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Milpa Alta Weather Records (MXN00009032)

Record envelope, standing records and threshold days for Milpa Alta (MXN00009032), Mexico, with 84 years of record.

Key Facts for Milpa Alta

  • Milpa Alta (MXN00009032) is a weather station in Mexico at 19.18 latitude and -99.02 longitude, 2,420 m (7,939 ft) above sea level.
  • The station reports from 1929 to 2012, 84 years of record.
  • 1,464 records set at Milpa Alta still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Milpa Alta set a daily record high minimum temperature of 10.0 C (50.0 F) on 11 December 2012.

About the Station

  • Location: Mexico, 19.18 latitude, -99.02 longitude.
  • Elevation: 2,420 m (7,939 ft).
  • Period of record: 1929 to 2012, 84 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 Milpa Alta, with 2026 drawn through them The band shows the record high and record low for each calendar day at Milpa Alta. 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 Milpa Alta. 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 Milpa Alta, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan26.7 C (80.1 F)-4.4 C (24.1 F)n/an/a
Feb28.3 C (82.9 F)-2.2 C (28.0 F)n/an/a
Mar30.0 C (86.0 F)0.0 C (32.0 F)n/an/a
Apr37.8 C (100.0 F)1.1 C (34.0 F)n/an/a
May33.3 C (91.9 F)3.9 C (39.0 F)n/an/a
Jun30.6 C (87.1 F)3.9 C (39.0 F)n/an/a
Jul27.8 C (82.0 F)5.0 C (41.0 F)n/an/a
Aug26.7 C (80.1 F)4.4 C (39.9 F)n/an/a
Sep26.7 C (80.1 F)2.2 C (36.0 F)n/an/a
Oct26.7 C (80.1 F)-1.1 C (30.0 F)n/an/a
Nov28.3 C (82.9 F)-2.2 C (28.0 F)n/an/a
Dec25.0 C (77.0 F)-2.8 C (27.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Milpa Alta by the year they were set 1,464 records at Milpa Alta still stand. 1944 holds the most, with 91. 02550751001929: 51930: 291931: 521932: 151941: 101942: 651943: 811944: 911945: 811963: 191964: 351965: 171966: 381967: 71968: 141969: 411970: 201971: 221972: 381973: 561974: 171975: 161976: 171977: 381978: 271979: 371980: 311981: 211982: 371983: 541984: 121985: 81986: 261987: 431988: 191989: 221990: 291992: 21993: 101994: 271995: 161996: 251997: 331998: 212002: 132003: 112004: 122005: 292006: 162007: 122008: 132011: 222012: 12192919431966197219781984199019972006
1,464 records at Milpa Alta still stand. 1944 holds the most, with 91.
Standing records at Milpa Alta by the year they were set
Year setStanding records
19295
193029
193152
193215
194110
194265
194381
194491
194581
196319
196435
196517
196638
19677
196814
196941
197020
197122
197238
197356
197417
197516
197617
197738
197827
197937
198031
198121
198237
198354
198412
19858
198626
198743
198819
198922
199029
19922
199310
199427
199516
199625
199733
199821
200213
200311
200412
200529
200616
200712
200813
201122
201212

All-Time Record Progression

4 new records
When Milpa Alta set new all-time records 4 all-time records were set at Milpa Alta between 21 June 1989 and 15 April 2011. Each dot is a new record. Record daily precipitationRecord high maximum temperatureRecord high minimum temperature21 June 1989: Record daily precipitation 93.0 mm (3.7 in)5 April 2005: Record high maximum temperature 33.9 C (93.0 F)13 April 2011: Record high maximum temperature 37.8 C (100.0 F)15 April 2011: Record high minimum temperature 20.0 C (68.0 F)19901995200020052010
4 all-time records were set at Milpa Alta between 21 June 1989 and 15 April 2011. Each dot is a new record.
When Milpa Alta set new all-time records
DateKindDetail
1989-06-21Record daily precipitationRecord daily precipitation 93.0 mm (3.7 in)
2005-04-05Record high maximum temperatureRecord high maximum temperature 33.9 C (93.0 F)
2011-04-13Record high maximum temperatureRecord high maximum temperature 37.8 C (100.0 F)
2011-04-15Record high minimum temperatureRecord high minimum temperature 20.0 C (68.0 F)

Wettest Day of Each Month

Jun: 93.0 mm (3.7 in)
Record daily precipitation for each month at Milpa Alta The wettest day on record for each calendar month at Milpa Alta. The most was 93.0 mm (3.7 in) on 21 June 1989. 0255075100 Jan: 63.8 mm (2.5 in), 10 January 1967 Jan Feb: 23.4 mm (0.9 in), 21 February 1965 Feb Mar: 34.8 mm (1.4 in), 10 March 1944 Mar Apr: 40.9 mm (1.6 in), 1 April 2007 Apr May: 85.3 mm (3.4 in), 25 May 1964 May Jun: 93.0 mm (3.7 in), 21 June 1989 Jun Jul: 55.6 mm (2.2 in), 12 July 1969 Jul Aug: 69.1 mm (2.7 in), 14 August 1998 Aug Sep: 68.3 mm (2.7 in), 25 September 2003 Sep Oct: 51.3 mm (2.0 in), 10 October 1976 Oct Nov: 25.4 mm (1.0 in), 5 November 2012 Nov Dec: 42.4 mm (1.7 in), 30 December 1995 Dec
The wettest day on record for each calendar month at Milpa Alta. The most was 93.0 mm (3.7 in) on 21 June 1989.
Record daily precipitation for each month at Milpa Alta
MonthRecord daily precipitation (mm)Date
Jan63.8 mm (2.5 in)10 January 1967
Feb23.4 mm (0.9 in)21 February 1965
Mar34.8 mm (1.4 in)10 March 1944
Apr40.9 mm (1.6 in)1 April 2007
May85.3 mm (3.4 in)25 May 1964
Jun93.0 mm (3.7 in)21 June 1989
Jul55.6 mm (2.2 in)12 July 1969
Aug69.1 mm (2.7 in)14 August 1998
Sep68.3 mm (2.7 in)25 September 2003
Oct51.3 mm (2.0 in)10 October 1976
Nov25.4 mm (1.0 in)5 November 2012
Dec42.4 mm (1.7 in)30 December 1995

Period of Record Coverage

1929 to 2012
Days with data per year at Milpa Alta 53 years of record at Milpa Alta, 1929 to 2012. 13 years have data for under 90 percent of days and are left out of rankings: 1929, 1930, 1932, 1941, 1945, 1963, 1988, 1992 and others. 1929: 84 of 365 days1930: 214 of 365 days1931: 365 of 365 days1932: 121 of 366 days1941: 153 of 365 days1942: 363 of 365 days1943: 363 of 365 days1944: 333 of 366 days1945: 271 of 365 days1963: 275 of 365 days1964: 366 of 366 days1965: 335 of 365 days1966: 365 of 365 days1967: 365 of 365 days1968: 366 of 366 days1969: 335 of 365 days1970: 365 of 365 days1971: 365 of 365 days1972: 366 of 366 days1973: 365 of 365 days1974: 365 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 365 of 365 days1978: 364 of 365 days1979: 365 of 365 days1980: 366 of 366 days1981: 364 of 365 days1982: 365 of 365 days1983: 365 of 365 days1984: 366 of 366 days1985: 365 of 365 days1986: 334 of 365 days1987: 364 of 365 days1988: 213 of 366 days1989: 365 of 365 days1990: 365 of 365 days1992: 101 of 366 days1993: 243 of 365 days1994: 365 of 365 days1995: 365 of 365 days1996: 272 of 366 days1997: 363 of 365 days1998: 363 of 365 days2002: 365 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 295 of 365 days2007: 365 of 365 days2008: 212 of 366 days2011: 300 of 365 days2012: 362 of 366 days1930197019801990
53 years of record at Milpa Alta, 1929 to 2012. 13 years have data for under 90 percent of days and are left out of rankings: 1929, 1930, 1932, 1941, 1945, 1963, 1988, 1992 and others.
Days with data per year at Milpa Alta
YearDays with dataShare of yearComplete
19298423%No
193021459%No
1931365100%Yes
193212133%No
194115342%No
194236399%Yes
194336399%Yes
194433391%Yes
194527174%No
196327575%No
1964366100%Yes
196533592%Yes
1966365100%Yes
1967365100%Yes
1968366100%Yes
196933592%Yes
1970365100%Yes
1971365100%Yes
1972366100%Yes
1973365100%Yes
1974365100%Yes
1975365100%Yes
1976366100%Yes
1977365100%Yes
1978364100%Yes
1979365100%Yes
1980366100%Yes
1981364100%Yes
1982365100%Yes
1983365100%Yes
1984366100%Yes
1985365100%Yes
198633492%Yes
1987364100%Yes
198821358%No
1989365100%Yes
1990365100%Yes
199210128%No
199324367%No
1994365100%Yes
1995365100%Yes
199627274%No
199736399%Yes
199836399%Yes
2002365100%Yes
2003365100%Yes
2004366100%Yes
2005365100%Yes
200629581%No
2007365100%Yes
200821258%No
201130082%No
201236299%Yes

Latest Records

20
Latest records at Milpa Alta
DateStationRecordValueBeat old record byOld record stoodSignificance
11 December 2012Milpa Alta, MXdaily high min10.0 C (50.0 F)0.6 C (1.1 F)35 years20 of 100 (Routine)
25 November 2012Milpa Alta, MXdaily low min (Tie)2.8 C (37.0 F)tie69 years7 of 100 (Routine)
5 November 2012Milpa Alta, MXmonthly rain25.4 mm (1.0 in)2.5 mm (0.10 in)69 years42 of 100 (Notable)
5 October 2012Milpa Alta, MXdaily low min (Tie)5.0 C (41.0 F)tie69 years7 of 100 (Routine)
7 September 2012Milpa Alta, MXdaily high max (Tie)23.9 C (75.0 F)tie26 years3 of 100 (Routine)
18 August 2012Milpa Alta, MXdaily low max (Tie)16.7 C (62.1 F)tie68 years7 of 100 (Routine)
17 August 2012Milpa Alta, MXdaily low max (Tie)16.7 C (62.1 F)tie68 years7 of 100 (Routine)
16 August 2012Milpa Alta, MXdaily rain22.4 mm (0.9 in)1.6 mm (0.06 in)18 years14 of 100 (Routine)
13 August 2012Milpa Alta, MXdaily rain23.4 mm (0.9 in)7.1 mm (0.28 in)43 years20 of 100 (Routine)
10 August 2012Milpa Alta, MXdaily low max15.6 C (60.1 F)1.1 C (2.0 F)67 years33 of 100 (Routine)
15 July 2012Milpa Alta, MXdaily low max (Tie)16.7 C (62.1 F)tie68 years7 of 100 (Routine)
14 July 2012Milpa Alta, MXdaily rain28.4 mm (1.1 in)11.1 mm (0.4 in)55 years38 of 100 (Notable)
14 July 2012Milpa Alta, MXdaily low max (Tie)15.6 C (60.1 F)tie68 years7 of 100 (Routine)
13 July 2012Milpa Alta, MXdaily low max (Tie)17.8 C (64.0 F)tie68 years7 of 100 (Routine)
30 June 2012Milpa Alta, MXdaily high max26.7 C (80.1 F)2.3 C (4.1 F)24 years23 of 100 (Routine)
20 June 2012Milpa Alta, MXdaily low max16.1 C (61.0 F)0.6 C (1.1 F)35 years20 of 100 (Routine)
19 June 2012Milpa Alta, MXdaily low max (Tie)16.7 C (62.1 F)tie68 years7 of 100 (Routine)
16 June 2012Milpa Alta, MXdaily low max15.0 C (59.0 F)1.7 C (3.1 F)68 years34 of 100 (Routine)
16 June 2012Milpa Alta, MXdaily rain33.8 mm (1.3 in)6.9 mm (0.27 in)27 years24 of 100 (Routine)
13 June 2012Milpa Alta, MXdaily low min (Tie)7.8 C (46.0 F)tie16 years3 of 100 (Routine)

Climate Trend

36 complete years, 1931 to 2012
Annual mean temperature at Milpa Alta as warming stripes, 1931 to 2012 One stripe for each of 36 complete years at Milpa Alta, 1931 to 2012. Blue stripes are years cooler than the station's own mean of 15.2 C (59.4 F); red stripes are warmer. The coolest year was 1943, at 12.9 C (55.2 F), and the warmest was 1987, at 16.4 C (61.6 F). The strongest colour marks a difference of 2.4 C (4.3 F). 1931: 16.1 C, +0.8 C from the station mean1942: 13.4 C, -1.8 C from the station mean1943: 12.9 C, -2.3 C from the station mean1964: 15.7 C, +0.4 C from the station mean1966: 15.1 C, -0.1 C from the station mean1967: 15.1 C, -0.2 C from the station mean1968: 15.0 C, -0.2 C from the station mean1970: 15.7 C, +0.5 C from the station mean1971: 15.6 C, +0.4 C from the station mean1972: 15.8 C, +0.6 C from the station mean1973: 16.1 C, +0.9 C from the station mean1974: 15.6 C, +0.4 C from the station mean1975: 15.7 C, +0.5 C from the station mean1976: 15.3 C, +0.1 C from the station mean1977: 15.9 C, +0.7 C from the station mean1978: 15.9 C, +0.7 C from the station mean1979: 16.0 C, +0.8 C from the station mean1980: 16.2 C, +0.9 C from the station mean1981: 15.7 C, +0.5 C from the station mean1982: 16.4 C, +1.1 C from the station mean1983: 16.2 C, +1.0 C from the station mean1984: 15.7 C, +0.5 C from the station mean1985: 15.7 C, +0.5 C from the station mean1987: 16.4 C, +1.2 C from the station mean1989: 15.6 C, +0.3 C from the station mean1990: 15.6 C, +0.4 C from the station mean1994: 14.1 C, -1.1 C from the station mean1995: 14.3 C, -0.9 C from the station mean1997: 14.0 C, -1.2 C from the station mean1998: 14.7 C, -0.5 C from the station mean2002: 14.2 C, -1.1 C from the station mean2003: 14.3 C, -0.9 C from the station mean2004: 13.9 C, -1.3 C from the station mean2005: 14.9 C, -0.3 C from the station mean2007: 14.1 C, -1.1 C from the station mean2012: 14.4 C, -0.8 C from the station mean193119401950196019701980199020002010
One stripe for each of 36 complete years at Milpa Alta, 1931 to 2012. Blue stripes are years cooler than the station's own mean of 15.2 C (59.4 F); red stripes are warmer. The coolest year was 1943, at 12.9 C (55.2 F), and the warmest was 1987, at 16.4 C (61.6 F). The strongest colour marks a difference of 2.4 C (4.3 F).
Annual mean temperature at Milpa Alta as warming stripes, 1931 to 2012
YearAnnual mean temperatureDifference from the station mean
193116.1 C+0.85 C
194213.4 C-1.79 C
194312.9 C-2.33 C
196415.7 C+0.45 C
196615.1 C-0.11 C
196715.1 C-0.15 C
196815.0 C-0.23 C
197015.7 C+0.52 C
197115.6 C+0.41 C
197215.8 C+0.63 C
197316.1 C+0.92 C
197415.6 C+0.43 C
197515.7 C+0.53 C
197615.3 C+0.13 C
197715.9 C+0.68 C
197815.9 C+0.74 C
197916.0 C+0.78 C
198016.2 C+0.95 C
198115.7 C+0.53 C
198216.4 C+1.15 C
198316.2 C+1.04 C
198415.7 C+0.48 C
198515.7 C+0.53 C
198716.4 C+1.24 C
198915.6 C+0.35 C
199015.6 C+0.42 C
199414.1 C-1.07 C
199514.3 C-0.89 C
199714.0 C-1.24 C
199814.7 C-0.50 C
200214.2 C-1.05 C
200314.3 C-0.86 C
200413.9 C-1.29 C
200514.9 C-0.33 C
200714.1 C-1.08 C
201214.4 C-0.81 C

The fitted trend in annual mean temperature here over 1931 to 2012 is -0.1 C (-0.2 to 0.1) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.4 to 0.2) per decade. The slope is a straight line fitted to 36 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Milpa Alta
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature-0.1 C (-0.2 to 0.1) per decade-0.1 F (-0.4 to 0.2) per decade1931 to 201236Not clearly different from zero
Mean daily maximum-0.02 C (-0.21 to 0.17) per decade-0.04 F (-0.37 to 0.30) per decade1931 to 201236Not clearly different from zero
Mean daily minimum-0.13 C (-0.30 to 0.04) per decade-0.2 F (-0.5 to 0.1) per decade1931 to 201236Not 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

1929 to 2012
Yearly extremes at Milpa Alta: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)37.8 C (100.0 F)201128.9 C (84.0 F)53
Coldest night (TNn)-4.4 C (24.1 F)19440.0 C (32.0 F)53
Wettest day (Rx1day)93.0 mm (3.7 in)198939.9 mm (1.6 in)61
Wettest five days (Rx5day)175.0 mm (6.9 in)195575.2 mm (3.0 in)61
Longest dry spell (CDD)103 days198657 days61

Hottest day (TXx)

Hottest day (TXx) at Milpa Alta by year The hottest day of the year at Milpa Alta, 1929 to 2012. The record is 37.8 C (100.0 F) in 2011, marked on the chart; the median year is 28.9 C (84.0 F). 20253035401940196019802000Record: 37.8 C (100.0 F) in 2011
The hottest day of the year at Milpa Alta, 1929 to 2012. The record is 37.8 C (100.0 F) in 2011, marked on the chart; the median year is 28.9 C (84.0 F).
Hottest day (TXx) at Milpa Alta by year
YearHottest day (TXx)
192925.0 C (77.0 F)
193025.6 C (78.1 F)
193130.0 C (86.0 F)
193230.0 C (86.0 F)
194121.7 C (71.1 F)
194226.7 C (80.1 F)
194326.7 C (80.1 F)
194425.0 C (77.0 F)
194528.9 C (84.0 F)
1955n/a
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a
1962n/a
196328.3 C (82.9 F)
196429.4 C (84.9 F)
196527.8 C (82.0 F)
196628.9 C (84.0 F)
196728.9 C (84.0 F)
196826.7 C (80.1 F)
196928.9 C (84.0 F)
197030.0 C (86.0 F)
197130.0 C (86.0 F)
197228.3 C (82.9 F)
197330.0 C (86.0 F)
197428.9 C (84.0 F)
197530.0 C (86.0 F)
197627.8 C (82.0 F)
197729.4 C (84.9 F)
197830.0 C (86.0 F)
197928.9 C (84.0 F)
198028.9 C (84.0 F)
198129.4 C (84.9 F)
198230.6 C (87.1 F)
198333.3 C (91.9 F)
198430.0 C (86.0 F)
198530.0 C (86.0 F)
198629.4 C (84.9 F)
198728.3 C (82.9 F)
198830.0 C (86.0 F)
198930.6 C (87.1 F)
199030.0 C (86.0 F)
199226.7 C (80.1 F)
199328.9 C (84.0 F)
199427.2 C (81.0 F)
199528.3 C (82.9 F)
199628.3 C (82.9 F)
199728.3 C (82.9 F)
199830.6 C (87.1 F)
200227.2 C (81.0 F)
200328.9 C (84.0 F)
200425.0 C (77.0 F)
200533.9 C (93.0 F)
200626.7 C (80.1 F)
200727.2 C (81.0 F)
200827.2 C (81.0 F)
201137.8 C (100.0 F)
201226.7 C (80.1 F)

Coldest night (TNn)

Coldest night (TNn) at Milpa Alta by year The coldest night of the year at Milpa Alta, 1929 to 2012. The record is -4.4 C (24.1 F) in 1944, marked on the chart; the median year is 0.0 C (32.0 F). -5-2.502.551940196019802000Record: -4.4 C (24.1 F) in 1944
The coldest night of the year at Milpa Alta, 1929 to 2012. The record is -4.4 C (24.1 F) in 1944, marked on the chart; the median year is 0.0 C (32.0 F).
Coldest night (TNn) at Milpa Alta by year
YearColdest night (TNn)
19290.0 C (32.0 F)
19303.9 C (39.0 F)
19311.7 C (35.1 F)
19323.9 C (39.0 F)
19413.9 C (39.0 F)
1942-0.6 C (30.9 F)
19430.0 C (32.0 F)
1944-4.4 C (24.1 F)
19450.0 C (32.0 F)
1955n/a
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a
1962n/a
19630.0 C (32.0 F)
19640.0 C (32.0 F)
1965-1.7 C (28.9 F)
1966-1.1 C (30.0 F)
19670.0 C (32.0 F)
1968-1.1 C (30.0 F)
19691.7 C (35.1 F)
19701.1 C (34.0 F)
19711.7 C (35.1 F)
1972-0.6 C (30.9 F)
19730.6 C (33.1 F)
19740.6 C (33.1 F)
19751.7 C (35.1 F)
19760.0 C (32.0 F)
19770.0 C (32.0 F)
19780.6 C (33.1 F)
19790.0 C (32.0 F)
19800.0 C (32.0 F)
19811.1 C (34.0 F)
19821.1 C (34.0 F)
19830.0 C (32.0 F)
19841.7 C (35.1 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)
1989-2.8 C (27.0 F)
19901.7 C (35.1 F)
19922.8 C (37.0 F)
1993-1.7 C (28.9 F)
1994-1.1 C (30.0 F)
19950.6 C (33.1 F)
1996-3.3 C (26.1 F)
1997-1.1 C (30.0 F)
1998-2.2 C (28.0 F)
2002-2.2 C (28.0 F)
20030.0 C (32.0 F)
20040.0 C (32.0 F)
2005-1.7 C (28.9 F)
2006-4.4 C (24.1 F)
20070.0 C (32.0 F)
2008-3.3 C (26.1 F)
20110.0 C (32.0 F)
20122.8 C (37.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Milpa Alta by year The wettest day of the year at Milpa Alta, 1929 to 2012. The record is 93.0 mm (3.7 in) in 1989, marked on the chart; the median year is 39.9 mm (1.6 in). 02550751001940196019802000Record: 93.0 mm (3.7 in) in 1989
The wettest day of the year at Milpa Alta, 1929 to 2012. The record is 93.0 mm (3.7 in) in 1989, marked on the chart; the median year is 39.9 mm (1.6 in).
Wettest day (Rx1day) at Milpa Alta by year
YearWettest day (Rx1day)
19299.9 mm (0.39 in)
193039.9 mm (1.6 in)
193139.9 mm (1.6 in)
19325.8 mm (0.23 in)
194137.1 mm (1.5 in)
194234.8 mm (1.4 in)
194339.9 mm (1.6 in)
194434.8 mm (1.4 in)
194534.8 mm (1.4 in)
195560.5 mm (2.4 in)
195639.4 mm (1.6 in)
195735.3 mm (1.4 in)
195844.5 mm (1.8 in)
195930.0 mm (1.2 in)
196043.4 mm (1.7 in)
196149.8 mm (2.0 in)
196234.3 mm (1.4 in)
196352.6 mm (2.1 in)
196485.3 mm (3.4 in)
196538.9 mm (1.5 in)
196638.1 mm (1.5 in)
196763.8 mm (2.5 in)
196834.8 mm (1.4 in)
196955.6 mm (2.2 in)
197061.0 mm (2.4 in)
197130.2 mm (1.2 in)
197240.6 mm (1.6 in)
197338.9 mm (1.5 in)
197429.5 mm (1.2 in)
197526.4 mm (1.0 in)
197651.3 mm (2.0 in)
197736.8 mm (1.4 in)
197832.8 mm (1.3 in)
197941.9 mm (1.6 in)
198039.9 mm (1.6 in)
198129.5 mm (1.2 in)
198226.9 mm (1.1 in)
198330.0 mm (1.2 in)
198449.8 mm (2.0 in)
198537.3 mm (1.5 in)
198632.8 mm (1.3 in)
198728.2 mm (1.1 in)
198840.4 mm (1.6 in)
198993.0 mm (3.7 in)
199043.4 mm (1.7 in)
199259.9 mm (2.4 in)
199321.3 mm (0.8 in)
199443.4 mm (1.7 in)
199547.2 mm (1.9 in)
199636.1 mm (1.4 in)
199742.9 mm (1.7 in)
199869.1 mm (2.7 in)
200241.4 mm (1.6 in)
200368.3 mm (2.7 in)
200437.1 mm (1.5 in)
200547.0 mm (1.9 in)
200653.6 mm (2.1 in)
200752.3 mm (2.1 in)
200825.9 mm (1.0 in)
201165.3 mm (2.6 in)
201233.8 mm (1.3 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Milpa Alta by year The wettest five days of the year at Milpa Alta, 1929 to 2012. The record is 175.0 mm (6.9 in) in 1955, marked on the chart; the median year is 75.2 mm (3.0 in). 0501001502001940196019802000Record: 175.0 mm (6.9 in) in 1955
The wettest five days of the year at Milpa Alta, 1929 to 2012. The record is 175.0 mm (6.9 in) in 1955, marked on the chart; the median year is 75.2 mm (3.0 in).
Wettest five days (Rx5day) at Milpa Alta by year
YearWettest five days (Rx5day)
192914.7 mm (0.6 in)
193079.3 mm (3.1 in)
1931111.6 mm (4.4 in)
19329.6 mm (0.38 in)
194149.6 mm (2.0 in)
194276.0 mm (3.0 in)
194391.2 mm (3.6 in)
194469.6 mm (2.7 in)
194569.6 mm (2.7 in)
1955175.0 mm (6.9 in)
195662.1 mm (2.4 in)
195765.0 mm (2.6 in)
1958110.8 mm (4.4 in)
195957.5 mm (2.3 in)
196085.3 mm (3.4 in)
196185.3 mm (3.4 in)
196259.7 mm (2.4 in)
196385.2 mm (3.4 in)
1964169.9 mm (6.7 in)
196569.9 mm (2.8 in)
196669.9 mm (2.8 in)
196796.6 mm (3.8 in)
196879.3 mm (3.1 in)
196969.7 mm (2.7 in)
1970118.2 mm (4.7 in)
197161.0 mm (2.4 in)
197281.9 mm (3.2 in)
197351.9 mm (2.0 in)
197480.9 mm (3.2 in)
197556.8 mm (2.2 in)
1976123.9 mm (4.9 in)
197758.7 mm (2.3 in)
197875.2 mm (3.0 in)
197984.0 mm (3.3 in)
198072.0 mm (2.8 in)
198160.5 mm (2.4 in)
198254.4 mm (2.1 in)
198369.3 mm (2.7 in)
198498.0 mm (3.9 in)
198564.9 mm (2.6 in)
198651.6 mm (2.0 in)
198752.1 mm (2.1 in)
198894.0 mm (3.7 in)
1989105.8 mm (4.2 in)
199084.0 mm (3.3 in)
1992114.3 mm (4.5 in)
199363.2 mm (2.5 in)
199459.3 mm (2.3 in)
1995114.8 mm (4.5 in)
199650.6 mm (2.0 in)
199769.3 mm (2.7 in)
199877.2 mm (3.0 in)
200272.9 mm (2.9 in)
200387.4 mm (3.4 in)
200465.1 mm (2.6 in)
200587.5 mm (3.4 in)
2006101.6 mm (4.0 in)
2007126.1 mm (5.0 in)
200864.6 mm (2.5 in)
2011119.2 mm (4.7 in)
201278.9 mm (3.1 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Milpa Alta by year The longest dry spell of the year at Milpa Alta, 1929 to 2012. The record is 103 days in 1986, marked on the chart; the median year is 57 days. 204060801001201940196019802000Record: 103 days in 1986
The longest dry spell of the year at Milpa Alta, 1929 to 2012. The record is 103 days in 1986, marked on the chart; the median year is 57 days.
Longest dry spell (CDD) at Milpa Alta by year
YearLongest dry spell (CDD)
192963 days
193074 days
193152 days
193254 days
194126 days
194284 days
194347 days
194482 days
194578 days
195557 days
195673 days
195746 days
195848 days
195993 days
196066 days
196193 days
196288 days
196379 days
196485 days
196538 days
196648 days
196756 days
196831 days
196940 days
197063 days
197176 days
197234 days
197357 days
197440 days
197575 days
197644 days
197763 days
197843 days
197973 days
198056 days
198127 days
198282 days
198369 days
198446 days
198555 days
1986103 days
198739 days
198843 days
198964 days
199065 days
199231 days
199359 days
199468 days
199543 days
199695 days
199736 days
199852 days
200258 days
200388 days
200459 days
200552 days
200654 days
200741 days
2008102 days
201149 days
201256 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, 1931 to 2012

A day with at least 40.2 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 100.5 mm (4.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Milpa Alta: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years40.2 mm (1.6 in)
5 years52.1 mm (2.1 in)
10 years61.5 mm (2.4 in)
25 years75.3 mm (3.0 in)
50 years87.1 mm (3.4 in)
100 years100.5 mm (4.0 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 1931 to 2012.

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: 93.0 mm (3.7 in) in 1989; 85.3 mm (3.4 in) in 1964; 69.1 mm (2.7 in) in 1998.

Download the Data

  • Data for Milpa Alta standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Milpa Alta 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

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