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Built 2026-10-19 (19 October 2026)

Thornton 1SSE Threshold Days by Year (USC00419004)

5 fixed thresholds counted per year at Thornton 1SSE (USC00419004): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Thornton 1SSE Thresholds

  • Thornton 1SSE: days with 10 mm (0.39 in) or more of precipitation in 68 years, most in 1973 with 43.
  • Thornton 1SSE: days with 25 mm (0.98 in) or more of precipitation in 68 years, most in 1973 with 21.
  • Thornton 1SSE: days with 50 mm (1.97 in) or more of precipitation in 62 years, most in 1957 with 8.
  • Thornton 1SSE: days with 100 mm (3.94 in) or more of precipitation in 22 years, most in 1945 with 3.
  • 5 fixed thresholds have at least one qualifying day at Thornton 1SSE.
68 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Thornton 1SSE Days per year at Thornton 1SSE with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 43 in 1973. 02040601944: 351945: 361946: 421949: 231950: 171951: 221952: 251953: 251954: 161955: 221956: 181957: 391958: 241959: 381960: 271961: 261962: 201963: 191964: 271965: 321966: 251967: 291968: 351969: 321970: 261971: 301972: 201973: 431974: 261975: 261976: 371977: 241978: 241979: 391980: 171981: 381982: 231984: 301986: 341987: 231989: 241990: 301991: 381992: 321993: 361994: 311995: 231996: 201997: 421998: 321999: 222000: 362001: 352002: 322003: 172004: 412005: 142006: 252007: 342008: 202009: 352010: 282011: 182012: 222013: 262014: 182015: 292016: 241944195319601967197419811991199820052012
Days per year at Thornton 1SSE with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 43 in 1973.
Days with 10 mm (0.39 in) or more of precipitation per year at Thornton 1SSE
YearDaysDecade average
19443534
19453634
19464234
19492334
19501724.6
19512224.6
19522524.6
19532524.6
19541624.6
19552224.6
19561824.6
19573924.6
19582424.6
19593824.6
19602727.2
19612627.2
19622027.2
19631927.2
19642727.2
19653227.2
19662527.2
19672927.2
19683527.2
19693227.2
19702629.5
19713029.5
19722029.5
19734329.5
19742629.5
19752629.5
19763729.5
19772429.5
19782429.5
19793929.5
19801727
19813827
19822327
19843027
19863427
19872327
19892427
19903030.6
19913830.6
19923230.6
19933630.6
19943130.6
19952330.6
19962030.6
19974230.6
19983230.6
19992230.6
20003628.9
20013528.9
20023228.9
20031728.9
20044128.9
20051428.9
20062528.9
20073428.9
20082028.9
20093528.9
20102823.6
20111823.6
20122223.6
20132623.6
20141823.6
20152923.6
20162423.6
First to last qualifying date each year at Thornton 1SSE For each year, a bar from the first to the last day at Thornton 1SSE meeting 10 mm (0.39 in). 1944: 13 January 1944 to 31 December 19441945: 6 January 1945 to 3 December 19451946: 5 January 1946 to 20 December 19461949: 16 January 1949 to 30 December 19491950: 2 February 1950 to 2 November 19501951: 13 January 1951 to 27 November 19511952: 3 January 1952 to 30 December 19521953: 16 January 1953 to 20 December 19531954: 10 January 1954 to 12 December 19541955: 9 January 1955 to 1 December 19551956: 18 January 1956 to 18 December 19561957: 22 January 1957 to 24 December 19571958: 19 January 1958 to 30 December 19581959: 3 February 1959 to 31 December 19591960: 5 January 1960 to 10 December 19601961: 7 January 1961 to 17 December 19611962: 26 January 1962 to 20 November 19621963: 18 February 1963 to 19 December 19631964: 16 January 1964 to 10 December 19641965: 3 January 1965 to 23 December 19651966: 18 January 1966 to 28 December 19661967: 26 March 1967 to 30 December 19671968: 5 January 1968 to 21 December 19681969: 16 January 1969 to 29 December 19691970: 6 January 1970 to 30 December 19701971: 19 February 1971 to 15 December 19711972: 1 January 1972 to 15 December 19721973: 2 January 1973 to 24 December 19731974: 19 January 1974 to 25 December 19741975: 13 January 1975 to 25 December 19751976: 18 February 1976 to 11 December 19761977: 11 February 1977 to 30 November 19771978: 13 January 1978 to 31 December 19781979: 11 January 1979 to 29 December 19791980: 3 January 1980 to 8 December 19801981: 6 January 1981 to 30 November 19811982: 30 January 1982 to 27 December 19821984: 9 January 1984 to 31 December 19841986: 18 January 1986 to 21 December 19861987: 18 January 1987 to 18 November 19871989: 26 January 1989 to 22 November 19891990: 19 January 1990 to 27 December 19901991: 3 January 1991 to 27 December 19911992: 2 January 1992 to 15 December 19921993: 10 January 1993 to 22 December 19931994: 10 February 1994 to 29 December 19941995: 13 January 1995 to 18 December 19951996: 17 March 1996 to 16 December 19961997: 7 January 1997 to 24 December 19971998: 5 January 1998 to 19 December 19981999: 2 January 1999 to 13 December 19992000: 7 January 2000 to 27 December 20002001: 11 January 2001 to 17 December 20012002: 5 January 2002 to 31 December 20022003: 15 February 2003 to 29 December 20032004: 17 January 2004 to 7 December 20042005: 3 January 2005 to 1 November 20052006: 23 January 2006 to 30 December 20062007: 4 January 2007 to 31 December 20072008: 13 February 2008 to 10 December 20082009: 10 February 2009 to 2 December 20092010: 16 January 2010 to 13 November 20102011: 9 January 2011 to 25 December 20112012: 9 January 2012 to 23 October 20122013: 9 January 2013 to 14 December 20132014: 9 March 2014 to 12 December 20142015: 2 January 2015 to 28 November 20152016: 7 January 2016 to 6 December 201619441955196419731982199420032012JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Thornton 1SSE meeting 10 mm (0.39 in).
First to last qualifying date each year at Thornton 1SSE
YearFirst dateLast date
19441944-01-131944-12-31
19451945-01-061945-12-03
19461946-01-051946-12-20
19491949-01-161949-12-30
19501950-02-021950-11-02
19511951-01-131951-11-27
19521952-01-031952-12-30
19531953-01-161953-12-20
19541954-01-101954-12-12
19551955-01-091955-12-01
19561956-01-181956-12-18
19571957-01-221957-12-24
19581958-01-191958-12-30
19591959-02-031959-12-31
19601960-01-051960-12-10
19611961-01-071961-12-17
19621962-01-261962-11-20
19631963-02-181963-12-19
19641964-01-161964-12-10
19651965-01-031965-12-23
19661966-01-181966-12-28
19671967-03-261967-12-30
19681968-01-051968-12-21
19691969-01-161969-12-29
19701970-01-061970-12-30
19711971-02-191971-12-15
19721972-01-011972-12-15
19731973-01-021973-12-24
19741974-01-191974-12-25
19751975-01-131975-12-25
19761976-02-181976-12-11
19771977-02-111977-11-30
19781978-01-131978-12-31
19791979-01-111979-12-29
19801980-01-031980-12-08
19811981-01-061981-11-30
19821982-01-301982-12-27
19841984-01-091984-12-31
19861986-01-181986-12-21
19871987-01-181987-11-18
19891989-01-261989-11-22
19901990-01-191990-12-27
19911991-01-031991-12-27
19921992-01-021992-12-15
19931993-01-101993-12-22
19941994-02-101994-12-29
19951995-01-131995-12-18
19961996-03-171996-12-16
19971997-01-071997-12-24
19981998-01-051998-12-19
19991999-01-021999-12-13
20002000-01-072000-12-27
20012001-01-112001-12-17
20022002-01-052002-12-31
20032003-02-152003-12-29
20042004-01-172004-12-07
20052005-01-032005-11-01
20062006-01-232006-12-30
20072007-01-042007-12-31
20082008-02-132008-12-10
20092009-02-102009-12-02
20102010-01-162010-11-13
20112011-01-092011-12-25
20122012-01-092012-10-23
20132013-01-092013-12-14
20142014-03-092014-12-12
20152015-01-022015-11-28
20162016-01-072016-12-06

Every Fixed Threshold

Fixed thresholds at Thornton 1SSE
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain6843197324
25 mm (0.98 in): Days with 25 mm or more rain682119739
50 mm (1.97 in): Days with 50 mm or more rain62819573
100 mm (3.94 in): Days with 100 mm or more rain22319451
10 cm (3.9 in): Days with 10 cm or more snowfall5119491

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1944.

Download the Data

  • Data for Thornton 1SSE 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).