Daily records
Page built 2026-10-18
Data as of 2025-12-31
Search
Built 2026-10-18 (18 October 2026)

Aquiles Serdan 46 Weather Records (MXN00009003)

Record envelope, standing records and threshold days for Aquiles Serdan 46 (MXN00009003), Mexico, with 56 years of record.

Key Facts for Aquiles Serdan 46

  • Aquiles Serdan 46 (MXN00009003) is a weather station in Mexico at 19.47 latitude and -99.18 longitude, 2,255 m (7,398 ft) above sea level.
  • The station reports from 1933 to 1988, 56 years of record.
  • 1,464 records set at Aquiles Serdan 46 still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Aquiles Serdan 46 set a daily record high minimum temperature of 8.9 C (48.0 F) on 25 December 1988.

About the Station

  • Location: Mexico, 19.47 latitude, -99.18 longitude.
  • Elevation: 2,255 m (7,398 ft).
  • Period of record: 1933 to 1988, 56 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 Aquiles Serdan 46, with 2026 drawn through them The band shows the record high and record low for each calendar day at Aquiles Serdan 46. 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 Aquiles Serdan 46. 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 Aquiles Serdan 46, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan31.7 C (89.1 F)-6.1 C (21.0 F)n/an/a
Feb33.9 C (93.0 F)-4.4 C (24.1 F)n/an/a
Mar33.9 C (93.0 F)0.0 C (32.0 F)n/an/a
Apr34.4 C (93.9 F)2.2 C (36.0 F)n/an/a
May34.4 C (93.9 F)2.2 C (36.0 F)n/an/a
Jun33.3 C (91.9 F)7.2 C (45.0 F)n/an/a
Jul28.9 C (84.0 F)7.2 C (45.0 F)n/an/a
Aug29.4 C (84.9 F)6.7 C (44.1 F)n/an/a
Sep30.0 C (86.0 F)5.0 C (41.0 F)n/an/a
Oct31.1 C (88.0 F)0.6 C (33.1 F)n/an/a
Nov30.6 C (87.1 F)-2.2 C (28.0 F)n/an/a
Dec30.0 C (86.0 F)-2.8 C (27.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Aquiles Serdan 46 by the year they were set 1,464 records at Aquiles Serdan 46 still stand. 1956 holds the most, with 106. 0501001501955: 441956: 1061957: 661958: 581959: 431960: 411961: 341962: 231963: 241964: 301965: 251966: 771967: 451968: 201969: 721970: 1011971: 551972: 371973: 491974: 221975: 161976: 281977: 291978: 361979: 371980: 361981: 361982: 531983: 521984: 321985: 291986: 171987: 661988: 25195519591963196719711975197919831987
1,464 records at Aquiles Serdan 46 still stand. 1956 holds the most, with 106.
Standing records at Aquiles Serdan 46 by the year they were set
Year setStanding records
195544
1956106
195766
195858
195943
196041
196134
196223
196324
196430
196525
196677
196745
196820
196972
1970101
197155
197237
197349
197422
197516
197628
197729
197836
197937
198036
198136
198253
198352
198432
198529
198617
198766
198825

Wettest Day of Each Month

Aug: 70.4 mm (2.8 in)
Record daily precipitation for each month at Aquiles Serdan 46 The wettest day on record for each calendar month at Aquiles Serdan 46. The most was 70.4 mm (2.8 in) on 18 August 1960. 020406080 Jan: 34.3 mm (1.4 in), 10 January 1967 Jan Feb: 21.6 mm (0.9 in), 21 February 1965 Feb Mar: 30.2 mm (1.2 in), 16 March 1978 Mar Apr: 46.0 mm (1.8 in), 13 April 1962 Apr May: 55.9 mm (2.2 in), 29 May 1956 May Jun: 57.7 mm (2.3 in), 10 June 1986 Jun Jul: 51.1 mm (2.0 in), 26 July 1981 Jul Aug: 70.4 mm (2.8 in), 18 August 1960 Aug Sep: 60.5 mm (2.4 in), 18 September 1987 Sep Oct: 51.6 mm (2.0 in), 13 October 1978 Oct Nov: 23.4 mm (0.9 in), 3 November 1980 Nov Dec: 21.6 mm (0.9 in), 1 December 1976 Dec
The wettest day on record for each calendar month at Aquiles Serdan 46. The most was 70.4 mm (2.8 in) on 18 August 1960.
Record daily precipitation for each month at Aquiles Serdan 46
MonthRecord daily precipitation (mm)Date
Jan34.3 mm (1.4 in)10 January 1967
Feb21.6 mm (0.9 in)21 February 1965
Mar30.2 mm (1.2 in)16 March 1978
Apr46.0 mm (1.8 in)13 April 1962
May55.9 mm (2.2 in)29 May 1956
Jun57.7 mm (2.3 in)10 June 1986
Jul51.1 mm (2.0 in)26 July 1981
Aug70.4 mm (2.8 in)18 August 1960
Sep60.5 mm (2.4 in)18 September 1987
Oct51.6 mm (2.0 in)13 October 1978
Nov23.4 mm (0.9 in)3 November 1980
Dec21.6 mm (0.9 in)1 December 1976

Period of Record Coverage

1955 to 1988
Days with data per year at Aquiles Serdan 46 34 years of record at Aquiles Serdan 46, 1955 to 1988. 2 years have data for under 90 percent of days and are left out of rankings: 1955, 1986. 1955: 153 of 365 days1956: 366 of 366 days1957: 365 of 365 days1958: 364 of 365 days1959: 365 of 365 days1960: 366 of 366 days1961: 364 of 365 days1962: 365 of 365 days1963: 365 of 365 days1964: 366 of 366 days1965: 365 of 365 days1966: 365 of 365 days1967: 347 of 365 days1968: 357 of 366 days1969: 364 of 365 days1970: 356 of 365 days1971: 335 of 365 days1972: 366 of 366 days1973: 365 of 365 days1974: 365 of 365 days1975: 337 of 365 days1976: 366 of 366 days1977: 365 of 365 days1978: 364 of 365 days1979: 365 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 365 of 365 days1984: 366 of 366 days1985: 365 of 365 days1986: 304 of 365 days1987: 334 of 365 days1988: 366 of 366 days1955196019651970197519801985
34 years of record at Aquiles Serdan 46, 1955 to 1988. 2 years have data for under 90 percent of days and are left out of rankings: 1955, 1986.
Days with data per year at Aquiles Serdan 46
YearDays with dataShare of yearComplete
195515342%No
1956366100%Yes
1957365100%Yes
1958364100%Yes
1959365100%Yes
1960366100%Yes
1961364100%Yes
1962365100%Yes
1963365100%Yes
1964366100%Yes
1965365100%Yes
1966365100%Yes
196734795%Yes
196835798%Yes
1969364100%Yes
197035698%Yes
197133592%Yes
1972366100%Yes
1973365100%Yes
1974365100%Yes
197533792%Yes
1976366100%Yes
1977365100%Yes
1978364100%Yes
1979365100%Yes
1980366100%Yes
1981365100%Yes
1982365100%Yes
1983365100%Yes
1984366100%Yes
1985365100%Yes
198630483%No
198733492%Yes
1988366100%Yes

Latest Records

20
Latest records at Aquiles Serdan 46
DateStationRecordValueBeat old record byOld record stoodSignificance
25 December 1988Aquiles Serdan 46, MXdaily high min8.9 C (48.0 F)0.6 C (1.1 F)7 years7 of 100 (Routine)
25 December 1988Aquiles Serdan 46, MXdaily high max (Tie)25.0 C (77.0 F)tie18 years2 of 100 (Routine)
15 December 1988Aquiles Serdan 46, MXdaily high min (Tie)10.0 C (50.0 F)tie16 years1 of 100 (Routine)
12 December 1988Aquiles Serdan 46, MXdaily high min (Tie)10.0 C (50.0 F)tie6 years1 of 100 (Routine)
22 November 1988Aquiles Serdan 46, MXdaily high min (Tie)10.0 C (50.0 F)tie16 years1 of 100 (Routine)
2 November 1988Aquiles Serdan 46, MXdaily low min2.8 C (37.0 F)0.5 C (0.9 F)33 years13 of 100 (Routine)
13 October 1988Aquiles Serdan 46, MXdaily low max (Tie)17.8 C (64.0 F)tie5 years1 of 100 (Routine)
2 October 1988Aquiles Serdan 46, MXdaily high min (Tie)13.3 C (55.9 F)tie12 years1 of 100 (Routine)
11 September 1988Aquiles Serdan 46, MXdaily low min8.9 C (48.0 F)1.1 C (2.0 F)24 years16 of 100 (Routine)
10 September 1988Aquiles Serdan 46, MXdaily low min6.7 C (44.1 F)2.7 C (4.9 F)24 years27 of 100 (Routine)
5 September 1988Aquiles Serdan 46, MXdaily low max (Tie)16.7 C (62.1 F)tie4 years1 of 100 (Routine)
22 August 1988Aquiles Serdan 46, MXdaily rain33.5 mm (1.3 in)3.5 mm (0.14 in)49 years23 of 100 (Routine)
18 August 1988Aquiles Serdan 46, MXdaily low max (Tie)20.0 C (68.0 F)tie12 years1 of 100 (Routine)
17 August 1988Aquiles Serdan 46, MXdaily high min13.9 C (57.0 F)0.6 C (1.1 F)8 years9 of 100 (Routine)
16 August 1988Aquiles Serdan 46, MXdaily high min13.9 C (57.0 F)0.6 C (1.1 F)19 years12 of 100 (Routine)
12 August 1988Aquiles Serdan 46, MXdaily low max20.6 C (69.1 F)1.1 C (2.0 F)23 years14 of 100 (Routine)
10 August 1988Aquiles Serdan 46, MXmonthly high min (Tie)15.0 C (59.0 F)tie7 years3 of 100 (Routine)
7 August 1988Aquiles Serdan 46, MXdaily high min (Tie)13.3 C (55.9 F)tie18 years2 of 100 (Routine)
3 August 1988Aquiles Serdan 46, MXdaily high max (Tie)27.2 C (81.0 F)tie21 years2 of 100 (Routine)
2 August 1988Aquiles Serdan 46, MXdaily high min (Tie)13.9 C (57.0 F)tie18 years2 of 100 (Routine)

Climate Trend

29 complete years, 1956 to 1988
Annual mean temperature at Aquiles Serdan 46 as warming stripes, 1956 to 1988 One stripe for each of 29 complete years at Aquiles Serdan 46, 1956 to 1988. Blue stripes are years cooler than the station's own mean of 16.9 C (62.3 F); red stripes are warmer. The coolest year was 1956, at 14.8 C (58.6 F), and the warmest was 1982, at 18.2 C (64.8 F). The strongest colour marks a difference of 2.1 C (3.8 F). 1956: 14.8 C, -2.1 C from the station mean1957: 15.6 C, -1.2 C from the station mean1958: 15.7 C, -1.2 C from the station mean1959: 15.6 C, -1.3 C from the station mean1960: 15.8 C, -1.0 C from the station mean1961: 16.0 C, -0.8 C from the station mean1962: 16.4 C, -0.4 C from the station mean1963: 16.2 C, -0.7 C from the station mean1964: 16.5 C, -0.4 C from the station mean1965: 16.0 C, -0.8 C from the station mean1966: 16.5 C, -0.4 C from the station mean1967: 16.9 C, 0.0 C from the station mean1968: 16.8 C, -0.1 C from the station mean1969: 17.7 C, +0.9 C from the station mean1970: 17.6 C, +0.8 C from the station mean1972: 17.3 C, +0.5 C from the station mean1973: 17.6 C, +0.8 C from the station mean1974: 17.0 C, +0.2 C from the station mean1976: 16.9 C, +0.1 C from the station mean1977: 17.5 C, +0.6 C from the station mean1978: 17.6 C, +0.7 C from the station mean1979: 17.6 C, +0.8 C from the station mean1980: 17.8 C, +1.0 C from the station mean1981: 17.5 C, +0.7 C from the station mean1982: 18.2 C, +1.4 C from the station mean1983: 17.6 C, +0.8 C from the station mean1984: 17.2 C, +0.4 C from the station mean1985: 17.1 C, +0.2 C from the station mean1988: 17.6 C, +0.7 C from the station mean1956196019651970197519801985
One stripe for each of 29 complete years at Aquiles Serdan 46, 1956 to 1988. Blue stripes are years cooler than the station's own mean of 16.9 C (62.3 F); red stripes are warmer. The coolest year was 1956, at 14.8 C (58.6 F), and the warmest was 1982, at 18.2 C (64.8 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Aquiles Serdan 46 as warming stripes, 1956 to 1988
YearAnnual mean temperatureDifference from the station mean
195614.8 C-2.05 C
195715.6 C-1.21 C
195815.7 C-1.19 C
195915.6 C-1.25 C
196015.8 C-1.04 C
196116.0 C-0.81 C
196216.4 C-0.41 C
196316.2 C-0.65 C
196416.5 C-0.35 C
196516.0 C-0.84 C
196616.5 C-0.39 C
196716.9 C+0.05 C
196816.8 C-0.05 C
196917.7 C+0.86 C
197017.6 C+0.77 C
197217.3 C+0.46 C
197317.6 C+0.77 C
197417.0 C+0.16 C
197616.9 C+0.07 C
197717.5 C+0.60 C
197817.6 C+0.73 C
197917.6 C+0.78 C
198017.8 C+0.99 C
198117.5 C+0.66 C
198218.2 C+1.37 C
198317.6 C+0.76 C
198417.2 C+0.36 C
198517.1 C+0.24 C
198817.6 C+0.73 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

1933 to 1988
Yearly extremes at Aquiles Serdan 46: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)34.4 C (93.9 F)197332.2 C (90.0 F)34
Coldest night (TNn)-6.1 C (21.0 F)19560.0 C (32.0 F)34
Wettest day (Rx1day)70.4 mm (2.8 in)196040.0 mm (1.6 in)54
Wettest five days (Rx5day)128.3 mm (5.1 in)195675.9 mm (3.0 in)54
Longest dry spell (CDD)129 days198855 days54

Hottest day (TXx)

Hottest day (TXx) at Aquiles Serdan 46 by year The hottest day of the year at Aquiles Serdan 46, 1933 to 1988. The record is 34.4 C (93.9 F) in 1973, marked on the chart; the median year is 32.2 C (90.0 F). 2527.53032.53519401950196019701980Record: 34.4 C (93.9 F) in 1973
The hottest day of the year at Aquiles Serdan 46, 1933 to 1988. The record is 34.4 C (93.9 F) in 1973, marked on the chart; the median year is 32.2 C (90.0 F).
Hottest day (TXx) at Aquiles Serdan 46 by year
YearHottest day (TXx)
1933n/a
1934n/a
1935n/a
1936n/a
1937n/a
1938n/a
1939n/a
1940n/a
1941n/a
1942n/a
1943n/a
1944n/a
1945n/a
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
1951n/a
1952n/a
195525.6 C (78.1 F)
195630.0 C (86.0 F)
195731.1 C (88.0 F)
195830.0 C (86.0 F)
195929.4 C (84.9 F)
196030.6 C (87.1 F)
196131.7 C (89.1 F)
196231.1 C (88.0 F)
196330.6 C (87.1 F)
196432.2 C (90.0 F)
196530.6 C (87.1 F)
196631.7 C (89.1 F)
196733.3 C (91.9 F)
196832.8 C (91.0 F)
196932.8 C (91.0 F)
197033.9 C (93.0 F)
197133.9 C (93.0 F)
197231.1 C (88.0 F)
197334.4 C (93.9 F)
197433.9 C (93.0 F)
197531.7 C (89.1 F)
197631.1 C (88.0 F)
197733.9 C (93.0 F)
197834.4 C (93.9 F)
197932.2 C (90.0 F)
198032.2 C (90.0 F)
198133.3 C (91.9 F)
198233.3 C (91.9 F)
198333.9 C (93.0 F)
198432.2 C (90.0 F)
198531.7 C (89.1 F)
198632.2 C (90.0 F)
198731.1 C (88.0 F)
198832.8 C (91.0 F)

Coldest night (TNn)

Coldest night (TNn) at Aquiles Serdan 46 by year The coldest night of the year at Aquiles Serdan 46, 1933 to 1988. The record is -6.1 C (21.0 F) in 1956, marked on the chart; the median year is 0.0 C (32.0 F). -7.5-5-2.502.5519401950196019701980Record: -6.1 C (21.0 F) in 1956
The coldest night of the year at Aquiles Serdan 46, 1933 to 1988. The record is -6.1 C (21.0 F) in 1956, marked on the chart; the median year is 0.0 C (32.0 F).
Coldest night (TNn) at Aquiles Serdan 46 by year
YearColdest night (TNn)
1933n/a
1934n/a
1935n/a
1936n/a
1937n/a
1938n/a
1939n/a
1940n/a
1941n/a
1942n/a
1943n/a
1944n/a
1945n/a
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
1951n/a
1952n/a
1955-2.8 C (27.0 F)
1956-6.1 C (21.0 F)
1957-2.8 C (27.0 F)
1958-1.1 C (30.0 F)
1959-1.1 C (30.0 F)
1960-4.4 C (24.1 F)
1961-1.7 C (28.9 F)
1962-0.6 C (30.9 F)
1963-1.7 C (28.9 F)
19640.0 C (32.0 F)
1965-1.1 C (30.0 F)
1966-2.2 C (28.0 F)
19670.0 C (32.0 F)
19680.0 C (32.0 F)
1969-1.1 C (30.0 F)
19700.6 C (33.1 F)
19711.7 C (35.1 F)
19721.1 C (34.0 F)
19730.0 C (32.0 F)
19740.0 C (32.0 F)
19750.0 C (32.0 F)
1976-0.6 C (30.9 F)
19772.8 C (37.0 F)
19781.7 C (35.1 F)
19792.2 C (36.0 F)
19801.7 C (35.1 F)
19811.1 C (34.0 F)
19822.8 C (37.0 F)
19831.7 C (35.1 F)
19842.2 C (36.0 F)
19852.2 C (36.0 F)
1986-1.1 C (30.0 F)
19870.6 C (33.1 F)
19880.0 C (32.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Aquiles Serdan 46 by year The wettest day of the year at Aquiles Serdan 46, 1933 to 1988. The record is 70.4 mm (2.8 in) in 1960, marked on the chart; the median year is 40.0 mm (1.6 in). 02040608019401950196019701980Record: 70.4 mm (2.8 in) in 1960
The wettest day of the year at Aquiles Serdan 46, 1933 to 1988. The record is 70.4 mm (2.8 in) in 1960, marked on the chart; the median year is 40.0 mm (1.6 in).
Wettest day (Rx1day) at Aquiles Serdan 46 by year
YearWettest day (Rx1day)
193358.4 mm (2.3 in)
193419.8 mm (0.8 in)
193545.0 mm (1.8 in)
193626.9 mm (1.1 in)
193722.9 mm (0.9 in)
193817.8 mm (0.7 in)
193930.0 mm (1.2 in)
194017.8 mm (0.7 in)
194121.8 mm (0.9 in)
194217.8 mm (0.7 in)
194319.8 mm (0.8 in)
194418.8 mm (0.7 in)
194518.3 mm (0.7 in)
19469.9 mm (0.39 in)
194715.0 mm (0.6 in)
194816.3 mm (0.6 in)
194911.9 mm (0.5 in)
195014.0 mm (0.6 in)
195114.0 mm (0.6 in)
195211.9 mm (0.5 in)
195527.7 mm (1.1 in)
195655.9 mm (2.2 in)
195734.5 mm (1.4 in)
195839.4 mm (1.6 in)
195949.3 mm (1.9 in)
196070.4 mm (2.8 in)
196144.2 mm (1.7 in)
196249.5 mm (1.9 in)
196347.8 mm (1.9 in)
196428.4 mm (1.1 in)
196536.6 mm (1.4 in)
196644.2 mm (1.7 in)
196747.8 mm (1.9 in)
196842.2 mm (1.7 in)
196959.4 mm (2.3 in)
197026.2 mm (1.0 in)
197141.1 mm (1.6 in)
197240.6 mm (1.6 in)
197367.3 mm (2.6 in)
197438.6 mm (1.5 in)
197542.2 mm (1.7 in)
197644.2 mm (1.7 in)
197748.0 mm (1.9 in)
197851.6 mm (2.0 in)
197961.0 mm (2.4 in)
198061.7 mm (2.4 in)
198151.1 mm (2.0 in)
198248.3 mm (1.9 in)
198327.7 mm (1.1 in)
198446.2 mm (1.8 in)
198541.1 mm (1.6 in)
198657.7 mm (2.3 in)
198760.5 mm (2.4 in)
198836.6 mm (1.4 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Aquiles Serdan 46 by year The wettest five days of the year at Aquiles Serdan 46, 1933 to 1988. The record is 128.3 mm (5.1 in) in 1956, marked on the chart; the median year is 75.9 mm (3.0 in). 05010015019401950196019701980Record: 128.3 mm (5.1 in) in 1956
The wettest five days of the year at Aquiles Serdan 46, 1933 to 1988. The record is 128.3 mm (5.1 in) in 1956, marked on the chart; the median year is 75.9 mm (3.0 in).
Wettest five days (Rx5day) at Aquiles Serdan 46 by year
YearWettest five days (Rx5day)
193376.0 mm (3.0 in)
193456.2 mm (2.2 in)
193563.0 mm (2.5 in)
193648.8 mm (1.9 in)
193764.2 mm (2.5 in)
193843.2 mm (1.7 in)
193955.7 mm (2.2 in)
194050.3 mm (2.0 in)
194150.3 mm (2.0 in)
194243.0 mm (1.7 in)
194339.1 mm (1.5 in)
194460.7 mm (2.4 in)
194537.9 mm (1.5 in)
194627.7 mm (1.1 in)
194737.4 mm (1.5 in)
194840.6 mm (1.6 in)
194930.8 mm (1.2 in)
195035.8 mm (1.4 in)
195139.8 mm (1.6 in)
195241.9 mm (1.6 in)
195557.2 mm (2.3 in)
1956128.3 mm (5.1 in)
195752.8 mm (2.1 in)
195878.0 mm (3.1 in)
195997.9 mm (3.9 in)
196084.9 mm (3.3 in)
1961110.0 mm (4.3 in)
196283.5 mm (3.3 in)
196381.3 mm (3.2 in)
196462.9 mm (2.5 in)
196592.0 mm (3.6 in)
1966104.4 mm (4.1 in)
1967104.2 mm (4.1 in)
1968125.2 mm (4.9 in)
1969124.9 mm (4.9 in)
197060.2 mm (2.4 in)
197190.7 mm (3.6 in)
197285.6 mm (3.4 in)
1973124.5 mm (4.9 in)
197492.6 mm (3.6 in)
197575.7 mm (3.0 in)
1976116.4 mm (4.6 in)
197769.1 mm (2.7 in)
197878.4 mm (3.1 in)
1979117.6 mm (4.6 in)
1980124.3 mm (4.9 in)
198168.4 mm (2.7 in)
198281.0 mm (3.2 in)
198380.5 mm (3.2 in)
1984106.9 mm (4.2 in)
198591.6 mm (3.6 in)
1986122.0 mm (4.8 in)
198784.4 mm (3.3 in)
198856.6 mm (2.2 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Aquiles Serdan 46 by year The longest dry spell of the year at Aquiles Serdan 46, 1933 to 1988. The record is 129 days in 1988, marked on the chart; the median year is 55 days. 05010015019401950196019701980Record: 129 days in 1988
The longest dry spell of the year at Aquiles Serdan 46, 1933 to 1988. The record is 129 days in 1988, marked on the chart; the median year is 55 days.
Longest dry spell (CDD) at Aquiles Serdan 46 by year
YearLongest dry spell (CDD)
193341 days
193442 days
193573 days
193643 days
193740 days
193845 days
193969 days
194039 days
194150 days
194247 days
194365 days
194449 days
194541 days
194654 days
194778 days
194843 days
194963 days
195099 days
195170 days
195247 days
195519 days
1956110 days
195752 days
195886 days
195996 days
196065 days
196149 days
196254 days
196377 days
196433 days
196551 days
196658 days
196764 days
196845 days
196962 days
197057 days
197143 days
197285 days
197357 days
197464 days
197565 days
197640 days
197749 days
197843 days
197975 days
198058 days
198138 days
198260 days
198355 days
198435 days
198556 days
1986105 days
198749 days
1988129 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

51 years, 1933 to 1988

A day with at least 37.1 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 74.4 mm (2.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Aquiles Serdan 46: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years37.1 mm (1.5 in)
5 years51.7 mm (2.0 in)
10 years59.1 mm (2.3 in)
25 years66.5 mm (2.6 in)
50 years70.9 mm (2.8 in)
100 years74.4 mm (2.9 in)Longer than the 51 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, 51 years of values from 1933 to 1988.

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: 70.4 mm (2.8 in) in 1960; 67.3 mm (2.6 in) in 1973; 61.7 mm (2.4 in) in 1980.

Download the Data

  • Data for Aquiles Serdan 46 standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Aquiles Serdan 46 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).