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Tacotan Weather Records (MXN00014139)

Record envelope, standing records and threshold days for Tacotan (MXN00014139), Mexico, with 53 years of record.

Key Facts for Tacotan

  • Tacotan (MXN00014139) is a weather station in Mexico at 20.02 latitude and -104.28 longitude, 1,330 m (4,363 ft) above sea level.
  • The station reports from 1947 to 1999, 53 years of record.
  • 1,464 records set at Tacotan still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Tacotan set a daily record high maximum temperature of 32.2 C (90.0 F) on 9 February 1999.

About the Station

  • Location: Mexico, 20.02 latitude, -104.28 longitude.
  • Elevation: 1,330 m (4,363 ft).
  • Period of record: 1947 to 1999, 53 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 Tacotan, with 2026 drawn through them The band shows the record high and record low for each calendar day at Tacotan. 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 Tacotan. 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 Tacotan, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan31.7 C (89.1 F)-2.2 C (28.0 F)n/an/a
Feb35.0 C (95.0 F)-3.3 C (26.1 F)n/an/a
Mar39.4 C (102.9 F)0.6 C (33.1 F)n/an/a
Apr40.0 C (104.0 F)1.1 C (34.0 F)n/an/a
May39.4 C (102.9 F)0.0 C (32.0 F)n/an/a
Jun37.8 C (100.0 F)10.0 C (50.0 F)n/an/a
Jul35.6 C (96.1 F)10.6 C (51.1 F)n/an/a
Aug31.7 C (89.1 F)12.2 C (54.0 F)n/an/a
Sep31.7 C (89.1 F)8.3 C (46.9 F)n/an/a
Oct32.8 C (91.0 F)1.7 C (35.1 F)n/an/a
Nov32.8 C (91.0 F)0.6 C (33.1 F)n/an/a
Dec33.3 C (91.9 F)0.0 C (32.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Tacotan by the year they were set 1,464 records at Tacotan still stand. 1951 holds the most, with 73. 0204060801947: 441948: 371949: 391950: 551951: 731952: 471953: 591954: 241955: 311956: 371957: 641958: 421959: 531960: 421961: 361962: 251963: 331964: 191965: 231966: 301967: 201968: 221969: 351970: 231971: 171972: 341973: 241974: 181975: 111976: 171977: 231978: 121979: 231980: 291981: 171982: 131983: 321984: 81985: 131986: 211987: 131988: 261989: 101991: 281992: 331993: 231994: 161995: 91996: 131997: 381998: 291999: 1194719531959196519711977198319891996
1,464 records at Tacotan still stand. 1951 holds the most, with 73.
Standing records at Tacotan by the year they were set
Year setStanding records
194744
194837
194939
195055
195173
195247
195359
195424
195531
195637
195764
195842
195953
196042
196136
196225
196333
196419
196523
196630
196720
196822
196935
197023
197117
197234
197324
197418
197511
197617
197723
197812
197923
198029
198117
198213
198332
19848
198513
198621
198713
198826
198910
199128
199233
199323
199416
19959
199613
199738
199829
19991

All-Time Record Progression

2 new records
When Tacotan set new all-time records 2 all-time records were set at Tacotan between 18 January 1981 and 2 April 1991. Each dot is a new record. Record low maximum temperatureRecord high maximum temperature18 January 1981: Record low maximum temperature 11.1 C (52.0 F)2 April 1991: Record high maximum temperature 40.0 C (104.0 F)19851990
2 all-time records were set at Tacotan between 18 January 1981 and 2 April 1991. Each dot is a new record.
When Tacotan set new all-time records
DateKindDetail
1981-01-18Record low maximum temperatureRecord low maximum temperature 11.1 C (52.0 F)
1991-04-02Record high maximum temperatureRecord high maximum temperature 40.0 C (104.0 F)

Wettest Day of Each Month

Aug: 105.9 mm (4.2 in)
Record daily precipitation for each month at Tacotan The wettest day on record for each calendar month at Tacotan. The most was 105.9 mm (4.2 in) on 31 August 1971. 050100150 Jan: 86.1 mm (3.4 in), 17 January 1992 Jan Feb: 43.2 mm (1.7 in), 25 February 1987 Feb Mar: 46.2 mm (1.8 in), 3 March 1968 Mar Apr: 55.9 mm (2.2 in), 17 April 1959 Apr May: 63.5 mm (2.5 in), 28 May 1995 May Jun: 86.9 mm (3.4 in), 25 June 1986 Jun Jul: 70.1 mm (2.8 in), 7 July 1951 Jul Aug: 105.9 mm (4.2 in), 31 August 1971 Aug Sep: 99.6 mm (3.9 in), 11 September 1968 Sep Oct: 83.3 mm (3.3 in), 15 October 1971 Oct Nov: 69.3 mm (2.7 in), 26 November 1982 Nov Dec: 79.8 mm (3.1 in), 12 December 1963 Dec
The wettest day on record for each calendar month at Tacotan. The most was 105.9 mm (4.2 in) on 31 August 1971.
Record daily precipitation for each month at Tacotan
MonthRecord daily precipitation (mm)Date
Jan86.1 mm (3.4 in)17 January 1992
Feb43.2 mm (1.7 in)25 February 1987
Mar46.2 mm (1.8 in)3 March 1968
Apr55.9 mm (2.2 in)17 April 1959
May63.5 mm (2.5 in)28 May 1995
Jun86.9 mm (3.4 in)25 June 1986
Jul70.1 mm (2.8 in)7 July 1951
Aug105.9 mm (4.2 in)31 August 1971
Sep99.6 mm (3.9 in)11 September 1968
Oct83.3 mm (3.3 in)15 October 1971
Nov69.3 mm (2.7 in)26 November 1982
Dec79.8 mm (3.1 in)12 December 1963

Period of Record Coverage

1947 to 1999
Days with data per year at Tacotan 52 years of record at Tacotan, 1947 to 1999. 7 years have data for under 90 percent of days and are left out of rankings: 1979, 1987, 1989, 1992, 1994, 1995, 1999. 1947: 339 of 365 days1948: 357 of 366 days1949: 359 of 365 days1950: 364 of 365 days1951: 363 of 365 days1952: 364 of 366 days1953: 332 of 365 days1954: 361 of 365 days1955: 365 of 365 days1956: 364 of 366 days1957: 360 of 365 days1958: 361 of 365 days1959: 357 of 365 days1960: 364 of 366 days1961: 365 of 365 days1962: 365 of 365 days1963: 365 of 365 days1964: 366 of 366 days1965: 365 of 365 days1966: 365 of 365 days1967: 365 of 365 days1968: 365 of 366 days1969: 344 of 365 days1970: 365 of 365 days1971: 365 of 365 days1972: 366 of 366 days1973: 365 of 365 days1974: 364 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 364 of 365 days1978: 365 of 365 days1979: 243 of 365 days1980: 365 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 364 of 365 days1984: 335 of 366 days1985: 334 of 365 days1986: 365 of 365 days1987: 322 of 365 days1988: 365 of 366 days1989: 198 of 365 days1991: 361 of 365 days1992: 325 of 366 days1993: 336 of 365 days1994: 312 of 365 days1995: 298 of 365 days1996: 347 of 366 days1997: 360 of 365 days1998: 363 of 365 days1999: 59 of 365 days1950196019701980
52 years of record at Tacotan, 1947 to 1999. 7 years have data for under 90 percent of days and are left out of rankings: 1979, 1987, 1989, 1992, 1994, 1995, 1999.
Days with data per year at Tacotan
YearDays with dataShare of yearComplete
194733993%Yes
194835798%Yes
194935998%Yes
1950364100%Yes
195136399%Yes
195236499%Yes
195333291%Yes
195436199%Yes
1955365100%Yes
195636499%Yes
195736099%Yes
195836199%Yes
195935798%Yes
196036499%Yes
1961365100%Yes
1962365100%Yes
1963365100%Yes
1964366100%Yes
1965365100%Yes
1966365100%Yes
1967365100%Yes
1968365100%Yes
196934494%Yes
1970365100%Yes
1971365100%Yes
1972366100%Yes
1973365100%Yes
1974364100%Yes
1975365100%Yes
1976366100%Yes
1977364100%Yes
1978365100%Yes
197924367%No
1980365100%Yes
1981365100%Yes
1982365100%Yes
1983364100%Yes
198433592%Yes
198533492%Yes
1986365100%Yes
198732288%No
1988365100%Yes
198919854%No
199136199%Yes
199232589%No
199333692%Yes
199431285%No
199529882%No
199634795%Yes
199736099%Yes
199836399%Yes
19995916%No

Latest Records

20
Latest records at Tacotan
DateStationRecordValueBeat old record byOld record stoodSignificance
9 February 1999Tacotan, MXdaily high max32.2 C (90.0 F)0.5 C (0.9 F)41 years19 of 100 (Routine)
2 February 1999Tacotan, MXdaily high max (Tie)30.0 C (86.0 F)tie41 years4 of 100 (Routine)
2 January 1999Tacotan, MXdaily low min (Tie)0.6 C (33.1 F)tie40 years4 of 100 (Routine)
20 December 1998Tacotan, MXdaily high max (Tie)30.0 C (86.0 F)tie40 years4 of 100 (Routine)
29 November 1998Tacotan, MXdaily rain1.3 mm (0.05 in)1.3 mm (0.05 in)51 years20 of 100 (Routine)
22 November 1998Tacotan, MXdaily high min (Tie)15.0 C (59.0 F)tie41 years4 of 100 (Routine)
12 November 1998Tacotan, MXdaily high min (Tie)15.0 C (59.0 F)tie49 years4 of 100 (Routine)
1 November 1998Tacotan, MXdaily high min15.6 C (60.1 F)0.6 C (1.1 F)40 years19 of 100 (Routine)
30 October 1998Tacotan, MXdaily high min17.2 C (63.0 F)1.1 C (2.0 F)20 years15 of 100 (Routine)
27 October 1998Tacotan, MXdaily high min (Tie)16.7 C (62.1 F)tie39 years4 of 100 (Routine)
20 October 1998Tacotan, MXdaily high min (Tie)16.7 C (62.1 F)tie39 years4 of 100 (Routine)
15 October 1998Tacotan, MXdaily high min (Tie)16.7 C (62.1 F)tie51 years5 of 100 (Routine)
12 October 1998Tacotan, MXdaily rain30.0 mm (1.2 in)12.7 mm (0.5 in)5 years17 of 100 (Routine)
6 October 1998Tacotan, MXmonthly high min (Tie)18.9 C (66.0 F)tie49 years7 of 100 (Routine)
25 September 1998Tacotan, MXdaily rain56.1 mm (2.2 in)28.9 mm (1.1 in)28 years39 of 100 (Notable)
20 September 1998Tacotan, MXdaily high min18.9 C (66.0 F)0.6 C (1.1 F)48 years23 of 100 (Routine)
19 September 1998Tacotan, MXdaily high min18.9 C (66.0 F)0.6 C (1.1 F)40 years21 of 100 (Routine)
18 September 1998Tacotan, MXdaily high min (Tie)17.8 C (64.0 F)tie45 years4 of 100 (Routine)
17 September 1998Tacotan, MXdaily rain29.0 mm (1.1 in)3.9 mm (0.15 in)3 years8 of 100 (Routine)
17 September 1998Tacotan, MXdaily high min (Tie)17.8 C (64.0 F)tie40 years4 of 100 (Routine)

Climate Trend

44 complete years, 1947 to 1998
Annual mean temperature at Tacotan as warming stripes, 1947 to 1998 One stripe for each of 44 complete years at Tacotan, 1947 to 1998. Blue stripes are years cooler than the station's own mean of 20.1 C (68.3 F); red stripes are warmer. The coolest year was 1997, at 19.4 C (66.9 F), and the warmest was 1957, at 20.9 C (69.5 F). The strongest colour marks a difference of 0.8 C (1.4 F). 1947: 20.0 C, -0.1 C from the station mean1948: 20.3 C, +0.2 C from the station mean1949: 19.6 C, -0.5 C from the station mean1950: 19.7 C, -0.4 C from the station mean1951: 19.7 C, -0.5 C from the station mean1952: 19.5 C, -0.6 C from the station mean1954: 20.7 C, +0.6 C from the station mean1955: 20.2 C, 0.0 C from the station mean1956: 20.2 C, 0.0 C from the station mean1957: 20.9 C, +0.7 C from the station mean1958: 20.5 C, +0.4 C from the station mean1959: 20.0 C, -0.1 C from the station mean1960: 20.3 C, +0.2 C from the station mean1961: 19.9 C, -0.3 C from the station mean1962: 20.5 C, +0.4 C from the station mean1963: 20.3 C, +0.2 C from the station mean1964: 20.3 C, +0.2 C from the station mean1965: 20.5 C, +0.3 C from the station mean1966: 20.1 C, -0.1 C from the station mean1967: 20.0 C, -0.1 C from the station mean1968: 19.9 C, -0.2 C from the station mean1969: 20.6 C, +0.5 C from the station mean1970: 20.3 C, +0.1 C from the station mean1971: 20.3 C, +0.1 C from the station mean1972: 20.8 C, +0.6 C from the station mean1973: 20.1 C, 0.0 C from the station mean1974: 20.4 C, +0.2 C from the station mean1975: 20.1 C, -0.1 C from the station mean1976: 20.2 C, 0.0 C from the station mean1977: 20.2 C, +0.1 C from the station mean1978: 20.2 C, +0.1 C from the station mean1980: 20.4 C, +0.3 C from the station mean1981: 19.6 C, -0.5 C from the station mean1982: 20.4 C, +0.3 C from the station mean1983: 19.8 C, -0.4 C from the station mean1986: 19.9 C, -0.2 C from the station mean1988: 20.2 C, 0.0 C from the station mean1991: 20.3 C, +0.2 C from the station mean1992: 19.7 C, -0.4 C from the station mean1993: 19.7 C, -0.4 C from the station mean1994: 20.7 C, +0.5 C from the station mean1996: 19.9 C, -0.3 C from the station mean1997: 19.4 C, -0.7 C from the station mean1998: 20.1 C, -0.1 C from the station mean19471950195519601965197019751980198519901995
One stripe for each of 44 complete years at Tacotan, 1947 to 1998. Blue stripes are years cooler than the station's own mean of 20.1 C (68.3 F); red stripes are warmer. The coolest year was 1997, at 19.4 C (66.9 F), and the warmest was 1957, at 20.9 C (69.5 F). The strongest colour marks a difference of 0.8 C (1.4 F).
Annual mean temperature at Tacotan as warming stripes, 1947 to 1998
YearAnnual mean temperatureDifference from the station mean
194720.0 C-0.12 C
194820.3 C+0.18 C
194919.6 C-0.52 C
195019.7 C-0.43 C
195119.7 C-0.47 C
195219.5 C-0.61 C
195420.7 C+0.55 C
195520.2 C+0.00 C
195620.2 C+0.05 C
195720.9 C+0.71 C
195820.5 C+0.39 C
195920.0 C-0.14 C
196020.3 C+0.18 C
196119.9 C-0.27 C
196220.5 C+0.39 C
196320.3 C+0.16 C
196420.3 C+0.18 C
196520.5 C+0.30 C
196620.1 C-0.07 C
196720.0 C-0.12 C
196819.9 C-0.25 C
196920.6 C+0.46 C
197020.3 C+0.14 C
197120.3 C+0.12 C
197220.8 C+0.62 C
197320.1 C-0.02 C
197420.4 C+0.25 C
197520.1 C-0.05 C
197620.2 C+0.00 C
197720.2 C+0.07 C
197820.2 C+0.09 C
198020.4 C+0.28 C
198119.6 C-0.50 C
198220.4 C+0.27 C
198319.8 C-0.36 C
198619.9 C-0.25 C
198820.2 C+0.05 C
199120.3 C+0.18 C
199219.7 C-0.41 C
199319.7 C-0.45 C
199420.7 C+0.50 C
199619.9 C-0.25 C
199719.4 C-0.73 C
199820.1 C-0.07 C

The fitted trend in annual mean temperature here over 1947 to 1998 is -0.03 C (-0.10 to 0.05) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.05 F (-0.17 to 0.08) per decade. The slope is a straight line fitted to 44 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Tacotan
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature-0.03 C (-0.10 to 0.05) per decade-0.05 F (-0.17 to 0.08) per decade1947 to 199844Not clearly different from zero
Mean daily maximum0.00 C (-0.11 to 0.12) per decade0.01 F (-0.20 to 0.21) per decade1947 to 199844Not clearly different from zero
Mean daily minimum-0.1 C (-0.2 to 0.1) per decade-0.1 F (-0.4 to 0.2) per decade1947 to 199844Not 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

1947 to 1999
Yearly extremes at Tacotan: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)40.0 C (104.0 F)199136.1 C (97.0 F)52
Coldest night (TNn)-3.3 C (26.1 F)19521.4 C (34.5 F)52
Wettest day (Rx1day)105.9 mm (4.2 in)197154.9 mm (2.2 in)52
Wettest five days (Rx5day)205.8 mm (8.1 in)199292.8 mm (3.7 in)52
Longest dry spell (CDD)162 days199185 days52

Hottest day (TXx)

Hottest day (TXx) at Tacotan by year The hottest day of the year at Tacotan, 1947 to 1999. The record is 40.0 C (104.0 F) in 1991, marked on the chart; the median year is 36.1 C (97.0 F). 323436384019501960197019801990Record: 40.0 C (104.0 F) in 1991
The hottest day of the year at Tacotan, 1947 to 1999. The record is 40.0 C (104.0 F) in 1991, marked on the chart; the median year is 36.1 C (97.0 F).
Hottest day (TXx) at Tacotan by year
YearHottest day (TXx)
194735.0 C (95.0 F)
194836.1 C (97.0 F)
194935.6 C (96.1 F)
195039.4 C (102.9 F)
195136.1 C (97.0 F)
195235.0 C (95.0 F)
195337.2 C (99.0 F)
195435.0 C (95.0 F)
195536.7 C (98.1 F)
195635.6 C (96.1 F)
195735.6 C (96.1 F)
195835.6 C (96.1 F)
195933.9 C (93.0 F)
196035.6 C (96.1 F)
196135.0 C (95.0 F)
196236.1 C (97.0 F)
196337.8 C (100.0 F)
196435.0 C (95.0 F)
196537.8 C (100.0 F)
196637.2 C (99.0 F)
196735.0 C (95.0 F)
196836.1 C (97.0 F)
196937.8 C (100.0 F)
197036.1 C (97.0 F)
197139.4 C (102.9 F)
197236.7 C (98.1 F)
197336.1 C (97.0 F)
197436.7 C (98.1 F)
197535.6 C (96.1 F)
197636.1 C (97.0 F)
197735.0 C (95.0 F)
197836.1 C (97.0 F)
197935.0 C (95.0 F)
198036.7 C (98.1 F)
198135.0 C (95.0 F)
198236.1 C (97.0 F)
198338.9 C (102.0 F)
198436.7 C (98.1 F)
198536.7 C (98.1 F)
198637.8 C (100.0 F)
198735.6 C (96.1 F)
198837.8 C (100.0 F)
198935.6 C (96.1 F)
199140.0 C (104.0 F)
199235.0 C (95.0 F)
199336.1 C (97.0 F)
199437.8 C (100.0 F)
199535.6 C (96.1 F)
199635.0 C (95.0 F)
199734.4 C (93.9 F)
199838.9 C (102.0 F)
199932.2 C (90.0 F)

Coldest night (TNn)

Coldest night (TNn) at Tacotan by year The coldest night of the year at Tacotan, 1947 to 1999. The record is -3.3 C (26.1 F) in 1952, marked on the chart; the median year is 1.4 C (34.5 F). -4-2024619501960197019801990Record: -3.3 C (26.1 F) in 1952
The coldest night of the year at Tacotan, 1947 to 1999. The record is -3.3 C (26.1 F) in 1952, marked on the chart; the median year is 1.4 C (34.5 F).
Coldest night (TNn) at Tacotan by year
YearColdest night (TNn)
19472.8 C (37.0 F)
19480.6 C (33.1 F)
19490.6 C (33.1 F)
1950-0.6 C (30.9 F)
1951-2.2 C (28.0 F)
1952-3.3 C (26.1 F)
19530.0 C (32.0 F)
19541.7 C (35.1 F)
19550.0 C (32.0 F)
19560.0 C (32.0 F)
19573.9 C (39.0 F)
19583.9 C (39.0 F)
19590.6 C (33.1 F)
19601.1 C (34.0 F)
19612.8 C (37.0 F)
19622.8 C (37.0 F)
19631.1 C (34.0 F)
19642.8 C (37.0 F)
19653.3 C (37.9 F)
19662.2 C (36.0 F)
19670.0 C (32.0 F)
19682.2 C (36.0 F)
19694.4 C (39.9 F)
19701.1 C (34.0 F)
19710.6 C (33.1 F)
19723.3 C (37.9 F)
19730.6 C (33.1 F)
19743.9 C (39.0 F)
19750.6 C (33.1 F)
19760.6 C (33.1 F)
19774.4 C (39.9 F)
19783.3 C (37.9 F)
19792.8 C (37.0 F)
19804.4 C (39.9 F)
19812.2 C (36.0 F)
19823.3 C (37.9 F)
19830.0 C (32.0 F)
19842.8 C (37.0 F)
19851.7 C (35.1 F)
19860.6 C (33.1 F)
19870.6 C (33.1 F)
1988-2.2 C (28.0 F)
19893.3 C (37.9 F)
19911.7 C (35.1 F)
19922.8 C (37.0 F)
19930.6 C (33.1 F)
19943.9 C (39.0 F)
19952.8 C (37.0 F)
19961.1 C (34.0 F)
1997-2.2 C (28.0 F)
19980.0 C (32.0 F)
19990.6 C (33.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Tacotan by year The wettest day of the year at Tacotan, 1947 to 1999. The record is 105.9 mm (4.2 in) in 1971, marked on the chart; the median year is 54.9 mm (2.2 in). 05010015019501960197019801990Record: 105.9 mm (4.2 in) in 1971
The wettest day of the year at Tacotan, 1947 to 1999. The record is 105.9 mm (4.2 in) in 1971, marked on the chart; the median year is 54.9 mm (2.2 in).
Wettest day (Rx1day) at Tacotan by year
YearWettest day (Rx1day)
194734.3 mm (1.4 in)
194853.3 mm (2.1 in)
194952.8 mm (2.1 in)
195042.4 mm (1.7 in)
195170.1 mm (2.8 in)
195235.8 mm (1.4 in)
195352.1 mm (2.1 in)
195449.5 mm (1.9 in)
195549.8 mm (2.0 in)
195645.5 mm (1.8 in)
195755.9 mm (2.2 in)
195867.8 mm (2.7 in)
195957.9 mm (2.3 in)
196054.9 mm (2.2 in)
196156.9 mm (2.2 in)
196250.8 mm (2.0 in)
196380.8 mm (3.2 in)
196442.4 mm (1.7 in)
196547.8 mm (1.9 in)
196658.9 mm (2.3 in)
196755.4 mm (2.2 in)
196899.6 mm (3.9 in)
196936.6 mm (1.4 in)
197071.9 mm (2.8 in)
1971105.9 mm (4.2 in)
197256.1 mm (2.2 in)
197348.3 mm (1.9 in)
197454.4 mm (2.1 in)
197542.4 mm (1.7 in)
197663.8 mm (2.5 in)
197756.4 mm (2.2 in)
197839.9 mm (1.6 in)
197910.4 mm (0.4 in)
198056.4 mm (2.2 in)
198156.4 mm (2.2 in)
198269.3 mm (2.7 in)
198354.9 mm (2.2 in)
198451.1 mm (2.0 in)
198535.3 mm (1.4 in)
198686.9 mm (3.4 in)
198768.1 mm (2.7 in)
198857.2 mm (2.3 in)
198943.7 mm (1.7 in)
199163.8 mm (2.5 in)
199286.1 mm (3.4 in)
199354.4 mm (2.1 in)
199454.4 mm (2.1 in)
199563.5 mm (2.5 in)
199653.3 mm (2.1 in)
199769.6 mm (2.7 in)
199856.1 mm (2.2 in)
19994.8 mm (0.19 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Tacotan by year The wettest five days of the year at Tacotan, 1947 to 1999. The record is 205.8 mm (8.1 in) in 1992, marked on the chart; the median year is 92.8 mm (3.7 in). 010020030019501960197019801990Record: 205.8 mm (8.1 in) in 1992
The wettest five days of the year at Tacotan, 1947 to 1999. The record is 205.8 mm (8.1 in) in 1992, marked on the chart; the median year is 92.8 mm (3.7 in).
Wettest five days (Rx5day) at Tacotan by year
YearWettest five days (Rx5day)
194762.5 mm (2.5 in)
1948104.2 mm (4.1 in)
194983.2 mm (3.3 in)
195084.1 mm (3.3 in)
195194.6 mm (3.7 in)
195271.1 mm (2.8 in)
195362.5 mm (2.5 in)
195494.9 mm (3.7 in)
195590.0 mm (3.5 in)
195660.3 mm (2.4 in)
1957121.0 mm (4.8 in)
195873.6 mm (2.9 in)
195998.8 mm (3.9 in)
196080.3 mm (3.2 in)
1961109.5 mm (4.3 in)
196265.1 mm (2.6 in)
1963147.9 mm (5.8 in)
196472.9 mm (2.9 in)
196558.2 mm (2.3 in)
196685.1 mm (3.4 in)
1967104.3 mm (4.1 in)
1968138.8 mm (5.5 in)
196972.2 mm (2.8 in)
1970148.7 mm (5.9 in)
1971152.6 mm (6.0 in)
197289.9 mm (3.5 in)
197373.5 mm (2.9 in)
1974101.7 mm (4.0 in)
197586.7 mm (3.4 in)
1976135.4 mm (5.3 in)
197766.1 mm (2.6 in)
197869.1 mm (2.7 in)
197910.4 mm (0.4 in)
1980121.1 mm (4.8 in)
1981107.2 mm (4.2 in)
1982103.4 mm (4.1 in)
1983116.9 mm (4.6 in)
1984126.5 mm (5.0 in)
198582.0 mm (3.2 in)
1986131.9 mm (5.2 in)
1987119.9 mm (4.7 in)
198892.6 mm (3.6 in)
198964.1 mm (2.5 in)
1991127.4 mm (5.0 in)
1992205.8 mm (8.1 in)
199371.7 mm (2.8 in)
199493.0 mm (3.7 in)
1995100.3 mm (3.9 in)
1996113.3 mm (4.5 in)
199799.5 mm (3.9 in)
199888.1 mm (3.5 in)
19994.8 mm (0.19 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Tacotan by year The longest dry spell of the year at Tacotan, 1947 to 1999. The record is 162 days in 1991, marked on the chart; the median year is 85 days. 05010015020019501960197019801990Record: 162 days in 1991
The longest dry spell of the year at Tacotan, 1947 to 1999. The record is 162 days in 1991, marked on the chart; the median year is 85 days.
Longest dry spell (CDD) at Tacotan by year
YearLongest dry spell (CDD)
194772 days
194842 days
194973 days
195079 days
195174 days
195260 days
195387 days
195454 days
1955105 days
1956112 days
1957151 days
195883 days
195988 days
1960150 days
196194 days
196274 days
1963128 days
1964145 days
196566 days
196648 days
196795 days
196863 days
196989 days
197069 days
197172 days
197240 days
197384 days
197484 days
1975110 days
197692 days
197756 days
197868 days
1979109 days
1980112 days
198139 days
198285 days
1983125 days
198468 days
198576 days
198665 days
198779 days
198896 days
1989112 days
1991162 days
199288 days
1993135 days
1994132 days
1995106 days
1996136 days
199750 days
1998159 days
199942 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

49 years, 1947 to 1998

A day with at least 55.0 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 106.6 mm (4.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Tacotan: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years55.0 mm (2.2 in)
5 years68.0 mm (2.7 in)
10 years76.9 mm (3.0 in)
25 years88.6 mm (3.5 in)
50 years97.5 mm (3.8 in)Longer than the 49 years of record
100 years106.6 mm (4.2 in)Longer than the 49 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, 49 years of values from 1947 to 1998.

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: 105.9 mm (4.2 in) in 1971; 99.6 mm (3.9 in) in 1968; 86.9 mm (3.4 in) in 1986.

Download the Data

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