Built 2026-10-19 (19 October 2026)

Aquismon Weather Records (MXN00024003)

Record envelope, standing records and threshold days for Aquismon (MXN00024003), Mexico, with 51 years of record.

Key Facts for Aquismon

  • Aquismon (MXN00024003) is a weather station in Mexico at 21.62 latitude and -99.00 longitude, 33 m (108 ft) above sea level.
  • The station reports from 1961 to 2011, 51 years of record.
  • 1,464 records set at Aquismon still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Aquismon tied a daily record high maximum temperature of 35.6 C (96.1 F) on 26 October 2011.

About the Station

  • Location: Mexico, 21.62 latitude, -99.00 longitude.
  • Elevation: 33 m (108 ft).
  • Period of record: 1961 to 2011, 51 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 Aquismon, with 2026 drawn through them The band shows the record high and record low for each calendar day at Aquismon. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 01020304050 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Aquismon. 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 Aquismon, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan37.8 C (100.0 F)0.0 C (32.0 F)n/an/a
Feb39.4 C (102.9 F)1.7 C (35.1 F)n/an/a
Mar45.0 C (113.0 F)5.0 C (41.0 F)n/an/a
Apr50.0 C (122.0 F)8.3 C (46.9 F)n/an/a
May47.8 C (118.0 F)12.8 C (55.0 F)n/an/a
Jun47.8 C (118.0 F)15.0 C (59.0 F)n/an/a
Jul45.0 C (113.0 F)17.8 C (64.0 F)n/an/a
Aug40.6 C (105.1 F)18.9 C (66.0 F)n/an/a
Sep40.0 C (104.0 F)14.4 C (57.9 F)n/an/a
Oct39.4 C (102.9 F)10.0 C (50.0 F)n/an/a
Nov40.6 C (105.1 F)5.0 C (41.0 F)n/an/a
Dec38.9 C (102.0 F)0.0 C (32.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Aquismon by the year they were set 1,464 records at Aquismon still stand. 1963 holds the most, with 98. 02550751001961: 281962: 301963: 981964: 631965: 231966: 241967: 321968: 241969: 251970: 371971: 261972: 451973: 331974: 321975: 291976: 381977: 131978: 221979: 701980: 261981: 251982: 311983: 191984: 331985: 191986: 161987: 431988: 261989: 451990: 261991: 421992: 221993: 301994: 171995: 241996: 221997: 241998: 381999: 122000: 182001: 92002: 122003: 212004: 142005: 212006: 202007: 162008: 442010: 152011: 421961196619711976198119861991199620012006
1,464 records at Aquismon still stand. 1963 holds the most, with 98.
Standing records at Aquismon by the year they were set
Year setStanding records
196128
196230
196398
196463
196523
196624
196732
196824
196925
197037
197126
197245
197333
197432
197529
197638
197713
197822
197970
198026
198125
198231
198319
198433
198519
198616
198743
198826
198945
199026
199142
199222
199330
199417
199524
199622
199724
199838
199912
200018
20019
200212
200321
200414
200521
200620
200716
200844
201015
201142

All-Time Record Progression

2 new records
When Aquismon set new all-time records 2 all-time records were set at Aquismon between 20 September 1993 and 16 April 1998. Each dot is a new record. Record daily precipitationRecord high maximum temperature20 September 1993: Record daily precipitation 369.8 mm (14.6 in)16 April 1998: Record high maximum temperature 50.0 C (122.0 F)1995
2 all-time records were set at Aquismon between 20 September 1993 and 16 April 1998. Each dot is a new record.
When Aquismon set new all-time records
DateKindDetail
1993-09-20Record daily precipitationRecord daily precipitation 369.8 mm (14.6 in)
1998-04-16Record high maximum temperatureRecord high maximum temperature 50.0 C (122.0 F)

Wettest Day of Each Month

Sep: 369.8 mm (14.6 in)
Record daily precipitation for each month at Aquismon The wettest day on record for each calendar month at Aquismon. The most was 369.8 mm (14.6 in) on 20 September 1993. 0100200300400 Jan: 66.8 mm (2.6 in), 12 January 1990 Jan Feb: 115.8 mm (4.6 in), 20 February 1999 Feb Mar: 143.5 mm (5.6 in), 8 March 1972 Mar Apr: 114.6 mm (4.5 in), 18 April 1976 Apr May: 181.9 mm (7.2 in), 25 May 1993 May Jun: 235.5 mm (9.3 in), 16 June 1981 Jun Jul: 319.8 mm (12.6 in), 1 July 1991 Jul Aug: 232.9 mm (9.2 in), 27 August 1981 Aug Sep: 369.8 mm (14.6 in), 20 September 1993 Sep Oct: 228.3 mm (9.0 in), 16 October 1975 Oct Nov: 170.9 mm (6.7 in), 22 November 1989 Nov Dec: 127.0 mm (5.0 in), 4 December 1981 Dec
The wettest day on record for each calendar month at Aquismon. The most was 369.8 mm (14.6 in) on 20 September 1993.
Record daily precipitation for each month at Aquismon
MonthRecord daily precipitation (mm)Date
Jan66.8 mm (2.6 in)12 January 1990
Feb115.8 mm (4.6 in)20 February 1999
Mar143.5 mm (5.6 in)8 March 1972
Apr114.6 mm (4.5 in)18 April 1976
May181.9 mm (7.2 in)25 May 1993
Jun235.5 mm (9.3 in)16 June 1981
Jul319.8 mm (12.6 in)1 July 1991
Aug232.9 mm (9.2 in)27 August 1981
Sep369.8 mm (14.6 in)20 September 1993
Oct228.3 mm (9.0 in)16 October 1975
Nov170.9 mm (6.7 in)22 November 1989
Dec127.0 mm (5.0 in)4 December 1981

Period of Record Coverage

1961 to 2011
Days with data per year at Aquismon 50 years of record at Aquismon, 1961 to 2011. 2 years have data for under 90 percent of days and are left out of rankings: 1984, 2011. 1961: 361 of 365 days1962: 331 of 365 days1963: 332 of 365 days1964: 356 of 366 days1965: 361 of 365 days1966: 359 of 365 days1967: 360 of 365 days1968: 361 of 366 days1969: 355 of 365 days1970: 361 of 365 days1971: 359 of 365 days1972: 361 of 366 days1973: 359 of 365 days1974: 361 of 365 days1975: 359 of 365 days1976: 359 of 366 days1977: 332 of 365 days1978: 357 of 365 days1979: 360 of 365 days1980: 357 of 366 days1981: 361 of 365 days1982: 358 of 365 days1983: 333 of 365 days1984: 329 of 366 days1985: 337 of 365 days1986: 363 of 365 days1987: 364 of 365 days1988: 362 of 366 days1989: 358 of 365 days1990: 361 of 365 days1991: 365 of 365 days1992: 364 of 366 days1993: 364 of 365 days1994: 358 of 365 days1995: 360 of 365 days1996: 359 of 366 days1997: 356 of 365 days1998: 365 of 365 days1999: 365 of 365 days2000: 366 of 366 days2001: 365 of 365 days2002: 364 of 365 days2003: 365 of 365 days2004: 359 of 366 days2005: 362 of 365 days2006: 365 of 365 days2007: 364 of 365 days2008: 366 of 366 days2010: 365 of 365 days2011: 304 of 365 days19701980199020002010
50 years of record at Aquismon, 1961 to 2011. 2 years have data for under 90 percent of days and are left out of rankings: 1984, 2011.
Days with data per year at Aquismon
YearDays with dataShare of yearComplete
196136199%Yes
196233191%Yes
196333291%Yes
196435697%Yes
196536199%Yes
196635998%Yes
196736099%Yes
196836199%Yes
196935597%Yes
197036199%Yes
197135998%Yes
197236199%Yes
197335998%Yes
197436199%Yes
197535998%Yes
197635998%Yes
197733291%Yes
197835798%Yes
197936099%Yes
198035798%Yes
198136199%Yes
198235898%Yes
198333391%Yes
198432990%No
198533792%Yes
198636399%Yes
1987364100%Yes
198836299%Yes
198935898%Yes
199036199%Yes
1991365100%Yes
199236499%Yes
1993364100%Yes
199435898%Yes
199536099%Yes
199635998%Yes
199735698%Yes
1998365100%Yes
1999365100%Yes
2000366100%Yes
2001365100%Yes
2002364100%Yes
2003365100%Yes
200435998%Yes
200536299%Yes
2006365100%Yes
2007364100%Yes
2008366100%Yes
2010365100%Yes
201130483%No

Latest Records

20
Latest records at Aquismon
DateStationRecordValueBeat old record byOld record stoodSignificance
26 October 2011Aquismon, MXdaily high max (Tie)35.6 C (96.1 F)tie24 years3 of 100 (Routine)
23 October 2011Aquismon, MXdaily high max35.6 C (96.1 F)0.6 C (1.1 F)48 years20 of 100 (Routine)
19 October 2011Aquismon, MXdaily high max36.7 C (98.1 F)0.6 C (1.1 F)6 years8 of 100 (Routine)
17 October 2011Aquismon, MXdaily high max (Tie)37.8 C (100.0 F)tie4 years1 of 100 (Routine)
14 October 2011Aquismon, MXdaily high max36.7 C (98.1 F)1.1 C (2.0 F)32 years17 of 100 (Routine)
10 October 2011Aquismon, MXdaily high min25.0 C (77.0 F)1.1 C (2.0 F)38 years19 of 100 (Routine)
30 September 2011Aquismon, MXdaily high min (Tie)25.0 C (77.0 F)tie20 years2 of 100 (Routine)
29 September 2011Aquismon, MXmonthly high max (Tie)40.0 C (104.0 F)tie32 years6 of 100 (Routine)
28 September 2011Aquismon, MXdaily high max (Tie)38.9 C (102.0 F)tie32 years3 of 100 (Routine)
27 September 2011Aquismon, MXdaily high max38.9 C (102.0 F)2.2 C (4.0 F)33 years22 of 100 (Routine)
26 September 2011Aquismon, MXdaily high max38.9 C (102.0 F)2.2 C (4.0 F)16 years16 of 100 (Routine)
23 September 2011Aquismon, MXdaily high max (Tie)38.9 C (102.0 F)tie5 years1 of 100 (Routine)
22 September 2011Aquismon, MXdaily high max (Tie)38.9 C (102.0 F)tie4 years1 of 100 (Routine)
21 September 2011Aquismon, MXdaily high max38.9 C (102.0 F)3.3 C (5.9 F)37 years26 of 100 (Routine)
20 September 2011Aquismon, MXdaily high max (Tie)38.9 C (102.0 F)tie32 years3 of 100 (Routine)
19 September 2011Aquismon, MXdaily high max (Tie)37.8 C (100.0 F)tie24 years3 of 100 (Routine)
18 September 2011Aquismon, MXdaily high max (Tie)37.8 C (100.0 F)tie48 years4 of 100 (Routine)
16 September 2011Aquismon, MXdaily high max (Tie)37.8 C (100.0 F)tie24 years3 of 100 (Routine)
15 September 2011Aquismon, MXdaily high max37.8 C (100.0 F)1.1 C (2.0 F)29 years16 of 100 (Routine)
13 September 2011Aquismon, MXdaily high max (Tie)37.8 C (100.0 F)tie24 years3 of 100 (Routine)

Climate Trend

43 complete years, 1961 to 2010
Annual mean temperature at Aquismon as warming stripes, 1961 to 2010 One stripe for each of 43 complete years at Aquismon, 1961 to 2010. Blue stripes are years cooler than the station's own mean of 24.9 C (76.8 F); red stripes are warmer. The coolest year was 1966, at 23.5 C (74.3 F), and the warmest was 1998, at 26.3 C (79.4 F). The strongest colour marks a difference of 1.5 C (2.7 F). 1961: 24.6 C, -0.3 C from the station mean1964: 25.6 C, +0.7 C from the station mean1965: 24.2 C, -0.6 C from the station mean1966: 23.5 C, -1.4 C from the station mean1967: 24.3 C, -0.6 C from the station mean1968: 23.5 C, -1.4 C from the station mean1969: 24.2 C, -0.6 C from the station mean1970: 23.5 C, -1.4 C from the station mean1971: 24.8 C, -0.1 C from the station mean1972: 25.3 C, +0.4 C from the station mean1973: 24.8 C, -0.1 C from the station mean1974: 24.6 C, -0.3 C from the station mean1975: 25.0 C, +0.1 C from the station mean1976: 23.6 C, -1.3 C from the station mean1978: 24.6 C, -0.3 C from the station mean1979: 24.4 C, -0.5 C from the station mean1980: 24.4 C, -0.5 C from the station mean1981: 24.6 C, -0.3 C from the station mean1982: 25.3 C, +0.4 C from the station mean1986: 24.7 C, -0.1 C from the station mean1987: 24.1 C, -0.7 C from the station mean1988: 24.7 C, -0.1 C from the station mean1989: 25.2 C, +0.3 C from the station mean1990: 25.3 C, +0.4 C from the station mean1991: 25.3 C, +0.4 C from the station mean1992: 24.3 C, -0.6 C from the station mean1993: 24.9 C, 0.0 C from the station mean1994: 25.3 C, +0.4 C from the station mean1995: 25.6 C, +0.7 C from the station mean1996: 25.3 C, +0.4 C from the station mean1997: 25.1 C, +0.2 C from the station mean1998: 26.3 C, +1.4 C from the station mean1999: 25.6 C, +0.7 C from the station mean2000: 25.6 C, +0.8 C from the station mean2001: 25.2 C, +0.4 C from the station mean2002: 25.3 C, +0.4 C from the station mean2003: 25.6 C, +0.7 C from the station mean2004: 25.3 C, +0.4 C from the station mean2005: 25.6 C, +0.7 C from the station mean2006: 26.1 C, +1.2 C from the station mean2007: 25.3 C, +0.4 C from the station mean2008: 24.6 C, -0.3 C from the station mean2010: 24.7 C, -0.2 C from the station mean19611965197019751980198519901995200020052010
One stripe for each of 43 complete years at Aquismon, 1961 to 2010. Blue stripes are years cooler than the station's own mean of 24.9 C (76.8 F); red stripes are warmer. The coolest year was 1966, at 23.5 C (74.3 F), and the warmest was 1998, at 26.3 C (79.4 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at Aquismon as warming stripes, 1961 to 2010
YearAnnual mean temperatureDifference from the station mean
196124.6 C-0.32 C
196425.6 C+0.74 C
196524.2 C-0.64 C
196623.5 C-1.40 C
196724.3 C-0.58 C
196823.5 C-1.38 C
196924.2 C-0.64 C
197023.5 C-1.36 C
197124.8 C-0.06 C
197225.3 C+0.39 C
197324.8 C-0.12 C
197424.6 C-0.26 C
197525.0 C+0.09 C
197623.6 C-1.30 C
197824.6 C-0.27 C
197924.4 C-0.52 C
198024.4 C-0.47 C
198124.6 C-0.26 C
198225.3 C+0.42 C
198624.7 C-0.15 C
198724.1 C-0.74 C
198824.7 C-0.14 C
198925.2 C+0.27 C
199025.3 C+0.38 C
199125.3 C+0.39 C
199224.3 C-0.56 C
199324.9 C+0.01 C
199425.3 C+0.39 C
199525.6 C+0.72 C
199625.3 C+0.41 C
199725.1 C+0.19 C
199826.3 C+1.44 C
199925.6 C+0.72 C
200025.6 C+0.76 C
200125.2 C+0.36 C
200225.3 C+0.41 C
200325.6 C+0.72 C
200425.3 C+0.40 C
200525.6 C+0.73 C
200626.1 C+1.19 C
200725.3 C+0.40 C
200824.6 C-0.27 C
201024.7 C-0.21 C

The annual mean temperature here has risen by 0.3 C (0.2 to 0.4) per decade over 1961 to 2010. In Fahrenheit: 0.5 F (0.3 to 0.7) per decade. The slope is a straight line fitted to 43 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Aquismon
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.3 C (0.2 to 0.4) per decade0.5 F (0.3 to 0.7) per decade1961 to 201043Rise
Mean daily maximum0.4 C (0.3 to 0.6) per decade0.8 F (0.5 to 1.1) per decade1961 to 201043Rise
Mean daily minimum0.13 C (-0.01 to 0.27) per decade0.23 F (-0.01 to 0.48) per decade1961 to 201043Not 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

1961 to 2011
Yearly extremes at Aquismon: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)50.0 C (122.0 F)199841.7 C (107.1 F)50
Coldest night (TNn)0.0 C (32.0 F)19625.6 C (42.1 F)50
Wettest day (Rx1day)369.8 mm (14.6 in)1993147.8 mm (5.8 in)51
Wettest five days (Rx5day)844.2 mm (33.2 in)1991320.1 mm (12.6 in)51
Longest dry spell (CDD)66 days196323 days51

Hottest day (TXx)

Hottest day (TXx) at Aquismon by year The hottest day of the year at Aquismon, 1961 to 2011. The record is 50.0 C (122.0 F) in 1998, marked on the chart; the median year is 41.7 C (107.1 F). 3540455019701980199020002010Record: 50.0 C (122.0 F) in 1998
The hottest day of the year at Aquismon, 1961 to 2011. The record is 50.0 C (122.0 F) in 1998, marked on the chart; the median year is 41.7 C (107.1 F).
Hottest day (TXx) at Aquismon by year
YearHottest day (TXx)
196140.6 C (105.1 F)
196238.9 C (102.0 F)
196341.7 C (107.1 F)
196438.9 C (102.0 F)
196539.4 C (102.9 F)
196638.3 C (100.9 F)
196742.2 C (108.0 F)
196837.8 C (100.0 F)
196941.7 C (107.1 F)
197038.3 C (100.9 F)
197144.4 C (111.9 F)
197245.0 C (113.0 F)
197345.0 C (113.0 F)
197445.0 C (113.0 F)
197543.9 C (111.0 F)
197638.3 C (100.9 F)
197740.6 C (105.1 F)
197843.9 C (111.0 F)
197940.6 C (105.1 F)
198040.0 C (104.0 F)
198142.2 C (108.0 F)
198240.6 C (105.1 F)
198342.8 C (109.0 F)
198447.8 C (118.0 F)
198541.7 C (107.1 F)
198640.6 C (105.1 F)
198740.0 C (104.0 F)
198840.0 C (104.0 F)
198943.3 C (109.9 F)
199041.7 C (107.1 F)
199145.0 C (113.0 F)
199238.9 C (102.0 F)
199340.0 C (104.0 F)
199440.0 C (104.0 F)
199542.8 C (109.0 F)
199641.7 C (107.1 F)
199740.6 C (105.1 F)
199850.0 C (122.0 F)
199947.8 C (118.0 F)
200045.0 C (113.0 F)
200141.7 C (107.1 F)
200242.8 C (109.0 F)
200343.3 C (109.9 F)
200441.7 C (107.1 F)
200545.6 C (114.1 F)
200644.4 C (111.9 F)
200740.0 C (104.0 F)
200842.8 C (109.0 F)
2009n/a
201041.7 C (107.1 F)
201147.8 C (118.0 F)

Coldest night (TNn)

Coldest night (TNn) at Aquismon by year The coldest night of the year at Aquismon, 1961 to 2011. The record is 0.0 C (32.0 F) in 1962, marked on the chart; the median year is 5.6 C (42.1 F). 02.557.51019701980199020002010Record: 0.0 C (32.0 F) in 1962
The coldest night of the year at Aquismon, 1961 to 2011. The record is 0.0 C (32.0 F) in 1962, marked on the chart; the median year is 5.6 C (42.1 F).
Coldest night (TNn) at Aquismon by year
YearColdest night (TNn)
19617.8 C (46.0 F)
19620.0 C (32.0 F)
19632.8 C (37.0 F)
19647.8 C (46.0 F)
19655.0 C (41.0 F)
19662.2 C (36.0 F)
19672.8 C (37.0 F)
19685.0 C (41.0 F)
19695.6 C (42.1 F)
19704.4 C (39.9 F)
19716.1 C (43.0 F)
19726.1 C (43.0 F)
19733.9 C (39.0 F)
19746.1 C (43.0 F)
19751.7 C (35.1 F)
19765.0 C (41.0 F)
19775.0 C (41.0 F)
19786.7 C (44.1 F)
19792.8 C (37.0 F)
19805.0 C (41.0 F)
19817.8 C (46.0 F)
19825.0 C (41.0 F)
19837.8 C (46.0 F)
19845.6 C (42.1 F)
19852.8 C (37.0 F)
19865.6 C (42.1 F)
19875.0 C (41.0 F)
19885.0 C (41.0 F)
19890.0 C (32.0 F)
19906.7 C (44.1 F)
19918.9 C (48.0 F)
19925.6 C (42.1 F)
19935.6 C (42.1 F)
19946.1 C (43.0 F)
199510.0 C (50.0 F)
19964.4 C (39.9 F)
19972.2 C (36.0 F)
19987.8 C (46.0 F)
19995.6 C (42.1 F)
20006.1 C (43.0 F)
20016.7 C (44.1 F)
20026.7 C (44.1 F)
20035.0 C (41.0 F)
20043.9 C (39.0 F)
20057.8 C (46.0 F)
20065.6 C (42.1 F)
20077.8 C (46.0 F)
20088.9 C (48.0 F)
2009n/a
20105.6 C (42.1 F)
20111.7 C (35.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Aquismon by year The wettest day of the year at Aquismon, 1961 to 2011. The record is 369.8 mm (14.6 in) in 1993, marked on the chart; the median year is 147.8 mm (5.8 in). 010020030040019701980199020002010Record: 369.8 mm (14.6 in) in 1993
The wettest day of the year at Aquismon, 1961 to 2011. The record is 369.8 mm (14.6 in) in 1993, marked on the chart; the median year is 147.8 mm (5.8 in).
Wettest day (Rx1day) at Aquismon by year
YearWettest day (Rx1day)
196186.9 mm (3.4 in)
1962136.9 mm (5.4 in)
196385.9 mm (3.4 in)
196486.9 mm (3.4 in)
1965136.9 mm (5.4 in)
1966229.9 mm (9.1 in)
1967186.4 mm (7.3 in)
1968126.7 mm (5.0 in)
1969215.9 mm (8.5 in)
1970231.1 mm (9.1 in)
1971200.9 mm (7.9 in)
1972152.4 mm (6.0 in)
1973151.9 mm (6.0 in)
1974208.8 mm (8.2 in)
1975349.8 mm (13.8 in)
1976161.0 mm (6.3 in)
1977226.3 mm (8.9 in)
1978274.8 mm (10.8 in)
1979147.8 mm (5.8 in)
1980133.9 mm (5.3 in)
1981235.5 mm (9.3 in)
198296.8 mm (3.8 in)
1983157.0 mm (6.2 in)
1984154.9 mm (6.1 in)
1985134.9 mm (5.3 in)
1986122.9 mm (4.8 in)
1987119.9 mm (4.7 in)
1988325.9 mm (12.8 in)
1989223.8 mm (8.8 in)
199099.8 mm (3.9 in)
1991319.8 mm (12.6 in)
1992136.9 mm (5.4 in)
1993369.8 mm (14.6 in)
1994111.8 mm (4.4 in)
1995142.0 mm (5.6 in)
1996102.9 mm (4.1 in)
1997199.9 mm (7.9 in)
1998129.8 mm (5.1 in)
1999190.0 mm (7.5 in)
2000116.8 mm (4.6 in)
2001136.9 mm (5.4 in)
2002103.9 mm (4.1 in)
2003119.9 mm (4.7 in)
2004116.3 mm (4.6 in)
2005186.4 mm (7.3 in)
200688.9 mm (3.5 in)
2007228.9 mm (9.0 in)
2008239.8 mm (9.4 in)
2009114.8 mm (4.5 in)
2010184.9 mm (7.3 in)
201199.8 mm (3.9 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Aquismon by year The wettest five days of the year at Aquismon, 1961 to 2011. The record is 844.2 mm (33.2 in) in 1991, marked on the chart; the median year is 320.1 mm (12.6 in). 02004006008001,00019701980199020002010Record: 844.2 mm (33.2 in) in 1991
The wettest five days of the year at Aquismon, 1961 to 2011. The record is 844.2 mm (33.2 in) in 1991, marked on the chart; the median year is 320.1 mm (12.6 in).
Wettest five days (Rx5day) at Aquismon by year
YearWettest five days (Rx5day)
1961296.4 mm (11.7 in)
1962136.9 mm (5.4 in)
1963204.6 mm (8.1 in)
1964207.1 mm (8.2 in)
1965327.5 mm (12.9 in)
1966521.6 mm (20.5 in)
1967543.8 mm (21.4 in)
1968228.2 mm (9.0 in)
1969512.3 mm (20.2 in)
1970581.9 mm (22.9 in)
1971330.2 mm (13.0 in)
1972402.6 mm (15.9 in)
1973423.2 mm (16.7 in)
1974558.8 mm (22.0 in)
1975627.6 mm (24.7 in)
1976370.1 mm (14.6 in)
1977309.9 mm (12.2 in)
1978657.8 mm (25.9 in)
1979293.0 mm (11.5 in)
1980320.1 mm (12.6 in)
1981489.9 mm (19.3 in)
1982197.2 mm (7.8 in)
1983325.7 mm (12.8 in)
1984399.8 mm (15.7 in)
1985318.3 mm (12.5 in)
1986224.8 mm (8.9 in)
1987290.4 mm (11.4 in)
1988388.4 mm (15.3 in)
1989308.7 mm (12.2 in)
1990189.2 mm (7.4 in)
1991844.2 mm (33.2 in)
1992220.4 mm (8.7 in)
1993562.6 mm (22.1 in)
1994256.2 mm (10.1 in)
1995249.5 mm (9.8 in)
1996273.4 mm (10.8 in)
1997466.2 mm (18.4 in)
1998334.3 mm (13.2 in)
1999386.4 mm (15.2 in)
2000252.3 mm (9.9 in)
2001276.1 mm (10.9 in)
2002306.8 mm (12.1 in)
2003195.4 mm (7.7 in)
2004166.9 mm (6.6 in)
2005355.0 mm (14.0 in)
2006219.0 mm (8.6 in)
2007592.5 mm (23.3 in)
2008710.4 mm (28.0 in)
2009181.6 mm (7.1 in)
2010358.7 mm (14.1 in)
2011240.5 mm (9.5 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Aquismon by year The longest dry spell of the year at Aquismon, 1961 to 2011. The record is 66 days in 1963, marked on the chart; the median year is 23 days. 02040608019701980199020002010Record: 66 days in 1963
The longest dry spell of the year at Aquismon, 1961 to 2011. The record is 66 days in 1963, marked on the chart; the median year is 23 days.
Longest dry spell (CDD) at Aquismon by year
YearLongest dry spell (CDD)
196136 days
196242 days
196366 days
196446 days
196519 days
196622 days
196723 days
196813 days
196916 days
197033 days
197134 days
197214 days
197327 days
197425 days
197524 days
197620 days
197722 days
197814 days
197933 days
198019 days
198130 days
198222 days
198329 days
198421 days
198521 days
198630 days
198722 days
198822 days
198917 days
199023 days
199132 days
199216 days
199323 days
199416 days
199525 days
199644 days
199726 days
199827 days
199937 days
200028 days
200124 days
200227 days
200326 days
200420 days
200537 days
200625 days
200723 days
200821 days
200916 days
201022 days
201120 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

50 years, 1961 to 2010

A day with at least 154.6 mm (6.1 in) of rain is expected about once in 2 years. A day with at least 433.8 mm (17.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Aquismon: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years154.6 mm (6.1 in)
5 years216.4 mm (8.5 in)
10 years262.1 mm (10.3 in)
25 years325.8 mm (12.8 in)
50 years377.8 mm (14.9 in)
100 years433.8 mm (17.1 in)Longer than the 50 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, 50 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: 369.8 mm (14.6 in) in 1993; 349.8 mm (13.8 in) in 1975; 325.9 mm (12.8 in) in 1988.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Download the Data

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