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Built 2026-10-18 (18 October 2026)

Knapp 2 SW Threshold Days by Year

6 fixed thresholds counted per year at Knapp 2 SW (USC00414841): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Knapp 2 SW Thresholds

  • Knapp 2 SW: days with 10 mm (0.39 in) or more of precipitation in 68 years, most in 1941 with 27.
  • Knapp 2 SW: days with 25 mm (0.98 in) or more of precipitation in 68 years, most in 1941 with 12.
  • Knapp 2 SW: days with 50 mm (1.97 in) or more of precipitation in 46 years, most in 1975 with 4.
  • Knapp 2 SW: days with 100 mm (3.94 in) or more of precipitation in 7 years, most in 1962 with 1.
  • 6 fixed thresholds have at least one qualifying day at Knapp 2 SW.
68 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Knapp 2 SW Days per year at Knapp 2 SW with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 27 in 1941. 01020301932: 201933: 91934: 71935: 171936: 181937: 91938: 131939: 141940: 101941: 271942: 171943: 111944: 201945: 101946: 111951: 101952: 91953: 101954: 101955: 121956: 121957: 201958: 151959: 201960: 101961: 121962: 131963: 151964: 131965: 151966: 191967: 131969: 211971: 181972: 251974: 201975: 231976: 141978: 131979: 91980: 111981: 151982: 191983: 121984: 131985: 191986: 241987: 201988: 101989: 111990: 241991: 261992: 211993: 131994: 131995: 221996: 141997: 211998: 101999: 142000: 132001: 162002: 232005: 122008: 142010: 212011: 92012: 101932193919461957196419741982198919962005
Days per year at Knapp 2 SW with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 27 in 1941.
Days with 10 mm (0.39 in) or more of precipitation per year at Knapp 2 SW
YearDaysDecade average
19322013.4
1933913.4
1934713.4
19351713.4
19361813.4
1937913.4
19381313.4
19391413.4
19401015.1
19412715.1
19421715.1
19431115.1
19442015.1
19451015.1
19461115.1
19511013.1
1952913.1
19531013.1
19541013.1
19551213.1
19561213.1
19572013.1
19581513.1
19592013.1
19601014.6
19611214.6
19621314.6
19631514.6
19641314.6
19651514.6
19661914.6
19671314.6
19692114.6
19711817.4
19722517.4
19742017.4
19752317.4
19761417.4
19781317.4
1979917.4
19801115.4
19811515.4
19821915.4
19831215.4
19841315.4
19851915.4
19862415.4
19872015.4
19881015.4
19891115.4
19902417.8
19912617.8
19922117.8
19931317.8
19941317.8
19952217.8
19961417.8
19972117.8
19981017.8
19991417.8
20001315.6
20011615.6
20022315.6
20051215.6
20081415.6
20102113.3
2011913.3
20121013.3
First to last qualifying date each year at Knapp 2 SW For each year, a bar from the first to the last day at Knapp 2 SW meeting 10 mm (0.39 in). 1932: 4 January 1932 to 22 December 19321933: 27 February 1933 to 30 December 19331934: 28 February 1934 to 19 November 19341935: 12 February 1935 to 26 November 19351936: 15 April 1936 to 2 December 19361937: 5 March 1937 to 14 December 19371938: 22 January 1938 to 4 November 19381939: 9 January 1939 to 22 November 19391940: 17 February 1940 to 20 November 19401941: 31 January 1941 to 25 October 19411942: 7 April 1942 to 20 December 19421943: 6 January 1943 to 27 December 19431944: 1 January 1944 to 28 December 19441945: 14 March 1945 to 9 October 19451946: 10 January 1946 to 10 December 19461951: 18 May 1951 to 28 October 19511952: 20 April 1952 to 18 December 19521953: 8 March 1953 to 23 October 19531954: 11 April 1954 to 14 November 19541955: 10 January 1955 to 1 October 19551956: 5 April 1956 to 19 December 19561957: 7 February 1957 to 10 November 19571958: 5 January 1958 to 14 November 19581959: 28 March 1959 to 17 December 19591960: 5 January 1960 to 9 December 19601961: 25 January 1961 to 2 November 19611962: 7 May 1962 to 2 December 19621963: 5 April 1963 to 19 November 19631964: 18 March 1964 to 10 December 19641965: 9 February 1965 to 8 November 19651966: 8 February 1966 to 4 October 19661967: 31 March 1967 to 15 December 19671969: 15 March 1969 to 27 November 19691971: 17 April 1971 to 26 October 19711972: 19 April 1972 to 31 October 19721974: 19 April 1974 to 28 October 19741975: 1 February 1975 to 24 December 19751976: 4 April 1976 to 7 October 19761978: 12 February 1978 to 23 October 19781979: 21 March 1979 to 23 December 19791980: 22 January 1980 to 8 December 19801981: 28 February 1981 to 30 November 19811982: 22 April 1982 to 24 November 19821983: 1 January 1983 to 25 October 19831984: 8 January 1984 to 30 December 19841985: 22 February 1985 to 18 October 19851986: 19 April 1986 to 22 December 19861987: 5 February 1987 to 25 December 19871988: 17 April 1988 to 9 December 19881989: 27 January 1989 to 13 September 19891990: 19 January 1990 to 16 December 19901991: 17 January 1991 to 21 December 19911992: 12 January 1992 to 13 December 19921993: 19 January 1993 to 19 October 19931994: 22 January 1994 to 28 December 19941995: 11 February 1995 to 3 October 19951996: 6 April 1996 to 29 November 19961997: 6 February 1997 to 21 December 19971998: 31 January 1998 to 1 November 19981999: 18 March 1999 to 8 October 19992000: 8 January 2000 to 24 November 20002001: 29 January 2001 to 17 December 20012002: 5 February 2002 to 23 December 20022005: 6 February 2005 to 10 October 20052008: 10 April 2008 to 14 October 20082010: 28 January 2010 to 8 September 20102011: 20 May 2011 to 25 December 20112012: 10 January 2012 to 22 October 201219321941195419631975198519942005JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Knapp 2 SW meeting 10 mm (0.39 in).
First to last qualifying date each year at Knapp 2 SW
YearFirst dateLast date
19321932-01-041932-12-22
19331933-02-271933-12-30
19341934-02-281934-11-19
19351935-02-121935-11-26
19361936-04-151936-12-02
19371937-03-051937-12-14
19381938-01-221938-11-04
19391939-01-091939-11-22
19401940-02-171940-11-20
19411941-01-311941-10-25
19421942-04-071942-12-20
19431943-01-061943-12-27
19441944-01-011944-12-28
19451945-03-141945-10-09
19461946-01-101946-12-10
19511951-05-181951-10-28
19521952-04-201952-12-18
19531953-03-081953-10-23
19541954-04-111954-11-14
19551955-01-101955-10-01
19561956-04-051956-12-19
19571957-02-071957-11-10
19581958-01-051958-11-14
19591959-03-281959-12-17
19601960-01-051960-12-09
19611961-01-251961-11-02
19621962-05-071962-12-02
19631963-04-051963-11-19
19641964-03-181964-12-10
19651965-02-091965-11-08
19661966-02-081966-10-04
19671967-03-311967-12-15
19691969-03-151969-11-27
19711971-04-171971-10-26
19721972-04-191972-10-31
19741974-04-191974-10-28
19751975-02-011975-12-24
19761976-04-041976-10-07
19781978-02-121978-10-23
19791979-03-211979-12-23
19801980-01-221980-12-08
19811981-02-281981-11-30
19821982-04-221982-11-24
19831983-01-011983-10-25
19841984-01-081984-12-30
19851985-02-221985-10-18
19861986-04-191986-12-22
19871987-02-051987-12-25
19881988-04-171988-12-09
19891989-01-271989-09-13
19901990-01-191990-12-16
19911991-01-171991-12-21
19921992-01-121992-12-13
19931993-01-191993-10-19
19941994-01-221994-12-28
19951995-02-111995-10-03
19961996-04-061996-11-29
19971997-02-061997-12-21
19981998-01-311998-11-01
19991999-03-181999-10-08
20002000-01-082000-11-24
20012001-01-292001-12-17
20022002-02-052002-12-23
20052005-02-062005-10-10
20082008-04-102008-10-14
20102010-01-282010-09-08
20112011-05-202011-12-25
20122012-01-102012-10-22

Every Fixed Threshold

Fixed thresholds at Knapp 2 SW
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain6827194110
25 mm (0.98 in): Days with 25 mm or more rain681219413
50 mm (1.97 in): Days with 50 mm or more rain46419751
100 mm (3.94 in): Days with 100 mm or more rain7119621
10 cm (3.9 in): Days with 10 cm or more snowfall5119391
25 cm (9.8 in): Days with 25 cm or more snowfall1119421

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1932.

Download the Data

  • Data for Knapp 2 SW 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

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