Daily records
Page built 2026-10-19
Data as of 2025-12-31
Search
Built 2026-10-19 (19 October 2026)

Rayon Weather Records (MXN00026181)

Record envelope, standing records and threshold days for Rayon (MXN00026181), Mexico, with 40 years of record.

Key Facts for Rayon

  • Rayon (MXN00026181) is a weather station in Mexico at 29.70 latitude and -110.57 longitude, 560 m (1,837 ft) above sea level.
  • The station reports from 1974 to 2013, 40 years of record.
  • 1,464 records set at Rayon still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Rayon tied a daily record high maximum temperature of 41.7 C (107.1 F) on 6 June 2013.

About the Station

  • Location: Mexico, 29.70 latitude, -110.57 longitude.
  • Elevation: 560 m (1,837 ft).
  • Period of record: 1974 to 2013, 40 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 Rayon, with 2026 drawn through them The band shows the record high and record low for each calendar day at Rayon. 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 Rayon. 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 Rayon, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan35.0 C (95.0 F)-5.0 C (23.0 F)n/an/a
Feb36.7 C (98.1 F)-4.4 C (24.1 F)n/an/a
Mar38.9 C (102.0 F)0.0 C (32.0 F)n/an/a
Apr41.7 C (107.1 F)0.6 C (33.1 F)n/an/a
May43.9 C (111.0 F)3.3 C (37.9 F)n/an/a
Jun46.7 C (116.1 F)7.8 C (46.0 F)n/an/a
Jul46.7 C (116.1 F)12.2 C (54.0 F)n/an/a
Aug45.6 C (114.1 F)12.2 C (54.0 F)n/an/a
Sep43.9 C (111.0 F)8.9 C (48.0 F)n/an/a
Oct41.1 C (106.0 F)0.6 C (33.1 F)n/an/a
Nov41.7 C (107.1 F)-4.4 C (24.1 F)n/an/a
Dec38.9 C (102.0 F)-3.3 C (26.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Rayon by the year they were set 1,464 records at Rayon still stand. 1993 holds the most, with 108. 0501001501974: 341975: 461976: 361977: 411978: 491979: 461980: 521981: 381982: 661983: 661984: 531985: 421986: 451987: 431988: 561989: 251990: 391991: 191992: 91993: 1081994: 111995: 281996: 431997: 361998: 271999: 332000: 532001: 172002: 192003: 182004: 382005: 252006: 312007: 242008: 152009: 322010: 242011: 362012: 272013: 141974197819821986199019941998200220062010
1,464 records at Rayon still stand. 1993 holds the most, with 108.
Standing records at Rayon by the year they were set
Year setStanding records
197434
197546
197636
197741
197849
197946
198052
198138
198266
198366
198453
198542
198645
198743
198856
198925
199039
199119
19929
1993108
199411
199528
199643
199736
199827
199933
200053
200117
200219
200318
200438
200525
200631
200724
200815
200932
201024
201136
201227
201314

All-Time Record Progression

2 new records
When Rayon set new all-time records 2 all-time records were set at Rayon between 3 February 2011 and 14 January 2013. Each dot is a new record. Record low maximum temperatureRecord low minimum temperature3 February 2011: Record low maximum temperature 2.8 C (37.0 F)14 January 2013: Record low minimum temperature -5.0 C (23.0 F)
2 all-time records were set at Rayon between 3 February 2011 and 14 January 2013. Each dot is a new record.
When Rayon set new all-time records
DateKindDetail
2011-02-03Record low maximum temperatureRecord low maximum temperature 2.8 C (37.0 F)
2013-01-14Record low minimum temperatureRecord low minimum temperature -5.0 C (23.0 F)

Wettest Day of Each Month

Aug: 140.0 mm (5.5 in)
Record daily precipitation for each month at Rayon The wettest day on record for each calendar month at Rayon. The most was 140.0 mm (5.5 in) on 22 August 1992. 050100150 Jan: 45.0 mm (1.8 in), 9 January 1974 Jan Feb: 69.9 mm (2.8 in), 11 February 1991 Feb Mar: 32.3 mm (1.3 in), 2 March 1981 Mar Apr: 30.0 mm (1.2 in), 1 April 2004 Apr May: 20.8 mm (0.8 in), 16 May 1984 May Jun: 63.5 mm (2.5 in), 29 June 2000 Jun Jul: 129.8 mm (5.1 in), 13 July 1996 Jul Aug: 140.0 mm (5.5 in), 22 August 1992 Aug Sep: 114.8 mm (4.5 in), 16 September 2007 Sep Oct: 124.0 mm (4.9 in), 22 October 2000 Oct Nov: 116.3 mm (4.6 in), 11 November 1994 Nov Dec: 91.9 mm (3.6 in), 5 December 1994 Dec
The wettest day on record for each calendar month at Rayon. The most was 140.0 mm (5.5 in) on 22 August 1992.
Record daily precipitation for each month at Rayon
MonthRecord daily precipitation (mm)Date
Jan45.0 mm (1.8 in)9 January 1974
Feb69.9 mm (2.8 in)11 February 1991
Mar32.3 mm (1.3 in)2 March 1981
Apr30.0 mm (1.2 in)1 April 2004
May20.8 mm (0.8 in)16 May 1984
Jun63.5 mm (2.5 in)29 June 2000
Jul129.8 mm (5.1 in)13 July 1996
Aug140.0 mm (5.5 in)22 August 1992
Sep114.8 mm (4.5 in)16 September 2007
Oct124.0 mm (4.9 in)22 October 2000
Nov116.3 mm (4.6 in)11 November 1994
Dec91.9 mm (3.6 in)5 December 1994

Period of Record Coverage

1974 to 2013
Days with data per year at Rayon 40 years of record at Rayon, 1974 to 2013. 9 years have data for under 90 percent of days and are left out of rankings: 1986, 1987, 1988, 1989, 1991, 1992, 2001, 2002 and others. 1974: 365 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 365 of 365 days1978: 364 of 365 days1979: 365 of 365 days1980: 334 of 366 days1981: 362 of 365 days1982: 365 of 365 days1983: 364 of 365 days1984: 366 of 366 days1985: 333 of 365 days1986: 304 of 365 days1987: 212 of 365 days1988: 271 of 366 days1989: 238 of 365 days1990: 365 of 365 days1991: 149 of 365 days1992: 153 of 366 days1993: 345 of 365 days1994: 337 of 365 days1995: 348 of 365 days1996: 366 of 366 days1997: 364 of 365 days1998: 365 of 365 days1999: 357 of 365 days2000: 365 of 366 days2001: 270 of 365 days2002: 303 of 365 days2003: 365 of 365 days2004: 362 of 366 days2005: 362 of 365 days2006: 362 of 365 days2007: 353 of 365 days2008: 357 of 366 days2009: 365 of 365 days2010: 365 of 365 days2011: 364 of 365 days2012: 365 of 366 days2013: 175 of 365 days19751980198519901995200020052010
40 years of record at Rayon, 1974 to 2013. 9 years have data for under 90 percent of days and are left out of rankings: 1986, 1987, 1988, 1989, 1991, 1992, 2001, 2002 and others.
Days with data per year at Rayon
YearDays with dataShare of yearComplete
1974365100%Yes
1975365100%Yes
1976366100%Yes
1977365100%Yes
1978364100%Yes
1979365100%Yes
198033491%Yes
198136299%Yes
1982365100%Yes
1983364100%Yes
1984366100%Yes
198533391%Yes
198630483%No
198721258%No
198827174%No
198923865%No
1990365100%Yes
199114941%No
199215342%No
199334595%Yes
199433792%Yes
199534895%Yes
1996366100%Yes
1997364100%Yes
1998365100%Yes
199935798%Yes
2000365100%Yes
200127074%No
200230383%No
2003365100%Yes
200436299%Yes
200536299%Yes
200636299%Yes
200735397%Yes
200835798%Yes
2009365100%Yes
2010365100%Yes
2011364100%Yes
2012365100%Yes
201317548%No

Latest Records

20
Latest records at Rayon
DateStationRecordValueBeat old record byOld record stoodSignificance
6 June 2013Rayon, MXdaily high max (Tie)41.7 C (107.1 F)tie18 years2 of 100 (Routine)
4 May 2013Rayon, MXdaily high min (Tie)15.0 C (59.0 F)tie36 years3 of 100 (Routine)
3 May 2013Rayon, MXdaily high min (Tie)18.9 C (66.0 F)tie2 years1 of 100 (Routine)
10 April 2013Rayon, MXdaily low min (Tie)3.9 C (39.0 F)tie30 years3 of 100 (Routine)
9 April 2013Rayon, MXdaily rain0.3 mm (0.01 in)0.3 mm (0.01 in)39 years15 of 100 (Routine)
14 March 2013Rayon, MXdaily high max35.6 C (96.1 F)1.7 C (3.1 F)2 years7 of 100 (Routine)
13 March 2013Rayon, MXdaily high max (Tie)33.9 C (93.0 F)tie16 years2 of 100 (Routine)
9 March 2013Rayon, MXdaily low max17.8 C (64.0 F)2.2 C (4.0 F)39 years19 of 100 (Routine)
8 March 2013Rayon, MXdaily low max (Tie)20.0 C (68.0 F)tie3 years1 of 100 (Routine)
26 February 2013Rayon, MXdaily low min (Tie)-1.1 C (30.0 F)tie2 years1 of 100 (Routine)
25 February 2013Rayon, MXdaily low min-3.3 C (26.1 F)3.3 C (5.9 F)26 years22 of 100 (Routine)
22 February 2013Rayon, MXdaily low min-2.2 C (28.0 F)1.1 C (2.0 F)2 years7 of 100 (Routine)
21 February 2013Rayon, MXdaily low min-1.1 C (30.0 F)1.1 C (2.0 F)26 years14 of 100 (Routine)
20 February 2013Rayon, MXdaily low max15.0 C (59.0 F)2.8 C (5.0 F)33 years18 of 100 (Routine)
12 February 2013Rayon, MXdaily low min-2.2 C (28.0 F)1.1 C (2.0 F)9 years9 of 100 (Routine)
11 February 2013Rayon, MXdaily low min (Tie)-2.2 C (28.0 F)tie9 years1 of 100 (Routine)
9 February 2013Rayon, MXdaily low max (Tie)11.7 C (53.1 F)tie27 years3 of 100 (Routine)
23 January 2013Rayon, MXdaily high max (Tie)30.0 C (86.0 F)tie27 years3 of 100 (Routine)
15 January 2013Rayon, MXdaily low max12.8 C (55.0 F)3.9 C (7.0 F)6 years13 of 100 (Routine)
15 January 2013Rayon, MXall-time low min (Tie)-5.0 C (23.0 F)tie0 years6 of 100 (Routine)

Climate Trend

27 complete years, 1974 to 2012
Annual mean temperature at Rayon as warming stripes, 1974 to 2012 One stripe for each of 27 complete years at Rayon, 1974 to 2012. Blue stripes are years cooler than the station's own mean of 21.0 C (69.9 F); red stripes are warmer. The coolest year was 1983, at 19.5 C (67.1 F), and the warmest was 1995, at 22.2 C (71.9 F). The strongest colour marks a difference of 1.6 C (2.9 F). 1974: 22.1 C, +1.1 C from the station mean1975: 21.2 C, +0.1 C from the station mean1976: 20.9 C, -0.2 C from the station mean1977: 21.2 C, +0.2 C from the station mean1978: 20.8 C, -0.3 C from the station mean1979: 20.5 C, -0.6 C from the station mean1981: 20.9 C, -0.1 C from the station mean1982: 20.1 C, -0.9 C from the station mean1983: 19.5 C, -1.6 C from the station mean1984: 20.0 C, -1.0 C from the station mean1990: 20.8 C, -0.3 C from the station mean1995: 22.2 C, +1.1 C from the station mean1996: 22.1 C, +1.1 C from the station mean1997: 21.5 C, +0.5 C from the station mean1998: 21.6 C, +0.6 C from the station mean1999: 21.6 C, +0.5 C from the station mean2000: 21.2 C, +0.2 C from the station mean2003: 21.0 C, -0.1 C from the station mean2004: 20.3 C, -0.7 C from the station mean2005: 21.3 C, +0.2 C from the station mean2006: 21.2 C, +0.1 C from the station mean2007: 21.0 C, -0.1 C from the station mean2008: 21.0 C, 0.0 C from the station mean2009: 21.3 C, +0.3 C from the station mean2010: 20.8 C, -0.2 C from the station mean2011: 20.9 C, -0.2 C from the station mean2012: 21.4 C, +0.3 C from the station mean19741980198519901995200020052010
One stripe for each of 27 complete years at Rayon, 1974 to 2012. Blue stripes are years cooler than the station's own mean of 21.0 C (69.9 F); red stripes are warmer. The coolest year was 1983, at 19.5 C (67.1 F), and the warmest was 1995, at 22.2 C (71.9 F). The strongest colour marks a difference of 1.6 C (2.9 F).
Annual mean temperature at Rayon as warming stripes, 1974 to 2012
YearAnnual mean temperatureDifference from the station mean
197422.1 C+1.06 C
197521.2 C+0.11 C
197620.9 C-0.18 C
197721.2 C+0.16 C
197820.8 C-0.26 C
197920.5 C-0.56 C
198120.9 C-0.15 C
198220.1 C-0.95 C
198319.5 C-1.57 C
198420.0 C-1.03 C
199020.8 C-0.26 C
199522.2 C+1.11 C
199622.1 C+1.09 C
199721.5 C+0.48 C
199821.6 C+0.56 C
199921.6 C+0.51 C
200021.2 C+0.18 C
200321.0 C-0.09 C
200420.3 C-0.71 C
200521.3 C+0.24 C
200621.2 C+0.11 C
200721.0 C-0.08 C
200821.0 C-0.01 C
200921.3 C+0.26 C
201020.8 C-0.25 C
201120.9 C-0.17 C
201221.4 C+0.30 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

1974 to 2013
Yearly extremes at Rayon: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)46.7 C (116.1 F)198743.6 C (110.5 F)40
Coldest night (TNn)-5.0 C (23.0 F)2013-1.1 C (30.0 F)40
Wettest day (Rx1day)140.0 mm (5.5 in)199262.5 mm (2.5 in)40
Wettest five days (Rx5day)226.5 mm (8.9 in)200084.6 mm (3.3 in)40
Longest dry spell (CDD)182 days198287 days40

Hottest day (TXx)

Hottest day (TXx) at Rayon by year The hottest day of the year at Rayon, 1974 to 2013. The record is 46.7 C (116.1 F) in 1987, marked on the chart; the median year is 43.6 C (110.5 F). 3840424446481980199020002010Record: 46.7 C (116.1 F) in 1987
The hottest day of the year at Rayon, 1974 to 2013. The record is 46.7 C (116.1 F) in 1987, marked on the chart; the median year is 43.6 C (110.5 F).
Hottest day (TXx) at Rayon by year
YearHottest day (TXx)
197443.9 C (111.0 F)
197543.9 C (111.0 F)
197645.6 C (114.1 F)
197741.7 C (107.1 F)
197842.8 C (109.0 F)
197943.3 C (109.9 F)
198043.3 C (109.9 F)
198141.1 C (106.0 F)
198241.7 C (107.1 F)
198342.2 C (108.0 F)
198443.9 C (111.0 F)
198542.8 C (109.0 F)
198641.7 C (107.1 F)
198746.7 C (116.1 F)
198843.9 C (111.0 F)
198941.7 C (107.1 F)
199045.0 C (113.0 F)
199145.0 C (113.0 F)
199238.9 C (102.0 F)
199343.9 C (111.0 F)
199443.3 C (109.9 F)
199544.4 C (111.9 F)
199643.9 C (111.0 F)
199743.9 C (111.0 F)
199845.6 C (114.1 F)
199941.7 C (107.1 F)
200043.3 C (109.9 F)
200141.1 C (106.0 F)
200243.9 C (111.0 F)
200342.8 C (109.0 F)
200441.7 C (107.1 F)
200543.9 C (111.0 F)
200643.9 C (111.0 F)
200743.3 C (109.9 F)
200843.9 C (111.0 F)
200941.7 C (107.1 F)
201045.0 C (113.0 F)
201145.0 C (113.0 F)
201243.9 C (111.0 F)
201342.8 C (109.0 F)

Coldest night (TNn)

Coldest night (TNn) at Rayon by year The coldest night of the year at Rayon, 1974 to 2013. The record is -5.0 C (23.0 F) in 2013, marked on the chart; the median year is -1.1 C (30.0 F). -6-4-20241980199020002010Record: -5.0 C (23.0 F) in 2013
The coldest night of the year at Rayon, 1974 to 2013. The record is -5.0 C (23.0 F) in 2013, marked on the chart; the median year is -1.1 C (30.0 F).
Coldest night (TNn) at Rayon by year
YearColdest night (TNn)
1974-1.1 C (30.0 F)
1975-1.1 C (30.0 F)
19760.0 C (32.0 F)
19770.0 C (32.0 F)
19780.6 C (33.1 F)
19790.0 C (32.0 F)
19800.6 C (33.1 F)
19810.0 C (32.0 F)
1982-2.2 C (28.0 F)
1983-1.1 C (30.0 F)
1984-1.7 C (28.9 F)
19850.0 C (32.0 F)
19860.6 C (33.1 F)
19870.0 C (32.0 F)
19880.6 C (33.1 F)
19890.6 C (33.1 F)
19900.6 C (33.1 F)
19912.8 C (37.0 F)
19922.8 C (37.0 F)
19931.7 C (35.1 F)
19942.2 C (36.0 F)
19951.1 C (34.0 F)
19960.0 C (32.0 F)
1997-1.1 C (30.0 F)
1998-1.1 C (30.0 F)
1999-3.3 C (26.1 F)
2000-3.3 C (26.1 F)
2001-1.7 C (28.9 F)
2002-2.8 C (27.0 F)
2003-3.3 C (26.1 F)
2004-4.4 C (24.1 F)
2005-2.2 C (28.0 F)
2006-3.3 C (26.1 F)
2007-4.4 C (24.1 F)
2008-1.7 C (28.9 F)
2009-3.3 C (26.1 F)
2010-4.4 C (24.1 F)
2011-4.4 C (24.1 F)
2012-2.2 C (28.0 F)
2013-5.0 C (23.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Rayon by year The wettest day of the year at Rayon, 1974 to 2013. The record is 140.0 mm (5.5 in) in 1992, marked on the chart; the median year is 62.5 mm (2.5 in). 0501001501980199020002010Record: 140.0 mm (5.5 in) in 1992
The wettest day of the year at Rayon, 1974 to 2013. The record is 140.0 mm (5.5 in) in 1992, marked on the chart; the median year is 62.5 mm (2.5 in).
Wettest day (Rx1day) at Rayon by year
YearWettest day (Rx1day)
197445.0 mm (1.8 in)
197536.3 mm (1.4 in)
197623.9 mm (0.9 in)
197768.8 mm (2.7 in)
197859.9 mm (2.4 in)
197965.5 mm (2.6 in)
198058.4 mm (2.3 in)
198148.8 mm (1.9 in)
198259.9 mm (2.4 in)
198390.7 mm (3.6 in)
198480.8 mm (3.2 in)
198542.4 mm (1.7 in)
198677.0 mm (3.0 in)
198769.9 mm (2.8 in)
198867.1 mm (2.6 in)
198932.3 mm (1.3 in)
199079.8 mm (3.1 in)
199169.9 mm (2.8 in)
1992140.0 mm (5.5 in)
199334.5 mm (1.4 in)
1994116.3 mm (4.6 in)
199535.6 mm (1.4 in)
1996129.8 mm (5.1 in)
199747.8 mm (1.9 in)
199862.0 mm (2.4 in)
199954.9 mm (2.2 in)
2000124.0 mm (4.9 in)
200179.8 mm (3.1 in)
200255.1 mm (2.2 in)
200366.8 mm (2.6 in)
200461.0 mm (2.4 in)
200558.9 mm (2.3 in)
200650.3 mm (2.0 in)
2007114.8 mm (4.5 in)
200897.3 mm (3.8 in)
200931.0 mm (1.2 in)
201090.7 mm (3.6 in)
201163.0 mm (2.5 in)
201279.8 mm (3.1 in)
20132.8 mm (0.11 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Rayon by year The wettest five days of the year at Rayon, 1974 to 2013. The record is 226.5 mm (8.9 in) in 2000, marked on the chart; the median year is 84.6 mm (3.3 in). 01002003001980199020002010Record: 226.5 mm (8.9 in) in 2000
The wettest five days of the year at Rayon, 1974 to 2013. The record is 226.5 mm (8.9 in) in 2000, marked on the chart; the median year is 84.6 mm (3.3 in).
Wettest five days (Rx5day) at Rayon by year
YearWettest five days (Rx5day)
197446.0 mm (1.8 in)
197557.4 mm (2.3 in)
197643.2 mm (1.7 in)
197769.1 mm (2.7 in)
197886.2 mm (3.4 in)
197989.3 mm (3.5 in)
198059.7 mm (2.4 in)
198172.7 mm (2.9 in)
198276.0 mm (3.0 in)
1983137.4 mm (5.4 in)
198497.0 mm (3.8 in)
198554.9 mm (2.2 in)
1986163.8 mm (6.4 in)
198791.7 mm (3.6 in)
198899.2 mm (3.9 in)
198941.4 mm (1.6 in)
1990160.6 mm (6.3 in)
199169.9 mm (2.8 in)
1992195.6 mm (7.7 in)
199355.4 mm (2.2 in)
1994177.3 mm (7.0 in)
199551.8 mm (2.0 in)
1996135.4 mm (5.3 in)
199781.5 mm (3.2 in)
1998109.0 mm (4.3 in)
199985.6 mm (3.4 in)
2000226.5 mm (8.9 in)
200181.6 mm (3.2 in)
200299.1 mm (3.9 in)
200381.3 mm (3.2 in)
200480.0 mm (3.1 in)
200579.5 mm (3.1 in)
200692.5 mm (3.6 in)
2007158.4 mm (6.2 in)
2008140.3 mm (5.5 in)
200973.0 mm (2.9 in)
2010135.5 mm (5.3 in)
201183.6 mm (3.3 in)
201293.0 mm (3.7 in)
20137.6 mm (0.30 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Rayon by year The longest dry spell of the year at Rayon, 1974 to 2013. The record is 182 days in 1982, marked on the chart; the median year is 87 days. 0501001502001980199020002010Record: 182 days in 1982
The longest dry spell of the year at Rayon, 1974 to 2013. The record is 182 days in 1982, marked on the chart; the median year is 87 days.
Longest dry spell (CDD) at Rayon by year
YearLongest dry spell (CDD)
1974164 days
1975112 days
197645 days
197757 days
1978116 days
1979111 days
1980129 days
198154 days
1982182 days
198389 days
198491 days
198563 days
198672 days
198767 days
198846 days
198953 days
199093 days
199140 days
199238 days
199376 days
199490 days
199588 days
1996123 days
199761 days
199875 days
1999100 days
200091 days
200176 days
200270 days
200388 days
200456 days
200558 days
200677 days
200798 days
2008132 days
200980 days
201086 days
2011121 days
2012125 days
2013130 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

31 years, 1974 to 2012

A day with at least 62.2 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 158.8 mm (6.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Rayon: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years62.2 mm (2.4 in)
5 years87.7 mm (3.5 in)
10 years104.7 mm (4.1 in)
25 years126.4 mm (5.0 in)
50 years142.6 mm (5.6 in)Longer than the 31 years of record
100 years158.8 mm (6.3 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 1974 to 2012.

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: 129.8 mm (5.1 in) in 1996; 124.0 mm (4.9 in) in 2000; 116.3 mm (4.6 in) in 1994.

Download the Data

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