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Corona Weather Records (MXN00028020)

Record envelope, standing records and threshold days for Corona (MXN00028020), Mexico, with 56 years of record.

Key Facts for Corona

  • Corona (MXN00028020) is a weather station in Mexico at 23.93 latitude and -98.93 longitude, 150 m (492 ft) above sea level.
  • The station reports from 1956 to 2011, 56 years of record.
  • 1,464 records set at Corona still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Corona set a daily record high minimum temperature of 20.0 C (68.0 F) on 15 December 2011.

About the Station

  • Location: Mexico, 23.93 latitude, -98.93 longitude.
  • Elevation: 150 m (492 ft).
  • Period of record: 1956 to 2011, 56 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 Corona, with 2026 drawn through them The band shows the record high and record low for each calendar day at Corona. 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 Corona. 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 Corona, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan36.1 C (97.0 F)-7.2 C (19.0 F)n/an/a
Feb39.4 C (102.9 F)-3.3 C (26.1 F)n/an/a
Mar43.3 C (109.9 F)0.0 C (32.0 F)n/an/a
Apr45.0 C (113.0 F)2.8 C (37.0 F)n/an/a
May45.0 C (113.0 F)5.6 C (42.1 F)n/an/a
Jun46.7 C (116.1 F)12.2 C (54.0 F)n/an/a
Jul45.6 C (114.1 F)12.8 C (55.0 F)n/an/a
Aug42.8 C (109.0 F)16.7 C (62.1 F)n/an/a
Sep41.7 C (107.1 F)10.0 C (50.0 F)n/an/a
Oct40.0 C (104.0 F)2.8 C (37.0 F)n/an/a
Nov37.8 C (100.0 F)-3.3 C (26.1 F)n/an/a
Dec38.9 C (102.0 F)-7.2 C (19.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Corona by the year they were set 1,464 records at Corona still stand. 1976 holds the most, with 55. 02040601956: 31957: 451958: 201959: 321960: 271961: 321962: 191963: 281964: 251965: 221966: 211967: 201968: 121969: 291970: 371971: 181972: 241973: 261974: 371975: 291976: 551977: 191978: 191979: 261980: 451981: 271982: 531983: 391984: 291985: 201986: 181987: 181988: 261989: 341990: 271991: 391992: 171993: 141994: 221995: 441996: 381997: 301998: 531999: 152000: 352001: 152002: 142003: 172004: 222005: 202006: 252007: 152008: 242009: 152010: 92011: 201956196219681974198019861992199820042010
1,464 records at Corona still stand. 1976 holds the most, with 55.
Standing records at Corona by the year they were set
Year setStanding records
19563
195745
195820
195932
196027
196132
196219
196328
196425
196522
196621
196720
196812
196929
197037
197118
197224
197326
197437
197529
197655
197719
197819
197926
198045
198127
198253
198339
198429
198520
198618
198718
198826
198934
199027
199139
199217
199314
199422
199544
199638
199730
199853
199915
200035
200115
200214
200317
200422
200520
200625
200715
200824
200915
20109
201120

All-Time Record Progression

3 new records
When Corona set new all-time records 3 all-time records were set at Corona between 15 June 1998 and 16 December 2009. Each dot is a new record. Record high maximum temperatureRecord daily precipitation15 June 1998: Record high maximum temperature 46.7 C (116.1 F)13 October 2006: Record daily precipitation 195.6 mm (7.7 in)16 December 2009: Record daily precipitation 214.9 mm (8.5 in)200020052010
3 all-time records were set at Corona between 15 June 1998 and 16 December 2009. Each dot is a new record.
When Corona set new all-time records
DateKindDetail
1998-06-15Record high maximum temperatureRecord high maximum temperature 46.7 C (116.1 F)
2006-10-13Record daily precipitationRecord daily precipitation 195.6 mm (7.7 in)
2009-12-16Record daily precipitationRecord daily precipitation 214.9 mm (8.5 in)

Wettest Day of Each Month

Dec: 214.9 mm (8.5 in)
Record daily precipitation for each month at Corona The wettest day on record for each calendar month at Corona. The most was 214.9 mm (8.5 in) on 16 December 2009. 0100200300 Jan: 48.8 mm (1.9 in), 30 January 1984 Jan Feb: 65.8 mm (2.6 in), 24 February 1980 Feb Mar: 64.8 mm (2.6 in), 23 March 1961 Mar Apr: 78.5 mm (3.1 in), 1 April 1971 Apr May: 119.9 mm (4.7 in), 7 May 1976 May Jun: 167.1 mm (6.6 in), 30 June 2011 Jun Jul: 116.6 mm (4.6 in), 24 July 2005 Jul Aug: 119.9 mm (4.7 in), 11 August 1995 Aug Sep: 128.8 mm (5.1 in), 2 September 1977 Sep Oct: 195.6 mm (7.7 in), 13 October 2006 Oct Nov: 51.8 mm (2.0 in), 5 November 1959 Nov Dec: 214.9 mm (8.5 in), 16 December 2009 Dec
The wettest day on record for each calendar month at Corona. The most was 214.9 mm (8.5 in) on 16 December 2009.
Record daily precipitation for each month at Corona
MonthRecord daily precipitation (mm)Date
Jan48.8 mm (1.9 in)30 January 1984
Feb65.8 mm (2.6 in)24 February 1980
Mar64.8 mm (2.6 in)23 March 1961
Apr78.5 mm (3.1 in)1 April 1971
May119.9 mm (4.7 in)7 May 1976
Jun167.1 mm (6.6 in)30 June 2011
Jul116.6 mm (4.6 in)24 July 2005
Aug119.9 mm (4.7 in)11 August 1995
Sep128.8 mm (5.1 in)2 September 1977
Oct195.6 mm (7.7 in)13 October 2006
Nov51.8 mm (2.0 in)5 November 1959
Dec214.9 mm (8.5 in)16 December 2009

Period of Record Coverage

1956 to 2011
Days with data per year at Corona 56 years of record at Corona, 1956 to 2011. 7 years have data for under 90 percent of days and are left out of rankings: 1956, 1960, 1985, 2005, 2007, 2010, 2011. 1956: 71 of 366 days1957: 360 of 365 days1958: 361 of 365 days1959: 360 of 365 days1960: 301 of 366 days1961: 361 of 365 days1962: 358 of 365 days1963: 359 of 365 days1964: 360 of 366 days1965: 332 of 365 days1966: 360 of 365 days1967: 358 of 365 days1968: 360 of 366 days1969: 357 of 365 days1970: 363 of 365 days1971: 364 of 365 days1972: 362 of 366 days1973: 361 of 365 days1974: 361 of 365 days1975: 361 of 365 days1976: 359 of 366 days1977: 361 of 365 days1978: 359 of 365 days1979: 359 of 365 days1980: 359 of 366 days1981: 362 of 365 days1982: 359 of 365 days1983: 362 of 365 days1984: 361 of 366 days1985: 271 of 365 days1986: 362 of 365 days1987: 363 of 365 days1988: 360 of 366 days1989: 363 of 365 days1990: 365 of 365 days1991: 365 of 365 days1992: 350 of 366 days1993: 347 of 365 days1994: 348 of 365 days1995: 365 of 365 days1996: 365 of 366 days1997: 364 of 365 days1998: 362 of 365 days1999: 365 of 365 days2000: 366 of 366 days2001: 364 of 365 days2002: 336 of 365 days2003: 333 of 365 days2004: 343 of 366 days2005: 316 of 365 days2006: 341 of 365 days2007: 318 of 365 days2008: 335 of 366 days2009: 337 of 365 days2010: 312 of 365 days2011: 328 of 365 days196019701980199020002010
56 years of record at Corona, 1956 to 2011. 7 years have data for under 90 percent of days and are left out of rankings: 1956, 1960, 1985, 2005, 2007, 2010, 2011.
Days with data per year at Corona
YearDays with dataShare of yearComplete
19567119%No
195736099%Yes
195836199%Yes
195936099%Yes
196030182%No
196136199%Yes
196235898%Yes
196335998%Yes
196436098%Yes
196533291%Yes
196636099%Yes
196735898%Yes
196836098%Yes
196935798%Yes
197036399%Yes
1971364100%Yes
197236299%Yes
197336199%Yes
197436199%Yes
197536199%Yes
197635998%Yes
197736199%Yes
197835998%Yes
197935998%Yes
198035998%Yes
198136299%Yes
198235998%Yes
198336299%Yes
198436199%Yes
198527174%No
198636299%Yes
198736399%Yes
198836098%Yes
198936399%Yes
1990365100%Yes
1991365100%Yes
199235096%Yes
199334795%Yes
199434895%Yes
1995365100%Yes
1996365100%Yes
1997364100%Yes
199836299%Yes
1999365100%Yes
2000366100%Yes
2001364100%Yes
200233692%Yes
200333391%Yes
200434394%Yes
200531687%No
200634193%Yes
200731887%No
200833592%Yes
200933792%Yes
201031285%No
201132890%No

Latest Records

20
Latest records at Corona
DateStationRecordValueBeat old record byOld record stoodSignificance
15 December 2011Corona, MXdaily high min20.0 C (68.0 F)2.2 C (4.0 F)45 years22 of 100 (Routine)
28 November 2011Corona, MXdaily low min (Tie)0.0 C (32.0 F)tie17 years2 of 100 (Routine)
21 November 2011Corona, MXdaily high min21.1 C (70.0 F)0.5 C (0.9 F)6 years8 of 100 (Routine)
16 November 2011Corona, MXdaily high max34.4 C (93.9 F)0.5 C (0.9 F)21 years12 of 100 (Routine)
11 November 2011Corona, MXdaily low min4.4 C (39.9 F)0.6 C (1.1 F)20 years12 of 100 (Routine)
8 November 2011Corona, MXdaily high max (Tie)35.0 C (95.0 F)tie21 years2 of 100 (Routine)
6 November 2011Corona, MXdaily high max (Tie)33.9 C (93.0 F)tie38 years4 of 100 (Routine)
9 October 2011Corona, MXdaily high max (Tie)36.7 C (98.1 F)tie13 years2 of 100 (Routine)
7 October 2011Corona, MXdaily high max (Tie)36.7 C (98.1 F)tie28 years3 of 100 (Routine)
1 October 2011Corona, MXdaily rain34.8 mm (1.4 in)14.0 mm (0.6 in)48 years26 of 100 (Routine)
27 September 2011Corona, MXdaily high max (Tie)38.9 C (102.0 F)tie5 years1 of 100 (Routine)
26 September 2011Corona, MXdaily high max40.0 C (104.0 F)2.2 C (4.0 F)5 years12 of 100 (Routine)
19 September 2011Corona, MXdaily high min (Tie)25.0 C (77.0 F)tie28 years3 of 100 (Routine)
14 September 2011Corona, MXdaily high max (Tie)38.9 C (102.0 F)tie9 years1 of 100 (Routine)
12 September 2011Corona, MXdaily low min15.6 C (60.1 F)2.2 C (4.0 F)22 years20 of 100 (Routine)
11 September 2011Corona, MXdaily low min16.1 C (61.0 F)1.7 C (3.1 F)22 years17 of 100 (Routine)
10 September 2011Corona, MXdaily low min15.0 C (59.0 F)1.7 C (3.1 F)38 years22 of 100 (Routine)
9 September 2011Corona, MXdaily low min (Tie)15.0 C (59.0 F)tie36 years4 of 100 (Routine)
8 September 2011Corona, MXdaily low min16.7 C (62.1 F)2.2 C (4.0 F)53 years30 of 100 (Routine)
12 August 2011Corona, MXdaily high min (Tie)25.6 C (78.1 F)tie24 years3 of 100 (Routine)

Climate Trend

39 complete years, 1957 to 2001
Annual mean temperature at Corona as warming stripes, 1957 to 2001 One stripe for each of 39 complete years at Corona, 1957 to 2001. Blue stripes are years cooler than the station's own mean of 23.6 C (74.5 F); red stripes are warmer. The coolest year was 1976, at 21.4 C (70.5 F), and the warmest was 1998, at 25.9 C (78.6 F). The strongest colour marks a difference of 2.3 C (4.1 F). 1957: 24.6 C, +1.0 C from the station mean1958: 23.1 C, -0.5 C from the station mean1959: 22.7 C, -0.9 C from the station mean1961: 23.1 C, -0.5 C from the station mean1962: 23.9 C, +0.3 C from the station mean1963: 23.3 C, -0.3 C from the station mean1964: 23.1 C, -0.5 C from the station mean1966: 22.1 C, -1.5 C from the station mean1967: 23.2 C, -0.4 C from the station mean1968: 22.7 C, -0.9 C from the station mean1969: 23.4 C, -0.2 C from the station mean1970: 22.1 C, -1.5 C from the station mean1971: 23.5 C, -0.1 C from the station mean1972: 23.0 C, -0.6 C from the station mean1973: 22.5 C, -1.1 C from the station mean1974: 22.8 C, -0.8 C from the station mean1975: 22.8 C, -0.8 C from the station mean1976: 21.4 C, -2.2 C from the station mean1977: 22.5 C, -1.1 C from the station mean1978: 22.5 C, -1.1 C from the station mean1979: 22.4 C, -1.2 C from the station mean1980: 24.0 C, +0.4 C from the station mean1981: 24.0 C, +0.4 C from the station mean1982: 24.3 C, +0.7 C from the station mean1983: 24.1 C, +0.5 C from the station mean1984: 23.9 C, +0.3 C from the station mean1986: 24.4 C, +0.8 C from the station mean1987: 23.5 C, -0.1 C from the station mean1988: 23.7 C, +0.1 C from the station mean1989: 23.9 C, +0.3 C from the station mean1990: 24.3 C, +0.7 C from the station mean1991: 24.1 C, +0.5 C from the station mean1995: 25.1 C, +1.5 C from the station mean1996: 25.1 C, +1.5 C from the station mean1997: 24.2 C, +0.6 C from the station mean1998: 25.9 C, +2.3 C from the station mean1999: 25.0 C, +1.4 C from the station mean2000: 25.4 C, +1.8 C from the station mean2001: 24.8 C, +1.2 C from the station mean1957196019651970197519801985199019952000
One stripe for each of 39 complete years at Corona, 1957 to 2001. Blue stripes are years cooler than the station's own mean of 23.6 C (74.5 F); red stripes are warmer. The coolest year was 1976, at 21.4 C (70.5 F), and the warmest was 1998, at 25.9 C (78.6 F). The strongest colour marks a difference of 2.3 C (4.1 F).
Annual mean temperature at Corona as warming stripes, 1957 to 2001
YearAnnual mean temperatureDifference from the station mean
195724.6 C+0.99 C
195823.1 C-0.49 C
195922.7 C-0.88 C
196123.1 C-0.50 C
196223.9 C+0.29 C
196323.3 C-0.35 C
196423.1 C-0.49 C
196622.1 C-1.47 C
196723.2 C-0.38 C
196822.7 C-0.95 C
196923.4 C-0.25 C
197022.1 C-1.50 C
197123.5 C-0.06 C
197223.0 C-0.56 C
197322.5 C-1.15 C
197422.8 C-0.77 C
197522.8 C-0.81 C
197621.4 C-2.23 C
197722.5 C-1.10 C
197822.5 C-1.08 C
197922.4 C-1.16 C
198024.0 C+0.41 C
198124.0 C+0.35 C
198224.3 C+0.67 C
198324.1 C+0.54 C
198423.9 C+0.29 C
198624.4 C+0.82 C
198723.5 C-0.07 C
198823.7 C+0.06 C
198923.9 C+0.32 C
199024.3 C+0.72 C
199124.1 C+0.47 C
199525.1 C+1.45 C
199625.1 C+1.47 C
199724.2 C+0.56 C
199825.9 C+2.27 C
199925.0 C+1.38 C
200025.4 C+1.80 C
200124.8 C+1.22 C

The annual mean temperature here has risen by 0.5 C (0.3 to 0.7) per decade over 1957 to 2001. In Fahrenheit: 0.9 F (0.6 to 1.3) per decade. The slope is a straight line fitted to 39 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Corona
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.5 C (0.3 to 0.7) per decade0.9 F (0.6 to 1.3) per decade1957 to 200139Rise
Mean daily maximum0.5 C (0.3 to 0.8) per decade1.0 F (0.5 to 1.5) per decade1957 to 200139Rise
Mean daily minimum0.5 C (0.3 to 0.7) per decade0.9 F (0.5 to 1.2) per decade1957 to 200139Rise

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

1956 to 2011
Yearly extremes at Corona: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)46.7 C (116.1 F)199842.0 C (107.5 F)56
Coldest night (TNn)-7.2 C (19.0 F)19620.0 C (32.0 F)56
Wettest day (Rx1day)214.9 mm (8.5 in)200981.6 mm (3.2 in)56
Wettest five days (Rx5day)337.1 mm (13.3 in)2011134.1 mm (5.3 in)56
Longest dry spell (CDD)86 days198246 days56

Hottest day (TXx)

Hottest day (TXx) at Corona by year The hottest day of the year at Corona, 1956 to 2011. The record is 46.7 C (116.1 F) in 1998, marked on the chart; the median year is 42.0 C (107.5 F). 37.54042.54547.5196019701980199020002010Record: 46.7 C (116.1 F) in 1998
The hottest day of the year at Corona, 1956 to 2011. The record is 46.7 C (116.1 F) in 1998, marked on the chart; the median year is 42.0 C (107.5 F).
Hottest day (TXx) at Corona by year
YearHottest day (TXx)
195637.8 C (100.0 F)
195745.6 C (114.1 F)
195845.0 C (113.0 F)
195940.6 C (105.1 F)
196042.2 C (108.0 F)
196140.0 C (104.0 F)
196242.8 C (109.0 F)
196343.3 C (109.9 F)
196440.6 C (105.1 F)
196542.2 C (108.0 F)
196640.0 C (104.0 F)
196744.4 C (111.9 F)
196838.9 C (102.0 F)
196941.7 C (107.1 F)
197042.8 C (109.0 F)
197144.4 C (111.9 F)
197240.6 C (105.1 F)
197345.0 C (113.0 F)
197442.2 C (108.0 F)
197540.6 C (105.1 F)
197638.9 C (102.0 F)
197739.4 C (102.9 F)
197842.8 C (109.0 F)
197941.1 C (106.0 F)
198041.1 C (106.0 F)
198138.9 C (102.0 F)
198240.0 C (104.0 F)
198341.1 C (106.0 F)
198444.4 C (111.9 F)
198539.4 C (102.9 F)
198640.0 C (104.0 F)
198740.0 C (104.0 F)
198841.1 C (106.0 F)
198941.7 C (107.1 F)
199040.0 C (104.0 F)
199143.9 C (111.0 F)
199240.0 C (104.0 F)
199338.9 C (102.0 F)
199440.6 C (105.1 F)
199545.0 C (113.0 F)
199642.2 C (108.0 F)
199742.8 C (109.0 F)
199846.7 C (116.1 F)
199944.4 C (111.9 F)
200042.2 C (108.0 F)
200143.3 C (109.9 F)
200242.8 C (109.0 F)
200343.3 C (109.9 F)
200442.8 C (109.0 F)
200542.2 C (108.0 F)
200642.8 C (109.0 F)
200740.0 C (104.0 F)
200843.3 C (109.9 F)
200941.7 C (107.1 F)
201041.1 C (106.0 F)
201143.3 C (109.9 F)

Coldest night (TNn)

Coldest night (TNn) at Corona by year The coldest night of the year at Corona, 1956 to 2011. The record is -7.2 C (19.0 F) in 1962, marked on the chart; the median year is 0.0 C (32.0 F). -10-505196019701980199020002010Record: -7.2 C (19.0 F) in 1962
The coldest night of the year at Corona, 1956 to 2011. The record is -7.2 C (19.0 F) in 1962, marked on the chart; the median year is 0.0 C (32.0 F).
Coldest night (TNn) at Corona by year
YearColdest night (TNn)
19560.6 C (33.1 F)
19570.0 C (32.0 F)
19581.1 C (34.0 F)
19590.0 C (32.0 F)
19600.0 C (32.0 F)
19610.0 C (32.0 F)
1962-7.2 C (19.0 F)
1963-2.2 C (28.0 F)
1964-2.2 C (28.0 F)
19650.0 C (32.0 F)
1966-1.7 C (28.9 F)
1967-2.8 C (27.0 F)
1968-0.6 C (30.9 F)
1969-1.1 C (30.0 F)
1970-3.3 C (26.1 F)
1971-1.1 C (30.0 F)
19720.0 C (32.0 F)
1973-4.4 C (24.1 F)
1974-2.2 C (28.0 F)
1975-5.0 C (23.0 F)
1976-3.3 C (26.1 F)
1977-3.3 C (26.1 F)
19780.6 C (33.1 F)
1979-2.2 C (28.0 F)
19801.1 C (34.0 F)
19811.7 C (35.1 F)
1982-2.2 C (28.0 F)
1983-2.8 C (27.0 F)
19841.1 C (34.0 F)
19851.1 C (34.0 F)
19860.6 C (33.1 F)
19870.0 C (32.0 F)
19880.6 C (33.1 F)
1989-7.2 C (19.0 F)
1990-1.1 C (30.0 F)
19912.8 C (37.0 F)
19920.6 C (33.1 F)
19930.0 C (32.0 F)
19941.1 C (34.0 F)
19953.3 C (37.9 F)
1996-1.1 C (30.0 F)
1997-2.2 C (28.0 F)
19982.2 C (36.0 F)
19990.0 C (32.0 F)
20001.1 C (34.0 F)
20010.0 C (32.0 F)
2002-1.7 C (28.9 F)
20030.0 C (32.0 F)
2004-3.3 C (26.1 F)
20053.9 C (39.0 F)
2006-1.7 C (28.9 F)
20072.8 C (37.0 F)
20080.0 C (32.0 F)
20090.6 C (33.1 F)
20100.0 C (32.0 F)
2011-1.1 C (30.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Corona by year The wettest day of the year at Corona, 1956 to 2011. The record is 214.9 mm (8.5 in) in 2009, marked on the chart; the median year is 81.6 mm (3.2 in). 0100200300196019701980199020002010Record: 214.9 mm (8.5 in) in 2009
The wettest day of the year at Corona, 1956 to 2011. The record is 214.9 mm (8.5 in) in 2009, marked on the chart; the median year is 81.6 mm (3.2 in).
Wettest day (Rx1day) at Corona by year
YearWettest day (Rx1day)
195616.3 mm (0.6 in)
195789.9 mm (3.5 in)
195878.0 mm (3.1 in)
195957.4 mm (2.3 in)
1960100.8 mm (4.0 in)
196164.8 mm (2.6 in)
196280.3 mm (3.2 in)
196392.5 mm (3.6 in)
196467.8 mm (2.7 in)
196583.8 mm (3.3 in)
196691.9 mm (3.6 in)
1967126.5 mm (5.0 in)
196887.1 mm (3.4 in)
196980.0 mm (3.1 in)
197077.7 mm (3.1 in)
1971124.5 mm (4.9 in)
1972124.0 mm (4.9 in)
197395.0 mm (3.7 in)
1974126.5 mm (5.0 in)
197596.8 mm (3.8 in)
1976119.9 mm (4.7 in)
1977128.8 mm (5.1 in)
197891.9 mm (3.6 in)
197989.2 mm (3.5 in)
198065.8 mm (2.6 in)
198173.9 mm (2.9 in)
198280.8 mm (3.2 in)
1983115.8 mm (4.6 in)
198479.8 mm (3.1 in)
198552.8 mm (2.1 in)
198683.1 mm (3.3 in)
198760.5 mm (2.4 in)
198888.4 mm (3.5 in)
198930.0 mm (1.2 in)
199078.0 mm (3.1 in)
199165.8 mm (2.6 in)
199280.3 mm (3.2 in)
199383.1 mm (3.3 in)
199467.8 mm (2.7 in)
1995119.9 mm (4.7 in)
199682.3 mm (3.2 in)
199761.0 mm (2.4 in)
199845.0 mm (1.8 in)
19998.9 mm (0.35 in)
200030.0 mm (1.2 in)
200171.6 mm (2.8 in)
200275.2 mm (3.0 in)
200354.9 mm (2.2 in)
200435.8 mm (1.4 in)
2005116.6 mm (4.6 in)
2006195.6 mm (7.7 in)
2007106.4 mm (4.2 in)
200857.4 mm (2.3 in)
2009214.9 mm (8.5 in)
201084.1 mm (3.3 in)
2011167.1 mm (6.6 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Corona by year The wettest five days of the year at Corona, 1956 to 2011. The record is 337.1 mm (13.3 in) in 2011, marked on the chart; the median year is 134.1 mm (5.3 in). 0100200300400196019701980199020002010Record: 337.1 mm (13.3 in) in 2011
The wettest five days of the year at Corona, 1956 to 2011. The record is 337.1 mm (13.3 in) in 2011, marked on the chart; the median year is 134.1 mm (5.3 in).
Wettest five days (Rx5day) at Corona by year
YearWettest five days (Rx5day)
195620.6 mm (0.8 in)
1957154.7 mm (6.1 in)
1958219.5 mm (8.6 in)
1959104.4 mm (4.1 in)
1960112.2 mm (4.4 in)
1961131.6 mm (5.2 in)
1962100.6 mm (4.0 in)
1963154.2 mm (6.1 in)
1964203.6 mm (8.0 in)
196588.9 mm (3.5 in)
1966141.5 mm (5.6 in)
1967228.6 mm (9.0 in)
1968101.1 mm (4.0 in)
1969191.2 mm (7.5 in)
1970156.4 mm (6.2 in)
1971172.5 mm (6.8 in)
1972198.2 mm (7.8 in)
1973199.4 mm (7.9 in)
1974206.5 mm (8.1 in)
1975181.5 mm (7.1 in)
1976121.5 mm (4.8 in)
1977217.0 mm (8.5 in)
1978192.8 mm (7.6 in)
1979172.6 mm (6.8 in)
198071.6 mm (2.8 in)
1981136.7 mm (5.4 in)
1982121.3 mm (4.8 in)
1983277.4 mm (10.9 in)
1984123.7 mm (4.9 in)
1985106.7 mm (4.2 in)
198696.6 mm (3.8 in)
198772.7 mm (2.9 in)
1988179.7 mm (7.1 in)
198955.1 mm (2.2 in)
1990126.8 mm (5.0 in)
1991147.0 mm (5.8 in)
1992108.5 mm (4.3 in)
1993105.8 mm (4.2 in)
1994122.2 mm (4.8 in)
1995162.3 mm (6.4 in)
1996149.1 mm (5.9 in)
199791.5 mm (3.6 in)
199856.6 mm (2.2 in)
199919.4 mm (0.8 in)
200067.9 mm (2.7 in)
200198.8 mm (3.9 in)
2002185.5 mm (7.3 in)
2003115.4 mm (4.5 in)
200466.3 mm (2.6 in)
2005229.2 mm (9.0 in)
2006205.0 mm (8.1 in)
2007183.5 mm (7.2 in)
2008110.8 mm (4.4 in)
2009243.9 mm (9.6 in)
2010118.4 mm (4.7 in)
2011337.1 mm (13.3 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Corona by year The longest dry spell of the year at Corona, 1956 to 2011. The record is 86 days in 1982, marked on the chart; the median year is 46 days. 20406080100196019701980199020002010Record: 86 days in 1982
The longest dry spell of the year at Corona, 1956 to 2011. The record is 86 days in 1982, marked on the chart; the median year is 46 days.
Longest dry spell (CDD) at Corona by year
YearLongest dry spell (CDD)
195623 days
195750 days
195835 days
195930 days
196041 days
196156 days
196271 days
196343 days
196453 days
196535 days
196668 days
196732 days
196834 days
196934 days
197064 days
197175 days
197241 days
197342 days
197446 days
197533 days
197651 days
197725 days
197828 days
197948 days
198056 days
198148 days
198286 days
198366 days
198454 days
198532 days
198640 days
198734 days
198835 days
198959 days
199037 days
199147 days
199238 days
199353 days
199434 days
199563 days
199684 days
199741 days
199848 days
199983 days
200052 days
200130 days
200245 days
200336 days
200438 days
200537 days
200649 days
200736 days
200858 days
200948 days
201086 days
201148 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

50 years, 1957 to 2011

A day with at least 80.8 mm (3.2 in) of rain is expected about once in 2 years. A day with at least 202.0 mm (8.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Corona: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years80.8 mm (3.2 in)
5 years112.9 mm (4.4 in)
10 years134.3 mm (5.3 in)
25 years161.5 mm (6.4 in)
50 years181.8 mm (7.2 in)
100 years202.0 mm (8.0 in)Longer than the 50 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, 50 years of values from 1957 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: 214.9 mm (8.5 in) in 2009; 195.6 mm (7.7 in) in 2006; 167.1 mm (6.6 in) in 2011.

Download the Data

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