Built 2026-10-16 (16 October 2026)

Watsonville Wtr Wks Weather Records (USC00049473)

Record envelope, standing records and threshold days for Watsonville Wtr Wks (USC00049473), California, United States, with 119 years of record.

Key Facts for Watsonville Wtr Wks

  • Watsonville Wtr Wks (USC00049473) is a weather station in California, United States at 36.93 latitude and -121.77 longitude, 29 m (95 ft) above sea level.
  • The station reports from 1908 to 2026, 119 years of record.
  • 1,464 records set at Watsonville Wtr Wks still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Watsonville Wtr Wks tied a daily record high minimum temperature of 15.0 C (59.0 F) on 5 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, 36.93 latitude, -121.77 longitude.
  • Elevation: 29 m (95 ft).
  • Period of record: 1908 to 2026, 119 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

14 days at or beyond a record
Daily record high and record low at Watsonville Wtr Wks, with 2026 drawn through them The band shows the record high and record low for each calendar day at Watsonville Wtr Wks. The lines show the 2026 daily maximum and minimum. 14 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 Watsonville Wtr Wks. The lines show the 2026 daily maximum and minimum. 14 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Watsonville Wtr Wks, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan30.0 C (86.0 F)-6.7 C (19.9 F)25.6 C (78.1 F)1.1 C (34.0 F)
Feb30.0 C (86.0 F)-5.0 C (23.0 F)29.4 C (84.9 F)1.1 C (34.0 F)
Mar35.0 C (95.0 F)-4.4 C (24.1 F)35.0 C (95.0 F)5.6 C (42.1 F)
Apr38.3 C (100.9 F)-5.6 C (21.9 F)30.0 C (86.0 F)6.1 C (43.0 F)
May37.2 C (99.0 F)-3.3 C (26.1 F)29.4 C (84.9 F)8.3 C (46.9 F)
Jun40.0 C (104.0 F)-0.6 C (30.9 F)27.8 C (82.0 F)9.4 C (48.9 F)
Jul37.8 C (100.0 F)0.0 C (32.0 F)31.7 C (89.1 F)11.1 C (52.0 F)
Aug39.4 C (102.9 F)-1.1 C (30.0 F)27.2 C (81.0 F)11.7 C (53.1 F)
Sep43.3 C (109.9 F)0.0 C (32.0 F)30.6 C (87.1 F)10.0 C (50.0 F)
Oct41.1 C (106.0 F)-5.6 C (21.9 F)35.6 C (96.1 F)10.6 C (51.1 F)
Nov34.4 C (93.9 F)-5.6 C (21.9 F)n/an/a
Dec28.9 C (84.0 F)-11.1 C (12.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Watsonville Wtr Wks by the year they were set 1,464 records at Watsonville Wtr Wks still stand. 1912 holds the most, with 129. 0501001501908: 411909: 551910: 321911: 501912: 1291913: 351914: 281915: 411916: 221917: 201918: 141919: 151920: 71921: 81922: 81923: 91924: 171925: 11927: 71928: 61929: 181930: 71931: 221932: 81933: 61934: 31935: 101936: 61937: 111941: 21942: 91943: 71944: 41945: 41946: 101947: 51948: 111949: 211950: 171951: 61952: 41953: 41954: 91955: 161956: 161957: 151958: 101959: 81960: 41961: 71962: 181963: 81964: 101965: 51966: 71967: 101968: 61969: 61970: 161971: 51972: 101973: 131974: 81975: 71976: 141977: 91978: 81979: 41980: 91981: 61982: 111983: 151984: 91985: 111986: 81987: 91988: 101989: 141990: 111991: 31992: 101993: 91994: 71995: 91996: 141997: 81998: 81999: 32000: 92001: 112002: 32003: 62004: 62005: 62006: 92007: 72008: 92009: 152010: 102011: 72012: 92013: 52014: 262015: 352016: 332017: 212018: 92019: 72020: 82021: 42022: 62023: 82024: 32025: 32026: 161908192019331948196019721984199620082020
1,464 records at Watsonville Wtr Wks still stand. 1912 holds the most, with 129.
Standing records at Watsonville Wtr Wks by the year they were set
Year setStanding records
190841
190955
191032
191150
1912129
191335
191428
191541
191622
191720
191814
191915
19207
19218
19228
19239
192417
19251
19277
19286
192918
19307
193122
19328
19336
19343
193510
19366
193711
19412
19429
19437
19444
19454
194610
19475
194811
194921
195017
19516
19524
19534
19549
195516
195616
195715
195810
19598
19604
19617
196218
19638
196410
19655
19667
196710
19686
19696
197016
19715
197210
197313
19748
19757
197614
19779
19788
19794
19809
19816
198211
198315
19849
198511
19868
19879
198810
198914
199011
19913
199210
19939
19947
19959
199614
19978
19988
19993
20009
200111
20023
20036
20046
20056
20069
20077
20089
200915
201010
20117
20129
20135
201426
201535
201633
201721
20189
20197
20208
20214
20226
20238
20243
20253
202616

All-Time Record Progression

7 new records
When Watsonville Wtr Wks set new all-time records 7 all-time records were set at Watsonville Wtr Wks between 19 September 1959 and 3 September 2017. Each dot is a new record. Record daily precipitationRecord high maximum temperatureRecord low minimum temperatureRecord daily snowfall19 September 1959: Record daily precipitation 149.9 mm (5.9 in)2 October 1980: Record high maximum temperature 41.1 C (106.0 F)22 December 1990: Record low minimum temperature -11.1 C (12.0 F)14 February 2000: Record daily precipitation 150.6 mm (5.9 in)2 January 2009: Record daily snowfall 0.3 cm (0.1 in)27 September 2016: Record high maximum temperature 41.7 C (107.1 F)3 September 2017: Record high maximum temperature 43.3 C (109.9 F)196019701980199020002010
7 all-time records were set at Watsonville Wtr Wks between 19 September 1959 and 3 September 2017. Each dot is a new record.
When Watsonville Wtr Wks set new all-time records
DateKindDetail
1959-09-19Record daily precipitationRecord daily precipitation 149.9 mm (5.9 in)
1980-10-02Record high maximum temperatureRecord high maximum temperature 41.1 C (106.0 F)
1990-12-22Record low minimum temperatureRecord low minimum temperature -11.1 C (12.0 F)
2000-02-14Record daily precipitationRecord daily precipitation 150.6 mm (5.9 in)
2009-01-02Record daily snowfallRecord daily snowfall 0.3 cm (0.1 in)
2016-09-27Record high maximum temperatureRecord high maximum temperature 41.7 C (107.1 F)
2017-09-03Record high maximum temperatureRecord high maximum temperature 43.3 C (109.9 F)

Wettest Day of Each Month

Feb: 150.6 mm (5.9 in)
Record daily precipitation for each month at Watsonville Wtr Wks The wettest day on record for each calendar month at Watsonville Wtr Wks. The most was 150.6 mm (5.9 in) on 14 February 2000. 050100150200 Jan: 107.4 mm (4.2 in), 24 January 2000 Jan Feb: 150.6 mm (5.9 in), 14 February 2000 Feb Mar: 84.3 mm (3.3 in), 16 March 1967 Mar Apr: 72.4 mm (2.9 in), 28 April 1983 Apr May: 56.1 mm (2.2 in), 16 May 1996 May Jun: 31.8 mm (1.3 in), 2 June 1967 Jun Jul: 29.5 mm (1.2 in), 9 July 1974 Jul Aug: 19.1 mm (0.8 in), 26 August 1935 Aug Sep: 149.9 mm (5.9 in), 19 September 1959 Sep Oct: 125.0 mm (4.9 in), 14 October 2009 Oct Nov: 91.2 mm (3.6 in), 11 November 1983 Nov Dec: 103.6 mm (4.1 in), 24 December 1921 Dec
The wettest day on record for each calendar month at Watsonville Wtr Wks. The most was 150.6 mm (5.9 in) on 14 February 2000.
Record daily precipitation for each month at Watsonville Wtr Wks
MonthRecord daily precipitation (mm)Date
Jan107.4 mm (4.2 in)24 January 2000
Feb150.6 mm (5.9 in)14 February 2000
Mar84.3 mm (3.3 in)16 March 1967
Apr72.4 mm (2.9 in)28 April 1983
May56.1 mm (2.2 in)16 May 1996
Jun31.8 mm (1.3 in)2 June 1967
Jul29.5 mm (1.2 in)9 July 1974
Aug19.1 mm (0.8 in)26 August 1935
Sep149.9 mm (5.9 in)19 September 1959
Oct125.0 mm (4.9 in)14 October 2009
Nov91.2 mm (3.6 in)11 November 1983
Dec103.6 mm (4.1 in)24 December 1921

Period of Record Coverage

1908 to 2026
Days with data per year at Watsonville Wtr Wks 115 years of record at Watsonville Wtr Wks, 1908 to 2026. 13 years have data for under 90 percent of days and are left out of rankings: 1918, 1925, 1937, 1941, 1944, 1947, 1950, 1951 and others. 1908: 366 of 366 days1909: 365 of 365 days1910: 363 of 365 days1911: 365 of 365 days1912: 366 of 366 days1913: 364 of 365 days1914: 365 of 365 days1915: 364 of 365 days1916: 366 of 366 days1917: 361 of 365 days1918: 245 of 365 days1919: 365 of 365 days1920: 365 of 366 days1921: 365 of 365 days1922: 365 of 365 days1923: 365 of 365 days1924: 365 of 366 days1925: 120 of 365 days1927: 334 of 365 days1928: 366 of 366 days1929: 363 of 365 days1930: 364 of 365 days1931: 365 of 365 days1932: 366 of 366 days1933: 365 of 365 days1934: 365 of 365 days1935: 365 of 365 days1936: 366 of 366 days1937: 212 of 365 days1941: 189 of 365 days1942: 355 of 365 days1943: 346 of 365 days1944: 272 of 366 days1945: 336 of 365 days1946: 346 of 365 days1947: 312 of 365 days1948: 341 of 366 days1949: 338 of 365 days1950: 323 of 365 days1951: 320 of 365 days1952: 356 of 366 days1953: 358 of 365 days1954: 363 of 365 days1955: 365 of 365 days1956: 334 of 366 days1957: 284 of 365 days1958: 358 of 365 days1959: 358 of 365 days1960: 362 of 366 days1961: 365 of 365 days1962: 364 of 365 days1963: 365 of 365 days1964: 366 of 366 days1965: 365 of 365 days1966: 365 of 365 days1967: 365 of 365 days1968: 364 of 366 days1969: 365 of 365 days1970: 365 of 365 days1971: 365 of 365 days1972: 366 of 366 days1973: 365 of 365 days1974: 365 of 365 days1975: 364 of 365 days1976: 366 of 366 days1977: 363 of 365 days1978: 365 of 365 days1979: 313 of 365 days1980: 343 of 366 days1981: 363 of 365 days1982: 334 of 365 days1983: 365 of 365 days1984: 365 of 366 days1985: 365 of 365 days1986: 365 of 365 days1987: 363 of 365 days1988: 366 of 366 days1989: 361 of 365 days1990: 360 of 365 days1991: 364 of 365 days1992: 364 of 366 days1993: 364 of 365 days1994: 363 of 365 days1995: 358 of 365 days1996: 365 of 366 days1997: 362 of 365 days1998: 345 of 365 days1999: 173 of 365 days2000: 324 of 366 days2001: 333 of 365 days2002: 365 of 365 days2003: 365 of 365 days2004: 365 of 366 days2005: 365 of 365 days2006: 365 of 365 days2007: 363 of 365 days2008: 366 of 366 days2009: 363 of 365 days2010: 364 of 365 days2011: 364 of 365 days2012: 364 of 366 days2013: 365 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 366 of 366 days2017: 365 of 365 days2018: 365 of 365 days2019: 364 of 365 days2020: 364 of 366 days2021: 365 of 365 days2022: 365 of 365 days2023: 365 of 365 days2024: 366 of 366 days2025: 365 of 365 days2026: 260 of 365 days19201935195019651980199520102025
115 years of record at Watsonville Wtr Wks, 1908 to 2026. 13 years have data for under 90 percent of days and are left out of rankings: 1918, 1925, 1937, 1941, 1944, 1947, 1950, 1951 and others.
Days with data per year at Watsonville Wtr Wks
YearDays with dataShare of yearComplete
1908366100%Yes
1909365100%Yes
191036399%Yes
1911365100%Yes
1912366100%Yes
1913364100%Yes
1914365100%Yes
1915364100%Yes
1916366100%Yes
191736199%Yes
191824567%No
1919365100%Yes
1920365100%Yes
1921365100%Yes
1922365100%Yes
1923365100%Yes
1924365100%Yes
192512033%No
192733492%Yes
1928366100%Yes
192936399%Yes
1930364100%Yes
1931365100%Yes
1932366100%Yes
1933365100%Yes
1934365100%Yes
1935365100%Yes
1936366100%Yes
193721258%No
194118952%No
194235597%Yes
194334695%Yes
194427274%No
194533692%Yes
194634695%Yes
194731285%No
194834193%Yes
194933893%Yes
195032388%No
195132088%No
195235697%Yes
195335898%Yes
195436399%Yes
1955365100%Yes
195633491%Yes
195728478%No
195835898%Yes
195935898%Yes
196036299%Yes
1961365100%Yes
1962364100%Yes
1963365100%Yes
1964366100%Yes
1965365100%Yes
1966365100%Yes
1967365100%Yes
196836499%Yes
1969365100%Yes
1970365100%Yes
1971365100%Yes
1972366100%Yes
1973365100%Yes
1974365100%Yes
1975364100%Yes
1976366100%Yes
197736399%Yes
1978365100%Yes
197931386%No
198034394%Yes
198136399%Yes
198233492%Yes
1983365100%Yes
1984365100%Yes
1985365100%Yes
1986365100%Yes
198736399%Yes
1988366100%Yes
198936199%Yes
199036099%Yes
1991364100%Yes
199236499%Yes
1993364100%Yes
199436399%Yes
199535898%Yes
1996365100%Yes
199736299%Yes
199834595%Yes
199917347%No
200032489%No
200133391%Yes
2002365100%Yes
2003365100%Yes
2004365100%Yes
2005365100%Yes
2006365100%Yes
200736399%Yes
2008366100%Yes
200936399%Yes
2010364100%Yes
2011364100%Yes
201236499%Yes
2013365100%Yes
2014365100%Yes
2015365100%Yes
2016366100%Yes
2017365100%Yes
2018365100%Yes
2019364100%Yes
202036499%Yes
2021365100%Yes
2022365100%Yes
2023365100%Yes
2024366100%Yes
2025365100%Yes
202626071%No

Latest Records

20
Latest records at Watsonville Wtr Wks
DateStationRecordValueBeat old record byOld record stoodSignificance
5 October 2026Watsonville Wtr Wks, USdaily high min (Tie, Provisional)15.0 C (59.0 F)tie8 years3 of 100 (Routine)
29 August 2026Watsonville Wtr Wks, USdaily rain (Provisional)0.3 mm (0.01 in)0.3 mm (0.01 in)117 years20 of 100 (Routine)
22 July 2026Watsonville Wtr Wks, USdaily high max31.7 C (89.1 F)0.6 C (1.1 F)108 years41 of 100 (Notable)
22 July 2026Watsonville Wtr Wks, USdaily high min16.1 C (61.0 F)0.5 C (0.9 F)20 years18 of 100 (Routine)
24 June 2026Watsonville Wtr Wks, USdaily high min (Tie)13.9 C (57.0 F)tie116 years10 of 100 (Routine)
22 June 2026Watsonville Wtr Wks, USdaily rain0.3 mm (0.01 in)0.3 mm (0.01 in)117 years20 of 100 (Routine)
18 June 2026Watsonville Wtr Wks, USdaily high min (Tie)14.4 C (57.9 F)tie16 years3 of 100 (Routine)
21 April 2026Watsonville Wtr Wks, USdaily rain18.0 mm (0.7 in)0.7 mm (0.03 in)4 years11 of 100 (Routine)
1 April 2026Watsonville Wtr Wks, USdaily high min12.8 C (55.0 F)1.1 C (2.0 F)40 years25 of 100 (Routine)
30 March 2026Watsonville Wtr Wks, USdaily high max30.0 C (86.0 F)0.6 C (1.1 F)8 years13 of 100 (Routine)
28 March 2026Watsonville Wtr Wks, USdaily high max28.9 C (84.0 F)1.1 C (2.0 F)103 years42 of 100 (Notable)
24 March 2026Watsonville Wtr Wks, USdaily high max (Tie)28.3 C (82.9 F)tie96 years9 of 100 (Routine)
21 March 2026Watsonville Wtr Wks, USdaily high max33.9 C (93.0 F)5.6 C (10.1 F)111 years54 of 100 (Notable)
20 March 2026Watsonville Wtr Wks, USmonthly high max (Tie)35.0 C (95.0 F)tie112 years12 of 100 (Routine)
19 March 2026Watsonville Wtr Wks, USdaily high max33.9 C (93.0 F)5.6 C (10.1 F)112 years54 of 100 (Notable)
18 March 2026Watsonville Wtr Wks, USdaily high max33.9 C (93.0 F)0.6 C (1.1 F)112 years41 of 100 (Notable)
1 March 2026Watsonville Wtr Wks, USdaily high min13.3 C (55.9 F)1.1 C (2.0 F)40 years25 of 100 (Routine)
1 March 2026Watsonville Wtr Wks, USdaily high max27.8 C (82.0 F)0.6 C (1.1 F)9 years13 of 100 (Routine)
28 February 2026Watsonville Wtr Wks, USdaily high min13.9 C (57.0 F)1.7 C (3.1 F)31 years24 of 100 (Routine)
28 February 2026Watsonville Wtr Wks, USdaily high max29.4 C (84.9 F)1.1 C (2.0 F)6 years14 of 100 (Routine)

Climate Trend

96 complete years, 1908 to 2025
Annual mean temperature at Watsonville Wtr Wks as warming stripes, 1908 to 2025 One stripe for each of 96 complete years at Watsonville Wtr Wks, 1908 to 2025. Blue stripes are years cooler than the station's own mean of 13.7 C (56.6 F); red stripes are warmer. The coolest year was 1908, at 10.9 C (51.6 F), and the warmest was 2015, at 16.1 C (61.0 F). The strongest colour marks a difference of 2.8 C (5.0 F). 1908: 10.9 C, -2.8 C from the station mean1909: 11.5 C, -2.2 C from the station mean1910: 13.6 C, -0.1 C from the station mean1911: 12.1 C, -1.6 C from the station mean1912: 11.3 C, -2.4 C from the station mean1913: 13.8 C, +0.1 C from the station mean1914: 13.9 C, +0.2 C from the station mean1915: 14.1 C, +0.4 C from the station mean1916: 13.3 C, -0.4 C from the station mean1917: 13.7 C, 0.0 C from the station mean1919: 13.4 C, -0.3 C from the station mean1920: 13.8 C, +0.1 C from the station mean1921: 13.9 C, +0.2 C from the station mean1922: 13.6 C, 0.0 C from the station mean1923: 13.8 C, +0.1 C from the station mean1924: 13.5 C, -0.2 C from the station mean1928: 13.4 C, -0.3 C from the station mean1929: 13.2 C, -0.4 C from the station mean1930: 13.5 C, -0.1 C from the station mean1931: 13.9 C, +0.2 C from the station mean1932: 13.5 C, -0.2 C from the station mean1933: 13.1 C, -0.6 C from the station mean1934: 14.3 C, +0.6 C from the station mean1935: 13.3 C, -0.4 C from the station mean1936: 13.7 C, 0.0 C from the station mean1942: 13.2 C, -0.5 C from the station mean1943: 13.5 C, -0.2 C from the station mean1945: 12.9 C, -0.8 C from the station mean1946: 12.8 C, -0.9 C from the station mean1948: 12.4 C, -1.3 C from the station mean1950: 13.2 C, -0.5 C from the station mean1952: 12.8 C, -0.9 C from the station mean1953: 13.1 C, -0.6 C from the station mean1954: 13.1 C, -0.6 C from the station mean1955: 12.3 C, -1.4 C from the station mean1958: 14.3 C, +0.6 C from the station mean1959: 14.0 C, +0.3 C from the station mean1960: 13.0 C, -0.7 C from the station mean1961: 13.2 C, -0.4 C from the station mean1962: 13.1 C, -0.6 C from the station mean1963: 13.1 C, -0.6 C from the station mean1964: 12.7 C, -1.0 C from the station mean1965: 13.2 C, -0.5 C from the station mean1966: 13.3 C, -0.4 C from the station mean1967: 13.3 C, -0.3 C from the station mean1968: 13.5 C, -0.1 C from the station mean1969: 13.1 C, -0.5 C from the station mean1970: 13.4 C, -0.3 C from the station mean1971: 12.6 C, -1.1 C from the station mean1972: 13.3 C, -0.4 C from the station mean1973: 13.2 C, -0.5 C from the station mean1974: 13.0 C, -0.7 C from the station mean1975: 12.7 C, -1.0 C from the station mean1976: 14.0 C, +0.3 C from the station mean1977: 13.7 C, 0.0 C from the station mean1978: 14.1 C, +0.4 C from the station mean1981: 14.5 C, +0.8 C from the station mean1983: 15.1 C, +1.4 C from the station mean1984: 14.7 C, +1.0 C from the station mean1985: 13.9 C, +0.2 C from the station mean1986: 14.4 C, +0.7 C from the station mean1987: 14.0 C, +0.3 C from the station mean1988: 13.7 C, +0.1 C from the station mean1989: 13.6 C, -0.1 C from the station mean1990: 13.5 C, -0.2 C from the station mean1991: 12.3 C, -1.3 C from the station mean1992: 14.8 C, +1.1 C from the station mean1993: 14.3 C, +0.6 C from the station mean1994: 13.4 C, -0.3 C from the station mean1995: 14.8 C, +1.1 C from the station mean1996: 14.5 C, +0.8 C from the station mean1997: 15.0 C, +1.3 C from the station mean2002: 13.6 C, 0.0 C from the station mean2003: 14.3 C, +0.6 C from the station mean2004: 14.2 C, +0.5 C from the station mean2005: 14.4 C, +0.7 C from the station mean2006: 13.9 C, +0.2 C from the station mean2007: 13.8 C, +0.1 C from the station mean2008: 13.9 C, +0.2 C from the station mean2009: 14.2 C, +0.5 C from the station mean2010: 13.8 C, +0.1 C from the station mean2011: 13.7 C, 0.0 C from the station mean2012: 14.1 C, +0.4 C from the station mean2013: 14.5 C, +0.8 C from the station mean2014: 15.8 C, +2.1 C from the station mean2015: 16.1 C, +2.4 C from the station mean2016: 15.8 C, +2.1 C from the station mean2017: 15.1 C, +1.4 C from the station mean2018: 14.6 C, +0.9 C from the station mean2019: 14.8 C, +1.1 C from the station mean2020: 14.6 C, +0.9 C from the station mean2021: 14.1 C, +0.4 C from the station mean2022: 14.2 C, +0.5 C from the station mean2023: 13.9 C, +0.2 C from the station mean2024: 14.4 C, +0.7 C from the station mean2025: 14.4 C, +0.7 C from the station mean190819201930194019501960197019801990200020102020
One stripe for each of 96 complete years at Watsonville Wtr Wks, 1908 to 2025. Blue stripes are years cooler than the station's own mean of 13.7 C (56.6 F); red stripes are warmer. The coolest year was 1908, at 10.9 C (51.6 F), and the warmest was 2015, at 16.1 C (61.0 F). The strongest colour marks a difference of 2.8 C (5.0 F).
Annual mean temperature at Watsonville Wtr Wks as warming stripes, 1908 to 2025
YearAnnual mean temperatureDifference from the station mean
190810.9 C-2.77 C
190911.5 C-2.23 C
191013.6 C-0.11 C
191112.1 C-1.59 C
191211.3 C-2.36 C
191313.8 C+0.07 C
191413.9 C+0.18 C
191514.1 C+0.37 C
191613.3 C-0.37 C
191713.7 C0.00 C
191913.4 C-0.28 C
192013.8 C+0.13 C
192113.9 C+0.20 C
192213.6 C-0.04 C
192313.8 C+0.11 C
192413.5 C-0.18 C
192813.4 C-0.27 C
192913.2 C-0.44 C
193013.5 C-0.14 C
193113.9 C+0.22 C
193213.5 C-0.15 C
193313.1 C-0.63 C
193414.3 C+0.65 C
193513.3 C-0.39 C
193613.7 C+0.03 C
194213.2 C-0.50 C
194313.5 C-0.23 C
194512.9 C-0.79 C
194612.8 C-0.90 C
194812.4 C-1.25 C
195013.2 C-0.45 C
195212.8 C-0.91 C
195313.1 C-0.58 C
195413.1 C-0.56 C
195512.3 C-1.43 C
195814.3 C+0.57 C
195914.0 C+0.27 C
196013.0 C-0.67 C
196113.2 C-0.44 C
196213.1 C-0.59 C
196313.1 C-0.56 C
196412.7 C-0.97 C
196513.2 C-0.50 C
196613.3 C-0.40 C
196713.3 C-0.34 C
196813.5 C-0.14 C
196913.1 C-0.54 C
197013.4 C-0.30 C
197112.6 C-1.10 C
197213.3 C-0.35 C
197313.2 C-0.48 C
197413.0 C-0.67 C
197512.7 C-1.01 C
197614.0 C+0.31 C
197713.7 C-0.03 C
197814.1 C+0.42 C
198114.5 C+0.78 C
198315.1 C+1.37 C
198414.7 C+0.99 C
198513.9 C+0.22 C
198614.4 C+0.72 C
198714.0 C+0.33 C
198813.7 C+0.06 C
198913.6 C-0.07 C
199013.5 C-0.22 C
199112.3 C-1.34 C
199214.8 C+1.15 C
199314.3 C+0.63 C
199413.4 C-0.28 C
199514.8 C+1.14 C
199614.5 C+0.84 C
199715.0 C+1.32 C
200213.6 C-0.04 C
200314.3 C+0.65 C
200414.2 C+0.53 C
200514.4 C+0.67 C
200613.9 C+0.25 C
200713.8 C+0.07 C
200813.9 C+0.25 C
200914.2 C+0.48 C
201013.8 C+0.13 C
201113.7 C+0.03 C
201214.1 C+0.42 C
201314.5 C+0.81 C
201415.8 C+2.13 C
201516.1 C+2.43 C
201615.8 C+2.13 C
201715.1 C+1.41 C
201814.6 C+0.89 C
201914.8 C+1.07 C
202014.6 C+0.90 C
202114.1 C+0.45 C
202214.2 C+0.47 C
202313.9 C+0.20 C
202414.4 C+0.70 C
202514.4 C+0.74 C

The annual mean temperature here has risen by 0.1 C (0.1 to 0.2) per decade over 1908 to 2025. In Fahrenheit: 0.3 F (0.2 to 0.3) per decade. The slope is a straight line fitted to 96 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Watsonville Wtr Wks
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.1 C (0.1 to 0.2) per decade0.3 F (0.2 to 0.3) per decade1908 to 202596Rise
Mean daily maximum0.01 C (-0.04 to 0.07) per decade0.03 F (-0.08 to 0.13) per decade1908 to 202596Not clearly different from zero
Mean daily minimum0.3 C (0.2 to 0.3) per decade0.5 F (0.4 to 0.6) per decade1908 to 202596Rise

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

1908 to 2026
Yearly extremes at Watsonville Wtr Wks: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)43.3 C (109.9 F)201735.6 C (96.1 F)115
Coldest night (TNn)-11.1 C (12.0 F)1990-2.2 C (28.0 F)115
Wettest day (Rx1day)150.6 mm (5.9 in)200051.6 mm (2.0 in)115
Wettest five days (Rx5day)197.2 mm (7.8 in)1921102.9 mm (4.1 in)115
Longest dry spell (CDD)178 days2024108 days115

Hottest day (TXx)

Hottest day (TXx) at Watsonville Wtr Wks by year The hottest day of the year at Watsonville Wtr Wks, 1908 to 2026. The record is 43.3 C (109.9 F) in 2017, marked on the chart; the median year is 35.6 C (96.1 F). 2530354045192019401960198020002020Record: 43.3 C (109.9 F) in 2017
The hottest day of the year at Watsonville Wtr Wks, 1908 to 2026. The record is 43.3 C (109.9 F) in 2017, marked on the chart; the median year is 35.6 C (96.1 F).
Hottest day (TXx) at Watsonville Wtr Wks by year
YearHottest day (TXx)
190826.1 C (79.0 F)
190926.7 C (80.1 F)
191033.9 C (93.0 F)
191135.6 C (96.1 F)
191233.3 C (91.9 F)
191340.6 C (105.1 F)
191435.6 C (96.1 F)
191533.9 C (93.0 F)
191635.6 C (96.1 F)
191740.0 C (104.0 F)
191837.2 C (99.0 F)
191932.2 C (90.0 F)
192036.7 C (98.1 F)
192136.1 C (97.0 F)
192234.4 C (93.9 F)
192335.6 C (96.1 F)
192433.9 C (93.0 F)
192527.8 C (82.0 F)
192733.3 C (91.9 F)
192835.6 C (96.1 F)
192934.4 C (93.9 F)
193033.3 C (91.9 F)
193133.3 C (91.9 F)
193232.2 C (90.0 F)
193333.3 C (91.9 F)
193435.0 C (95.0 F)
193533.3 C (91.9 F)
193635.6 C (96.1 F)
193727.8 C (82.0 F)
194131.7 C (89.1 F)
194237.2 C (99.0 F)
194336.1 C (97.0 F)
194437.8 C (100.0 F)
194534.4 C (93.9 F)
194636.1 C (97.0 F)
194733.9 C (93.0 F)
194834.4 C (93.9 F)
194938.9 C (102.0 F)
195035.0 C (95.0 F)
195136.1 C (97.0 F)
195233.3 C (91.9 F)
195335.6 C (96.1 F)
195435.0 C (95.0 F)
195536.7 C (98.1 F)
195635.6 C (96.1 F)
195732.2 C (90.0 F)
195837.2 C (99.0 F)
195934.4 C (93.9 F)
196035.0 C (95.0 F)
196138.9 C (102.0 F)
196237.8 C (100.0 F)
196332.2 C (90.0 F)
196436.1 C (97.0 F)
196535.6 C (96.1 F)
196635.6 C (96.1 F)
196735.0 C (95.0 F)
196833.9 C (93.0 F)
196930.0 C (86.0 F)
197037.2 C (99.0 F)
197140.6 C (105.1 F)
197233.3 C (91.9 F)
197339.4 C (102.9 F)
197436.1 C (97.0 F)
197530.6 C (87.1 F)
197638.3 C (100.9 F)
197734.4 C (93.9 F)
197837.8 C (100.0 F)
197937.8 C (100.0 F)
198041.1 C (106.0 F)
198135.6 C (96.1 F)
198235.6 C (96.1 F)
198340.0 C (104.0 F)
198436.7 C (98.1 F)
198537.8 C (100.0 F)
198631.1 C (88.0 F)
198741.1 C (106.0 F)
198834.4 C (93.9 F)
198935.6 C (96.1 F)
199031.7 C (89.1 F)
199133.9 C (93.0 F)
199233.9 C (93.0 F)
199336.7 C (98.1 F)
199434.4 C (93.9 F)
199535.0 C (95.0 F)
199638.3 C (100.9 F)
199737.2 C (99.0 F)
199832.8 C (91.0 F)
199930.0 C (86.0 F)
200038.3 C (100.9 F)
200137.8 C (100.0 F)
200233.3 C (91.9 F)
200337.2 C (99.0 F)
200436.7 C (98.1 F)
200532.2 C (90.0 F)
200634.4 C (93.9 F)
200734.4 C (93.9 F)
200840.0 C (104.0 F)
200939.4 C (102.9 F)
201039.4 C (102.9 F)
201135.0 C (95.0 F)
201238.9 C (102.0 F)
201332.8 C (91.0 F)
201438.3 C (100.9 F)
201538.3 C (100.9 F)
201641.7 C (107.1 F)
201743.3 C (109.9 F)
201831.7 C (89.1 F)
201938.9 C (102.0 F)
202041.7 C (107.1 F)
202136.7 C (98.1 F)
202237.8 C (100.0 F)
202337.2 C (99.0 F)
202438.3 C (100.9 F)
202532.2 C (90.0 F)
202635.6 C (96.1 F)

Coldest night (TNn)

Coldest night (TNn) at Watsonville Wtr Wks by year The coldest night of the year at Watsonville Wtr Wks, 1908 to 2026. The record is -11.1 C (12.0 F) in 1990, marked on the chart; the median year is -2.2 C (28.0 F). -15-10-505192019401960198020002020Record: -11.1 C (12.0 F) in 1990
The coldest night of the year at Watsonville Wtr Wks, 1908 to 2026. The record is -11.1 C (12.0 F) in 1990, marked on the chart; the median year is -2.2 C (28.0 F).
Coldest night (TNn) at Watsonville Wtr Wks by year
YearColdest night (TNn)
1908-6.7 C (19.9 F)
1909-5.0 C (23.0 F)
1910-3.3 C (26.1 F)
1911-9.4 C (15.1 F)
1912-7.2 C (19.0 F)
1913-6.7 C (19.9 F)
1914-3.3 C (26.1 F)
1915-5.6 C (21.9 F)
1916-1.7 C (28.9 F)
1917-3.3 C (26.1 F)
1918-3.3 C (26.1 F)
1919-5.6 C (21.9 F)
1920-3.3 C (26.1 F)
1921-3.3 C (26.1 F)
1922-5.6 C (21.9 F)
1923-5.6 C (21.9 F)
1924-3.3 C (26.1 F)
1925-2.2 C (28.0 F)
1927-1.7 C (28.9 F)
1928-3.9 C (25.0 F)
1929-5.6 C (21.9 F)
1930-3.9 C (25.0 F)
1931-2.8 C (27.0 F)
1932-4.4 C (24.1 F)
1933-2.8 C (27.0 F)
19340.0 C (32.0 F)
1935-2.8 C (27.0 F)
1936-2.2 C (28.0 F)
1937-6.1 C (21.0 F)
19411.7 C (35.1 F)
1942-1.1 C (30.0 F)
1943-3.9 C (25.0 F)
1944-0.6 C (30.9 F)
1945-2.2 C (28.0 F)
1946-2.2 C (28.0 F)
1947-2.2 C (28.0 F)
1948-3.3 C (26.1 F)
1949-6.7 C (19.9 F)
1950-3.3 C (26.1 F)
1951-2.8 C (27.0 F)
1952-2.8 C (27.0 F)
1953-2.2 C (28.0 F)
1954-1.7 C (28.9 F)
1955-2.2 C (28.0 F)
1956-2.8 C (27.0 F)
1957-2.2 C (28.0 F)
1958-2.2 C (28.0 F)
1959-2.2 C (28.0 F)
1960-5.0 C (23.0 F)
1961-3.3 C (26.1 F)
1962-3.9 C (25.0 F)
1963-3.3 C (26.1 F)
1964-1.7 C (28.9 F)
1965-3.3 C (26.1 F)
1966-2.2 C (28.0 F)
1967-3.3 C (26.1 F)
1968-3.3 C (26.1 F)
1969-1.7 C (28.9 F)
1970-2.2 C (28.0 F)
1971-2.2 C (28.0 F)
1972-2.8 C (27.0 F)
1973-1.7 C (28.9 F)
1974-3.3 C (26.1 F)
1975-2.8 C (27.0 F)
1976-2.8 C (27.0 F)
1977-0.6 C (30.9 F)
1978-3.3 C (26.1 F)
1979-2.8 C (27.0 F)
1980-0.6 C (30.9 F)
19811.1 C (34.0 F)
1982-2.2 C (28.0 F)
1983-0.6 C (30.9 F)
1984-1.1 C (30.0 F)
1985-1.7 C (28.9 F)
19860.0 C (32.0 F)
1987-2.8 C (27.0 F)
1988-3.3 C (26.1 F)
1989-4.4 C (24.1 F)
1990-11.1 C (12.0 F)
1991-3.9 C (25.0 F)
1992-1.7 C (28.9 F)
1993-2.2 C (28.0 F)
1994-1.1 C (30.0 F)
19951.1 C (34.0 F)
19960.0 C (32.0 F)
1997-1.7 C (28.9 F)
1998-4.4 C (24.1 F)
1999-0.6 C (30.9 F)
20000.0 C (32.0 F)
2001-1.7 C (28.9 F)
2002-2.2 C (28.0 F)
20030.0 C (32.0 F)
2004-1.1 C (30.0 F)
20050.6 C (33.1 F)
2006-1.1 C (30.0 F)
2007-4.4 C (24.1 F)
2008-1.7 C (28.9 F)
2009-1.7 C (28.9 F)
2010-1.1 C (30.0 F)
2011-1.7 C (28.9 F)
2012-2.2 C (28.0 F)
2013-2.8 C (27.0 F)
20141.1 C (34.0 F)
2015-0.6 C (30.9 F)
2016-1.1 C (30.0 F)
2017-0.6 C (30.9 F)
2018-1.1 C (30.0 F)
2019-1.1 C (30.0 F)
20200.0 C (32.0 F)
2021-1.1 C (30.0 F)
2022-1.7 C (28.9 F)
2023-0.6 C (30.9 F)
20240.6 C (33.1 F)
20250.0 C (32.0 F)
20261.1 C (34.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Watsonville Wtr Wks by year The wettest day of the year at Watsonville Wtr Wks, 1908 to 2026. The record is 150.6 mm (5.9 in) in 2000, marked on the chart; the median year is 51.6 mm (2.0 in). 050100150200192019401960198020002020Record: 150.6 mm (5.9 in) in 2000
The wettest day of the year at Watsonville Wtr Wks, 1908 to 2026. The record is 150.6 mm (5.9 in) in 2000, marked on the chart; the median year is 51.6 mm (2.0 in).
Wettest day (Rx1day) at Watsonville Wtr Wks by year
YearWettest day (Rx1day)
190833.8 mm (1.3 in)
190958.4 mm (2.3 in)
191021.1 mm (0.8 in)
191173.9 mm (2.9 in)
191231.8 mm (1.3 in)
191350.5 mm (2.0 in)
191438.9 mm (1.5 in)
191574.9 mm (2.9 in)
191666.8 mm (2.6 in)
191726.7 mm (1.1 in)
191885.3 mm (3.4 in)
191966.5 mm (2.6 in)
192040.1 mm (1.6 in)
1921103.6 mm (4.1 in)
192249.8 mm (2.0 in)
192331.8 mm (1.3 in)
192440.1 mm (1.6 in)
192534.0 mm (1.3 in)
192788.6 mm (3.5 in)
192837.3 mm (1.5 in)
192937.6 mm (1.5 in)
193042.2 mm (1.7 in)
193154.9 mm (2.2 in)
193256.4 mm (2.2 in)
193337.3 mm (1.5 in)
193447.5 mm (1.9 in)
193536.8 mm (1.4 in)
193631.0 mm (1.2 in)
193772.4 mm (2.9 in)
194173.2 mm (2.9 in)
194247.0 mm (1.9 in)
194345.7 mm (1.8 in)
194468.6 mm (2.7 in)
194577.2 mm (3.0 in)
194651.6 mm (2.0 in)
194728.2 mm (1.1 in)
194825.7 mm (1.0 in)
194929.2 mm (1.1 in)
195080.5 mm (3.2 in)
195137.6 mm (1.5 in)
195255.4 mm (2.2 in)
195340.1 mm (1.6 in)
195432.0 mm (1.3 in)
195574.9 mm (2.9 in)
195634.0 mm (1.3 in)
195746.0 mm (1.8 in)
195851.8 mm (2.0 in)
1959149.9 mm (5.9 in)
196038.9 mm (1.5 in)
196135.3 mm (1.4 in)
196255.4 mm (2.2 in)
1963104.1 mm (4.1 in)
196458.2 mm (2.3 in)
196539.9 mm (1.6 in)
196653.1 mm (2.1 in)
196784.3 mm (3.3 in)
196836.1 mm (1.4 in)
196993.7 mm (3.7 in)
197050.5 mm (2.0 in)
197133.0 mm (1.3 in)
197247.0 mm (1.9 in)
197364.8 mm (2.6 in)
197455.4 mm (2.2 in)
197541.9 mm (1.6 in)
197624.9 mm (1.0 in)
197738.4 mm (1.5 in)
197851.8 mm (2.0 in)
197976.7 mm (3.0 in)
198058.2 mm (2.3 in)
198152.1 mm (2.1 in)
198274.9 mm (2.9 in)
198391.2 mm (3.6 in)
198443.2 mm (1.7 in)
198556.1 mm (2.2 in)
198658.4 mm (2.3 in)
1987104.4 mm (4.1 in)
198850.3 mm (2.0 in)
198943.4 mm (1.7 in)
199032.3 mm (1.3 in)
199165.0 mm (2.6 in)
199256.4 mm (2.2 in)
199351.6 mm (2.0 in)
199460.7 mm (2.4 in)
199574.2 mm (2.9 in)
199678.0 mm (3.1 in)
199751.6 mm (2.0 in)
199877.5 mm (3.1 in)
199970.4 mm (2.8 in)
2000150.6 mm (5.9 in)
200136.3 mm (1.4 in)
200272.4 mm (2.9 in)
200379.2 mm (3.1 in)
200444.2 mm (1.7 in)
200552.3 mm (2.1 in)
200652.8 mm (2.1 in)
200720.8 mm (0.8 in)
200849.0 mm (1.9 in)
2009125.0 mm (4.9 in)
201046.5 mm (1.8 in)
201134.0 mm (1.3 in)
201249.8 mm (2.0 in)
201315.2 mm (0.6 in)
2014100.6 mm (4.0 in)
201550.0 mm (2.0 in)
201661.2 mm (2.4 in)
201748.0 mm (1.9 in)
201848.5 mm (1.9 in)
201975.2 mm (3.0 in)
202056.6 mm (2.2 in)
202175.7 mm (3.0 in)
202250.0 mm (2.0 in)
202338.4 mm (1.5 in)
202447.0 mm (1.9 in)
202565.0 mm (2.6 in)
202630.0 mm (1.2 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Watsonville Wtr Wks by year The wettest five days of the year at Watsonville Wtr Wks, 1908 to 2026. The record is 197.2 mm (7.8 in) in 1921, marked on the chart; the median year is 102.9 mm (4.1 in). 050100150200192019401960198020002020Record: 197.2 mm (7.8 in) in 1921
The wettest five days of the year at Watsonville Wtr Wks, 1908 to 2026. The record is 197.2 mm (7.8 in) in 1921, marked on the chart; the median year is 102.9 mm (4.1 in).
Wettest five days (Rx5day) at Watsonville Wtr Wks by year
YearWettest five days (Rx5day)
190853.9 mm (2.1 in)
1909142.4 mm (5.6 in)
1910103.3 mm (4.1 in)
1911110.0 mm (4.3 in)
191266.6 mm (2.6 in)
1913108.5 mm (4.3 in)
1914124.4 mm (4.9 in)
191585.8 mm (3.4 in)
1916129.8 mm (5.1 in)
191793.7 mm (3.7 in)
1918143.9 mm (5.7 in)
1919133.6 mm (5.3 in)
192069.6 mm (2.7 in)
1921197.2 mm (7.8 in)
1922114.0 mm (4.5 in)
192351.6 mm (2.0 in)
192457.6 mm (2.3 in)
192560.2 mm (2.4 in)
192790.6 mm (3.6 in)
192884.4 mm (3.3 in)
192977.7 mm (3.1 in)
193084.0 mm (3.3 in)
1931179.8 mm (7.1 in)
1932107.8 mm (4.2 in)
193381.0 mm (3.2 in)
193476.7 mm (3.0 in)
193557.9 mm (2.3 in)
193688.9 mm (3.5 in)
1937119.7 mm (4.7 in)
1941140.3 mm (5.5 in)
194293.0 mm (3.7 in)
194377.2 mm (3.0 in)
194488.7 mm (3.5 in)
1945133.1 mm (5.2 in)
1946106.9 mm (4.2 in)
194748.8 mm (1.9 in)
194843.0 mm (1.7 in)
194965.1 mm (2.6 in)
1950153.2 mm (6.0 in)
1951108.0 mm (4.3 in)
1952103.1 mm (4.1 in)
195379.0 mm (3.1 in)
195459.3 mm (2.3 in)
1955196.5 mm (7.7 in)
195670.4 mm (2.8 in)
195767.0 mm (2.6 in)
1958102.9 mm (4.1 in)
1959158.9 mm (6.3 in)
196072.2 mm (2.8 in)
196148.8 mm (1.9 in)
1962116.9 mm (4.6 in)
1963193.0 mm (7.6 in)
1964146.2 mm (5.8 in)
196589.2 mm (3.5 in)
1966122.9 mm (4.8 in)
1967139.7 mm (5.5 in)
196862.7 mm (2.5 in)
1969132.5 mm (5.2 in)
1970127.0 mm (5.0 in)
197171.1 mm (2.8 in)
1972111.0 mm (4.4 in)
197384.3 mm (3.3 in)
197497.1 mm (3.8 in)
197568.0 mm (2.7 in)
197651.0 mm (2.0 in)
197774.2 mm (2.9 in)
197897.8 mm (3.9 in)
1979114.3 mm (4.5 in)
1980123.4 mm (4.9 in)
1981125.2 mm (4.9 in)
1982139.4 mm (5.5 in)
1983137.5 mm (5.4 in)
198471.6 mm (2.8 in)
198582.1 mm (3.2 in)
1986133.7 mm (5.3 in)
1987115.4 mm (4.5 in)
1988115.6 mm (4.6 in)
198943.9 mm (1.7 in)
199059.0 mm (2.3 in)
1991157.8 mm (6.2 in)
1992112.8 mm (4.4 in)
199393.3 mm (3.7 in)
199493.9 mm (3.7 in)
1995135.7 mm (5.3 in)
1996127.6 mm (5.0 in)
199788.9 mm (3.5 in)
1998166.6 mm (6.6 in)
199999.6 mm (3.9 in)
2000166.9 mm (6.6 in)
200173.9 mm (2.9 in)
2002126.7 mm (5.0 in)
200389.1 mm (3.5 in)
2004120.6 mm (4.7 in)
2005113.0 mm (4.4 in)
2006101.7 mm (4.0 in)
200752.8 mm (2.1 in)
2008100.4 mm (4.0 in)
2009132.9 mm (5.2 in)
201098.5 mm (3.9 in)
201198.4 mm (3.9 in)
2012111.0 mm (4.4 in)
201315.2 mm (0.6 in)
2014153.0 mm (6.0 in)
201565.3 mm (2.6 in)
2016142.0 mm (5.6 in)
2017130.7 mm (5.1 in)
201880.2 mm (3.2 in)
2019189.3 mm (7.5 in)
202090.7 mm (3.6 in)
2021134.3 mm (5.3 in)
2022109.7 mm (4.3 in)
2023108.6 mm (4.3 in)
202491.4 mm (3.6 in)
2025104.8 mm (4.1 in)
2026105.7 mm (4.2 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Watsonville Wtr Wks by year The longest dry spell of the year at Watsonville Wtr Wks, 1908 to 2026. The record is 178 days in 2024, marked on the chart; the median year is 108 days. 050100150200192019401960198020002020Record: 178 days in 2024
The longest dry spell of the year at Watsonville Wtr Wks, 1908 to 2026. The record is 178 days in 2024, marked on the chart; the median year is 108 days.
Longest dry spell (CDD) at Watsonville Wtr Wks by year
YearLongest dry spell (CDD)
190872 days
190991 days
1910119 days
1911116 days
191270 days
191340 days
1914107 days
191530 days
1916112 days
191735 days
191827 days
191936 days
192019 days
192121 days
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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

76 years with a frost

Across 76 years with a frost, the median last spring frost at Watsonville Wtr Wks falls on 28 February and the median first autumn frost on 26 November, which leaves a median of 266 days between them.

In 1971 to 2022 the median growing season was 297 days. That is 70 days more than in 1908 to 1952.

Fitted over all years, the growing season changes by +10.9 days per decade at this station.

Frost dates and growing season at Watsonville Wtr Wks
MeasureMedian, all yearsEarliest period (1908 to 1952)Recent period (1971 to 2022)Recent against earliestFitted trend
Last spring frost28 February29 March12 February45 days earlier-5.9 days per decade
First autumn frost26 November7 November3 December26 days later+4.9 days per decade
Growing days266 days227 days297 days70 days more+10.9 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

100 years, 1908 to 2025

A day with at least 50.9 mm (2.0 in) of rain is expected about once in 2 years. A day with at least 139.4 mm (5.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Watsonville Wtr Wks: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years50.9 mm (2.0 in)
5 years71.3 mm (2.8 in)
10 years86.0 mm (3.4 in)
25 years106.1 mm (4.2 in)
50 years122.3 mm (4.8 in)
100 years139.4 mm (5.5 in)

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 100 years of values from 1908 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: 150.6 mm (5.9 in) in 2000; 149.9 mm (5.9 in) in 1959; 125.0 mm (4.9 in) in 2009.

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, Watsonville Wtr Wks had a mean temperature of 14.7 C (58.4 F) and 544.1 mm (21.4 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Richmond (United States, 122 km away), San Luis Obispo Poly (United States, 206 km away) and Alameda NAS (United States, 102 km away).

Climate twins of Watsonville Wtr Wks: 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
RichmondUnited States122 km (76 mi)14.6 C (58.3 F)573.6 mm (22.6 in)0.63
San Luis Obispo PolyUnited States206 km (128 mi)14.9 C (58.9 F)622.5 mm (24.5 in)0.63
Alameda NASUnited States102 km (63 mi)14.9 C (58.7 F)455.4 mm (17.9 in)0.63

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