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Siquirichi (Smn) Weather Records (MXN00008138)

Record envelope, standing records and threshold days for Siquirichi (Smn) (MXN00008138), Mexico, with 46 years of record.

Key Facts for Siquirichi (Smn)

  • Siquirichi (Smn) (MXN00008138) is a weather station in Mexico at 27.27 latitude and -107.22 longitude, 2,050 m (6,725 ft) above sea level.
  • The station reports from 1943 to 1988, 46 years of record.
  • 1,464 records set at Siquirichi (Smn) still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Siquirichi (Smn) set a daily record low minimum temperature of -12.2 C (10.0 F) on 21 January 1988.

About the Station

  • Location: Mexico, 27.27 latitude, -107.22 longitude.
  • Elevation: 2,050 m (6,725 ft).
  • Period of record: 1943 to 1988, 46 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 Siquirichi (Smn), with 2026 drawn through them The band shows the record high and record low for each calendar day at Siquirichi (Smn). The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Siquirichi (Smn). 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 Siquirichi (Smn), with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan31.7 C (89.1 F)-15.0 C (5.0 F)n/an/a
Feb31.7 C (89.1 F)-15.0 C (5.0 F)n/an/a
Mar35.0 C (95.0 F)-17.8 C (0.0 F)n/an/a
Apr36.7 C (98.1 F)-12.2 C (10.0 F)n/an/a
May38.9 C (102.0 F)-8.3 C (17.1 F)n/an/a
Jun41.7 C (107.1 F)-5.0 C (23.0 F)n/an/a
Jul38.9 C (102.0 F)1.1 C (34.0 F)n/an/a
Aug37.8 C (100.0 F)0.6 C (33.1 F)n/an/a
Sep38.9 C (102.0 F)-7.2 C (19.0 F)n/an/a
Oct40.6 C (105.1 F)-11.1 C (12.0 F)n/an/a
Nov35.6 C (96.1 F)-12.2 C (10.0 F)n/an/a
Dec31.7 C (89.1 F)-14.4 C (6.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Siquirichi (Smn) by the year they were set 1,464 records at Siquirichi (Smn) still stand. 1950 holds the most, with 129. 0501001501943: 131944: 251945: 171946: 301947: 291949: 961950: 1291951: 611953: 171954: 301955: 251956: 351957: 451958: 101959: 271960: 281961: 181962: 411963: 1131964: 181965: 141966: 101967: 431968: 261969: 441970: 561971: 461972: 471973: 291974: 641975: 441976: 451977: 291978: 211979: 121980: 391981: 131982: 171983: 161984: 121985: 21987: 271988: 1194319491955196019651970197519801985
1,464 records at Siquirichi (Smn) still stand. 1950 holds the most, with 129.
Standing records at Siquirichi (Smn) by the year they were set
Year setStanding records
194313
194425
194517
194630
194729
194996
1950129
195161
195317
195430
195525
195635
195745
195810
195927
196028
196118
196241
1963113
196418
196514
196610
196743
196826
196944
197056
197146
197247
197329
197464
197544
197645
197729
197821
197912
198039
198113
198217
198316
198412
19852
198727
19881

All-Time Record Progression

1 new records
When Siquirichi (Smn) set new all-time records 1 all-time records were set at Siquirichi (Smn) between 1 July 1979 and 1 July 1979. Each dot is a new record. Record daily precipitation1 July 1979: Record daily precipitation 99.8 mm (3.9 in)1980
1 all-time records were set at Siquirichi (Smn) between 1 July 1979 and 1 July 1979. Each dot is a new record.
When Siquirichi (Smn) set new all-time records
DateKindDetail
1979-07-01Record daily precipitationRecord daily precipitation 99.8 mm (3.9 in)

Wettest Day of Each Month

Jul: 99.8 mm (3.9 in)
Record daily precipitation for each month at Siquirichi (Smn) The wettest day on record for each calendar month at Siquirichi (Smn). The most was 99.8 mm (3.9 in) on 1 July 1979. 0255075100 Jan: 59.9 mm (2.4 in), 24 January 1979 Jan Feb: 37.8 mm (1.5 in), 4 February 1983 Feb Mar: 61.0 mm (2.4 in), 3 March 1983 Mar Apr: 59.9 mm (2.4 in), 14 April 1981 Apr May: 30.0 mm (1.2 in), 24 May 1967 May Jun: 69.9 mm (2.8 in), 27 June 1979 Jun Jul: 99.8 mm (3.9 in), 1 July 1979 Jul Aug: 60.5 mm (2.4 in), 18 August 1960 Aug Sep: 79.8 mm (3.1 in), 6 September 1975 Sep Oct: 89.9 mm (3.5 in), 21 October 1978 Oct Nov: 66.8 mm (2.6 in), 23 November 1972 Nov Dec: 59.9 mm (2.4 in), 7 December 1980 Dec
The wettest day on record for each calendar month at Siquirichi (Smn). The most was 99.8 mm (3.9 in) on 1 July 1979.
Record daily precipitation for each month at Siquirichi (Smn)
MonthRecord daily precipitation (mm)Date
Jan59.9 mm (2.4 in)24 January 1979
Feb37.8 mm (1.5 in)4 February 1983
Mar61.0 mm (2.4 in)3 March 1983
Apr59.9 mm (2.4 in)14 April 1981
May30.0 mm (1.2 in)24 May 1967
Jun69.9 mm (2.8 in)27 June 1979
Jul99.8 mm (3.9 in)1 July 1979
Aug60.5 mm (2.4 in)18 August 1960
Sep79.8 mm (3.1 in)6 September 1975
Oct89.9 mm (3.5 in)21 October 1978
Nov66.8 mm (2.6 in)23 November 1972
Dec59.9 mm (2.4 in)7 December 1980

Period of Record Coverage

1943 to 1988
Days with data per year at Siquirichi (Smn) 43 years of record at Siquirichi (Smn), 1943 to 1988. 15 years have data for under 90 percent of days and are left out of rankings: 1943, 1944, 1947, 1951, 1953, 1958, 1975, 1976 and others. 1943: 244 of 365 days1944: 151 of 366 days1945: 365 of 365 days1946: 335 of 365 days1947: 151 of 365 days1949: 365 of 365 days1950: 365 of 365 days1951: 89 of 365 days1953: 182 of 365 days1954: 360 of 365 days1955: 363 of 365 days1956: 358 of 366 days1957: 355 of 365 days1958: 92 of 365 days1959: 365 of 365 days1960: 364 of 366 days1961: 365 of 365 days1962: 364 of 365 days1963: 364 of 365 days1964: 361 of 366 days1965: 365 of 365 days1966: 363 of 365 days1967: 334 of 365 days1968: 365 of 366 days1969: 365 of 365 days1970: 365 of 365 days1971: 364 of 365 days1972: 332 of 366 days1973: 365 of 365 days1974: 331 of 365 days1975: 214 of 365 days1976: 301 of 366 days1977: 334 of 365 days1978: 333 of 365 days1979: 242 of 365 days1980: 305 of 366 days1981: 241 of 365 days1982: 250 of 365 days1983: 364 of 365 days1984: 360 of 366 days1985: 31 of 365 days1987: 268 of 365 days1988: 57 of 366 days1950196019701980
43 years of record at Siquirichi (Smn), 1943 to 1988. 15 years have data for under 90 percent of days and are left out of rankings: 1943, 1944, 1947, 1951, 1953, 1958, 1975, 1976 and others.
Days with data per year at Siquirichi (Smn)
YearDays with dataShare of yearComplete
194324467%No
194415141%No
1945365100%Yes
194633592%Yes
194715141%No
1949365100%Yes
1950365100%Yes
19518924%No
195318250%No
195436099%Yes
195536399%Yes
195635898%Yes
195735597%Yes
19589225%No
1959365100%Yes
196036499%Yes
1961365100%Yes
1962364100%Yes
1963364100%Yes
196436199%Yes
1965365100%Yes
196636399%Yes
196733492%Yes
1968365100%Yes
1969365100%Yes
1970365100%Yes
1971364100%Yes
197233291%Yes
1973365100%Yes
197433191%Yes
197521459%No
197630182%No
197733492%Yes
197833391%Yes
197924266%No
198030583%No
198124166%No
198225068%No
1983364100%Yes
198436098%Yes
1985318%No
198726873%No
19885716%No

Latest Records

20
Latest records at Siquirichi (Smn)
DateStationRecordValueBeat old record byOld record stoodSignificance
21 January 1988Siquirichi (Smn), MXdaily low min-12.2 C (10.0 F)2.2 C (4.0 F)18 years13 of 100 (Routine)
25 December 1987Siquirichi (Smn), MXdaily low max (Tie)11.7 C (53.1 F)tie12 years1 of 100 (Routine)
24 December 1987Siquirichi (Smn), MXdaily rain19.8 mm (0.8 in)13.4 mm (0.5 in)28 years20 of 100 (Routine)
23 December 1987Siquirichi (Smn), MXdaily rain9.9 mm (0.39 in)9.9 mm (0.39 in)42 years20 of 100 (Routine)
20 December 1987Siquirichi (Smn), MXdaily low min (Tie)-9.4 C (15.1 F)tie9 years1 of 100 (Routine)
18 December 1987Siquirichi (Smn), MXdaily rain16.8 mm (0.7 in)1.1 mm (0.04 in)37 years16 of 100 (Routine)
31 August 1987Siquirichi (Smn), MXdaily high min18.9 C (66.0 F)2.2 C (4.0 F)28 years18 of 100 (Routine)
31 August 1987Siquirichi (Smn), MXdaily high max (Tie)30.0 C (86.0 F)tie36 years3 of 100 (Routine)
30 August 1987Siquirichi (Smn), MXdaily high min17.8 C (64.0 F)2.8 C (5.0 F)32 years21 of 100 (Routine)
29 August 1987Siquirichi (Smn), MXdaily high min16.7 C (62.1 F)1.1 C (2.0 F)33 years17 of 100 (Routine)
28 August 1987Siquirichi (Smn), MXdaily high min (Tie)16.7 C (62.1 F)tie28 years3 of 100 (Routine)
27 August 1987Siquirichi (Smn), MXdaily high min16.7 C (62.1 F)1.1 C (2.0 F)28 years15 of 100 (Routine)
26 August 1987Siquirichi (Smn), MXdaily high min17.8 C (64.0 F)2.2 C (4.0 F)9 years12 of 100 (Routine)
23 August 1987Siquirichi (Smn), MXmonthly high min (Tie)20.0 C (68.0 F)tie24 years5 of 100 (Routine)
22 August 1987Siquirichi (Smn), MXdaily high min17.8 C (64.0 F)1.1 C (2.0 F)9 years9 of 100 (Routine)
16 August 1987Siquirichi (Smn), MXdaily high min (Tie)15.6 C (60.1 F)tie32 years3 of 100 (Routine)
13 August 1987Siquirichi (Smn), MXdaily high min17.8 C (64.0 F)2.2 C (4.0 F)28 years18 of 100 (Routine)
12 August 1987Siquirichi (Smn), MXdaily high min16.7 C (62.1 F)1.7 C (3.1 F)32 years17 of 100 (Routine)
11 August 1987Siquirichi (Smn), MXdaily high min16.7 C (62.1 F)1.1 C (2.0 F)20 years13 of 100 (Routine)
10 August 1987Siquirichi (Smn), MXdaily high min18.9 C (66.0 F)3.3 C (5.9 F)17 years18 of 100 (Routine)

Climate Trend

22 complete years, 1945 to 1984
Annual mean temperature at Siquirichi (Smn) as warming stripes, 1945 to 1984 One stripe for each of 22 complete years at Siquirichi (Smn), 1945 to 1984. Blue stripes are years cooler than the station's own mean of 13.8 C (56.8 F); red stripes are warmer. The coolest year was 1949, at 9.7 C (49.5 F), and the warmest was 1950, at 16.7 C (62.1 F). The strongest colour marks a difference of 4.1 C (7.4 F). 1945: 12.3 C, -1.5 C from the station mean1949: 9.7 C, -4.1 C from the station mean1950: 16.7 C, +2.9 C from the station mean1954: 15.9 C, +2.1 C from the station mean1955: 15.9 C, +2.1 C from the station mean1956: 16.3 C, +2.5 C from the station mean1957: 15.9 C, +2.1 C from the station mean1959: 14.4 C, +0.6 C from the station mean1960: 13.2 C, -0.6 C from the station mean1961: 14.0 C, +0.2 C from the station mean1962: 14.9 C, +1.1 C from the station mean1963: 15.9 C, +2.1 C from the station mean1964: 12.9 C, -0.9 C from the station mean1965: 13.1 C, -0.7 C from the station mean1966: 13.7 C, -0.1 C from the station mean1968: 13.2 C, -0.6 C from the station mean1969: 12.3 C, -1.5 C from the station mean1970: 12.9 C, -0.9 C from the station mean1971: 12.4 C, -1.4 C from the station mean1973: 12.4 C, -1.4 C from the station mean1983: 12.4 C, -1.4 C from the station mean1984: 13.3 C, -0.5 C from the station mean19451950195519601965197019751980
One stripe for each of 22 complete years at Siquirichi (Smn), 1945 to 1984. Blue stripes are years cooler than the station's own mean of 13.8 C (56.8 F); red stripes are warmer. The coolest year was 1949, at 9.7 C (49.5 F), and the warmest was 1950, at 16.7 C (62.1 F). The strongest colour marks a difference of 4.1 C (7.4 F).
Annual mean temperature at Siquirichi (Smn) as warming stripes, 1945 to 1984
YearAnnual mean temperatureDifference from the station mean
194512.3 C-1.54 C
19499.7 C-4.08 C
195016.7 C+2.90 C
195415.9 C+2.09 C
195515.9 C+2.08 C
195616.3 C+2.52 C
195715.9 C+2.05 C
195914.4 C+0.57 C
196013.2 C-0.57 C
196114.0 C+0.20 C
196214.9 C+1.12 C
196315.9 C+2.09 C
196412.9 C-0.91 C
196513.1 C-0.70 C
196613.7 C-0.08 C
196813.2 C-0.58 C
196912.3 C-1.48 C
197012.9 C-0.93 C
197112.4 C-1.36 C
197312.4 C-1.44 C
198312.4 C-1.41 C
198413.3 C-0.54 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

1943 to 1988
Yearly extremes at Siquirichi (Smn): the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)41.7 C (107.1 F)195035.0 C (95.0 F)43
Coldest night (TNn)-17.8 C (0.0 F)1945-10.0 C (14.0 F)43
Wettest day (Rx1day)99.8 mm (3.9 in)197939.2 mm (1.5 in)44
Wettest five days (Rx5day)264.4 mm (10.4 in)197974.6 mm (2.9 in)44
Longest dry spell (CDD)170 days194566 days44

Hottest day (TXx)

Hottest day (TXx) at Siquirichi (Smn) by year The hottest day of the year at Siquirichi (Smn), 1943 to 1988. The record is 41.7 C (107.1 F) in 1950, marked on the chart; the median year is 35.0 C (95.0 F). 2025303540451950196019701980Record: 41.7 C (107.1 F) in 1950
The hottest day of the year at Siquirichi (Smn), 1943 to 1988. The record is 41.7 C (107.1 F) in 1950, marked on the chart; the median year is 35.0 C (95.0 F).
Hottest day (TXx) at Siquirichi (Smn) by year
YearHottest day (TXx)
194338.3 C (100.9 F)
194432.8 C (91.0 F)
194535.0 C (95.0 F)
194633.9 C (93.0 F)
194727.8 C (82.0 F)
194933.9 C (93.0 F)
195041.7 C (107.1 F)
195125.0 C (77.0 F)
1952n/a
195332.2 C (90.0 F)
195435.6 C (96.1 F)
195535.0 C (95.0 F)
195637.8 C (100.0 F)
195733.9 C (93.0 F)
195827.8 C (82.0 F)
195938.9 C (102.0 F)
196036.1 C (97.0 F)
196134.4 C (93.9 F)
196235.6 C (96.1 F)
196338.3 C (100.9 F)
196432.8 C (91.0 F)
196537.8 C (100.0 F)
196638.3 C (100.9 F)
196735.6 C (96.1 F)
196835.0 C (95.0 F)
196934.4 C (93.9 F)
197035.0 C (95.0 F)
197135.0 C (95.0 F)
197236.7 C (98.1 F)
197333.9 C (93.0 F)
197436.7 C (98.1 F)
197533.9 C (93.0 F)
197635.0 C (95.0 F)
197735.0 C (95.0 F)
197835.6 C (96.1 F)
197935.6 C (96.1 F)
198038.9 C (102.0 F)
198132.8 C (91.0 F)
198231.7 C (89.1 F)
198335.6 C (96.1 F)
198433.9 C (93.0 F)
198530.0 C (86.0 F)
198735.6 C (96.1 F)
198821.7 C (71.1 F)

Coldest night (TNn)

Coldest night (TNn) at Siquirichi (Smn) by year The coldest night of the year at Siquirichi (Smn), 1943 to 1988. The record is -17.8 C (0.0 F) in 1945, marked on the chart; the median year is -10.0 C (14.0 F). -20-15-10-501950196019701980Record: -17.8 C (0.0 F) in 1945
The coldest night of the year at Siquirichi (Smn), 1943 to 1988. The record is -17.8 C (0.0 F) in 1945, marked on the chart; the median year is -10.0 C (14.0 F).
Coldest night (TNn) at Siquirichi (Smn) by year
YearColdest night (TNn)
1943-8.3 C (17.1 F)
1944-14.4 C (6.1 F)
1945-17.8 C (0.0 F)
1946-15.0 C (5.0 F)
1947-11.1 C (12.0 F)
1949-9.4 C (15.1 F)
1950-6.1 C (21.0 F)
1951-7.8 C (18.0 F)
1952n/a
19530.0 C (32.0 F)
1954-9.4 C (15.1 F)
1955-5.6 C (21.9 F)
1956-5.0 C (23.0 F)
1957-7.2 C (19.0 F)
1958-7.2 C (19.0 F)
1959-10.0 C (14.0 F)
1960-10.0 C (14.0 F)
1961-10.0 C (14.0 F)
1962-12.2 C (10.0 F)
1963-15.0 C (5.0 F)
1964-12.2 C (10.0 F)
1965-11.1 C (12.0 F)
1966-10.0 C (14.0 F)
1967-10.0 C (14.0 F)
1968-12.2 C (10.0 F)
1969-15.0 C (5.0 F)
1970-11.1 C (12.0 F)
1971-10.0 C (14.0 F)
1972-9.4 C (15.1 F)
1973-12.2 C (10.0 F)
1974-13.3 C (8.1 F)
1975-12.2 C (10.0 F)
1976-10.0 C (14.0 F)
1977-15.0 C (5.0 F)
1978-13.3 C (8.1 F)
1979-10.0 C (14.0 F)
1980-9.4 C (15.1 F)
1981-9.4 C (15.1 F)
1982-12.2 C (10.0 F)
1983-12.8 C (9.0 F)
1984-10.0 C (14.0 F)
1985-5.0 C (23.0 F)
1987-11.1 C (12.0 F)
1988-12.2 C (10.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Siquirichi (Smn) by year The wettest day of the year at Siquirichi (Smn), 1943 to 1988. The record is 99.8 mm (3.9 in) in 1979, marked on the chart; the median year is 39.2 mm (1.5 in). 02550751001950196019701980Record: 99.8 mm (3.9 in) in 1979
The wettest day of the year at Siquirichi (Smn), 1943 to 1988. The record is 99.8 mm (3.9 in) in 1979, marked on the chart; the median year is 39.2 mm (1.5 in).
Wettest day (Rx1day) at Siquirichi (Smn) by year
YearWettest day (Rx1day)
194373.9 mm (2.9 in)
194434.8 mm (1.4 in)
194595.8 mm (3.8 in)
194633.8 mm (1.3 in)
194723.9 mm (0.9 in)
194959.9 mm (2.4 in)
195042.9 mm (1.7 in)
19510.0 mm (0.00 in)
195239.9 mm (1.6 in)
195349.8 mm (2.0 in)
195447.8 mm (1.9 in)
195537.3 mm (1.5 in)
195621.8 mm (0.9 in)
195723.9 mm (0.9 in)
195830.0 mm (1.2 in)
195931.8 mm (1.3 in)
196063.8 mm (2.5 in)
196132.8 mm (1.3 in)
196244.5 mm (1.8 in)
196338.4 mm (1.5 in)
196438.4 mm (1.5 in)
196532.3 mm (1.3 in)
196638.4 mm (1.5 in)
196742.9 mm (1.7 in)
196829.5 mm (1.2 in)
196952.8 mm (2.1 in)
197072.4 mm (2.9 in)
197125.9 mm (1.0 in)
197266.8 mm (2.6 in)
197346.0 mm (1.8 in)
197445.0 mm (1.8 in)
197579.8 mm (3.1 in)
197627.9 mm (1.1 in)
197755.9 mm (2.2 in)
197889.9 mm (3.5 in)
197999.8 mm (3.9 in)
198059.9 mm (2.4 in)
198159.9 mm (2.4 in)
198231.8 mm (1.3 in)
198361.0 mm (2.4 in)
198434.8 mm (1.4 in)
198515.0 mm (0.6 in)
198721.8 mm (0.9 in)
19886.9 mm (0.27 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Siquirichi (Smn) by year The wettest five days of the year at Siquirichi (Smn), 1943 to 1988. The record is 264.4 mm (10.4 in) in 1979, marked on the chart; the median year is 74.6 mm (2.9 in). 01002003001950196019701980Record: 264.4 mm (10.4 in) in 1979
The wettest five days of the year at Siquirichi (Smn), 1943 to 1988. The record is 264.4 mm (10.4 in) in 1979, marked on the chart; the median year is 74.6 mm (2.9 in).
Wettest five days (Rx5day) at Siquirichi (Smn) by year
YearWettest five days (Rx5day)
194382.6 mm (3.3 in)
194467.3 mm (2.6 in)
1945128.8 mm (5.1 in)
194669.2 mm (2.7 in)
194725.7 mm (1.0 in)
1949219.5 mm (8.6 in)
195068.3 mm (2.7 in)
19510.0 mm (0.00 in)
195276.5 mm (3.0 in)
195382.6 mm (3.3 in)
195469.7 mm (2.7 in)
195576.3 mm (3.0 in)
195640.6 mm (1.6 in)
195785.8 mm (3.4 in)
195898.9 mm (3.9 in)
195964.9 mm (2.6 in)
1960178.2 mm (7.0 in)
196174.4 mm (2.9 in)
196256.7 mm (2.2 in)
196389.2 mm (3.5 in)
196473.8 mm (2.9 in)
196564.5 mm (2.5 in)
196663.9 mm (2.5 in)
196770.1 mm (2.8 in)
196868.7 mm (2.7 in)
196980.7 mm (3.2 in)
1970123.2 mm (4.9 in)
197148.5 mm (1.9 in)
197271.1 mm (2.8 in)
1973104.1 mm (4.1 in)
1974109.3 mm (4.3 in)
1975116.2 mm (4.6 in)
197674.1 mm (2.9 in)
1977119.9 mm (4.7 in)
1978189.8 mm (7.5 in)
1979264.4 mm (10.4 in)
198089.9 mm (3.5 in)
198199.8 mm (3.9 in)
198254.7 mm (2.2 in)
1983123.9 mm (4.9 in)
198474.7 mm (2.9 in)
198515.8 mm (0.6 in)
198758.8 mm (2.3 in)
198817.8 mm (0.7 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Siquirichi (Smn) by year The longest dry spell of the year at Siquirichi (Smn), 1943 to 1988. The record is 170 days in 1945, marked on the chart; the median year is 66 days. 0501001502001950196019701980Record: 170 days in 1945
The longest dry spell of the year at Siquirichi (Smn), 1943 to 1988. The record is 170 days in 1945, marked on the chart; the median year is 66 days.
Longest dry spell (CDD) at Siquirichi (Smn) by year
YearLongest dry spell (CDD)
194350 days
194426 days
1945170 days
194658 days
1947126 days
194965 days
195087 days
195190 days
195260 days
195359 days
1954105 days
1955100 days
1956121 days
195789 days
195847 days
195965 days
196074 days
196165 days
196279 days
196389 days
196433 days
1965100 days
196669 days
196788 days
196850 days
1969166 days
197087 days
1971108 days
197257 days
197365 days
197444 days
197561 days
197674 days
197766 days
197897 days
197931 days
198048 days
198145 days
198281 days
198346 days
198466 days
198513 days
198734 days
198829 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.

Frost Dates and Growing Season

22 years with a frost

Across 22 years with a frost, the median last spring frost at Siquirichi (Smn) falls on 6 May and the median first autumn frost on 21 October, which leaves a median of 166 days between them.

Frost dates and growing season at Siquirichi (Smn)
MeasureMedian, all yearsEarliest periodRecent period (1945 to 1984)Recent against earliestFitted trend
Last spring frost6 Mayn/a6 Mayn/an/a
First autumn frost21 Octobern/a21 Octobern/an/a
Growing days166 daysn/a166 daysn/an/a

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

31 years, 1945 to 1984

A day with at least 41.8 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 113.2 mm (4.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Siquirichi (Smn): the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years41.8 mm (1.6 in)
5 years57.6 mm (2.3 in)
10 years69.2 mm (2.7 in)
25 years85.5 mm (3.4 in)
50 years98.8 mm (3.9 in)Longer than the 31 years of record
100 years113.2 mm (4.5 in)Longer than the 31 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, 31 years of values from 1945 to 1984.

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: 95.8 mm (3.8 in) in 1945; 89.9 mm (3.5 in) in 1978; 72.4 mm (2.9 in) in 1970.

Download the Data

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