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San Luis San Pedro Weather Records (MXN00012070)

Record envelope, standing records and threshold days for San Luis San Pedro (MXN00012070), Mexico, with 41 years of record.

Key Facts for San Luis San Pedro

  • San Luis San Pedro (MXN00012070) is a weather station in Mexico at 17.27 latitude and -100.63 longitude, 164 m (538 ft) above sea level.
  • The station reports from 1953 to 1993, 41 years of record.
  • 1,464 records set at San Luis San Pedro still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • San Luis San Pedro tied a daily record high maximum temperature of 35.0 C (95.0 F) on 27 August 1993.

About the Station

  • Location: Mexico, 17.27 latitude, -100.63 longitude.
  • Elevation: 164 m (538 ft).
  • Period of record: 1953 to 1993, 41 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 San Luis San Pedro, with 2026 drawn through them The band shows the record high and record low for each calendar day at San Luis San Pedro. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 1020304050 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at San Luis San Pedro. 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 San Luis San Pedro, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan39.4 C (102.9 F)11.7 C (53.1 F)n/an/a
Feb40.0 C (104.0 F)12.8 C (55.0 F)n/an/a
Mar41.7 C (107.1 F)12.8 C (55.0 F)n/an/a
Apr41.7 C (107.1 F)14.4 C (57.9 F)n/an/a
May41.7 C (107.1 F)15.0 C (59.0 F)n/an/a
Jun42.8 C (109.0 F)16.7 C (62.1 F)n/an/a
Jul40.0 C (104.0 F)16.7 C (62.1 F)n/an/a
Aug38.3 C (100.9 F)17.2 C (63.0 F)n/an/a
Sep35.6 C (96.1 F)16.7 C (62.1 F)n/an/a
Oct35.6 C (96.1 F)16.7 C (62.1 F)n/an/a
Nov36.1 C (97.0 F)13.9 C (57.0 F)n/an/a
Dec37.2 C (99.0 F)13.9 C (57.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at San Luis San Pedro by the year they were set 1,464 records at San Luis San Pedro still stand. 1991 holds the most, with 235. 01002003001956: 521957: 231958: 371959: 301960: 371961: 1681962: 1041963: 211964: 191965: 141966: 191967: 91968: 181969: 471970: 411971: 1131972: 311973: 391974: 391975: 181976: 241977: 191978: 241979: 361980: 231981: 241982: 251983: 261984: 251985: 161986: 141987: 371988: 221991: 2351992: 211993: 14195619601964196819721976198019841988
1,464 records at San Luis San Pedro still stand. 1991 holds the most, with 235.
Standing records at San Luis San Pedro by the year they were set
Year setStanding records
195652
195723
195837
195930
196037
1961168
1962104
196321
196419
196514
196619
19679
196818
196947
197041
1971113
197231
197339
197439
197518
197624
197719
197824
197936
198023
198124
198225
198326
198425
198516
198614
198737
198822
1991235
199221
199314

All-Time Record Progression

4 new records
When San Luis San Pedro set new all-time records 4 all-time records were set at San Luis San Pedro between 16 January 1991 and 2 June 1991. Each dot is a new record. Record low minimum temperatureRecord high maximum temperature16 January 1991: Record low minimum temperature 11.7 C (53.1 F)5 March 1991: Record high maximum temperature 40.6 C (105.1 F)18 March 1991: Record high maximum temperature 41.7 C (107.1 F)2 June 1991: Record high maximum temperature 42.8 C (109.0 F)
4 all-time records were set at San Luis San Pedro between 16 January 1991 and 2 June 1991. Each dot is a new record.
When San Luis San Pedro set new all-time records
DateKindDetail
1991-01-16Record low minimum temperatureRecord low minimum temperature 11.7 C (53.1 F)
1991-03-05Record high maximum temperatureRecord high maximum temperature 40.6 C (105.1 F)
1991-03-18Record high maximum temperatureRecord high maximum temperature 41.7 C (107.1 F)
1991-06-02Record high maximum temperatureRecord high maximum temperature 42.8 C (109.0 F)

Wettest Day of Each Month

Nov: 326.9 mm (12.9 in)
Record daily precipitation for each month at San Luis San Pedro The wettest day on record for each calendar month at San Luis San Pedro. The most was 326.9 mm (12.9 in) on 11 November 1961. 0100200300400 Jan: 117.3 mm (4.6 in), 23 January 1980 Jan Feb: 25.9 mm (1.0 in), 6 February 1978 Feb Mar: 23.9 mm (0.9 in), 5 March 1968 Mar Apr: 34.8 mm (1.4 in), 5 April 1973 Apr May: 87.9 mm (3.5 in), 30 May 1978 May Jun: 209.8 mm (8.3 in), 22 June 1973 Jun Jul: 317.0 mm (12.5 in), 6 July 1955 Jul Aug: 140.0 mm (5.5 in), 16 August 1960 Aug Sep: 300.0 mm (11.8 in), 12 September 1961 Sep Oct: 300.0 mm (11.8 in), 7 October 1976 Oct Nov: 326.9 mm (12.9 in), 11 November 1961 Nov Dec: 55.9 mm (2.2 in), 1 December 1964 Dec
The wettest day on record for each calendar month at San Luis San Pedro. The most was 326.9 mm (12.9 in) on 11 November 1961.
Record daily precipitation for each month at San Luis San Pedro
MonthRecord daily precipitation (mm)Date
Jan117.3 mm (4.6 in)23 January 1980
Feb25.9 mm (1.0 in)6 February 1978
Mar23.9 mm (0.9 in)5 March 1968
Apr34.8 mm (1.4 in)5 April 1973
May87.9 mm (3.5 in)30 May 1978
Jun209.8 mm (8.3 in)22 June 1973
Jul317.0 mm (12.5 in)6 July 1955
Aug140.0 mm (5.5 in)16 August 1960
Sep300.0 mm (11.8 in)12 September 1961
Oct300.0 mm (11.8 in)7 October 1976
Nov326.9 mm (12.9 in)11 November 1961
Dec55.9 mm (2.2 in)1 December 1964

Period of Record Coverage

1956 to 1993
Days with data per year at San Luis San Pedro 36 years of record at San Luis San Pedro, 1956 to 1993. 4 years have data for under 90 percent of days and are left out of rankings: 1986, 1987, 1988, 1993. 1956: 366 of 366 days1957: 365 of 365 days1958: 365 of 365 days1959: 365 of 365 days1960: 336 of 366 days1961: 345 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: 366 of 366 days1969: 363 of 365 days1970: 364 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: 365 of 365 days1979: 360 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 365 of 365 days1984: 366 of 366 days1985: 334 of 365 days1986: 143 of 365 days1987: 126 of 365 days1988: 203 of 366 days1991: 346 of 365 days1992: 335 of 366 days1993: 212 of 365 days196019651970197519801985
36 years of record at San Luis San Pedro, 1956 to 1993. 4 years have data for under 90 percent of days and are left out of rankings: 1986, 1987, 1988, 1993.
Days with data per year at San Luis San Pedro
YearDays with dataShare of yearComplete
1956366100%Yes
1957365100%Yes
1958365100%Yes
1959365100%Yes
196033692%Yes
196134595%Yes
1962365100%Yes
1963365100%Yes
1964366100%Yes
1965365100%Yes
1966365100%Yes
1967365100%Yes
1968366100%Yes
196936399%Yes
1970364100%Yes
1971365100%Yes
1972366100%Yes
1973365100%Yes
1974365100%Yes
1975365100%Yes
1976366100%Yes
1977365100%Yes
1978365100%Yes
197936099%Yes
1980366100%Yes
1981365100%Yes
1982365100%Yes
1983365100%Yes
1984366100%Yes
198533492%Yes
198614339%No
198712635%No
198820355%No
199134695%Yes
199233592%Yes
199321258%No

Latest Records

20
Latest records at San Luis San Pedro
DateStationRecordValueBeat old record byOld record stoodSignificance
27 August 1993San Luis San Pedro, MXdaily high max (Tie)35.0 C (95.0 F)tie11 years1 of 100 (Routine)
26 August 1993San Luis San Pedro, MXdaily high max36.1 C (97.0 F)1.1 C (2.0 F)11 years12 of 100 (Routine)
20 August 1993San Luis San Pedro, MXdaily high min (Tie)25.6 C (78.1 F)tie32 years3 of 100 (Routine)
19 August 1993San Luis San Pedro, MXdaily rain53.1 mm (2.1 in)1.8 mm (0.07 in)18 years9 of 100 (Routine)
18 August 1993San Luis San Pedro, MXdaily high max (Tie)35.0 C (95.0 F)tie2 years0 of 100 (Routine)
17 August 1993San Luis San Pedro, MXdaily high max35.6 C (96.1 F)1.7 C (3.1 F)36 years24 of 100 (Routine)
11 August 1993San Luis San Pedro, MXdaily rain59.9 mm (2.4 in)9.1 mm (0.36 in)10 years11 of 100 (Routine)
11 August 1993San Luis San Pedro, MXdaily high max (Tie)35.0 C (95.0 F)tie36 years3 of 100 (Routine)
10 August 1993San Luis San Pedro, MXdaily high max (Tie)35.0 C (95.0 F)tie16 years2 of 100 (Routine)
8 August 1993San Luis San Pedro, MXdaily high min25.6 C (78.1 F)0.6 C (1.1 F)32 years16 of 100 (Routine)
4 August 1993San Luis San Pedro, MXdaily high max (Tie)35.0 C (95.0 F)tie36 years3 of 100 (Routine)
3 August 1993San Luis San Pedro, MXdaily high max (Tie)35.6 C (96.1 F)tie2 years0 of 100 (Routine)
28 July 1993San Luis San Pedro, MXdaily low max (Tie)30.0 C (86.0 F)tie32 years3 of 100 (Routine)
27 July 1993San Luis San Pedro, MXdaily rain140.5 mm (5.5 in)63.5 mm (2.5 in)20 years34 of 100 (Routine)
27 July 1993San Luis San Pedro, MXdaily high min (Tie)25.0 C (77.0 F)tie32 years3 of 100 (Routine)
27 July 1993San Luis San Pedro, MXdaily high max (Tie)34.4 C (93.9 F)tie28 years2 of 100 (Routine)
26 July 1993San Luis San Pedro, MXdaily high max35.6 C (96.1 F)1.2 C (2.2 F)8 years12 of 100 (Routine)
25 July 1993San Luis San Pedro, MXdaily high max35.6 C (96.1 F)1.7 C (3.1 F)34 years23 of 100 (Routine)
23 July 1993San Luis San Pedro, MXdaily high max36.1 C (97.0 F)1.7 C (3.1 F)10 years16 of 100 (Routine)
22 July 1993San Luis San Pedro, MXdaily high max (Tie)35.0 C (95.0 F)tie36 years3 of 100 (Routine)

Climate Trend

28 complete years, 1956 to 1991
Annual mean temperature at San Luis San Pedro as warming stripes, 1956 to 1991 One stripe for each of 28 complete years at San Luis San Pedro, 1956 to 1991. Blue stripes are years cooler than the station's own mean of 26.7 C (80.0 F); red stripes are warmer. The coolest year was 1971, at 24.5 C (76.1 F), and the warmest was 1991, at 27.9 C (82.2 F). The strongest colour marks a difference of 2.2 C (4.0 F). 1956: 26.4 C, -0.2 C from the station mean1957: 27.0 C, +0.4 C from the station mean1958: 26.6 C, -0.1 C from the station mean1959: 27.1 C, +0.4 C from the station mean1962: 26.3 C, -0.4 C from the station mean1963: 26.8 C, +0.1 C from the station mean1964: 26.5 C, -0.1 C from the station mean1965: 26.6 C, 0.0 C from the station mean1966: 26.6 C, -0.1 C from the station mean1967: 26.4 C, -0.2 C from the station mean1968: 27.0 C, +0.3 C from the station mean1969: 25.9 C, -0.7 C from the station mean1970: 25.5 C, -1.2 C from the station mean1971: 24.5 C, -2.2 C from the station mean1972: 25.7 C, -0.9 C from the station mean1973: 25.3 C, -1.4 C from the station mean1974: 25.5 C, -1.2 C from the station mean1975: 26.2 C, -0.4 C from the station mean1976: 27.3 C, +0.6 C from the station mean1977: 27.8 C, +1.1 C from the station mean1978: 27.4 C, +0.8 C from the station mean1979: 27.3 C, +0.7 C from the station mean1980: 27.5 C, +0.8 C from the station mean1981: 27.1 C, +0.5 C from the station mean1982: 27.7 C, +1.1 C from the station mean1983: 27.3 C, +0.6 C from the station mean1984: 27.2 C, +0.5 C from the station mean1991: 27.9 C, +1.2 C from the station mean19561960196519701975198019851990
One stripe for each of 28 complete years at San Luis San Pedro, 1956 to 1991. Blue stripes are years cooler than the station's own mean of 26.7 C (80.0 F); red stripes are warmer. The coolest year was 1971, at 24.5 C (76.1 F), and the warmest was 1991, at 27.9 C (82.2 F). The strongest colour marks a difference of 2.2 C (4.0 F).
Annual mean temperature at San Luis San Pedro as warming stripes, 1956 to 1991
YearAnnual mean temperatureDifference from the station mean
195626.4 C-0.22 C
195727.0 C+0.38 C
195826.6 C-0.11 C
195927.1 C+0.39 C
196226.3 C-0.40 C
196326.8 C+0.12 C
196426.5 C-0.15 C
196526.6 C-0.05 C
196626.6 C-0.10 C
196726.4 C-0.23 C
196827.0 C+0.31 C
196925.9 C-0.74 C
197025.5 C-1.16 C
197124.5 C-2.17 C
197225.7 C-0.93 C
197325.3 C-1.39 C
197425.5 C-1.17 C
197526.2 C-0.42 C
197627.3 C+0.63 C
197727.8 C+1.12 C
197827.4 C+0.76 C
197927.3 C+0.68 C
198027.5 C+0.84 C
198127.1 C+0.47 C
198227.7 C+1.06 C
198327.3 C+0.62 C
198427.2 C+0.52 C
199127.9 C+1.21 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

1953 to 1993
Yearly extremes at San Luis San Pedro: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)42.8 C (109.0 F)199135.6 C (96.1 F)36
Coldest night (TNn)11.7 C (53.1 F)199115.6 C (60.1 F)36
Wettest day (Rx1day)326.9 mm (12.9 in)196199.8 mm (3.9 in)39
Wettest five days (Rx5day)644.4 mm (25.4 in)1955197.6 mm (7.8 in)39
Longest dry spell (CDD)175 days1963117 days39

Hottest day (TXx)

Hottest day (TXx) at San Luis San Pedro by year The hottest day of the year at San Luis San Pedro, 1953 to 1993. The record is 42.8 C (109.0 F) in 1991, marked on the chart; the median year is 35.6 C (96.1 F). 32.53537.54042.5451960197019801990Record: 42.8 C (109.0 F) in 1991
The hottest day of the year at San Luis San Pedro, 1953 to 1993. The record is 42.8 C (109.0 F) in 1991, marked on the chart; the median year is 35.6 C (96.1 F).
Hottest day (TXx) at San Luis San Pedro by year
YearHottest day (TXx)
1953n/a
1954n/a
1955n/a
195635.6 C (96.1 F)
195736.7 C (98.1 F)
195835.6 C (96.1 F)
195935.6 C (96.1 F)
196035.0 C (95.0 F)
196139.4 C (102.9 F)
196235.0 C (95.0 F)
196339.4 C (102.9 F)
196436.7 C (98.1 F)
196535.0 C (95.0 F)
196633.9 C (93.0 F)
196733.9 C (93.0 F)
196835.0 C (95.0 F)
196935.0 C (95.0 F)
197035.6 C (96.1 F)
197140.0 C (104.0 F)
197239.4 C (102.9 F)
197333.3 C (91.9 F)
197435.0 C (95.0 F)
197535.6 C (96.1 F)
197635.0 C (95.0 F)
197736.1 C (97.0 F)
197835.6 C (96.1 F)
197938.3 C (100.9 F)
198035.6 C (96.1 F)
198136.7 C (98.1 F)
198237.2 C (99.0 F)
198335.6 C (96.1 F)
198436.1 C (97.0 F)
198536.1 C (97.0 F)
198636.7 C (98.1 F)
198737.2 C (99.0 F)
198835.6 C (96.1 F)
199142.8 C (109.0 F)
199238.3 C (100.9 F)
199336.7 C (98.1 F)

Coldest night (TNn)

Coldest night (TNn) at San Luis San Pedro by year The coldest night of the year at San Luis San Pedro, 1953 to 1993. The record is 11.7 C (53.1 F) in 1991, marked on the chart; the median year is 15.6 C (60.1 F). 1012.51517.52022.51960197019801990Record: 11.7 C (53.1 F) in 1991
The coldest night of the year at San Luis San Pedro, 1953 to 1993. The record is 11.7 C (53.1 F) in 1991, marked on the chart; the median year is 15.6 C (60.1 F).
Coldest night (TNn) at San Luis San Pedro by year
YearColdest night (TNn)
1953n/a
1954n/a
1955n/a
195616.7 C (62.1 F)
195716.7 C (62.1 F)
195815.0 C (59.0 F)
195916.7 C (62.1 F)
196015.0 C (59.0 F)
196116.1 C (61.0 F)
196215.6 C (60.1 F)
196312.8 C (55.0 F)
196415.0 C (59.0 F)
196515.6 C (60.1 F)
196616.1 C (61.0 F)
196715.0 C (59.0 F)
196817.8 C (64.0 F)
196916.7 C (62.1 F)
197012.8 C (55.0 F)
197112.8 C (55.0 F)
197213.9 C (57.0 F)
197313.9 C (57.0 F)
197413.9 C (57.0 F)
197513.3 C (55.9 F)
197615.0 C (59.0 F)
197719.4 C (66.9 F)
197818.9 C (66.0 F)
197916.1 C (61.0 F)
198016.7 C (62.1 F)
198115.6 C (60.1 F)
198217.8 C (64.0 F)
198315.6 C (60.1 F)
198416.1 C (61.0 F)
198516.1 C (61.0 F)
198613.9 C (57.0 F)
198720.6 C (69.1 F)
198815.0 C (59.0 F)
199111.7 C (53.1 F)
199215.6 C (60.1 F)
199320.0 C (68.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at San Luis San Pedro by year The wettest day of the year at San Luis San Pedro, 1953 to 1993. The record is 326.9 mm (12.9 in) in 1961, marked on the chart; the median year is 99.8 mm (3.9 in). 01002003004001960197019801990Record: 326.9 mm (12.9 in) in 1961
The wettest day of the year at San Luis San Pedro, 1953 to 1993. The record is 326.9 mm (12.9 in) in 1961, marked on the chart; the median year is 99.8 mm (3.9 in).
Wettest day (Rx1day) at San Luis San Pedro by year
YearWettest day (Rx1day)
19532.3 mm (0.09 in)
1954192.3 mm (7.6 in)
1955317.0 mm (12.5 in)
195662.5 mm (2.5 in)
1957159.8 mm (6.3 in)
195879.8 mm (3.1 in)
195979.8 mm (3.1 in)
1960140.0 mm (5.5 in)
1961326.9 mm (12.9 in)
1962156.0 mm (6.1 in)
196399.8 mm (3.9 in)
196485.9 mm (3.4 in)
196531.5 mm (1.2 in)
1966128.8 mm (5.1 in)
1967249.9 mm (9.8 in)
1968113.8 mm (4.5 in)
196999.8 mm (3.9 in)
197073.9 mm (2.9 in)
197169.9 mm (2.8 in)
197277.0 mm (3.0 in)
1973209.8 mm (8.3 in)
1974199.9 mm (7.9 in)
1975149.9 mm (5.9 in)
1976300.0 mm (11.8 in)
197754.9 mm (2.2 in)
197887.9 mm (3.5 in)
1979118.9 mm (4.7 in)
1980117.3 mm (4.6 in)
198178.5 mm (3.1 in)
198256.9 mm (2.2 in)
1983102.9 mm (4.1 in)
1984249.9 mm (9.8 in)
198562.0 mm (2.4 in)
198633.3 mm (1.3 in)
198756.1 mm (2.2 in)
198890.4 mm (3.6 in)
199137.1 mm (1.5 in)
1992111.0 mm (4.4 in)
1993221.5 mm (8.7 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at San Luis San Pedro by year The wettest five days of the year at San Luis San Pedro, 1953 to 1993. The record is 644.4 mm (25.4 in) in 1955, marked on the chart; the median year is 197.6 mm (7.8 in). 02004006008001960197019801990Record: 644.4 mm (25.4 in) in 1955
The wettest five days of the year at San Luis San Pedro, 1953 to 1993. The record is 644.4 mm (25.4 in) in 1955, marked on the chart; the median year is 197.6 mm (7.8 in).
Wettest five days (Rx5day) at San Luis San Pedro by year
YearWettest five days (Rx5day)
19532.3 mm (0.09 in)
1954303.1 mm (11.9 in)
1955644.4 mm (25.4 in)
1956136.3 mm (5.4 in)
1957218.2 mm (8.6 in)
1958149.7 mm (5.9 in)
1959129.9 mm (5.1 in)
1960203.5 mm (8.0 in)
1961392.0 mm (15.4 in)
1962243.8 mm (9.6 in)
1963173.8 mm (6.8 in)
1964113.1 mm (4.5 in)
196551.8 mm (2.0 in)
1966237.3 mm (9.3 in)
1967442.5 mm (17.4 in)
1968162.0 mm (6.4 in)
1969211.3 mm (8.3 in)
1970190.6 mm (7.5 in)
1971184.7 mm (7.3 in)
1972261.4 mm (10.3 in)
1973347.7 mm (13.7 in)
1974284.0 mm (11.2 in)
1975362.0 mm (14.3 in)
1976420.3 mm (16.5 in)
197781.6 mm (3.2 in)
1978116.4 mm (4.6 in)
1979197.6 mm (7.8 in)
1980203.1 mm (8.0 in)
1981236.8 mm (9.3 in)
1982137.4 mm (5.4 in)
1983186.7 mm (7.4 in)
1984426.9 mm (16.8 in)
1985148.3 mm (5.8 in)
198662.0 mm (2.4 in)
198761.2 mm (2.4 in)
1988203.0 mm (8.0 in)
1991107.7 mm (4.2 in)
1992140.7 mm (5.5 in)
1993283.3 mm (11.2 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at San Luis San Pedro by year The longest dry spell of the year at San Luis San Pedro, 1953 to 1993. The record is 175 days in 1963, marked on the chart; the median year is 117 days. 501001502001960197019801990Record: 175 days in 1963
The longest dry spell of the year at San Luis San Pedro, 1953 to 1993. The record is 175 days in 1963, marked on the chart; the median year is 117 days.
Longest dry spell (CDD) at San Luis San Pedro by year
YearLongest dry spell (CDD)
195360 days
1954122 days
1955148 days
195696 days
1957146 days
1958127 days
1959102 days
1960103 days
1961151 days
1962107 days
1963175 days
1964153 days
1965111 days
196691 days
1967123 days
196869 days
196982 days
1970109 days
1971142 days
1972152 days
197394 days
1974114 days
1975128 days
197678 days
1977143 days
197873 days
1979101 days
1980122 days
1981111 days
1982139 days
198371 days
1984117 days
1985121 days
1986121 days
198752 days
198896 days
1991132 days
1992121 days
1993158 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

34 years, 1954 to 1992

A day with at least 110.5 mm (4.4 in) of rain is expected about once in 2 years. A day with at least 460.5 mm (18.1 in) of rain is expected about once in 100 years.

Rainfall return levels at San Luis San Pedro: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years110.5 mm (4.4 in)
5 years179.5 mm (7.1 in)
10 years233.8 mm (9.2 in)
25 years313.8 mm (12.4 in)
50 years382.7 mm (15.1 in)Longer than the 34 years of record
100 years460.5 mm (18.1 in)Longer than the 34 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, 34 years of values from 1954 to 1992.

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: 326.9 mm (12.9 in) in 1961; 317.0 mm (12.5 in) in 1955; 300.0 mm (11.8 in) in 1976.

Download the Data

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