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Built 2026-10-19 (19 October 2026)

Crofton Threshold Days by Year (CA001012190)

7 fixed thresholds counted per year at Crofton (CA001012190): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Crofton Thresholds

  • Crofton: days with 10 mm (0.39 in) or more of precipitation in 34 years, most in 1933 with 44.
  • Crofton: days with 25 mm (0.98 in) or more of precipitation in 34 years, most in 1921 with 14.
  • Crofton: days with 10 cm (3.9 in) or more of snowfall in 22 years, most in 1937 with 6.
  • Crofton: days with 50 mm (1.97 in) or more of precipitation in 12 years, most in 1923 with 2.
  • 7 fixed thresholds have at least one qualifying day at Crofton.
34 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Crofton Days per year at Crofton with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 44 in 1933. 02040601921: 331922: 191923: 251924: 271925: 241926: 271927: 371928: 291929: 151930: 181931: 411932: 371933: 441934: 371935: 261936: 281937: 341938: 351939: 351940: 271941: 311942: 241943: 321944: 191945: 441946: 321947: 321948: 391949: 321950: 391951: 401952: 241953: 371954: 34192119251929193319371941194519491953
Days per year at Crofton with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 44 in 1933.
Days with 10 mm (0.39 in) or more of precipitation per year at Crofton
YearDaysDecade average
19213326.2
19221926.2
19232526.2
19242726.2
19252426.2
19262726.2
19273726.2
19282926.2
19291526.2
19301833.5
19314133.5
19323733.5
19334433.5
19343733.5
19352633.5
19362833.5
19373433.5
19383533.5
19393533.5
19402731.2
19413131.2
19422431.2
19433231.2
19441931.2
19454431.2
19463231.2
19473231.2
19483931.2
19493231.2
19503934.8
19514034.8
19522434.8
19533734.8
19543434.8
First to last qualifying date each year at Crofton For each year, a bar from the first to the last day at Crofton meeting 10 mm (0.39 in). 1921: 5 January 1921 to 12 December 19211922: 8 January 1922 to 31 December 19221923: 2 January 1923 to 25 December 19231924: 6 January 1924 to 29 December 19241925: 1 January 1925 to 22 December 19251926: 5 January 1926 to 30 December 19261927: 2 January 1927 to 11 December 19271928: 1 January 1928 to 30 December 19281929: 2 January 1929 to 25 December 19291930: 29 January 1930 to 19 November 19301931: 4 January 1931 to 27 December 19311932: 9 January 1932 to 23 December 19321933: 1 January 1933 to 28 December 19331934: 3 January 1934 to 31 December 19341935: 1 January 1935 to 26 December 19351936: 1 January 1936 to 25 December 19361937: 14 January 1937 to 30 December 19371938: 8 January 1938 to 31 December 19381939: 1 January 1939 to 28 December 19391940: 1 January 1940 to 28 December 19401941: 8 January 1941 to 22 December 19411942: 3 February 1942 to 30 December 19421943: 18 January 1943 to 23 December 19431944: 12 January 1944 to 31 December 19441945: 4 January 1945 to 28 December 19451946: 3 January 1946 to 12 December 19461947: 9 January 1947 to 31 December 19471948: 1 January 1948 to 30 December 19481949: 20 January 1949 to 28 December 19491950: 8 January 1950 to 23 December 19501951: 1 January 1951 to 30 December 19511952: 8 January 1952 to 31 December 19521953: 1 January 1953 to 31 December 19531954: 11 February 1954 to 29 December 19541921192619311936194119461951JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Crofton meeting 10 mm (0.39 in).
First to last qualifying date each year at Crofton
YearFirst dateLast date
19211921-01-051921-12-12
19221922-01-081922-12-31
19231923-01-021923-12-25
19241924-01-061924-12-29
19251925-01-011925-12-22
19261926-01-051926-12-30
19271927-01-021927-12-11
19281928-01-011928-12-30
19291929-01-021929-12-25
19301930-01-291930-11-19
19311931-01-041931-12-27
19321932-01-091932-12-23
19331933-01-011933-12-28
19341934-01-031934-12-31
19351935-01-011935-12-26
19361936-01-011936-12-25
19371937-01-141937-12-30
19381938-01-081938-12-31
19391939-01-011939-12-28
19401940-01-011940-12-28
19411941-01-081941-12-22
19421942-02-031942-12-30
19431943-01-181943-12-23
19441944-01-121944-12-31
19451945-01-041945-12-28
19461946-01-031946-12-12
19471947-01-091947-12-31
19481948-01-011948-12-30
19491949-01-201949-12-28
19501950-01-081950-12-23
19511951-01-011951-12-30
19521952-01-081952-12-31
19531953-01-011953-12-31
19541954-02-111954-12-29

Every Fixed Threshold

Fixed thresholds at Crofton
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3444193334
25 mm (0.98 in): Days with 25 mm or more rain341419216
50 mm (1.97 in): Days with 50 mm or more rain12219231
100 mm (3.94 in): Days with 100 mm or more rain1119231
10 cm (3.9 in): Days with 10 cm or more snowfall22619371
25 cm (9.8 in): Days with 25 cm or more snowfall6319502
50 cm (19.7 in): Days with 50 cm or more snowfall2119231

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1921.

Download the Data

  • Data for Crofton 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). Threshold counts are computed by this site.

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