is a straight line fitted to 33 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Alcomunga
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature-0.8 C (-1.4 to -0.1) per decade-1.4 F (-2.6 to -0.2) per decade1957 to 200933Fall
Mean daily maximum-1.1 C (-2.1 to -0.1) per decade-1.9 F (-3.7 to -0.2) per decade1957 to 200933Fall
Mean daily minimum-0.44 C (-0.91 to 0.03) per decade-0.80 F (-1.65 to 0.05) per decade1957 to 200933Not 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

1956 to 2009
Yearly extremes at Alcomunga: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)38.9 C (102.0 F)195827.8 C (82.0 F)46
Coldest night (TNn)-9.4 C (15.1 F)19760.0 C (32.0 F)46
Wettest day (Rx1day)312.9 mm (12.3 in)197483.6 mm (3.3 in)46
Wettest five days (Rx5day)496.9 mm (19.6 in)1974215.7 mm (8.5 in)46
Longest dry spell (CDD)123 days199432 days46

Hottest day (TXx)

Hottest day (TXx) at Alcomunga by year The hottest day of the year at Alcomunga, 1956 to 2009. The record is 38.9 C (102.0 F) in 1958, marked on the chart; the median year is 27.8 C (82.0 F). 202530354019601970198019902000Record: 38.9 C (102.0 F) in 1958
The hottest day of the year at Alcomunga, 1956 to 2009. The record is 38.9 C (102.0 F) in 1958, marked on the chart; the median year is 27.8 C (82.0 F).
Hottest day (TXx) at Alcomunga by year
YearHottest day (TXx)
195632.8 C (91.0 F)
195736.7 C (98.1 F)
195838.9 C (102.0 F)
195935.6 C (96.1 F)
196038.9 C (102.0 F)
196136.7 C (98.1 F)
196230.6 C (87.1 F)
196327.8 C (82.0 F)
196430.0 C (86.0 F)
196527.8 C (82.0 F)
196628.9 C (84.0 F)
196727.8 C (82.0 F)
196828.9 C (84.0 F)
196928.9 C (84.0 F)
197027.8 C (82.0 F)
197131.7 C (89.1 F)
197225.0 C (77.0 F)
197327.8 C (82.0 F)
197422.8 C (73.0 F)
197522.8 C (73.0 F)
197620.0 C (68.0 F)
197725.6 C (78.1 F)
197826.7 C (80.1 F)
197926.7 C (80.1 F)
198026.7 C (80.1 F)
198124.4 C (75.9 F)
198226.1 C (79.0 F)
198328.9 C (84.0 F)
198430.0 C (86.0 F)
198728.9 C (84.0 F)
198826.7 C (80.1 F)
198922.8 C (73.0 F)
199025.6 C (78.1 F)
199126.7 C (80.1 F)
199225.6 C (78.1 F)
199323.9 C (75.0 F)
199428.9 C (84.0 F)
199528.9 C (84.0 F)
200125.6 C (78.1 F)
200227.8 C (82.0 F)
200330.0 C (86.0 F)
200430.0 C (86.0 F)
200526.7 C (80.1 F)
200730.0 C (86.0 F)
200828.9 C (84.0 F)
200930.0 C (86.0 F)

Coldest night (TNn)

Coldest night (TNn) at Alcomunga by year The coldest night of the year at Alcomunga, 1956 to 2009. The record is -9.4 C (15.1 F) in 1976, marked on the chart; the median year is 0.0 C (32.0 F). -10-50519601970198019902000Record: -9.4 C (15.1 F) in 1976
The coldest night of the year at Alcomunga, 1956 to 2009. The record is -9.4 C (15.1 F) in 1976, marked on the chart; the median year is 0.0 C (32.0 F).
Coldest night (TNn) at Alcomunga by year
YearColdest night (TNn)
19562.8 C (37.0 F)
19570.6 C (33.1 F)
19582.8 C (37.0 F)
19592.8 C (37.0 F)
19600.6 C (33.1 F)
19613.9 C (39.0 F)
19623.9 C (39.0 F)
19633.9 C (39.0 F)
19640.6 C (33.1 F)
19653.9 C (39.0 F)
19661.7 C (35.1 F)
19670.6 C (33.1 F)
19680.6 C (33.1 F)
19692.8 C (37.0 F)
19700.6 C (33.1 F)
19710.0 C (32.0 F)
1972-4.4 C (24.1 F)
1973-7.2 C (19.0 F)
1974-7.2 C (19.0 F)
1975-7.2 C (19.0 F)
1976-9.4 C (15.1 F)
1977-5.0 C (23.0 F)
1978-3.3 C (26.1 F)
19790.6 C (33.1 F)
19800.0 C (32.0 F)
19810.0 C (32.0 F)
19820.0 C (32.0 F)
1983-3.3 C (26.1 F)
1984-2.8 C (27.0 F)
1987-1.1 C (30.0 F)
1988-2.2 C (28.0 F)
1989-2.2 C (28.0 F)
19900.0 C (32.0 F)
1991-2.2 C (28.0 F)
19920.0 C (32.0 F)
19930.0 C (32.0 F)
19940.0 C (32.0 F)
19951.7 C (35.1 F)
2001-7.2 C (19.0 F)
20020.0 C (32.0 F)
20030.0 C (32.0 F)
20040.0 C (32.0 F)
20050.0 C (32.0 F)
20070.0 C (32.0 F)
20080.0 C (32.0 F)
20090.0 C (32.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Alcomunga by year The wettest day of the year at Alcomunga, 1956 to 2009. The record is 312.9 mm (12.3 in) in 1974, marked on the chart; the median year is 83.6 mm (3.3 in). 010020030040019601970198019902000Record: 312.9 mm (12.3 in) in 1974
The wettest day of the year at Alcomunga, 1956 to 2009. The record is 312.9 mm (12.3 in) in 1974, marked on the chart; the median year is 83.6 mm (3.3 in).
Wettest day (Rx1day) at Alcomunga by year
YearWettest day (Rx1day)
195663.0 mm (2.5 in)
195770.1 mm (2.8 in)
1958124.0 mm (4.9 in)
195975.4 mm (3.0 in)
1960104.9 mm (4.1 in)
196169.9 mm (2.8 in)
196239.9 mm (1.6 in)
196370.9 mm (2.8 in)
196456.9 mm (2.2 in)
196580.8 mm (3.2 in)
196659.9 mm (2.4 in)
196759.9 mm (2.4 in)
196879.8 mm (3.1 in)
1969136.9 mm (5.4 in)
197088.9 mm (3.5 in)
197163.0 mm (2.5 in)
197290.9 mm (3.6 in)
1973146.3 mm (5.8 in)
1974312.9 mm (12.3 in)
197586.9 mm (3.4 in)
1976158.2 mm (6.2 in)
197793.5 mm (3.7 in)
197864.8 mm (2.6 in)
197982.8 mm (3.3 in)
198059.9 mm (2.4 in)
198190.4 mm (3.6 in)
198295.8 mm (3.8 in)
1983127.0 mm (5.0 in)
1984125.2 mm (4.9 in)
198780.3 mm (3.2 in)
198885.1 mm (3.4 in)
198982.8 mm (3.3 in)
199067.8 mm (2.7 in)
199172.9 mm (2.9 in)
199284.3 mm (3.3 in)
199395.0 mm (3.7 in)
199448.3 mm (1.9 in)
199519.8 mm (0.8 in)
200131.0 mm (1.2 in)
2002112.8 mm (4.4 in)
2003108.5 mm (4.3 in)
200457.4 mm (2.3 in)
200585.9 mm (3.4 in)
2007144.8 mm (5.7 in)
200890.4 mm (3.6 in)
2009149.9 mm (5.9 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Alcomunga by year The wettest five days of the year at Alcomunga, 1956 to 2009. The record is 496.9 mm (19.6 in) in 1974, marked on the chart; the median year is 215.7 mm (8.5 in). 020040060019601970198019902000Record: 496.9 mm (19.6 in) in 1974
The wettest five days of the year at Alcomunga, 1956 to 2009. The record is 496.9 mm (19.6 in) in 1974, marked on the chart; the median year is 215.7 mm (8.5 in).
Wettest five days (Rx5day) at Alcomunga by year
YearWettest five days (Rx5day)
1956118.4 mm (4.7 in)
1957149.7 mm (5.9 in)
1958371.1 mm (14.6 in)
1959159.5 mm (6.3 in)
1960349.5 mm (13.8 in)
1961218.5 mm (8.6 in)
1962135.9 mm (5.4 in)
1963173.6 mm (6.8 in)
1964117.4 mm (4.6 in)
1965242.9 mm (9.6 in)
1966155.4 mm (6.1 in)
1967129.5 mm (5.1 in)
1968142.8 mm (5.6 in)
1969373.1 mm (14.7 in)
1970273.1 mm (10.8 in)
1971142.2 mm (5.6 in)
1972306.3 mm (12.1 in)
1973270.2 mm (10.6 in)
1974496.9 mm (19.6 in)
1975237.5 mm (9.4 in)
1976326.8 mm (12.9 in)
1977163.7 mm (6.4 in)
1978188.7 mm (7.4 in)
1979263.1 mm (10.4 in)
1980164.4 mm (6.5 in)
1981192.8 mm (7.6 in)
1982212.9 mm (8.4 in)
1983207.3 mm (8.2 in)
1984206.3 mm (8.1 in)
1987221.7 mm (8.7 in)
1988280.9 mm (11.1 in)
1989235.5 mm (9.3 in)
1990179.7 mm (7.1 in)
1991255.5 mm (10.1 in)
1992221.7 mm (8.7 in)
1993293.2 mm (11.5 in)
1994130.3 mm (5.1 in)
199519.8 mm (0.8 in)
200172.9 mm (2.9 in)
2002153.7 mm (6.1 in)
2003276.3 mm (10.9 in)
2004158.5 mm (6.2 in)
2005230.4 mm (9.1 in)
2007220.1 mm (8.7 in)
2008247.9 mm (9.8 in)
2009332.9 mm (13.1 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Alcomunga by year The longest dry spell of the year at Alcomunga, 1956 to 2009. The record is 123 days in 1994, marked on the chart; the median year is 32 days. 05010015019601970198019902000Record: 123 days in 1994
The longest dry spell of the year at Alcomunga, 1956 to 2009. The record is 123 days in 1994, marked on the chart; the median year is 32 days.
Longest dry spell (CDD) at Alcomunga by year
YearLongest dry spell (CDD)
195614 days
195720 days
195855 days
195926 days
196036 days
196149 days
196232 days
196345 days
196457 days
196549 days
196632 days
196741 days
196837 days
196926 days
197078 days
197116 days
197229 days
197340 days
197416 days
197557 days
197621 days
197719 days
197846 days
197929 days
198024 days
198142 days
198232 days
198372 days
198487 days
198725 days
198834 days
198917 days
199026 days
199157 days
199238 days
199372 days
1994123 days
199555 days
200123 days
200223 days
200366 days
200424 days
200511 days
200727 days
200818 days
200915 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

39 years, 1957 to 2009

A day with at least 85.9 mm (3.4 in) of rain is expected about once in 2 years. A day with at least 268.9 mm (10.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Alcomunga: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years85.9 mm (3.4 in)
5 years119.9 mm (4.7 in)
10 years147.4 mm (5.8 in)
25 years189.2 mm (7.4 in)
50 years226.2 mm (8.9 in)Longer than the 39 years of record
100 years268.9 mm (10.6 in)Longer than the 39 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, 39 years of values from 1957 to 2009.

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: 312.9 mm (12.3 in) in 1974; 158.2 mm (6.2 in) in 1976; 149.9 mm (5.9 in) in 2009.

Download the Data

  • Data for Alcomunga standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Alcomunga 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).