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Ciano Weather Records (MXN00026019)

Record envelope, standing records and threshold days for Ciano (MXN00026019), Mexico, with 47 years of record.

Key Facts for Ciano

  • Ciano (MXN00026019) is a weather station in Mexico at 27.00 latitude and -109.48 longitude, 31 m (101 ft) above sea level.
  • The station reports from 1967 to 2013, 47 years of record.
  • 1,464 records set at Ciano still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Ciano set a daily record high maximum temperature of 35.6 C (96.1 F) on 31 March 2013.

About the Station

  • Location: Mexico, 27.00 latitude, -109.48 longitude.
  • Elevation: 31 m (101 ft).
  • Period of record: 1967 to 2013, 47 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 Ciano, with 2026 drawn through them The band shows the record high and record low for each calendar day at Ciano. 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 Ciano. 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 Ciano, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan35.0 C (95.0 F)-5.6 C (21.9 F)n/an/a
Feb32.8 C (91.0 F)-2.2 C (28.0 F)n/an/a
Mar41.7 C (107.1 F)-1.1 C (30.0 F)n/an/a
Apr40.6 C (105.1 F)0.6 C (33.1 F)n/an/a
May42.8 C (109.0 F)3.9 C (39.0 F)n/an/a
Jun43.9 C (111.0 F)10.0 C (50.0 F)n/an/a
Jul45.0 C (113.0 F)13.9 C (57.0 F)n/an/a
Aug46.7 C (116.1 F)11.7 C (53.1 F)n/an/a
Sep43.9 C (111.0 F)10.0 C (50.0 F)n/an/a
Oct42.8 C (109.0 F)3.3 C (37.9 F)n/an/a
Nov40.6 C (105.1 F)0.0 C (32.0 F)n/an/a
Dec43.9 C (111.0 F)-6.1 C (21.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Ciano by the year they were set 1,464 records at Ciano still stand. 2000 holds the most, with 124. 0501001501967: 21968: 381969: 251970: 241971: 401972: 261973: 291974: 271975: 451976: 191977: 341978: 321979: 461980: 211981: 381982: 301983: 271984: 291985: 221986: 211987: 211988: 241989: 221990: 241991: 301992: 231993: 221994: 171995: 161996: 1081997: 271998: 131999: 442000: 1242001: 302002: 112003: 152004: 352005: 372006: 152007: 342008: 382009: 422010: 232011: 402012: 362013: 181967197219771982198719921997200220072012
1,464 records at Ciano still stand. 2000 holds the most, with 124.
Standing records at Ciano by the year they were set
Year setStanding records
19672
196838
196925
197024
197140
197226
197329
197427
197545
197619
197734
197832
197946
198021
198138
198230
198327
198429
198522
198621
198721
198824
198922
199024
199130
199223
199322
199417
199516
1996108
199727
199813
199944
2000124
200130
200211
200315
200435
200537
200615
200734
200838
200942
201023
201140
201236
201318

All-Time Record Progression

3 new records
When Ciano set new all-time records 3 all-time records were set at Ciano between 9 July 2000 and 4 August 2012. Each dot is a new record. Record high maximum temperatureRecord high minimum temperature9 July 2000: Record high maximum temperature 45.0 C (113.0 F)23 August 2002: Record high minimum temperature 30.0 C (86.0 F)4 August 2012: Record high maximum temperature 46.7 C (116.1 F)200020052010
3 all-time records were set at Ciano between 9 July 2000 and 4 August 2012. Each dot is a new record.
When Ciano set new all-time records
DateKindDetail
2000-07-09Record high maximum temperatureRecord high maximum temperature 45.0 C (113.0 F)
2002-08-23Record high minimum temperatureRecord high minimum temperature 30.0 C (86.0 F)
2012-08-04Record high maximum temperatureRecord high maximum temperature 46.7 C (116.1 F)

Wettest Day of Each Month

Aug: 175.8 mm (6.9 in)
Record daily precipitation for each month at Ciano The wettest day on record for each calendar month at Ciano. The most was 175.8 mm (6.9 in) on 9 August 1972. 050100150200 Jan: 58.4 mm (2.3 in), 6 January 1981 Jan Feb: 40.9 mm (1.6 in), 3 February 1983 Feb Mar: 28.4 mm (1.1 in), 2 March 1981 Mar Apr: 8.4 mm (0.33 in), 1 April 2004 Apr May: 13.2 mm (0.5 in), 17 May 1979 May Jun: 41.7 mm (1.6 in), 29 June 1976 Jun Jul: 163.8 mm (6.4 in), 26 July 1988 Jul Aug: 175.8 mm (6.9 in), 9 August 1972 Aug Sep: 149.9 mm (5.9 in), 11 September 2008 Sep Oct: 85.9 mm (3.4 in), 25 October 1972 Oct Nov: 147.3 mm (5.8 in), 2 November 1990 Nov Dec: 60.2 mm (2.4 in), 2 December 1969 Dec
The wettest day on record for each calendar month at Ciano. The most was 175.8 mm (6.9 in) on 9 August 1972.
Record daily precipitation for each month at Ciano
MonthRecord daily precipitation (mm)Date
Jan58.4 mm (2.3 in)6 January 1981
Feb40.9 mm (1.6 in)3 February 1983
Mar28.4 mm (1.1 in)2 March 1981
Apr8.4 mm (0.33 in)1 April 2004
May13.2 mm (0.5 in)17 May 1979
Jun41.7 mm (1.6 in)29 June 1976
Jul163.8 mm (6.4 in)26 July 1988
Aug175.8 mm (6.9 in)9 August 1972
Sep149.9 mm (5.9 in)11 September 2008
Oct85.9 mm (3.4 in)25 October 1972
Nov147.3 mm (5.8 in)2 November 1990
Dec60.2 mm (2.4 in)2 December 1969

Period of Record Coverage

1967 to 2013
Days with data per year at Ciano 47 years of record at Ciano, 1967 to 2013. 7 years have data for under 90 percent of days and are left out of rankings: 1967, 1968, 1973, 1986, 2010, 2012, 2013. 1967: 14 of 365 days1968: 211 of 366 days1969: 364 of 365 days1970: 365 of 365 days1971: 365 of 365 days1972: 366 of 366 days1973: 304 of 365 days1974: 365 of 365 days1975: 365 of 365 days1976: 365 of 366 days1977: 364 of 365 days1978: 365 of 365 days1979: 364 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 365 of 365 days1984: 366 of 366 days1985: 365 of 365 days1986: 303 of 365 days1987: 365 of 365 days1988: 366 of 366 days1989: 365 of 365 days1990: 365 of 365 days1991: 364 of 365 days1992: 366 of 366 days1993: 334 of 365 days1994: 364 of 365 days1995: 357 of 365 days1996: 366 of 366 days1997: 365 of 365 days1998: 335 of 365 days1999: 333 of 365 days2000: 366 of 366 days2001: 334 of 365 days2002: 364 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 334 of 365 days2006: 365 of 365 days2007: 335 of 365 days2008: 366 of 366 days2009: 365 of 365 days2010: 304 of 365 days2011: 334 of 365 days2012: 303 of 366 days2013: 144 of 365 days19701980199020002010
47 years of record at Ciano, 1967 to 2013. 7 years have data for under 90 percent of days and are left out of rankings: 1967, 1968, 1973, 1986, 2010, 2012, 2013.
Days with data per year at Ciano
YearDays with dataShare of yearComplete
1967144%No
196821158%No
1969364100%Yes
1970365100%Yes
1971365100%Yes
1972366100%Yes
197330483%No
1974365100%Yes
1975365100%Yes
1976365100%Yes
1977364100%Yes
1978365100%Yes
1979364100%Yes
1980366100%Yes
1981365100%Yes
1982365100%Yes
1983365100%Yes
1984366100%Yes
1985365100%Yes
198630383%No
1987365100%Yes
1988366100%Yes
1989365100%Yes
1990365100%Yes
1991364100%Yes
1992366100%Yes
199333492%Yes
1994364100%Yes
199535798%Yes
1996366100%Yes
1997365100%Yes
199833592%Yes
199933391%Yes
2000366100%Yes
200133492%Yes
2002364100%Yes
2003365100%Yes
2004366100%Yes
200533492%Yes
2006365100%Yes
200733592%Yes
2008366100%Yes
2009365100%Yes
201030483%No
201133492%Yes
201230383%No
201314439%No

Latest Records

20
Latest records at Ciano
DateStationRecordValueBeat old record byOld record stoodSignificance
31 March 2013Ciano, MXdaily high max35.6 C (96.1 F)1.7 C (3.1 F)8 years11 of 100 (Routine)
30 March 2013Ciano, MXdaily high max35.6 C (96.1 F)2.8 C (5.0 F)8 years14 of 100 (Routine)
15 March 2013Ciano, MXdaily high max38.3 C (100.9 F)5.5 C (9.9 F)16 years24 of 100 (Routine)
14 March 2013Ciano, MXdaily high max35.6 C (96.1 F)3.9 C (7.0 F)20 years21 of 100 (Routine)
10 March 2013Ciano, MXdaily low min1.7 C (35.1 F)2.2 C (4.0 F)38 years22 of 100 (Routine)
6 March 2013Ciano, MXdaily high max33.9 C (93.0 F)2.2 C (4.0 F)40 years22 of 100 (Routine)
3 March 2013Ciano, MXdaily high max32.2 C (90.0 F)0.5 C (0.9 F)4 years6 of 100 (Routine)
2 March 2013Ciano, MXmonthly high max41.7 C (107.1 F)1.7 C (3.1 F)0 years19 of 100 (Routine)
1 March 2013Ciano, MXmonthly high max40.0 C (104.0 F)1.1 C (2.0 F)8 years19 of 100 (Routine)
26 February 2013Ciano, MXdaily low min (Tie)1.7 C (35.1 F)tie38 years3 of 100 (Routine)
25 February 2013Ciano, MXdaily low min (Tie)1.1 C (34.0 F)tie38 years3 of 100 (Routine)
17 February 2013Ciano, MXdaily low min0.6 C (33.1 F)0.5 C (0.9 F)37 years16 of 100 (Routine)
13 February 2013Ciano, MXdaily low min0.0 C (32.0 F)2.8 C (5.0 F)16 years17 of 100 (Routine)
12 February 2013Ciano, MXdaily low min2.2 C (36.0 F)0.6 C (1.1 F)27 years14 of 100 (Routine)
4 February 2013Ciano, MXdaily high max (Tie)30.0 C (86.0 F)tie18 years2 of 100 (Routine)
3 February 2013Ciano, MXdaily high max (Tie)30.0 C (86.0 F)tie13 years1 of 100 (Routine)
1 February 2013Ciano, MXdaily high max30.6 C (87.1 F)0.6 C (1.1 F)10 years8 of 100 (Routine)
31 January 2013Ciano, MXdaily high max30.6 C (87.1 F)0.6 C (1.1 F)10 years8 of 100 (Routine)
30 January 2013Ciano, MXdaily high max (Tie)30.0 C (86.0 F)tie13 years1 of 100 (Routine)
29 January 2013Ciano, MXdaily high max30.0 C (86.0 F)1.1 C (2.0 F)17 years12 of 100 (Routine)

Climate Trend

33 complete years, 1969 to 2009
Annual mean temperature at Ciano as warming stripes, 1969 to 2009 One stripe for each of 33 complete years at Ciano, 1969 to 2009. Blue stripes are years cooler than the station's own mean of 22.1 C (71.9 F); red stripes are warmer. The coolest year was 1975, at 20.4 C (68.7 F), and the warmest was 2009, at 24.6 C (76.2 F). The strongest colour marks a difference of 2.5 C (4.5 F). 1969: 22.1 C, 0.0 C from the station mean1970: 21.7 C, -0.5 C from the station mean1971: 21.0 C, -1.1 C from the station mean1972: 21.8 C, -0.4 C from the station mean1974: 21.1 C, -1.0 C from the station mean1975: 20.4 C, -1.7 C from the station mean1976: 21.2 C, -0.9 C from the station mean1977: 21.9 C, -0.3 C from the station mean1978: 21.7 C, -0.4 C from the station mean1979: 20.9 C, -1.2 C from the station mean1980: 21.6 C, -0.5 C from the station mean1981: 21.3 C, -0.9 C from the station mean1982: 20.8 C, -1.3 C from the station mean1983: 20.7 C, -1.4 C from the station mean1984: 20.7 C, -1.4 C from the station mean1985: 20.7 C, -1.5 C from the station mean1987: 21.0 C, -1.1 C from the station mean1988: 21.2 C, -1.0 C from the station mean1989: 21.0 C, -1.1 C from the station mean1990: 21.6 C, -0.6 C from the station mean1991: 21.7 C, -0.5 C from the station mean1992: 23.5 C, +1.3 C from the station mean1994: 23.8 C, +1.6 C from the station mean1995: 23.7 C, +1.5 C from the station mean1996: 22.0 C, -0.1 C from the station mean1997: 24.0 C, +1.8 C from the station mean2000: 24.4 C, +2.2 C from the station mean2002: 23.2 C, +1.1 C from the station mean2003: 23.9 C, +1.7 C from the station mean2004: 23.9 C, +1.7 C from the station mean2006: 23.7 C, +1.6 C from the station mean2008: 24.1 C, +2.0 C from the station mean2009: 24.6 C, +2.4 C from the station mean19691975198019851990199520002005
One stripe for each of 33 complete years at Ciano, 1969 to 2009. Blue stripes are years cooler than the station's own mean of 22.1 C (71.9 F); red stripes are warmer. The coolest year was 1975, at 20.4 C (68.7 F), and the warmest was 2009, at 24.6 C (76.2 F). The strongest colour marks a difference of 2.5 C (4.5 F).
Annual mean temperature at Ciano as warming stripes, 1969 to 2009
YearAnnual mean temperatureDifference from the station mean
196922.1 C-0.01 C
197021.7 C-0.50 C
197121.0 C-1.11 C
197221.8 C-0.38 C
197421.1 C-1.02 C
197520.4 C-1.74 C
197621.2 C-0.93 C
197721.9 C-0.29 C
197821.7 C-0.43 C
197920.9 C-1.21 C
198021.6 C-0.55 C
198121.3 C-0.89 C
198220.8 C-1.31 C
198320.7 C-1.42 C
198420.7 C-1.41 C
198520.7 C-1.47 C
198721.0 C-1.15 C
198821.2 C-0.99 C
198921.0 C-1.11 C
199021.6 C-0.57 C
199121.7 C-0.49 C
199223.5 C+1.32 C
199423.8 C+1.63 C
199523.7 C+1.54 C
199622.0 C-0.14 C
199724.0 C+1.80 C
200024.4 C+2.23 C
200223.2 C+1.08 C
200323.9 C+1.74 C
200423.9 C+1.72 C
200623.7 C+1.55 C
200824.1 C+1.98 C
200924.6 C+2.43 C

The annual mean temperature here has risen by 0.9 C (0.6 to 1.1) per decade over 1969 to 2009. In Fahrenheit: 1.6 F (1.1 to 2.0) per decade. The slope is a straight line fitted to 33 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Ciano
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.9 C (0.6 to 1.1) per decade1.6 F (1.1 to 2.0) per decade1969 to 200933Rise
Mean daily maximum1.0 C (0.7 to 1.4) per decade1.9 F (1.3 to 2.4) per decade1969 to 200933Rise
Mean daily minimum0.7 C (0.4 to 1.0) per decade1.3 F (0.7 to 1.8) per decade1969 to 200933Rise

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

1967 to 2013
Yearly extremes at Ciano: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)46.7 C (116.1 F)201240.6 C (105.1 F)47
Coldest night (TNn)-6.1 C (21.0 F)19910.0 C (32.0 F)47
Wettest day (Rx1day)175.8 mm (6.9 in)197264.0 mm (2.5 in)47
Wettest five days (Rx5day)353.9 mm (13.9 in)200884.8 mm (3.3 in)47
Longest dry spell (CDD)173 days2000103 days47

Hottest day (TXx)

Hottest day (TXx) at Ciano by year The hottest day of the year at Ciano, 1967 to 2013. The record is 46.7 C (116.1 F) in 2012, marked on the chart; the median year is 40.6 C (105.1 F). 2030405019701980199020002010Record: 46.7 C (116.1 F) in 2012
The hottest day of the year at Ciano, 1967 to 2013. The record is 46.7 C (116.1 F) in 2012, marked on the chart; the median year is 40.6 C (105.1 F).
Hottest day (TXx) at Ciano by year
YearHottest day (TXx)
196725.0 C (77.0 F)
196841.1 C (106.0 F)
196939.4 C (102.9 F)
197040.0 C (104.0 F)
197140.0 C (104.0 F)
197238.3 C (100.9 F)
197338.9 C (102.0 F)
197438.9 C (102.0 F)
197541.1 C (106.0 F)
197641.7 C (107.1 F)
197740.6 C (105.1 F)
197840.0 C (104.0 F)
197940.6 C (105.1 F)
198040.6 C (105.1 F)
198140.0 C (104.0 F)
198238.9 C (102.0 F)
198340.0 C (104.0 F)
198437.8 C (100.0 F)
198537.8 C (100.0 F)
198640.0 C (104.0 F)
198738.9 C (102.0 F)
198838.9 C (102.0 F)
198938.9 C (102.0 F)
199040.0 C (104.0 F)
199140.0 C (104.0 F)
199240.6 C (105.1 F)
199342.2 C (108.0 F)
199442.8 C (109.0 F)
199542.2 C (108.0 F)
199640.6 C (105.1 F)
199743.9 C (111.0 F)
199843.9 C (111.0 F)
199943.9 C (111.0 F)
200045.0 C (113.0 F)
200142.8 C (109.0 F)
200241.7 C (107.1 F)
200341.7 C (107.1 F)
200443.9 C (111.0 F)
200541.7 C (107.1 F)
200642.8 C (109.0 F)
200743.9 C (111.0 F)
200842.8 C (109.0 F)
200943.9 C (111.0 F)
201043.9 C (111.0 F)
201143.3 C (109.9 F)
201246.7 C (116.1 F)
201341.7 C (107.1 F)

Coldest night (TNn)

Coldest night (TNn) at Ciano by year The coldest night of the year at Ciano, 1967 to 2013. The record is -6.1 C (21.0 F) in 1991, marked on the chart; the median year is 0.0 C (32.0 F). -10-5051019701980199020002010Record: -6.1 C (21.0 F) in 1991
The coldest night of the year at Ciano, 1967 to 2013. The record is -6.1 C (21.0 F) in 1991, marked on the chart; the median year is 0.0 C (32.0 F).
Coldest night (TNn) at Ciano by year
YearColdest night (TNn)
19675.6 C (42.1 F)
19680.0 C (32.0 F)
19690.6 C (33.1 F)
19700.0 C (32.0 F)
1971-5.6 C (21.9 F)
19720.0 C (32.0 F)
19730.0 C (32.0 F)
1974-1.7 C (28.9 F)
1975-0.6 C (30.9 F)
19760.0 C (32.0 F)
19770.0 C (32.0 F)
1978-2.2 C (28.0 F)
19790.0 C (32.0 F)
19800.0 C (32.0 F)
19810.0 C (32.0 F)
1982-0.6 C (30.9 F)
19830.0 C (32.0 F)
19840.6 C (33.1 F)
1985-1.1 C (30.0 F)
19860.0 C (32.0 F)
1987-4.4 C (24.1 F)
1988-4.4 C (24.1 F)
1989-4.4 C (24.1 F)
1990-2.2 C (28.0 F)
1991-6.1 C (21.0 F)
19920.6 C (33.1 F)
19932.8 C (37.0 F)
19941.1 C (34.0 F)
19952.8 C (37.0 F)
19961.1 C (34.0 F)
19970.6 C (33.1 F)
19980.6 C (33.1 F)
19992.8 C (37.0 F)
20000.6 C (33.1 F)
20010.6 C (33.1 F)
20021.7 C (35.1 F)
2003-0.6 C (30.9 F)
20040.6 C (33.1 F)
20053.9 C (39.0 F)
20060.0 C (32.0 F)
20070.0 C (32.0 F)
20081.7 C (35.1 F)
20093.3 C (37.9 F)
20103.9 C (39.0 F)
2011-2.2 C (28.0 F)
20122.8 C (37.0 F)
2013-1.7 C (28.9 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Ciano by year The wettest day of the year at Ciano, 1967 to 2013. The record is 175.8 mm (6.9 in) in 1972, marked on the chart; the median year is 64.0 mm (2.5 in). 05010015020019701980199020002010Record: 175.8 mm (6.9 in) in 1972
The wettest day of the year at Ciano, 1967 to 2013. The record is 175.8 mm (6.9 in) in 1972, marked on the chart; the median year is 64.0 mm (2.5 in).
Wettest day (Rx1day) at Ciano by year
YearWettest day (Rx1day)
19670.0 mm (0.00 in)
196824.9 mm (1.0 in)
196960.2 mm (2.4 in)
197076.5 mm (3.0 in)
1971137.2 mm (5.4 in)
1972175.8 mm (6.9 in)
197364.3 mm (2.5 in)
197431.2 mm (1.2 in)
197535.1 mm (1.4 in)
197665.3 mm (2.6 in)
197796.5 mm (3.8 in)
197859.7 mm (2.4 in)
197935.6 mm (1.4 in)
198039.9 mm (1.6 in)
198167.3 mm (2.6 in)
198248.8 mm (1.9 in)
198368.8 mm (2.7 in)
198459.9 mm (2.4 in)
1985133.1 mm (5.2 in)
198691.7 mm (3.6 in)
198772.4 mm (2.9 in)
1988163.8 mm (6.4 in)
198941.4 mm (1.6 in)
1990147.3 mm (5.8 in)
199178.2 mm (3.1 in)
199258.4 mm (2.3 in)
199347.0 mm (1.9 in)
199463.8 mm (2.5 in)
199591.9 mm (3.6 in)
1996110.0 mm (4.3 in)
199743.9 mm (1.7 in)
199865.8 mm (2.6 in)
199937.8 mm (1.5 in)
200041.9 mm (1.6 in)
2001119.9 mm (4.7 in)
200262.0 mm (2.4 in)
200346.0 mm (1.8 in)
200460.5 mm (2.4 in)
200534.8 mm (1.4 in)
200648.8 mm (1.9 in)
2007111.8 mm (4.4 in)
2008149.9 mm (5.9 in)
200980.8 mm (3.2 in)
201095.8 mm (3.8 in)
201164.0 mm (2.5 in)
201286.9 mm (3.4 in)
20133.8 mm (0.15 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Ciano by year The wettest five days of the year at Ciano, 1967 to 2013. The record is 353.9 mm (13.9 in) in 2008, marked on the chart; the median year is 84.8 mm (3.3 in). 010020030040019701980199020002010Record: 353.9 mm (13.9 in) in 2008
The wettest five days of the year at Ciano, 1967 to 2013. The record is 353.9 mm (13.9 in) in 2008, marked on the chart; the median year is 84.8 mm (3.3 in).
Wettest five days (Rx5day) at Ciano by year
YearWettest five days (Rx5day)
19670.0 mm (0.00 in)
196824.9 mm (1.0 in)
196962.0 mm (2.4 in)
1970126.8 mm (5.0 in)
1971152.9 mm (6.0 in)
1972242.1 mm (9.5 in)
197365.3 mm (2.6 in)
197461.7 mm (2.4 in)
197542.7 mm (1.7 in)
1976114.3 mm (4.5 in)
1977114.3 mm (4.5 in)
197872.6 mm (2.9 in)
197954.7 mm (2.2 in)
198085.2 mm (3.4 in)
198186.3 mm (3.4 in)
198272.7 mm (2.9 in)
1983124.7 mm (4.9 in)
198493.8 mm (3.7 in)
1985133.1 mm (5.2 in)
1986103.7 mm (4.1 in)
198777.7 mm (3.1 in)
1988305.5 mm (12.0 in)
198978.3 mm (3.1 in)
1990178.0 mm (7.0 in)
199188.9 mm (3.5 in)
199284.8 mm (3.3 in)
199381.5 mm (3.2 in)
199473.4 mm (2.9 in)
1995160.9 mm (6.3 in)
1996145.8 mm (5.7 in)
199761.7 mm (2.4 in)
1998113.6 mm (4.5 in)
199943.7 mm (1.7 in)
200077.5 mm (3.1 in)
2001173.5 mm (6.8 in)
200282.8 mm (3.3 in)
200371.2 mm (2.8 in)
2004101.4 mm (4.0 in)
200538.6 mm (1.5 in)
200664.3 mm (2.5 in)
2007139.0 mm (5.5 in)
2008353.9 mm (13.9 in)
200981.8 mm (3.2 in)
2010108.2 mm (4.3 in)
201164.5 mm (2.5 in)
201297.1 mm (3.8 in)
20133.8 mm (0.15 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Ciano by year The longest dry spell of the year at Ciano, 1967 to 2013. The record is 173 days in 2000, marked on the chart; the median year is 103 days. 05010015020019701980199020002010Record: 173 days in 2000
The longest dry spell of the year at Ciano, 1967 to 2013. The record is 173 days in 2000, marked on the chart; the median year is 103 days.
Longest dry spell (CDD) at Ciano by year
YearLongest dry spell (CDD)
196715 days
196847 days
1969100 days
1970102 days
1971172 days
1972144 days
1973119 days
197494 days
1975148 days
1976101 days
1977158 days
1978106 days
1979101 days
198096 days
198171 days
1982103 days
198390 days
1984137 days
198566 days
198680 days
1987147 days
198888 days
198998 days
1990108 days
1991122 days
1992101 days
1993123 days
1994168 days
1995129 days
1996161 days
199783 days
1998103 days
199989 days
2000173 days
2001108 days
2002156 days
200384 days
200494 days
2005102 days
200693 days
2007129 days
2008154 days
2009110 days
201097 days
201194 days
2012125 days
2013144 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

39 years, 1970 to 2011

A day with at least 65.9 mm (2.6 in) of rain is expected about once in 2 years. A day with at least 236.4 mm (9.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Ciano: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years65.9 mm (2.6 in)
5 years99.8 mm (3.9 in)
10 years126.4 mm (5.0 in)
25 years165.4 mm (6.5 in)
50 years198.8 mm (7.8 in)Longer than the 39 years of record
100 years236.4 mm (9.3 in)Longer than the 39 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, 39 years of values from 1970 to 2011.

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: 175.8 mm (6.9 in) in 1972; 163.8 mm (6.4 in) in 1988; 149.9 mm (5.9 in) in 2008.

Download the Data

  • Data for Ciano standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Ciano threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-16 (16 October 2026). Records are computed by this site and are not official.

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