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Built 2026-10-19 (19 October 2026)

Boonville 1S Threshold Days by Year (USC00120852)

17 fixed thresholds counted per year at Boonville 1S (USC00120852): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Boonville 1S Thresholds

  • Boonville 1S: days with 10 mm (0.39 in) or more of precipitation in 61 years, most in 2019 with 55.
  • Boonville 1S: days with 25 mm (0.98 in) or more of precipitation in 61 years, most in 2011 with 29.
  • Boonville 1S: days with 50 mm (1.97 in) or more of precipitation in 56 years, most in 2006 with 8.
  • Boonville 1S: days with a maximum temperature at or above 30 C (86 F) in 37 years, most in 2018 with 114.
  • 17 fixed thresholds have at least one qualifying day at Boonville 1S.
37 years with a qualifying day
Days at or above 30 C (86 F) per year at Boonville 1S Days per year at Boonville 1S with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 114 in 2018. 0501001501898: 1041991: 961992: 421993: 771994: 711995: 821996: 661997: 601998: 951999: 852000: 612001: 702002: 972003: 522004: 592005: 972006: 672007: 1072008: 692009: 652010: 1122011: 1042012: 1012013: 692014: 682015: 782016: 972017: 792018: 1142019: 992020: 762021: 862022: 882023: 732024: 902025: 802026: 991898199419982002200620102014201820222026
Days per year at Boonville 1S with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 114 in 2018.
Days at or above 30 C (86 F) per year at Boonville 1S
YearDaysDecade average
1898104104
19919674.9
19924274.9
19937774.9
19947174.9
19958274.9
19966674.9
19976074.9
19989574.9
19998574.9
20006174.4
20017074.4
20029774.4
20035274.4
20045974.4
20059774.4
20066774.4
200710774.4
20086974.4
20096574.4
201011292.1
201110492.1
201210192.1
20136992.1
20146892.1
20157892.1
20169792.1
20177992.1
201811492.1
20199992.1
20207684.6
20218684.6
20228884.6
20237384.6
20249084.6
20258084.6
20269984.6
First to last qualifying date each year at Boonville 1S For each year, a bar from the first to the last day at Boonville 1S meeting 30 C (86 F). 1898: 1 May 1898 to 9 October 18981991: 15 May 1991 to 4 October 19911992: 16 May 1992 to 14 October 19921993: 8 May 1993 to 14 September 19931994: 27 April 1994 to 1 October 19941995: 14 May 1995 to 14 September 19951996: 9 May 1996 to 11 September 19961997: 18 May 1997 to 12 October 19971998: 13 May 1998 to 6 October 19981999: 17 May 1999 to 28 September 19992000: 11 May 2000 to 3 October 20002001: 30 April 2001 to 23 September 20012002: 18 April 2002 to 3 October 20022003: 18 June 2003 to 1 September 20032004: 6 May 2004 to 15 September 20042005: 10 May 2005 to 19 October 20052006: 13 April 2006 to 4 October 20062007: 30 April 2007 to 25 September 20072008: 31 May 2008 to 24 September 20082009: 24 April 2009 to 29 August 20092010: 13 April 2010 to 11 October 20102011: 9 April 2011 to 14 September 20112012: 1 April 2012 to 13 September 20122013: 17 April 2013 to 19 September 20132014: 5 May 2014 to 2 October 20142015: 6 May 2015 to 24 September 20152016: 26 April 2016 to 18 October 20162017: 9 May 2017 to 27 September 20172018: 2 May 2018 to 9 October 20182019: 30 April 2019 to 3 October 20192020: 8 April 2020 to 10 September 20202021: 20 May 2021 to 10 October 20212022: 23 April 2022 to 22 September 20222023: 20 April 2023 to 3 October 20232024: 15 April 2024 to 6 October 20242025: 28 April 2025 to 18 October 20252026: 22 March 2026 to 12 October 202618981995200020052010201520202025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Boonville 1S meeting 30 C (86 F).
First to last qualifying date each year at Boonville 1S
YearFirst dateLast date
18981898-05-011898-10-09
19911991-05-151991-10-04
19921992-05-161992-10-14
19931993-05-081993-09-14
19941994-04-271994-10-01
19951995-05-141995-09-14
19961996-05-091996-09-11
19971997-05-181997-10-12
19981998-05-131998-10-06
19991999-05-171999-09-28
20002000-05-112000-10-03
20012001-04-302001-09-23
20022002-04-182002-10-03
20032003-06-182003-09-01
20042004-05-062004-09-15
20052005-05-102005-10-19
20062006-04-132006-10-04
20072007-04-302007-09-25
20082008-05-312008-09-24
20092009-04-242009-08-29
20102010-04-132010-10-11
20112011-04-092011-09-14
20122012-04-012012-09-13
20132013-04-172013-09-19
20142014-05-052014-10-02
20152015-05-062015-09-24
20162016-04-262016-10-18
20172017-05-092017-09-27
20182018-05-022018-10-09
20192019-04-302019-10-03
20202020-04-082020-09-10
20212021-05-202021-10-10
20222022-04-232022-09-22
20232023-04-202023-10-03
20242024-04-152024-10-06
20252025-04-282025-10-18
20262026-03-222026-10-12

Every Fixed Threshold

Fixed thresholds at Boonville 1S
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days37114201899
35 C (95 F): Days3334201123
40 C (104 F): Days1620126
90 F (32.2 C): Days3776201256
100 F (37.8 C): Days71420123
0 C (32 F): Ice days (max3726200015
0 C (32 F): Frost days (min36110201349
-10 C (14 F): Days with min3521201412
-20 C (-4 F): Days with min10419942
-30 C (-22 F): Days with min1119941
20 C (68 F): Tropical nights (min3675201172
25 C (77 F): Days with min182020113
10 mm (0.39 in): Days with 10 mm or more rain6155201923
25 mm (0.98 in): Days with 25 mm or more rain6129201111
50 mm (1.97 in): Days with 50 mm or more rain56820063
100 mm (3.94 in): Days with 100 mm or more rain15220002
10 cm (3.9 in): Days with 10 cm or more snowfall19419961

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1898.

Download the Data

  • Data for Boonville 1S 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 (2026-10-17).