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Boquillas Rs Weather Records (USC00410950)

Record envelope, standing records and threshold days for Boquillas Rs (USC00410950), Texas, United States, with 97 years of record.

Key Facts for Boquillas Rs

  • Boquillas Rs (USC00410950) is a weather station in Texas, United States at 29.19 latitude and -102.96 longitude, 566 m (1,858 ft) above sea level.
  • The station reports from 1910 to 2006, 97 years of record.
  • 1,464 records set at Boquillas Rs still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Boquillas Rs set a daily record low minimum temperature of 3.3 C (37.9 F) on 29 October 2006.

About the Station

  • Location: Texas, United States, 29.19 latitude, -102.96 longitude.
  • Elevation: 566 m (1,858 ft).
  • Period of record: 1910 to 2006, 97 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Boquillas Rs, with 2026 drawn through them The band shows the record high and record low for each calendar day at Boquillas Rs. 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 Boquillas Rs. 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 Boquillas Rs, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan33.3 C (91.9 F)-13.9 C (7.0 F)n/an/a
Feb37.2 C (99.0 F)-10.6 C (12.9 F)n/an/a
Mar39.4 C (102.9 F)-10.0 C (14.0 F)n/an/a
Apr44.4 C (111.9 F)-1.7 C (28.9 F)n/an/a
May46.7 C (116.1 F)6.7 C (44.1 F)n/an/a
Jun47.2 C (117.0 F)12.8 C (55.0 F)n/an/a
Jul46.7 C (116.1 F)13.9 C (57.0 F)n/an/a
Aug46.1 C (115.0 F)15.6 C (60.1 F)n/an/a
Sep46.1 C (115.0 F)4.4 C (39.9 F)n/an/a
Oct40.6 C (105.1 F)-4.4 C (24.1 F)n/an/a
Nov37.2 C (99.0 F)-8.9 C (16.0 F)n/an/a
Dec32.2 C (90.0 F)-15.6 C (3.9 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Boquillas Rs by the year they were set 1,464 records at Boquillas Rs still stand. 1985 holds the most, with 68. 0204060801910: 581949: 181952: 531953: 591954: 471955: 81964: 191965: 81966: 31967: 291970: 81971: 11972: 81974: 11977: 41979: 331980: 641981: 371982: 301983: 401984: 481985: 681986: 421987: 481988: 261989: 661990: 511991: 361992: 421993: 301994: 281995: 371996: 621997: 441998: 441999: 272000: 372001: 262002: 492003: 432004: 332005: 332006: 16191019551970197919841989199419992004
1,464 records at Boquillas Rs still stand. 1985 holds the most, with 68.
Standing records at Boquillas Rs by the year they were set
Year setStanding records
191058
194918
195253
195359
195447
19558
196419
19658
19663
196729
19708
19711
19728
19741
19774
197933
198064
198137
198230
198340
198448
198568
198642
198748
198826
198966
199051
199136
199242
199330
199428
199537
199662
199744
199844
199927
200037
200126
200249
200343
200433
200533
200616

All-Time Record Progression

1 new records
When Boquillas Rs set new all-time records 1 all-time records were set at Boquillas Rs between 13 January 1985 and 13 January 1985. Each dot is a new record. Record snow depth13 January 1985: Record snow depth 7.6 cm (3.0 in)1985
1 all-time records were set at Boquillas Rs between 13 January 1985 and 13 January 1985. Each dot is a new record.
When Boquillas Rs set new all-time records
DateKindDetail
1985-01-13Record snow depthRecord snow depth 7.6 cm (3.0 in)

Wettest Day of Each Month

Jun: 68.3 mm (2.7 in)
Record daily precipitation for each month at Boquillas Rs The wettest day on record for each calendar month at Boquillas Rs. The most was 68.3 mm (2.7 in) on 21 June 1966. 020406080 Jan: 25.9 mm (1.0 in), 12 January 1982 Jan Feb: 28.2 mm (1.1 in), 22 February 1970 Feb Mar: 14.0 mm (0.6 in), 28 March 1999 Mar Apr: 44.7 mm (1.8 in), 23 April 1990 Apr May: 46.5 mm (1.8 in), 23 May 1987 May Jun: 68.3 mm (2.7 in), 21 June 1966 Jun Jul: 46.7 mm (1.8 in), 25 July 1990 Jul Aug: 52.3 mm (2.1 in), 17 August 1980 Aug Sep: 40.6 mm (1.6 in), 16 September 1974 Sep Oct: 54.4 mm (2.1 in), 20 October 1983 Oct Nov: 44.5 mm (1.8 in), 16 November 2004 Nov Dec: 29.5 mm (1.2 in), 20 December 1991 Dec
The wettest day on record for each calendar month at Boquillas Rs. The most was 68.3 mm (2.7 in) on 21 June 1966.
Record daily precipitation for each month at Boquillas Rs
MonthRecord daily precipitation (mm)Date
Jan25.9 mm (1.0 in)12 January 1982
Feb28.2 mm (1.1 in)22 February 1970
Mar14.0 mm (0.6 in)28 March 1999
Apr44.7 mm (1.8 in)23 April 1990
May46.5 mm (1.8 in)23 May 1987
Jun68.3 mm (2.7 in)21 June 1966
Jul46.7 mm (1.8 in)25 July 1990
Aug52.3 mm (2.1 in)17 August 1980
Sep40.6 mm (1.6 in)16 September 1974
Oct54.4 mm (2.1 in)20 October 1983
Nov44.5 mm (1.8 in)16 November 2004
Dec29.5 mm (1.2 in)20 December 1991

Period of Record Coverage

1910 to 2006
Days with data per year at Boquillas Rs 44 years of record at Boquillas Rs, 1910 to 2006. 24 years have data for under 90 percent of days and are left out of rankings: 1910, 1949, 1952, 1953, 1954, 1955, 1964, 1965 and others. 1910: 108 of 365 days1949: 129 of 365 days1952: 304 of 366 days1953: 220 of 365 days1954: 296 of 365 days1955: 48 of 365 days1964: 128 of 366 days1965: 88 of 365 days1966: 60 of 365 days1967: 181 of 365 days1970: 30 of 365 days1971: 29 of 365 days1972: 90 of 366 days1974: 30 of 365 days1977: 31 of 365 days1978: 31 of 365 days1979: 267 of 365 days1980: 356 of 366 days1981: 359 of 365 days1982: 361 of 365 days1983: 365 of 365 days1984: 365 of 366 days1985: 364 of 365 days1986: 361 of 365 days1987: 325 of 365 days1988: 234 of 366 days1989: 351 of 365 days1990: 359 of 365 days1991: 364 of 365 days1992: 366 of 366 days1993: 364 of 365 days1994: 360 of 365 days1995: 344 of 365 days1996: 320 of 366 days1997: 315 of 365 days1998: 334 of 365 days1999: 345 of 365 days2000: 354 of 366 days2001: 352 of 365 days2002: 327 of 365 days2003: 297 of 365 days2004: 361 of 366 days2005: 361 of 365 days2006: 209 of 365 days19101970198019902000
44 years of record at Boquillas Rs, 1910 to 2006. 24 years have data for under 90 percent of days and are left out of rankings: 1910, 1949, 1952, 1953, 1954, 1955, 1964, 1965 and others.
Days with data per year at Boquillas Rs
YearDays with dataShare of yearComplete
191010830%No
194912935%No
195230483%No
195322060%No
195429681%No
19554813%No
196412835%No
19658824%No
19666016%No
196718150%No
1970308%No
1971298%No
19729025%No
1974308%No
1977318%No
1978318%No
197926773%No
198035697%Yes
198135998%Yes
198236199%Yes
1983365100%Yes
1984365100%Yes
1985364100%Yes
198636199%Yes
198732589%No
198823464%No
198935196%Yes
199035998%Yes
1991364100%Yes
1992366100%Yes
1993364100%Yes
199436099%Yes
199534494%Yes
199632087%No
199731586%No
199833492%Yes
199934595%Yes
200035497%Yes
200135296%Yes
200232790%No
200329781%No
200436199%Yes
200536199%Yes
200620957%No

Latest Records

20
Latest records at Boquillas Rs
DateStationRecordValueBeat old record byOld record stoodSignificance
29 October 2006Boquillas Rs, USdaily low min3.3 C (37.9 F)2.3 C (4.1 F)53 years29 of 100 (Routine)
25 October 2006Boquillas Rs, USdaily rain16.5 mm (0.6 in)7.6 mm (0.30 in)1 year16 of 100 (Routine)
16 October 2006Boquillas Rs, USdaily high min20.0 C (68.0 F)1.1 C (2.0 F)24 years18 of 100 (Routine)
15 October 2006Boquillas Rs, USdaily high min (Tie)18.3 C (64.9 F)tie20 years3 of 100 (Routine)
23 September 2006Boquillas Rs, USdaily high max (Tie)39.4 C (102.9 F)tie52 years6 of 100 (Routine)
17 September 2006Boquillas Rs, USdaily high min (Tie)23.3 C (73.9 F)tie8 years2 of 100 (Routine)
16 September 2006Boquillas Rs, USdaily high min (Tie)23.3 C (73.9 F)tie8 years2 of 100 (Routine)
9 September 2006Boquillas Rs, USdaily rain3.6 mm (0.14 in)1.1 mm (0.04 in)48 years20 of 100 (Routine)
9 September 2006Boquillas Rs, USdaily low max25.0 C (77.0 F)2.8 C (5.0 F)20 years21 of 100 (Routine)
6 September 2006Boquillas Rs, USdaily low max24.4 C (75.9 F)5.0 C (9.0 F)39 years31 of 100 (Routine)
30 June 2006Boquillas Rs, USdaily low max33.3 C (91.9 F)1.1 C (2.0 F)21 years18 of 100 (Routine)
25 June 2006Boquillas Rs, USdaily low max32.8 C (91.0 F)0.5 C (0.9 F)20 years16 of 100 (Routine)
12 June 2006Boquillas Rs, USdaily high max44.4 C (111.9 F)1.1 C (2.0 F)23 years18 of 100 (Routine)
3 May 2006Boquillas Rs, USdaily high min22.8 C (73.0 F)2.8 C (5.0 F)20 years22 of 100 (Routine)
24 April 2006Boquillas Rs, USdaily high min20.0 C (68.0 F)0.6 C (1.1 F)4 years11 of 100 (Routine)
18 April 2006Boquillas Rs, USdaily high max40.6 C (105.1 F)0.6 C (1.1 F)19 years15 of 100 (Routine)
16 April 2006Boquillas Rs, USdaily high max42.8 C (109.0 F)2.8 C (5.0 F)51 years29 of 100 (Routine)
15 April 2006Boquillas Rs, USdaily high max (Tie)40.0 C (104.0 F)tie51 years6 of 100 (Routine)
1 April 2006Boquillas Rs, USdaily high max (Tie)35.6 C (96.1 F)tie23 years3 of 100 (Routine)
20 February 2006Boquillas Rs, USdaily low max14.4 C (57.9 F)1.2 C (2.2 F)22 years16 of 100 (Routine)

Climate Trend

19 complete years, 1980 to 2005
Annual mean temperature at Boquillas Rs as warming stripes, 1980 to 2005 One stripe for each of 19 complete years at Boquillas Rs, 1980 to 2005. Blue stripes are years cooler than the station's own mean of 21.5 C (70.6 F); red stripes are warmer. The coolest year was 1992, at 21.0 C (69.7 F), and the warmest was 1998, at 22.2 C (71.9 F). The strongest colour marks a difference of 0.8 C (1.4 F). 1980: 21.9 C, +0.4 C from the station mean1981: 21.6 C, +0.2 C from the station mean1982: 21.3 C, -0.1 C from the station mean1983: 21.4 C, 0.0 C from the station mean1984: 21.1 C, -0.4 C from the station mean1985: 21.4 C, -0.1 C from the station mean1986: 21.7 C, +0.2 C from the station mean1989: 21.3 C, -0.2 C from the station mean1990: 21.4 C, -0.1 C from the station mean1991: 21.0 C, -0.4 C from the station mean1992: 21.0 C, -0.5 C from the station mean1993: 21.1 C, -0.4 C from the station mean1994: 21.9 C, +0.4 C from the station mean1995: 21.6 C, +0.2 C from the station mean1998: 22.2 C, +0.7 C from the station mean2000: 21.7 C, +0.3 C from the station mean2001: 21.7 C, +0.3 C from the station mean2004: 21.1 C, -0.4 C from the station mean2005: 21.5 C, 0.0 C from the station mean198019851990199520002005
One stripe for each of 19 complete years at Boquillas Rs, 1980 to 2005. Blue stripes are years cooler than the station's own mean of 21.5 C (70.6 F); red stripes are warmer. The coolest year was 1992, at 21.0 C (69.7 F), and the warmest was 1998, at 22.2 C (71.9 F). The strongest colour marks a difference of 0.8 C (1.4 F).
Annual mean temperature at Boquillas Rs as warming stripes, 1980 to 2005
YearAnnual mean temperatureDifference from the station mean
198021.9 C+0.42 C
198121.6 C+0.18 C
198221.3 C-0.14 C
198321.4 C-0.04 C
198421.1 C-0.38 C
198521.4 C-0.08 C
198621.7 C+0.19 C
198921.3 C-0.15 C
199021.4 C-0.11 C
199121.0 C-0.44 C
199221.0 C-0.51 C
199321.1 C-0.41 C
199421.9 C+0.42 C
199521.6 C+0.18 C
199822.2 C+0.73 C
200021.7 C+0.26 C
200121.7 C+0.26 C
200421.1 C-0.38 C
200521.5 C+0.01 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

1910 to 2006
Yearly extremes at Boquillas Rs: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)47.2 C (117.0 F)199444.4 C (111.9 F)44
Coldest night (TNn)-15.6 C (3.9 F)1989-7.2 C (19.0 F)44
Wettest day (Rx1day)68.3 mm (2.7 in)196631.9 mm (1.3 in)58
Wettest five days (Rx5day)94.5 mm (3.7 in)198143.9 mm (1.7 in)58
Longest dry spell (CDD)148 days197155 days58

Hottest day (TXx)

Hottest day (TXx) at Boquillas Rs by year The hottest day of the year at Boquillas Rs, 1910 to 2006. The record is 47.2 C (117.0 F) in 1994, marked on the chart; the median year is 44.4 C (111.9 F). 303540455019201940196019802000Record: 47.2 C (117.0 F) in 1994
The hottest day of the year at Boquillas Rs, 1910 to 2006. The record is 47.2 C (117.0 F) in 1994, marked on the chart; the median year is 44.4 C (111.9 F).
Hottest day (TXx) at Boquillas Rs by year
YearHottest day (TXx)
191045.0 C (113.0 F)
194945.6 C (114.1 F)
1950n/a
195246.1 C (115.0 F)
195346.1 C (115.0 F)
195445.6 C (114.1 F)
195541.1 C (106.0 F)
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a
1962n/a
1963n/a
196444.4 C (111.9 F)
196544.4 C (111.9 F)
196643.9 C (111.0 F)
196743.3 C (109.9 F)
1968n/a
1969n/a
197042.8 C (109.0 F)
197141.1 C (106.0 F)
197244.4 C (111.9 F)
1973n/a
197433.3 C (91.9 F)
1975n/a
1976n/a
197737.8 C (100.0 F)
197834.4 C (93.9 F)
197942.8 C (109.0 F)
198046.7 C (116.1 F)
198145.6 C (114.1 F)
198243.3 C (109.9 F)
198345.0 C (113.0 F)
198443.3 C (109.9 F)
198544.4 C (111.9 F)
198643.3 C (109.9 F)
198745.0 C (113.0 F)
198843.9 C (111.0 F)
198946.7 C (116.1 F)
199045.0 C (113.0 F)
199143.9 C (111.0 F)
199246.7 C (116.1 F)
199343.3 C (109.9 F)
199447.2 C (117.0 F)
199545.6 C (114.1 F)
199646.1 C (115.0 F)
199743.9 C (111.0 F)
199847.2 C (117.0 F)
199945.6 C (114.1 F)
200045.0 C (113.0 F)
200143.3 C (109.9 F)
200244.4 C (111.9 F)
200345.0 C (113.0 F)
200443.9 C (111.0 F)
200546.7 C (116.1 F)
200644.4 C (111.9 F)

Coldest night (TNn)

Coldest night (TNn) at Boquillas Rs by year The coldest night of the year at Boquillas Rs, 1910 to 2006. The record is -15.6 C (3.9 F) in 1989, marked on the chart; the median year is -7.2 C (19.0 F). -20-100102019201940196019802000Record: -15.6 C (3.9 F) in 1989
The coldest night of the year at Boquillas Rs, 1910 to 2006. The record is -15.6 C (3.9 F) in 1989, marked on the chart; the median year is -7.2 C (19.0 F).
Coldest night (TNn) at Boquillas Rs by year
YearColdest night (TNn)
191018.3 C (64.9 F)
19495.6 C (42.1 F)
1950n/a
1952-10.0 C (14.0 F)
1953-11.1 C (12.0 F)
1954-3.9 C (25.0 F)
1955-6.7 C (19.9 F)
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a
1962n/a
1963n/a
1964-8.9 C (16.0 F)
1965-6.1 C (21.0 F)
196617.2 C (63.0 F)
19677.2 C (45.0 F)
1968n/a
1969n/a
19707.8 C (46.0 F)
197118.9 C (66.0 F)
1972-3.9 C (25.0 F)
1973n/a
1974-5.0 C (23.0 F)
1975n/a
1976n/a
1977-5.6 C (21.9 F)
1978-0.6 C (30.9 F)
1979-6.7 C (19.9 F)
1980-4.4 C (24.1 F)
1981-4.4 C (24.1 F)
1982-6.1 C (21.0 F)
1983-11.1 C (12.0 F)
1984-8.3 C (17.1 F)
1985-10.6 C (12.9 F)
1986-7.2 C (19.0 F)
1987-8.9 C (16.0 F)
1988-9.4 C (15.1 F)
1989-15.6 C (3.9 F)
1990-7.2 C (19.0 F)
1991-6.1 C (21.0 F)
1992-8.9 C (16.0 F)
1993-6.7 C (19.9 F)
1994-9.4 C (15.1 F)
1995-7.2 C (19.0 F)
1996-12.8 C (9.0 F)
1997-13.9 C (7.0 F)
1998-6.1 C (21.0 F)
1999-8.3 C (17.1 F)
2000-8.9 C (16.0 F)
2001-7.8 C (18.0 F)
2002-10.0 C (14.0 F)
2003-10.0 C (14.0 F)
2004-10.6 C (12.9 F)
2005-9.4 C (15.1 F)
2006-7.8 C (18.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Boquillas Rs by year The wettest day of the year at Boquillas Rs, 1910 to 2006. The record is 68.3 mm (2.7 in) in 1966, marked on the chart; the median year is 31.9 mm (1.3 in). 02040608019201940196019802000Record: 68.3 mm (2.7 in) in 1966
The wettest day of the year at Boquillas Rs, 1910 to 2006. The record is 68.3 mm (2.7 in) in 1966, marked on the chart; the median year is 31.9 mm (1.3 in).
Wettest day (Rx1day) at Boquillas Rs by year
YearWettest day (Rx1day)
19100.8 mm (0.03 in)
194924.1 mm (0.9 in)
19500.0 mm (0.00 in)
195222.1 mm (0.9 in)
195312.7 mm (0.5 in)
195467.3 mm (2.6 in)
195530.5 mm (1.2 in)
195640.6 mm (1.6 in)
195726.2 mm (1.0 in)
195822.9 mm (0.9 in)
195919.6 mm (0.8 in)
196028.2 mm (1.1 in)
196131.8 mm (1.3 in)
196233.3 mm (1.3 in)
196349.3 mm (1.9 in)
196433.3 mm (1.3 in)
196529.5 mm (1.2 in)
196668.3 mm (2.7 in)
196730.0 mm (1.2 in)
196836.3 mm (1.4 in)
196931.2 mm (1.2 in)
197052.8 mm (2.1 in)
197132.0 mm (1.3 in)
197233.5 mm (1.3 in)
197324.1 mm (0.9 in)
197440.6 mm (1.6 in)
197537.1 mm (1.5 in)
197639.1 mm (1.5 in)
197721.1 mm (0.8 in)
197838.1 mm (1.5 in)
197934.5 mm (1.4 in)
198052.3 mm (2.1 in)
198145.7 mm (1.8 in)
198231.2 mm (1.2 in)
198354.4 mm (2.1 in)
198420.3 mm (0.8 in)
198539.4 mm (1.6 in)
198646.7 mm (1.8 in)
198746.5 mm (1.8 in)
198833.0 mm (1.3 in)
198917.8 mm (0.7 in)
199046.7 mm (1.8 in)
199135.6 mm (1.4 in)
199227.7 mm (1.1 in)
199342.4 mm (1.7 in)
199425.7 mm (1.0 in)
199527.9 mm (1.1 in)
199640.6 mm (1.6 in)
199726.2 mm (1.0 in)
199829.7 mm (1.2 in)
199930.5 mm (1.2 in)
200034.0 mm (1.3 in)
200123.4 mm (0.9 in)
200233.3 mm (1.3 in)
200327.9 mm (1.1 in)
200444.5 mm (1.8 in)
200526.7 mm (1.1 in)
200616.5 mm (0.6 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Boquillas Rs by year The wettest five days of the year at Boquillas Rs, 1910 to 2006. The record is 94.5 mm (3.7 in) in 1981, marked on the chart; the median year is 43.9 mm (1.7 in). 025507510019201940196019802000Record: 94.5 mm (3.7 in) in 1981
The wettest five days of the year at Boquillas Rs, 1910 to 2006. The record is 94.5 mm (3.7 in) in 1981, marked on the chart; the median year is 43.9 mm (1.7 in).
Wettest five days (Rx5day) at Boquillas Rs by year
YearWettest five days (Rx5day)
19101.8 mm (0.07 in)
194930.5 mm (1.2 in)
19500.0 mm (0.00 in)
195227.2 mm (1.1 in)
195317.5 mm (0.7 in)
195486.1 mm (3.4 in)
195533.3 mm (1.3 in)
195640.6 mm (1.6 in)
195731.3 mm (1.2 in)
195835.8 mm (1.4 in)
195931.1 mm (1.2 in)
196031.0 mm (1.2 in)
196168.8 mm (2.7 in)
196244.1 mm (1.7 in)
196349.6 mm (2.0 in)
196442.5 mm (1.7 in)
196539.3 mm (1.5 in)
196672.4 mm (2.9 in)
196732.5 mm (1.3 in)
196844.5 mm (1.8 in)
196931.2 mm (1.2 in)
197059.7 mm (2.4 in)
197161.2 mm (2.4 in)
197235.0 mm (1.4 in)
197341.9 mm (1.6 in)
197492.6 mm (3.6 in)
197550.3 mm (2.0 in)
197662.5 mm (2.5 in)
197721.9 mm (0.9 in)
197863.5 mm (2.5 in)
197936.8 mm (1.4 in)
198057.2 mm (2.3 in)
198194.5 mm (3.7 in)
198237.8 mm (1.5 in)
198375.7 mm (3.0 in)
198453.2 mm (2.1 in)
198555.4 mm (2.2 in)
198680.0 mm (3.1 in)
198759.7 mm (2.4 in)
198850.6 mm (2.0 in)
198930.5 mm (1.2 in)
199063.4 mm (2.5 in)
199150.6 mm (2.0 in)
199250.3 mm (2.0 in)
199349.3 mm (1.9 in)
199448.8 mm (1.9 in)
199552.1 mm (2.1 in)
199642.1 mm (1.7 in)
199732.0 mm (1.3 in)
199840.1 mm (1.6 in)
199930.5 mm (1.2 in)
200056.3 mm (2.2 in)
200123.7 mm (0.9 in)
200241.7 mm (1.6 in)
200348.3 mm (1.9 in)
200449.5 mm (1.9 in)
200543.7 mm (1.7 in)
200618.1 mm (0.7 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Boquillas Rs by year The longest dry spell of the year at Boquillas Rs, 1910 to 2006. The record is 148 days in 1971, marked on the chart; the median year is 55 days. 05010015019201940196019802000Record: 148 days in 1971
The longest dry spell of the year at Boquillas Rs, 1910 to 2006. The record is 148 days in 1971, marked on the chart; the median year is 55 days.
Longest dry spell (CDD) at Boquillas Rs by year
YearLongest dry spell (CDD)
191092 days
194937 days
195021 days
1952126 days
195344 days
195469 days
195544 days
195669 days
195751 days
195838 days
195951 days
196049 days
196146 days
196244 days
196333 days
196447 days
196584 days
196684 days
196765 days
196830 days
196999 days
197071 days
1971148 days
197248 days
1973100 days
197450 days
197595 days
197668 days
197755 days
197831 days
197974 days
198057 days
198168 days
198253 days
198365 days
1984105 days
198575 days
198652 days
198754 days
198836 days
198952 days
199056 days
199134 days
199244 days
199352 days
199439 days
199546 days
199695 days
199735 days
199859 days
1999109 days
200086 days
200159 days
200277 days
200358 days
200429 days
200559 days
200631 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

47 years, 1956 to 2005

A day with at least 33.3 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 67.5 mm (2.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Boquillas Rs: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years33.3 mm (1.3 in)
5 years42.9 mm (1.7 in)
10 years49.0 mm (1.9 in)
25 years56.6 mm (2.2 in)
50 years62.1 mm (2.4 in)Longer than the 47 years of record
100 years67.5 mm (2.7 in)Longer than the 47 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, 47 years of values from 1956 to 2005.

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: 68.3 mm (2.7 in) in 1966; 54.4 mm (2.1 in) in 1983; 52.8 mm (2.1 in) in 1970.

Download the Data

  • Data for Boquillas Rs standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Boquillas Rs 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

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