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Lancaster Weather Records (USW00003159)

Record envelope, standing records and threshold days for Lancaster (USW00003159), California, United States, with 53 years of record.

Key Facts for Lancaster

  • Lancaster (USW00003159) is a weather station in California, United States at 34.74 latitude and -118.21 longitude, 713 m (2,338 ft) above sea level.
  • The station reports from 1974 to 2026, 53 years of record.
  • 1,464 records set at Lancaster still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Lancaster set a daily record high minimum temperature of 17.2 C (63.0 F) on 10 October 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: California, United States, 34.74 latitude, -118.21 longitude.
  • Elevation: 713 m (2,338 ft).
  • Period of record: 1974 to 2026, 53 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

25 days at or beyond a record
Daily record high and record low at Lancaster, with 2026 drawn through them The band shows the record high and record low for each calendar day at Lancaster. The lines show the 2026 daily maximum and minimum. 25 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 Lancaster. The lines show the 2026 daily maximum and minimum. 25 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Lancaster, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan25.6 C (78.1 F)-16.1 C (3.0 F)21.1 C (70.0 F)-5.6 C (21.9 F)
Feb28.9 C (84.0 F)-11.7 C (10.9 F)28.9 C (84.0 F)-3.3 C (26.1 F)
Mar35.0 C (95.0 F)-8.3 C (17.1 F)35.0 C (95.0 F)-3.3 C (26.1 F)
Apr35.6 C (96.1 F)-4.4 C (24.1 F)30.0 C (86.0 F)-2.2 C (28.0 F)
May41.1 C (106.0 F)0.0 C (32.0 F)36.7 C (98.1 F)2.8 C (37.0 F)
Jun46.1 C (115.0 F)4.4 C (39.9 F)37.8 C (100.0 F)10.6 C (51.1 F)
Jul46.1 C (115.0 F)8.3 C (46.9 F)41.7 C (107.1 F)12.8 C (55.0 F)
Aug43.9 C (111.0 F)7.8 C (46.0 F)41.7 C (107.1 F)14.4 C (57.9 F)
Sep45.0 C (113.0 F)2.8 C (37.0 F)40.6 C (105.1 F)8.3 C (46.9 F)
Oct40.0 C (104.0 F)-7.7 C (18.1 F)36.1 C (97.0 F)9.4 C (48.9 F)
Nov30.6 C (87.1 F)-9.4 C (15.1 F)n/an/a
Dec26.1 C (79.0 F)-16.7 C (1.9 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Lancaster by the year they were set 1,464 records at Lancaster still stand. 1975 holds the most, with 49. 02040601974: 131975: 491976: 231977: 261978: 301979: 341980: 311981: 181982: 281983: 401984: 301985: 201986: 241987: 331988: 351989: 491990: 371991: 251992: 171993: 171994: 351995: 281996: 401997: 201998: 211999: 322000: 222001: 262002: 362003: 272004: 182005: 152006: 242007: 382008: 192009: 232010: 272011: 332012: 302013: 412014: 242015: 162016: 292017: 352018: 132019: 202020: 292021: 372022: 272023: 222024: 282025: 222026: 28197419801986199219982004201020162022
1,464 records at Lancaster still stand. 1975 holds the most, with 49.
Standing records at Lancaster by the year they were set
Year setStanding records
197413
197549
197623
197726
197830
197934
198031
198118
198228
198340
198430
198520
198624
198733
198835
198949
199037
199125
199217
199317
199435
199528
199640
199720
199821
199932
200022
200126
200236
200327
200418
200515
200624
200738
200819
200923
201027
201133
201230
201341
201424
201516
201629
201735
201813
201920
202029
202137
202227
202322
202428
202522
202628

All-Time Record Progression

7 new records
When Lancaster set new all-time records 7 all-time records were set at Lancaster between 17 July 2006 and 20 August 2023. Each dot is a new record. Record high minimum temperatureRecord high maximum temperatureRecord daily precipitation17 July 2006: Record high minimum temperature 27.8 C (82.0 F)26 July 2006: Record high minimum temperature 28.3 C (82.9 F)5 July 2007: Record high maximum temperature 45.0 C (113.0 F)30 June 2013: Record high maximum temperature 46.1 C (115.0 F)10 July 2021: Record high minimum temperature 28.9 C (84.0 F)11 July 2021: Record high minimum temperature 30.0 C (86.0 F)20 August 2023: Record daily precipitation 91.2 mm (3.6 in)201020152020
7 all-time records were set at Lancaster between 17 July 2006 and 20 August 2023. Each dot is a new record.
When Lancaster set new all-time records
DateKindDetail
2006-07-17Record high minimum temperatureRecord high minimum temperature 27.8 C (82.0 F)
2006-07-26Record high minimum temperatureRecord high minimum temperature 28.3 C (82.9 F)
2007-07-05Record high maximum temperatureRecord high maximum temperature 45.0 C (113.0 F)
2013-06-30Record high maximum temperatureRecord high maximum temperature 46.1 C (115.0 F)
2021-07-10Record high minimum temperatureRecord high minimum temperature 28.9 C (84.0 F)
2021-07-11Record high minimum temperatureRecord high minimum temperature 30.0 C (86.0 F)
2023-08-20Record daily precipitationRecord daily precipitation 91.2 mm (3.6 in)

Wettest Day of Each Month

Aug: 91.2 mm (3.6 in)
Record daily precipitation for each month at Lancaster The wettest day on record for each calendar month at Lancaster. The most was 91.2 mm (3.6 in) on 20 August 2023. 0255075100 Jan: 40.6 mm (1.6 in), 13 January 1993 Jan Feb: 69.9 mm (2.8 in), 16 February 1980 Feb Mar: 74.4 mm (2.9 in), 1 March 1983 Mar Apr: 41.4 mm (1.6 in), 17 April 2000 Apr May: 25.7 mm (1.0 in), 8 May 1977 May Jun: 21.1 mm (0.8 in), 5 June 1993 Jun Jul: 40.4 mm (1.6 in), 19 July 2015 Jul Aug: 91.2 mm (3.6 in), 20 August 2023 Aug Sep: 28.4 mm (1.1 in), 10 September 1976 Sep Oct: 38.6 mm (1.5 in), 31 October 1987 Oct Nov: 33.0 mm (1.3 in), 21 November 2013 Nov Dec: 62.5 mm (2.5 in), 28 December 2004 Dec
The wettest day on record for each calendar month at Lancaster. The most was 91.2 mm (3.6 in) on 20 August 2023.
Record daily precipitation for each month at Lancaster
MonthRecord daily precipitation (mm)Date
Jan40.6 mm (1.6 in)13 January 1993
Feb69.9 mm (2.8 in)16 February 1980
Mar74.4 mm (2.9 in)1 March 1983
Apr41.4 mm (1.6 in)17 April 2000
May25.7 mm (1.0 in)8 May 1977
Jun21.1 mm (0.8 in)5 June 1993
Jul40.4 mm (1.6 in)19 July 2015
Aug91.2 mm (3.6 in)20 August 2023
Sep28.4 mm (1.1 in)10 September 1976
Oct38.6 mm (1.5 in)31 October 1987
Nov33.0 mm (1.3 in)21 November 2013
Dec62.5 mm (2.5 in)28 December 2004

Period of Record Coverage

1974 to 2026
Days with data per year at Lancaster 53 years of record at Lancaster, 1974 to 2026. 3 years have data for under 90 percent of days and are left out of rankings: 1974, 2000, 2026. 1974: 260 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 365 of 365 days1978: 365 of 365 days1979: 365 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 365 of 365 days1984: 366 of 366 days1985: 365 of 365 days1986: 365 of 365 days1987: 364 of 365 days1988: 366 of 366 days1989: 365 of 365 days1990: 364 of 365 days1991: 347 of 365 days1992: 365 of 366 days1993: 365 of 365 days1994: 363 of 365 days1995: 365 of 365 days1996: 335 of 366 days1997: 365 of 365 days1998: 363 of 365 days1999: 333 of 365 days2000: 304 of 366 days2001: 365 of 365 days2002: 365 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 365 of 365 days2007: 365 of 365 days2008: 362 of 366 days2009: 365 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 364 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 366 of 366 days2017: 365 of 365 days2018: 365 of 365 days2019: 365 of 365 days2020: 366 of 366 days2021: 365 of 365 days2022: 364 of 365 days2023: 365 of 365 days2024: 366 of 366 days2025: 365 of 365 days2026: 284 of 365 days19801990200020102020
53 years of record at Lancaster, 1974 to 2026. 3 years have data for under 90 percent of days and are left out of rankings: 1974, 2000, 2026.
Days with data per year at Lancaster
YearDays with dataShare of yearComplete
197426071%No
1975365100%Yes
1976366100%Yes
1977365100%Yes
1978365100%Yes
1979365100%Yes
1980366100%Yes
1981365100%Yes
1982365100%Yes
1983365100%Yes
1984366100%Yes
1985365100%Yes
1986365100%Yes
1987364100%Yes
1988366100%Yes
1989365100%Yes
1990364100%Yes
199134795%Yes
1992365100%Yes
1993365100%Yes
199436399%Yes
1995365100%Yes
199633592%Yes
1997365100%Yes
199836399%Yes
199933391%Yes
200030483%No
2001365100%Yes
2002365100%Yes
2003365100%Yes
2004366100%Yes
2005365100%Yes
2006365100%Yes
2007365100%Yes
200836299%Yes
2009365100%Yes
2010365100%Yes
2011365100%Yes
2012366100%Yes
2013364100%Yes
2014365100%Yes
2015365100%Yes
2016366100%Yes
2017365100%Yes
2018365100%Yes
2019365100%Yes
2020366100%Yes
2021365100%Yes
2022364100%Yes
2023365100%Yes
2024366100%Yes
2025365100%Yes
202628478%No

Latest Records

20
Latest records at Lancaster
DateStationRecordValueBeat old record byOld record stoodSignificance
10 October 2026Lancaster, USdaily high min (Provisional)17.2 C (63.0 F)1.1 C (2.0 F)3 years7 of 100 (Routine)
8 October 2026Lancaster, USdaily high max (Tie, Provisional)36.1 C (97.0 F)tie29 years3 of 100 (Routine)
8 October 2026Lancaster, USdaily high min (Tie, Provisional)16.1 C (61.0 F)tie8 years1 of 100 (Routine)
11 September 2026Lancaster, USdaily high min (Provisional)24.4 C (75.9 F)3.3 C (5.9 F)52 years28 of 100 (Routine)
10 September 2026Lancaster, USdaily high max (Provisional)40.6 C (105.1 F)0.6 C (1.1 F)47 years20 of 100 (Routine)
10 September 2026Lancaster, USmonthly high min (Tie, Provisional)25.0 C (77.0 F)tie30 years6 of 100 (Routine)
6 September 2026Lancaster, USdaily rain (Provisional)8.1 mm (0.32 in)8.1 mm (0.32 in)52 years20 of 100 (Routine)
6 September 2026Lancaster, USdaily low max (Tie, Provisional)23.9 C (75.0 F)tie48 years4 of 100 (Routine)
27 August 2026Lancaster, USdaily high min (Tie, Provisional)22.8 C (73.0 F)tie37 years4 of 100 (Routine)
26 August 2026Lancaster, USdaily high max (Provisional)41.7 C (107.1 F)0.6 C (1.1 F)24 years13 of 100 (Routine)
1 August 2026Lancaster, USdaily high max41.7 C (107.1 F)0.6 C (1.1 F)32 years15 of 100 (Routine)
15 July 2026Lancaster, USdaily high min (Tie)25.6 C (78.1 F)tie20 years2 of 100 (Routine)
13 June 2026Lancaster, USdaily high min23.3 C (73.9 F)1.6 C (2.9 F)40 years21 of 100 (Routine)
19 May 2026Lancaster, USdaily low min2.8 C (37.0 F)1.6 C (2.9 F)52 years24 of 100 (Routine)
12 May 2026Lancaster, USdaily high max (Tie)36.7 C (98.1 F)tie12 years2 of 100 (Routine)
11 May 2026Lancaster, USdaily high max36.7 C (98.1 F)0.6 C (1.1 F)20 years12 of 100 (Routine)
10 May 2026Lancaster, USdaily high max36.7 C (98.1 F)1.1 C (2.0 F)0 years6 of 100 (Routine)
8 May 2026Lancaster, USdaily high min (Tie)18.9 C (66.0 F)tie33 years3 of 100 (Routine)
29 April 2026Lancaster, USdaily low min3.3 C (37.9 F)0.6 C (1.1 F)29 years14 of 100 (Routine)
28 April 2026Lancaster, USdaily low min0.0 C (32.0 F)2.2 C (4.0 F)36 years21 of 100 (Routine)

Climate Trend

48 complete years, 1975 to 2025
Annual mean temperature at Lancaster as warming stripes, 1975 to 2025 One stripe for each of 48 complete years at Lancaster, 1975 to 2025. Blue stripes are years cooler than the station's own mean of 16.6 C (61.8 F); red stripes are warmer. The coolest year was 1998, at 15.1 C (59.1 F), and the warmest was 2021, at 17.8 C (64.1 F). The strongest colour marks a difference of 1.6 C (2.9 F). 1975: 15.3 C, -1.3 C from the station mean1976: 15.6 C, -1.0 C from the station mean1977: 16.3 C, -0.3 C from the station mean1978: 15.9 C, -0.7 C from the station mean1979: 15.7 C, -0.8 C from the station mean1980: 16.1 C, -0.5 C from the station mean1981: 17.3 C, +0.7 C from the station mean1982: 15.3 C, -1.3 C from the station mean1983: 15.7 C, -0.8 C from the station mean1984: 16.2 C, -0.4 C from the station mean1985: 15.9 C, -0.6 C from the station mean1986: 16.4 C, -0.2 C from the station mean1987: 16.1 C, -0.5 C from the station mean1988: 16.4 C, -0.2 C from the station mean1989: 16.3 C, -0.3 C from the station mean1990: 16.1 C, -0.5 C from the station mean1991: 15.9 C, -0.6 C from the station mean1992: 16.3 C, -0.3 C from the station mean1993: 15.8 C, -0.8 C from the station mean1994: 16.2 C, -0.3 C from the station mean1995: 16.6 C, 0.0 C from the station mean1997: 16.8 C, +0.3 C from the station mean1998: 15.1 C, -1.5 C from the station mean2001: 17.2 C, +0.6 C from the station mean2002: 16.8 C, +0.2 C from the station mean2003: 17.0 C, +0.5 C from the station mean2004: 16.8 C, +0.3 C from the station mean2005: 16.6 C, 0.0 C from the station mean2006: 16.5 C, -0.1 C from the station mean2007: 17.1 C, +0.5 C from the station mean2008: 17.2 C, +0.6 C from the station mean2009: 16.5 C, -0.1 C from the station mean2010: 16.2 C, -0.4 C from the station mean2011: 15.8 C, -0.8 C from the station mean2012: 17.4 C, +0.8 C from the station mean2013: 16.9 C, +0.3 C from the station mean2014: 17.7 C, +1.2 C from the station mean2015: 17.3 C, +0.7 C from the station mean2016: 17.8 C, +1.2 C from the station mean2017: 17.8 C, +1.2 C from the station mean2018: 17.5 C, +0.9 C from the station mean2019: 16.0 C, -0.5 C from the station mean2020: 17.2 C, +0.7 C from the station mean2021: 17.8 C, +1.3 C from the station mean2022: 17.7 C, +1.1 C from the station mean2023: 16.4 C, -0.2 C from the station mean2024: 17.6 C, +1.0 C from the station mean2025: 17.7 C, +1.1 C from the station mean19751980198519901995200020052010201520202025
One stripe for each of 48 complete years at Lancaster, 1975 to 2025. Blue stripes are years cooler than the station's own mean of 16.6 C (61.8 F); red stripes are warmer. The coolest year was 1998, at 15.1 C (59.1 F), and the warmest was 2021, at 17.8 C (64.1 F). The strongest colour marks a difference of 1.6 C (2.9 F).
Annual mean temperature at Lancaster as warming stripes, 1975 to 2025
YearAnnual mean temperatureDifference from the station mean
197515.3 C-1.33 C
197615.6 C-0.99 C
197716.3 C-0.32 C
197815.9 C-0.69 C
197915.7 C-0.85 C
198016.1 C-0.51 C
198117.3 C+0.73 C
198215.3 C-1.33 C
198315.7 C-0.84 C
198416.2 C-0.37 C
198515.9 C-0.64 C
198616.4 C-0.23 C
198716.1 C-0.51 C
198816.4 C-0.17 C
198916.3 C-0.26 C
199016.1 C-0.52 C
199115.9 C-0.64 C
199216.3 C-0.29 C
199315.8 C-0.79 C
199416.2 C-0.35 C
199516.6 C+0.04 C
199716.8 C+0.26 C
199815.1 C-1.52 C
200117.2 C+0.61 C
200216.8 C+0.17 C
200317.0 C+0.46 C
200416.8 C+0.26 C
200516.6 C+0.02 C
200616.5 C-0.06 C
200717.1 C+0.50 C
200817.2 C+0.58 C
200916.5 C-0.08 C
201016.2 C-0.43 C
201115.8 C-0.80 C
201217.4 C+0.82 C
201316.9 C+0.33 C
201417.7 C+1.15 C
201517.3 C+0.69 C
201617.8 C+1.23 C
201717.8 C+1.17 C
201817.5 C+0.89 C
201916.0 C-0.54 C
202017.2 C+0.65 C
202117.8 C+1.26 C
202217.7 C+1.14 C
202316.4 C-0.19 C
202417.6 C+1.04 C
202517.7 C+1.08 C

The annual mean temperature here has risen by 0.3 C (0.2 to 0.4) per decade over 1975 to 2025. In Fahrenheit: 0.6 F (0.4 to 0.8) per decade. The slope is a straight line fitted to 48 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Lancaster
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 decade1975 to 202548Rise
Mean daily maximum0.5 C (0.4 to 0.7) per decade1.0 F (0.7 to 1.2) per decade1975 to 202548Rise
Mean daily minimum0.15 C (0.04 to 0.26) per decade0.3 F (0.1 to 0.5) per decade1975 to 202548Rise

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 2026
Yearly extremes at Lancaster: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)46.1 C (115.0 F)201342.8 C (109.0 F)53
Coldest night (TNn)-16.7 C (1.9 F)1984-8.9 C (16.0 F)53
Wettest day (Rx1day)91.2 mm (3.6 in)202333.0 mm (1.3 in)53
Wettest five days (Rx5day)143.7 mm (5.7 in)198355.3 mm (2.2 in)53
Longest dry spell (CDD)261 days2024148 days53

Hottest day (TXx)

Hottest day (TXx) at Lancaster by year The hottest day of the year at Lancaster, 1974 to 2026. The record is 46.1 C (115.0 F) in 2013, marked on the chart; the median year is 42.8 C (109.0 F). 38404244464819801990200020102020Record: 46.1 C (115.0 F) in 2013
The hottest day of the year at Lancaster, 1974 to 2026. The record is 46.1 C (115.0 F) in 2013, marked on the chart; the median year is 42.8 C (109.0 F).
Hottest day (TXx) at Lancaster by year
YearHottest day (TXx)
197440.0 C (104.0 F)
197543.3 C (109.9 F)
197640.6 C (105.1 F)
197740.0 C (104.0 F)
197841.7 C (107.1 F)
197941.1 C (106.0 F)
198041.7 C (107.1 F)
198143.3 C (109.9 F)
198241.1 C (106.0 F)
198340.0 C (104.0 F)
198442.2 C (108.0 F)
198542.8 C (109.0 F)
198641.7 C (107.1 F)
198741.7 C (107.1 F)
198841.7 C (107.1 F)
198943.3 C (109.9 F)
199040.6 C (105.1 F)
199142.8 C (109.0 F)
199239.4 C (102.9 F)
199341.1 C (106.0 F)
199442.8 C (109.0 F)
199542.8 C (109.0 F)
199642.2 C (108.0 F)
199742.8 C (109.0 F)
199842.8 C (109.0 F)
199940.0 C (104.0 F)
200041.1 C (106.0 F)
200143.3 C (109.9 F)
200244.4 C (111.9 F)
200342.8 C (109.0 F)
200442.2 C (108.0 F)
200543.3 C (109.9 F)
200643.9 C (111.0 F)
200745.0 C (113.0 F)
200844.4 C (111.9 F)
200943.9 C (111.0 F)
201042.2 C (108.0 F)
201141.7 C (107.1 F)
201243.9 C (111.0 F)
201346.1 C (115.0 F)
201441.1 C (106.0 F)
201542.2 C (108.0 F)
201644.4 C (111.9 F)
201743.3 C (109.9 F)
201842.8 C (109.0 F)
201941.7 C (107.1 F)
202044.4 C (111.9 F)
202145.0 C (113.0 F)
202245.0 C (113.0 F)
202344.4 C (111.9 F)
202446.1 C (115.0 F)
202541.7 C (107.1 F)
202641.7 C (107.1 F)

Coldest night (TNn)

Coldest night (TNn) at Lancaster by year The coldest night of the year at Lancaster, 1974 to 2026. The record is -16.7 C (1.9 F) in 1984, marked on the chart; the median year is -8.9 C (16.0 F). -20-15-10-519801990200020102020Record: -16.7 C (1.9 F) in 1984
The coldest night of the year at Lancaster, 1974 to 2026. The record is -16.7 C (1.9 F) in 1984, marked on the chart; the median year is -8.9 C (16.0 F).
Coldest night (TNn) at Lancaster by year
YearColdest night (TNn)
1974-8.9 C (16.0 F)
1975-10.0 C (14.0 F)
1976-12.2 C (10.0 F)
1977-5.0 C (23.0 F)
1978-11.7 C (10.9 F)
1979-11.7 C (10.9 F)
1980-8.3 C (17.1 F)
1981-6.7 C (19.9 F)
1982-7.8 C (18.0 F)
1983-6.7 C (19.9 F)
1984-16.7 C (1.9 F)
1985-7.8 C (18.0 F)
1986-7.2 C (19.0 F)
1987-11.1 C (12.0 F)
1988-10.0 C (14.0 F)
1989-11.7 C (10.9 F)
1990-16.1 C (3.0 F)
1991-8.3 C (17.1 F)
1992-7.8 C (18.0 F)
1993-8.9 C (16.0 F)
1994-11.1 C (12.0 F)
1995-8.3 C (17.1 F)
1996-5.0 C (23.0 F)
1997-8.9 C (16.0 F)
1998-13.3 C (8.1 F)
1999-7.2 C (19.0 F)
2000-7.8 C (18.0 F)
2001-7.8 C (18.0 F)
2002-8.9 C (16.0 F)
2003-10.0 C (14.0 F)
2004-9.4 C (15.1 F)
2005-9.4 C (15.1 F)
2006-11.1 C (12.0 F)
2007-16.1 C (3.0 F)
2008-7.2 C (19.0 F)
2009-7.2 C (19.0 F)
2010-8.3 C (17.1 F)
2011-10.6 C (12.9 F)
2012-12.2 C (10.0 F)
2013-13.3 C (8.1 F)
2014-7.1 C (19.2 F)
2015-9.9 C (14.2 F)
2016-12.1 C (10.2 F)
2017-10.5 C (13.1 F)
2018-9.3 C (15.3 F)
2019-8.2 C (17.2 F)
2020-10.5 C (13.1 F)
2021-7.7 C (18.1 F)
2022-7.7 C (18.1 F)
2023-7.7 C (18.1 F)
2024-8.2 C (17.2 F)
2025-9.3 C (15.3 F)
2026-5.6 C (21.9 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Lancaster by year The wettest day of the year at Lancaster, 1974 to 2026. The record is 91.2 mm (3.6 in) in 2023, marked on the chart; the median year is 33.0 mm (1.3 in). 02040608010019801990200020102020Record: 91.2 mm (3.6 in) in 2023
The wettest day of the year at Lancaster, 1974 to 2026. The record is 91.2 mm (3.6 in) in 2023, marked on the chart; the median year is 33.0 mm (1.3 in).
Wettest day (Rx1day) at Lancaster by year
YearWettest day (Rx1day)
197427.7 mm (1.1 in)
197511.7 mm (0.5 in)
197628.4 mm (1.1 in)
197735.8 mm (1.4 in)
197835.6 mm (1.4 in)
197930.2 mm (1.2 in)
198069.9 mm (2.8 in)
198151.8 mm (2.0 in)
198242.2 mm (1.7 in)
198374.4 mm (2.9 in)
198439.1 mm (1.5 in)
198516.8 mm (0.7 in)
198621.3 mm (0.8 in)
198738.6 mm (1.5 in)
198835.8 mm (1.4 in)
198922.9 mm (0.9 in)
199013.0 mm (0.5 in)
199132.8 mm (1.3 in)
199254.4 mm (2.1 in)
199358.4 mm (2.3 in)
199414.5 mm (0.6 in)
199538.9 mm (1.5 in)
199617.3 mm (0.7 in)
199730.5 mm (1.2 in)
199848.5 mm (1.9 in)
199918.3 mm (0.7 in)
200041.4 mm (1.6 in)
200131.5 mm (1.2 in)
200216.3 mm (0.6 in)
200367.8 mm (2.7 in)
200462.5 mm (2.5 in)
200539.6 mm (1.6 in)
200615.0 mm (0.6 in)
200712.7 mm (0.5 in)
200825.1 mm (1.0 in)
200915.5 mm (0.6 in)
201030.2 mm (1.2 in)
201137.6 mm (1.5 in)
201220.1 mm (0.8 in)
201333.0 mm (1.3 in)
201442.4 mm (1.7 in)
201540.4 mm (1.6 in)
201620.6 mm (0.8 in)
201736.3 mm (1.4 in)
201837.1 mm (1.5 in)
201948.0 mm (1.9 in)
202029.0 mm (1.1 in)
202129.7 mm (1.2 in)
202214.5 mm (0.6 in)
202391.2 mm (3.6 in)
202437.8 mm (1.5 in)
202553.6 mm (2.1 in)
202622.1 mm (0.9 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Lancaster by year The wettest five days of the year at Lancaster, 1974 to 2026. The record is 143.7 mm (5.7 in) in 1983, marked on the chart; the median year is 55.3 mm (2.2 in). 05010015019801990200020102020Record: 143.7 mm (5.7 in) in 1983
The wettest five days of the year at Lancaster, 1974 to 2026. The record is 143.7 mm (5.7 in) in 1983, marked on the chart; the median year is 55.3 mm (2.2 in).
Wettest five days (Rx5day) at Lancaster by year
YearWettest five days (Rx5day)
197430.7 mm (1.2 in)
197522.6 mm (0.9 in)
197634.7 mm (1.4 in)
197789.6 mm (3.5 in)
197872.7 mm (2.9 in)
197958.9 mm (2.3 in)
1980136.8 mm (5.4 in)
198173.1 mm (2.9 in)
198257.7 mm (2.3 in)
1983143.7 mm (5.7 in)
198486.0 mm (3.4 in)
198517.8 mm (0.7 in)
198646.5 mm (1.8 in)
198767.1 mm (2.6 in)
198835.8 mm (1.4 in)
198938.9 mm (1.5 in)
199017.0 mm (0.7 in)
199160.5 mm (2.4 in)
1992120.6 mm (4.7 in)
199395.7 mm (3.8 in)
199418.0 mm (0.7 in)
199555.3 mm (2.2 in)
199627.6 mm (1.1 in)
199755.9 mm (2.2 in)
199875.2 mm (3.0 in)
199927.2 mm (1.1 in)
200046.2 mm (1.8 in)
200162.0 mm (2.4 in)
200228.8 mm (1.1 in)
200386.9 mm (3.4 in)
200492.0 mm (3.6 in)
2005106.4 mm (4.2 in)
200622.4 mm (0.9 in)
200712.7 mm (0.5 in)
200861.3 mm (2.4 in)
200940.7 mm (1.6 in)
201091.5 mm (3.6 in)
201141.7 mm (1.6 in)
201220.9 mm (0.8 in)
201336.8 mm (1.4 in)
201450.3 mm (2.0 in)
201558.7 mm (2.3 in)
201633.2 mm (1.3 in)
201738.8 mm (1.5 in)
201840.1 mm (1.6 in)
201962.0 mm (2.4 in)
202063.9 mm (2.5 in)
202131.7 mm (1.2 in)
202231.7 mm (1.2 in)
202393.0 mm (3.7 in)
202470.0 mm (2.8 in)
202564.0 mm (2.5 in)
202635.6 mm (1.4 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Lancaster by year The longest dry spell of the year at Lancaster, 1974 to 2026. The record is 261 days in 2024, marked on the chart; the median year is 148 days. 5010015020025030019801990200020102020Record: 261 days in 2024
The longest dry spell of the year at Lancaster, 1974 to 2026. The record is 261 days in 2024, marked on the chart; the median year is 148 days.
Longest dry spell (CDD) at Lancaster by year
YearLongest dry spell (CDD)
197478 days
1975153 days
1976121 days
197798 days
197899 days
1979142 days
1980235 days
1981132 days
1982149 days
1983107 days
1984103 days
1985187 days
1986116 days
1987106 days
1988110 days
1989126 days
1990174 days
1991102 days
1992106 days
1993126 days
1994148 days
1995189 days
1996229 days
1997241 days
1998109 days
1999117 days
200063 days
2001192 days
2002229 days
200392 days
2004196 days
200579 days
2006182 days
2007178 days
2008161 days
2009259 days
2010167 days
201192 days
2012243 days
2013198 days
2014188 days
201566 days
2016202 days
2017170 days
2018219 days
2019117 days
2020210 days
2021223 days
202272 days
2023107 days
2024261 days
2025136 days
2026158 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

48 years with a frost

Across 48 years with a frost, the median last spring frost at Lancaster falls on 5 April and the median first autumn frost on 29 October, which leaves a median of 213 days between them.

Fitted over all years, the growing season changes by -3.1 days per decade at this station.

Frost dates and growing season at Lancaster
MeasureMedian, all yearsEarliest periodRecent period (1993 to 2025)Recent against earliestFitted trend
Last spring frost5 Apriln/a12 Apriln/a+2.6 days per decade
First autumn frost29 Octobern/a27 Octobern/a-0.6 days per decade
Growing days213 daysn/a204 daysn/a-3.1 days per decade

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

50 years, 1975 to 2025

A day with at least 32.3 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 93.0 mm (3.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Lancaster: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years32.3 mm (1.3 in)
5 years48.2 mm (1.9 in)
10 years58.9 mm (2.3 in)
25 years72.5 mm (2.9 in)
50 years82.7 mm (3.3 in)
100 years93.0 mm (3.7 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 1975 to 2025.

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: 91.2 mm (3.6 in) in 2023; 74.4 mm (2.9 in) in 1983; 69.9 mm (2.8 in) in 1980.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Climate Twins

2011 to 2025 against 1961 to 1990

Over 2011 to 2025, Lancaster had a mean temperature of 17.2 C (63.0 F) and 144.1 mm (5.7 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Barstow (United States, 109 km away), Searchlight (United States, 310 km away) and Desert Nwr (United States, 320 km away).

Climate twins of Lancaster: stations whose 1961 to 1990 climate is closest to its 2011 to 2025 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
BarstowUnited States109 km (68 mi)17.6 C (63.7 F)93.5 mm (3.7 in)0.61
SearchlightUnited States310 km (193 mi)17.4 C (63.4 F)200.2 mm (7.9 in)0.61
Desert NwrUnited States320 km (199 mi)17.0 C (62.6 F)112.9 mm (4.4 in)0.67

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

  • Data for Lancaster standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Lancaster 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 (2026-10-14).