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Palo Verde Weather Records (MXN00014104)

Record envelope, standing records and threshold days for Palo Verde (MXN00014104), Mexico, with 68 years of record.

Key Facts for Palo Verde

  • Palo Verde (MXN00014104) is a weather station in Mexico at 20.63 latitude and -102.95 longitude, 1,730 m (5,675 ft) above sea level.
  • The station reports from 1944 to 2011, 68 years of record.
  • 1,464 records set at Palo Verde still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Palo Verde set a daily record high minimum temperature of 10.0 C (50.0 F) on 28 February 2011.

About the Station

  • Location: Mexico, 20.63 latitude, -102.95 longitude.
  • Elevation: 1,730 m (5,675 ft).
  • Period of record: 1944 to 2011, 68 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 Palo Verde, with 2026 drawn through them The band shows the record high and record low for each calendar day at Palo Verde. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -10010203040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Palo Verde. 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 Palo Verde, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan30.6 C (87.1 F)-7.2 C (19.0 F)n/an/a
Feb31.7 C (89.1 F)-5.0 C (23.0 F)n/an/a
Mar38.3 C (100.9 F)-2.2 C (28.0 F)n/an/a
Apr38.9 C (102.0 F)0.0 C (32.0 F)n/an/a
May39.4 C (102.9 F)1.7 C (35.1 F)n/an/a
Jun39.4 C (102.9 F)1.7 C (35.1 F)n/an/a
Jul37.8 C (100.0 F)5.0 C (41.0 F)n/an/a
Aug35.6 C (96.1 F)2.8 C (37.0 F)n/an/a
Sep35.0 C (95.0 F)1.7 C (35.1 F)n/an/a
Oct33.9 C (93.0 F)0.0 C (32.0 F)n/an/a
Nov31.7 C (89.1 F)-5.0 C (23.0 F)n/an/a
Dec30.6 C (87.1 F)-5.0 C (23.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Palo Verde by the year they were set 1,464 records at Palo Verde still stand. 1953 holds the most, with 140. 0501001501944: 151945: 91946: 191947: 291948: 111949: 111950: 191951: 251952: 331953: 1401954: 311955: 101956: 71957: 141958: 211959: 161960: 121961: 201962: 181963: 101964: 161965: 201966: 191967: 211968: 261969: 211970: 231971: 131972: 271973: 171974: 121975: 121976: 141977: 211978: 191979: 231980: 261981: 151982: 231983: 221984: 141985: 91986: 121987: 191988: 151991: 111992: 271993: 211994: 131995: 181996: 91997: 201998: 121999: 222000: 262001: 442002: 572003: 72004: 102005: 782006: 532007: 442008: 362009: 92010: 162011: 21944195119581965197219791986199520022009
1,464 records at Palo Verde still stand. 1953 holds the most, with 140.
Standing records at Palo Verde by the year they were set
Year setStanding records
194415
19459
194619
194729
194811
194911
195019
195125
195233
1953140
195431
195510
19567
195714
195821
195916
196012
196120
196218
196310
196416
196520
196619
196721
196826
196921
197023
197113
197227
197317
197412
197512
197614
197721
197819
197923
198026
198115
198223
198322
198414
19859
198612
198719
198815
199111
199227
199321
199413
199518
19969
199720
199812
199922
200026
200144
200257
20037
200410
200578
200653
200744
200836
20099
201016
20112

All-Time Record Progression

4 new records
When Palo Verde set new all-time records 4 all-time records were set at Palo Verde between 25 January 1980 and 7 June 1999. Each dot is a new record. Record low maximum temperatureRecord low minimum temperatureRecord high maximum temperature25 January 1980: Record low maximum temperature 10.0 C (50.0 F)23 January 1983: Record low minimum temperature -7.2 C (19.0 F)18 March 1999: Record high maximum temperature 38.3 C (100.9 F)7 June 1999: Record high maximum temperature 39.4 C (102.9 F)19801985199019952000
4 all-time records were set at Palo Verde between 25 January 1980 and 7 June 1999. Each dot is a new record.
When Palo Verde set new all-time records
DateKindDetail
1980-01-25Record low maximum temperatureRecord low maximum temperature 10.0 C (50.0 F)
1983-01-23Record low minimum temperatureRecord low minimum temperature -7.2 C (19.0 F)
1999-03-18Record high maximum temperatureRecord high maximum temperature 38.3 C (100.9 F)
1999-06-07Record high maximum temperatureRecord high maximum temperature 39.4 C (102.9 F)

Wettest Day of Each Month

Jun: 140.7 mm (5.5 in)
Record daily precipitation for each month at Palo Verde The wettest day on record for each calendar month at Palo Verde. The most was 140.7 mm (5.5 in) on 25 June 1973. 050100150 Jan: 45.0 mm (1.8 in), 25 January 1992 Jan Feb: 60.7 mm (2.4 in), 3 February 2010 Feb Mar: 41.7 mm (1.6 in), 4 March 1968 Mar Apr: 37.3 mm (1.5 in), 10 April 1946 Apr May: 80.3 mm (3.2 in), 27 May 1946 May Jun: 140.7 mm (5.5 in), 25 June 1973 Jun Jul: 102.4 mm (4.0 in), 14 July 1967 Jul Aug: 90.7 mm (3.6 in), 24 August 2009 Aug Sep: 59.9 mm (2.4 in), 6 September 2003 Sep Oct: 72.1 mm (2.8 in), 11 October 1976 Oct Nov: 52.6 mm (2.1 in), 26 November 1982 Nov Dec: 23.9 mm (0.9 in), 14 December 1958 Dec
The wettest day on record for each calendar month at Palo Verde. The most was 140.7 mm (5.5 in) on 25 June 1973.
Record daily precipitation for each month at Palo Verde
MonthRecord daily precipitation (mm)Date
Jan45.0 mm (1.8 in)25 January 1992
Feb60.7 mm (2.4 in)3 February 2010
Mar41.7 mm (1.6 in)4 March 1968
Apr37.3 mm (1.5 in)10 April 1946
May80.3 mm (3.2 in)27 May 1946
Jun140.7 mm (5.5 in)25 June 1973
Jul102.4 mm (4.0 in)14 July 1967
Aug90.7 mm (3.6 in)24 August 2009
Sep59.9 mm (2.4 in)6 September 2003
Oct72.1 mm (2.8 in)11 October 1976
Nov52.6 mm (2.1 in)26 November 1982
Dec23.9 mm (0.9 in)14 December 1958

Period of Record Coverage

1944 to 2011
Days with data per year at Palo Verde 66 years of record at Palo Verde, 1944 to 2011. 13 years have data for under 90 percent of days and are left out of rankings: 1944, 1945, 1953, 1954, 1963, 1985, 1986, 1987 and others. 1944: 174 of 366 days1945: 294 of 365 days1946: 360 of 365 days1947: 359 of 365 days1948: 359 of 366 days1949: 364 of 365 days1950: 362 of 365 days1951: 359 of 365 days1952: 364 of 366 days1953: 254 of 365 days1954: 272 of 365 days1955: 364 of 365 days1956: 366 of 366 days1957: 332 of 365 days1958: 364 of 365 days1959: 363 of 365 days1960: 362 of 366 days1961: 363 of 365 days1962: 364 of 365 days1963: 273 of 365 days1964: 364 of 366 days1965: 365 of 365 days1966: 361 of 365 days1967: 363 of 365 days1968: 334 of 366 days1969: 363 of 365 days1970: 359 of 365 days1971: 363 of 365 days1972: 364 of 366 days1973: 359 of 365 days1974: 362 of 365 days1975: 353 of 365 days1976: 360 of 366 days1977: 354 of 365 days1978: 365 of 365 days1979: 362 of 365 days1980: 365 of 366 days1981: 334 of 365 days1982: 334 of 365 days1983: 359 of 365 days1984: 366 of 366 days1985: 273 of 365 days1986: 141 of 365 days1987: 290 of 365 days1988: 366 of 366 days1991: 334 of 365 days1992: 361 of 366 days1993: 300 of 365 days1994: 362 of 365 days1995: 360 of 365 days1996: 332 of 366 days1997: 363 of 365 days1998: 363 of 365 days1999: 294 of 365 days2000: 275 of 366 days2001: 335 of 365 days2002: 356 of 365 days2003: 333 of 365 days2004: 57 of 366 days2005: 348 of 365 days2006: 364 of 365 days2007: 364 of 365 days2008: 335 of 366 days2009: 365 of 365 days2010: 364 of 365 days2011: 58 of 365 days195019601970198020002010
66 years of record at Palo Verde, 1944 to 2011. 13 years have data for under 90 percent of days and are left out of rankings: 1944, 1945, 1953, 1954, 1963, 1985, 1986, 1987 and others.
Days with data per year at Palo Verde
YearDays with dataShare of yearComplete
194417448%No
194529481%No
194636099%Yes
194735998%Yes
194835998%Yes
1949364100%Yes
195036299%Yes
195135998%Yes
195236499%Yes
195325470%No
195427275%No
1955364100%Yes
1956366100%Yes
195733291%Yes
1958364100%Yes
195936399%Yes
196036299%Yes
196136399%Yes
1962364100%Yes
196327375%No
196436499%Yes
1965365100%Yes
196636199%Yes
196736399%Yes
196833491%Yes
196936399%Yes
197035998%Yes
197136399%Yes
197236499%Yes
197335998%Yes
197436299%Yes
197535397%Yes
197636098%Yes
197735497%Yes
1978365100%Yes
197936299%Yes
1980365100%Yes
198133492%Yes
198233492%Yes
198335998%Yes
1984366100%Yes
198527375%No
198614139%No
198729079%No
1988366100%Yes
199133492%Yes
199236199%Yes
199330082%No
199436299%Yes
199536099%Yes
199633291%Yes
199736399%Yes
199836399%Yes
199929481%No
200027575%No
200133592%Yes
200235698%Yes
200333391%Yes
20045716%No
200534895%Yes
2006364100%Yes
2007364100%Yes
200833592%Yes
2009365100%Yes
2010364100%Yes
20115816%No

Latest Records

20
Latest records at Palo Verde
DateStationRecordValueBeat old record byOld record stoodSignificance
28 February 2011Palo Verde, MXdaily high min10.0 C (50.0 F)1.1 C (2.0 F)56 years27 of 100 (Routine)
27 February 2011Palo Verde, MXdaily high min (Tie)10.0 C (50.0 F)tie23 years3 of 100 (Routine)
26 February 2011Palo Verde, MXdaily high min (Tie)8.9 C (48.0 F)tie65 years6 of 100 (Routine)
3 February 2011Palo Verde, MXdaily low max18.9 C (66.0 F)0.5 C (0.9 F)4 years8 of 100 (Routine)
28 September 2010Palo Verde, MXdaily high max30.6 C (87.1 F)0.6 C (1.1 F)56 years25 of 100 (Routine)
25 September 2010Palo Verde, MXdaily high min (Tie)15.0 C (59.0 F)tie59 years5 of 100 (Routine)
24 September 2010Palo Verde, MXdaily high min (Tie)15.6 C (60.1 F)tie64 years6 of 100 (Routine)
16 September 2010Palo Verde, MXdaily high min (Tie)15.6 C (60.1 F)tie37 years4 of 100 (Routine)
8 September 2010Palo Verde, MXdaily high min (Tie)16.7 C (62.1 F)tie36 years4 of 100 (Routine)
5 September 2010Palo Verde, MXdaily high min (Tie)15.6 C (60.1 F)tie31 years3 of 100 (Routine)
3 September 2010Palo Verde, MXdaily high min (Tie)15.6 C (60.1 F)tie61 years6 of 100 (Routine)
18 August 2010Palo Verde, MXdaily high min (Tie)15.6 C (60.1 F)tie32 years3 of 100 (Routine)
16 August 2010Palo Verde, MXdaily high min (Tie)15.6 C (60.1 F)tie29 years3 of 100 (Routine)
10 August 2010Palo Verde, MXdaily high min17.2 C (63.0 F)0.5 C (0.9 F)40 years20 of 100 (Routine)
9 August 2010Palo Verde, MXdaily high min (Tie)16.7 C (62.1 F)tie29 years3 of 100 (Routine)
8 August 2010Palo Verde, MXdaily high min16.1 C (61.0 F)0.5 C (0.9 F)19 years13 of 100 (Routine)
26 July 2010Palo Verde, MXdaily rain41.9 mm (1.6 in)14.0 mm (0.6 in)21 years24 of 100 (Routine)
16 July 2010Palo Verde, MXdaily high min (Tie)15.6 C (60.1 F)tie31 years3 of 100 (Routine)
14 July 2010Palo Verde, MXdaily low min (Tie)10.6 C (51.1 F)tie36 years4 of 100 (Routine)
13 July 2010Palo Verde, MXdaily rain59.9 mm (2.4 in)29.4 mm (1.2 in)1 year32 of 100 (Routine)

Climate Trend

39 complete years, 1946 to 2002
Annual mean temperature at Palo Verde as warming stripes, 1946 to 2002 One stripe for each of 39 complete years at Palo Verde, 1946 to 2002. Blue stripes are years cooler than the station's own mean of 17.8 C (64.0 F); red stripes are warmer. The coolest year was 1966, at 16.6 C (61.8 F), and the warmest was 2002, at 19.4 C (66.9 F). The strongest colour marks a difference of 1.7 C (3.1 F). 1946: 18.0 C, +0.2 C from the station mean1947: 17.6 C, -0.2 C from the station mean1948: 18.0 C, +0.2 C from the station mean1949: 17.7 C, -0.1 C from the station mean1950: 17.6 C, -0.2 C from the station mean1951: 17.6 C, -0.2 C from the station mean1952: 17.3 C, -0.5 C from the station mean1955: 17.5 C, -0.3 C from the station mean1956: 17.3 C, -0.5 C from the station mean1958: 17.4 C, -0.3 C from the station mean1959: 17.2 C, -0.6 C from the station mean1960: 17.3 C, -0.5 C from the station mean1961: 17.0 C, -0.8 C from the station mean1962: 17.1 C, -0.7 C from the station mean1964: 16.7 C, -1.1 C from the station mean1965: 16.9 C, -0.9 C from the station mean1966: 16.6 C, -1.2 C from the station mean1967: 16.6 C, -1.2 C from the station mean1969: 18.1 C, +0.3 C from the station mean1970: 17.6 C, -0.2 C from the station mean1971: 17.6 C, -0.2 C from the station mean1972: 18.0 C, +0.2 C from the station mean1973: 17.8 C, 0.0 C from the station mean1974: 17.5 C, -0.2 C from the station mean1975: 17.4 C, -0.4 C from the station mean1976: 17.5 C, -0.3 C from the station mean1977: 17.8 C, 0.0 C from the station mean1978: 18.2 C, +0.4 C from the station mean1979: 18.4 C, +0.6 C from the station mean1980: 18.5 C, +0.7 C from the station mean1983: 18.0 C, +0.2 C from the station mean1984: 18.2 C, +0.4 C from the station mean1988: 18.9 C, +1.1 C from the station mean1992: 18.2 C, +0.4 C from the station mean1994: 19.2 C, +1.4 C from the station mean1995: 19.0 C, +1.2 C from the station mean1997: 18.5 C, +0.7 C from the station mean1998: 19.0 C, +1.2 C from the station mean2002: 19.4 C, +1.6 C from the station mean194619501955196019651970197519801985199019952000
One stripe for each of 39 complete years at Palo Verde, 1946 to 2002. Blue stripes are years cooler than the station's own mean of 17.8 C (64.0 F); red stripes are warmer. The coolest year was 1966, at 16.6 C (61.8 F), and the warmest was 2002, at 19.4 C (66.9 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Palo Verde as warming stripes, 1946 to 2002
YearAnnual mean temperatureDifference from the station mean
194618.0 C+0.17 C
194717.6 C-0.18 C
194818.0 C+0.17 C
194917.7 C-0.11 C
195017.6 C-0.24 C
195117.6 C-0.24 C
195217.3 C-0.49 C
195517.5 C-0.32 C
195617.3 C-0.51 C
195817.4 C-0.35 C
195917.2 C-0.60 C
196017.3 C-0.49 C
196117.0 C-0.78 C
196217.1 C-0.74 C
196416.7 C-1.12 C
196516.9 C-0.93 C
196616.6 C-1.24 C
196716.6 C-1.21 C
196918.1 C+0.29 C
197017.6 C-0.23 C
197117.6 C-0.18 C
197218.0 C+0.18 C
197317.8 C+0.04 C
197417.5 C-0.25 C
197517.4 C-0.43 C
197617.5 C-0.32 C
197717.8 C+0.02 C
197818.2 C+0.40 C
197918.4 C+0.61 C
198018.5 C+0.74 C
198318.0 C+0.17 C
198418.2 C+0.36 C
198818.9 C+1.09 C
199218.2 C+0.40 C
199419.2 C+1.40 C
199519.0 C+1.23 C
199718.5 C+0.73 C
199819.0 C+1.18 C
200219.4 C+1.62 C

The annual mean temperature here has risen by 0.3 C (0.2 to 0.4) per decade over 1946 to 2002. In Fahrenheit: 0.6 F (0.4 to 0.8) 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 Palo Verde
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.3 C (0.2 to 0.4) per decade0.6 F (0.4 to 0.8) per decade1946 to 200239Rise
Mean daily maximum0.3 C (0.2 to 0.5) per decade0.6 F (0.3 to 0.9) per decade1946 to 200239Rise
Mean daily minimum0.3 C (0.1 to 0.4) per decade0.5 F (0.3 to 0.8) per decade1946 to 200239Rise

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

1944 to 2011
Yearly extremes at Palo Verde: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)39.4 C (102.9 F)199935.0 C (95.0 F)66
Coldest night (TNn)-7.2 C (19.0 F)1983-0.6 C (30.9 F)66
Wettest day (Rx1day)140.7 mm (5.5 in)197345.3 mm (1.8 in)66
Wettest five days (Rx5day)191.0 mm (7.5 in)197397.4 mm (3.8 in)66
Longest dry spell (CDD)181 days200590 days66

Hottest day (TXx)

Hottest day (TXx) at Palo Verde by year The hottest day of the year at Palo Verde, 1944 to 2011. The record is 39.4 C (102.9 F) in 1999, marked on the chart; the median year is 35.0 C (95.0 F). 3032.53537.540196019802000Record: 39.4 C (102.9 F) in 1999
The hottest day of the year at Palo Verde, 1944 to 2011. The record is 39.4 C (102.9 F) in 1999, marked on the chart; the median year is 35.0 C (95.0 F).
Hottest day (TXx) at Palo Verde by year
YearHottest day (TXx)
194430.0 C (86.0 F)
194533.9 C (93.0 F)
194635.0 C (95.0 F)
194733.3 C (91.9 F)
194835.0 C (95.0 F)
194935.0 C (95.0 F)
195033.9 C (93.0 F)
195133.9 C (93.0 F)
195235.0 C (95.0 F)
195337.8 C (100.0 F)
195433.9 C (93.0 F)
195535.0 C (95.0 F)
195634.4 C (93.9 F)
195733.3 C (91.9 F)
195833.3 C (91.9 F)
195931.7 C (89.1 F)
196033.3 C (91.9 F)
196134.4 C (93.9 F)
196233.9 C (93.0 F)
196333.9 C (93.0 F)
196433.3 C (91.9 F)
196535.0 C (95.0 F)
196632.8 C (91.0 F)
196735.0 C (95.0 F)
196831.7 C (89.1 F)
196935.6 C (96.1 F)
197034.4 C (93.9 F)
197134.4 C (93.9 F)
197235.0 C (95.0 F)
197335.0 C (95.0 F)
197435.0 C (95.0 F)
197534.4 C (93.9 F)
197633.3 C (91.9 F)
197733.3 C (91.9 F)
197834.4 C (93.9 F)
197935.6 C (96.1 F)
198035.6 C (96.1 F)
198135.0 C (95.0 F)
198236.7 C (98.1 F)
198336.7 C (98.1 F)
198435.0 C (95.0 F)
198535.6 C (96.1 F)
198635.6 C (96.1 F)
198735.0 C (95.0 F)
198837.2 C (99.0 F)
199135.6 C (96.1 F)
199236.7 C (98.1 F)
199335.0 C (95.0 F)
199435.6 C (96.1 F)
199537.8 C (100.0 F)
199637.8 C (100.0 F)
199735.6 C (96.1 F)
199836.1 C (97.0 F)
199939.4 C (102.9 F)
200035.6 C (96.1 F)
200137.8 C (100.0 F)
200239.4 C (102.9 F)
200337.2 C (99.0 F)
200431.7 C (89.1 F)
200535.0 C (95.0 F)
200633.9 C (93.0 F)
200737.8 C (100.0 F)
200835.0 C (95.0 F)
200937.2 C (99.0 F)
201036.7 C (98.1 F)
201130.0 C (86.0 F)

Coldest night (TNn)

Coldest night (TNn) at Palo Verde by year The coldest night of the year at Palo Verde, 1944 to 2011. The record is -7.2 C (19.0 F) in 1983, marked on the chart; the median year is -0.6 C (30.9 F). -7.5-5-2.502.55196019802000Record: -7.2 C (19.0 F) in 1983
The coldest night of the year at Palo Verde, 1944 to 2011. The record is -7.2 C (19.0 F) in 1983, marked on the chart; the median year is -0.6 C (30.9 F).
Coldest night (TNn) at Palo Verde by year
YearColdest night (TNn)
19440.0 C (32.0 F)
1945-0.6 C (30.9 F)
1946-2.2 C (28.0 F)
1947-1.1 C (30.0 F)
19480.0 C (32.0 F)
19490.0 C (32.0 F)
1950-0.6 C (30.9 F)
1951-0.6 C (30.9 F)
19520.0 C (32.0 F)
19530.0 C (32.0 F)
1954-1.7 C (28.9 F)
1955-6.7 C (19.9 F)
1956-0.6 C (30.9 F)
1957-0.6 C (30.9 F)
1958-1.7 C (28.9 F)
1959-1.1 C (30.0 F)
1960-1.1 C (30.0 F)
1961-5.0 C (23.0 F)
1962-5.0 C (23.0 F)
1963-5.0 C (23.0 F)
1964-3.3 C (26.1 F)
1965-3.9 C (25.0 F)
1966-5.0 C (23.0 F)
1967-5.6 C (21.9 F)
1968-2.2 C (28.0 F)
1969-1.1 C (30.0 F)
1970-3.3 C (26.1 F)
1971-3.9 C (25.0 F)
1972-2.2 C (28.0 F)
19730.0 C (32.0 F)
19740.0 C (32.0 F)
1975-4.4 C (24.1 F)
1976-3.3 C (26.1 F)
19770.0 C (32.0 F)
19780.6 C (33.1 F)
19790.6 C (33.1 F)
19800.6 C (33.1 F)
19810.6 C (33.1 F)
19820.6 C (33.1 F)
1983-7.2 C (19.0 F)
19841.7 C (35.1 F)
1985-2.2 C (28.0 F)
19860.0 C (32.0 F)
19870.6 C (33.1 F)
1988-2.2 C (28.0 F)
19910.6 C (33.1 F)
1992-1.1 C (30.0 F)
1993-1.7 C (28.9 F)
19940.0 C (32.0 F)
19950.6 C (33.1 F)
19960.6 C (33.1 F)
1997-5.0 C (23.0 F)
1998-2.2 C (28.0 F)
19992.8 C (37.0 F)
20002.8 C (37.0 F)
20010.0 C (32.0 F)
2002-1.7 C (28.9 F)
20030.0 C (32.0 F)
20040.6 C (33.1 F)
20051.1 C (34.0 F)
20061.1 C (34.0 F)
20070.0 C (32.0 F)
20080.0 C (32.0 F)
20091.1 C (34.0 F)
20100.0 C (32.0 F)
20112.2 C (36.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Palo Verde by year The wettest day of the year at Palo Verde, 1944 to 2011. The record is 140.7 mm (5.5 in) in 1973, marked on the chart; the median year is 45.3 mm (1.8 in). 050100150196019802000Record: 140.7 mm (5.5 in) in 1973
The wettest day of the year at Palo Verde, 1944 to 2011. The record is 140.7 mm (5.5 in) in 1973, marked on the chart; the median year is 45.3 mm (1.8 in).
Wettest day (Rx1day) at Palo Verde by year
YearWettest day (Rx1day)
194464.3 mm (2.5 in)
194541.9 mm (1.6 in)
194680.3 mm (3.2 in)
194750.8 mm (2.0 in)
194846.7 mm (1.8 in)
194964.3 mm (2.5 in)
195062.5 mm (2.5 in)
195142.2 mm (1.7 in)
195233.3 mm (1.3 in)
195339.9 mm (1.6 in)
195442.4 mm (1.7 in)
195547.8 mm (1.9 in)
195644.5 mm (1.8 in)
195750.3 mm (2.0 in)
195865.0 mm (2.6 in)
195942.7 mm (1.7 in)
196035.6 mm (1.4 in)
196135.6 mm (1.4 in)
196245.5 mm (1.8 in)
196354.1 mm (2.1 in)
196441.9 mm (1.6 in)
196559.2 mm (2.3 in)
196655.6 mm (2.2 in)
1967102.4 mm (4.0 in)
196841.7 mm (1.6 in)
196955.1 mm (2.2 in)
197055.9 mm (2.2 in)
197143.7 mm (1.7 in)
197237.6 mm (1.5 in)
1973140.7 mm (5.5 in)
197437.3 mm (1.5 in)
197565.8 mm (2.6 in)
197672.1 mm (2.8 in)
197745.0 mm (1.8 in)
197859.9 mm (2.4 in)
197936.8 mm (1.4 in)
198048.3 mm (1.9 in)
198145.0 mm (1.8 in)
198252.6 mm (2.1 in)
198341.7 mm (1.6 in)
198442.9 mm (1.7 in)
198541.9 mm (1.6 in)
198639.9 mm (1.6 in)
198717.8 mm (0.7 in)
198869.9 mm (2.8 in)
199153.8 mm (2.1 in)
199248.8 mm (1.9 in)
199334.8 mm (1.4 in)
199454.9 mm (2.2 in)
199563.8 mm (2.5 in)
199637.8 mm (1.5 in)
199758.4 mm (2.3 in)
199839.9 mm (1.6 in)
199979.8 mm (3.1 in)
200038.1 mm (1.5 in)
200143.9 mm (1.7 in)
200240.9 mm (1.6 in)
200363.8 mm (2.5 in)
20040.0 mm (0.00 in)
20050.0 mm (0.00 in)
200617.3 mm (0.7 in)
200741.9 mm (1.6 in)
200860.5 mm (2.4 in)
200990.7 mm (3.6 in)
201065.8 mm (2.6 in)
20110.0 mm (0.00 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Palo Verde by year The wettest five days of the year at Palo Verde, 1944 to 2011. The record is 191.0 mm (7.5 in) in 1973, marked on the chart; the median year is 97.4 mm (3.8 in). 050100150200196019802000Record: 191.0 mm (7.5 in) in 1973
The wettest five days of the year at Palo Verde, 1944 to 2011. The record is 191.0 mm (7.5 in) in 1973, marked on the chart; the median year is 97.4 mm (3.8 in).
Wettest five days (Rx5day) at Palo Verde by year
YearWettest five days (Rx5day)
1944137.5 mm (5.4 in)
194567.5 mm (2.7 in)
194682.4 mm (3.2 in)
1947100.7 mm (4.0 in)
194881.6 mm (3.2 in)
1949161.1 mm (6.3 in)
1950105.9 mm (4.2 in)
195178.1 mm (3.1 in)
195291.7 mm (3.6 in)
195370.9 mm (2.8 in)
195483.0 mm (3.3 in)
1955122.8 mm (4.8 in)
195685.9 mm (3.4 in)
195768.1 mm (2.7 in)
1958136.2 mm (5.4 in)
1959105.4 mm (4.1 in)
196088.5 mm (3.5 in)
196171.7 mm (2.8 in)
1962106.2 mm (4.2 in)
196386.8 mm (3.4 in)
196471.8 mm (2.8 in)
1965110.1 mm (4.3 in)
196697.5 mm (3.8 in)
1967133.9 mm (5.3 in)
1968114.5 mm (4.5 in)
1969119.2 mm (4.7 in)
1970163.6 mm (6.4 in)
1971100.6 mm (4.0 in)
197283.4 mm (3.3 in)
1973191.0 mm (7.5 in)
197474.4 mm (2.9 in)
1975153.5 mm (6.0 in)
1976148.9 mm (5.9 in)
197781.6 mm (3.2 in)
197894.2 mm (3.7 in)
197993.0 mm (3.7 in)
198086.3 mm (3.4 in)
1981128.0 mm (5.0 in)
198292.5 mm (3.6 in)
1983101.4 mm (4.0 in)
198499.7 mm (3.9 in)
198592.5 mm (3.6 in)
198677.4 mm (3.0 in)
198744.5 mm (1.8 in)
1988109.3 mm (4.3 in)
1991108.4 mm (4.3 in)
199273.2 mm (2.9 in)
199357.4 mm (2.3 in)
1994122.5 mm (4.8 in)
1995106.2 mm (4.2 in)
199657.7 mm (2.3 in)
1997129.6 mm (5.1 in)
199894.5 mm (3.7 in)
1999130.9 mm (5.2 in)
200073.7 mm (2.9 in)
200197.3 mm (3.8 in)
2002104.3 mm (4.1 in)
2003159.5 mm (6.3 in)
20040.0 mm (0.00 in)
20050.0 mm (0.00 in)
200654.8 mm (2.2 in)
2007113.6 mm (4.5 in)
2008120.7 mm (4.8 in)
2009149.3 mm (5.9 in)
2010156.2 mm (6.1 in)
20110.0 mm (0.00 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Palo Verde by year The longest dry spell of the year at Palo Verde, 1944 to 2011. The record is 181 days in 2005, marked on the chart; the median year is 90 days. 050100150200196019802000Record: 181 days in 2005
The longest dry spell of the year at Palo Verde, 1944 to 2011. The record is 181 days in 2005, marked on the chart; the median year is 90 days.
Longest dry spell (CDD) at Palo Verde by year
YearLongest dry spell (CDD)
194427 days
1945120 days
194654 days
194773 days
194897 days
194968 days
195090 days
195174 days
195295 days
1953120 days
195490 days
1955109 days
1956112 days
195768 days
195867 days
195997 days
1960110 days
196147 days
196270 days
196358 days
196464 days
196568 days
196658 days
196769 days
196839 days
196958 days
197069 days
1971134 days
197265 days
197361 days
197469 days
197599 days
1976135 days
1977100 days
197891 days
1979100 days
198050 days
198158 days
1982120 days
1983125 days
198489 days
198584 days
198658 days
198779 days
198897 days
1991151 days
199256 days
1993120 days
1994106 days
1995118 days
1996133 days
199750 days
1998157 days
1999157 days
200087 days
2001151 days
200281 days
2003152 days
200457 days
2005181 days
2006110 days
2007122 days
2008126 days
2009161 days
2010117 days
201159 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 Palo Verde falls on 18 February and the median first autumn frost on 23 November, which leaves a median of 284 days between them.

Frost dates and growing season at Palo Verde
MeasureMedian, all yearsEarliest periodRecent period (1946 to 2002)Recent against earliestFitted trend
Last spring frost18 Februaryn/a18 Februaryn/an/a
First autumn frost23 Novembern/a23 Novembern/an/a
Growing days284 daysn/a284 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

54 years, 1946 to 2010

A day with at least 49.2 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 124.3 mm (4.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Palo Verde: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years49.2 mm (1.9 in)
5 years64.6 mm (2.5 in)
10 years76.4 mm (3.0 in)
25 years93.6 mm (3.7 in)
50 years108.1 mm (4.3 in)
100 years124.3 mm (4.9 in)Longer than the 54 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, 54 years of values from 1946 to 2010.

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: 140.7 mm (5.5 in) in 1973; 102.4 mm (4.0 in) in 1967; 90.7 mm (3.6 in) in 2009.

Download the Data

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