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Built 2026-10-19 (19 October 2026)

Leland Bowman Lock Threshold Days by Year (USC00165296)

17 fixed thresholds counted per year at Leland Bowman Lock (USC00165296): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Leland Bowman Lock Thresholds

  • Leland Bowman Lock: days with 10 mm (0.39 in) or more of precipitation in 41 years, most in 2018 with 65.
  • Leland Bowman Lock: days with 25 mm (0.98 in) or more of precipitation in 41 years, most in 2018 with 32.
  • Leland Bowman Lock: days with 50 mm (1.97 in) or more of precipitation in 40 years, most in 2009 with 12.
  • Leland Bowman Lock: days with a maximum temperature at or above 30 C (86 F) in 38 years, most in 2018 with 147.
  • 17 fixed thresholds have at least one qualifying day at Leland Bowman Lock.
38 years with a qualifying day
Days at or above 30 C (86 F) per year at Leland Bowman Lock Days per year at Leland Bowman Lock with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 147 in 2018. 0501001501986: 1261987: 1091988: 1001989: 1001990: 1251991: 1071992: 971993: 1131994: 861995: 1221996: 1251997: 1281998: 1321999: 1322000: 1232001: 1052003: 1072004: 1102005: 1212006: 1392007: 1182008: 922009: 1262010: 1432011: 1192012: 1112013: 1222014: 1342015: 1442016: 1382017: 1282018: 1472019: 1342020: 1082021: 772023: 1462025: 1342026: 1211986199019941998200320072011201520192025
Days per year at Leland Bowman Lock with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 147 in 2018.
Days at or above 30 C (86 F) per year at Leland Bowman Lock
YearDaysDecade average
1986126108.8
1987109108.8
1988100108.8
1989100108.8
1990125116.7
1991107116.7
199297116.7
1993113116.7
199486116.7
1995122116.7
1996125116.7
1997128116.7
1998132116.7
1999132116.7
2000123115.7
2001105115.7
2003107115.7
2004110115.7
2005121115.7
2006139115.7
2007118115.7
200892115.7
2009126115.7
2010143132
2011119132
2012111132
2013122132
2014134132
2015144132
2016138132
2017128132
2018147132
2019134132
2020108117.2
202177117.2
2023146117.2
2025134117.2
2026121117.2
First to last qualifying date each year at Leland Bowman Lock For each year, a bar from the first to the last day at Leland Bowman Lock meeting 30 C (86 F). 1986: 14 May 1986 to 7 October 19861987: 18 April 1987 to 23 September 19871988: 25 April 1988 to 30 September 19881989: 22 May 1989 to 13 October 19891990: 22 May 1990 to 17 October 19901991: 14 May 1991 to 30 October 19911992: 14 May 1992 to 22 September 19921993: 1 June 1993 to 21 October 19931994: 5 May 1994 to 28 September 19941995: 6 May 1995 to 6 October 19951996: 12 May 1996 to 27 September 19961997: 17 May 1997 to 12 October 19971998: 9 May 1998 to 21 October 19981999: 12 April 1999 to 15 October 19992000: 28 April 2000 to 18 October 20002001: 10 April 2001 to 25 October 20012003: 3 May 2003 to 25 October 20032004: 31 May 2004 to 27 October 20042005: 21 May 2005 to 8 November 20052006: 19 April 2006 to 20 October 20062007: 29 April 2007 to 19 October 20072008: 21 May 2008 to 15 October 20082009: 6 April 2009 to 17 October 20092010: 26 April 2010 to 28 October 20102011: 28 April 2011 to 14 October 20112012: 12 April 2012 to 15 October 20122013: 24 May 2013 to 1 November 20132014: 26 April 2014 to 30 October 20142015: 11 April 2015 to 17 October 20152016: 18 March 2016 to 5 November 20162017: 23 March 2017 to 10 November 20172018: 7 May 2018 to 30 October 20182019: 24 May 2019 to 22 October 20192020: 10 April 2020 to 8 October 20202021: 9 June 2021 to 18 September 20212023: 10 March 2023 to 22 October 20232025: 31 March 2025 to 21 October 20252026: 14 May 2026 to 12 October 202619861991199620012007201220172023JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Leland Bowman Lock meeting 30 C (86 F).
First to last qualifying date each year at Leland Bowman Lock
YearFirst dateLast date
19861986-05-141986-10-07
19871987-04-181987-09-23
19881988-04-251988-09-30
19891989-05-221989-10-13
19901990-05-221990-10-17
19911991-05-141991-10-30
19921992-05-141992-09-22
19931993-06-011993-10-21
19941994-05-051994-09-28
19951995-05-061995-10-06
19961996-05-121996-09-27
19971997-05-171997-10-12
19981998-05-091998-10-21
19991999-04-121999-10-15
20002000-04-282000-10-18
20012001-04-102001-10-25
20032003-05-032003-10-25
20042004-05-312004-10-27
20052005-05-212005-11-08
20062006-04-192006-10-20
20072007-04-292007-10-19
20082008-05-212008-10-15
20092009-04-062009-10-17
20102010-04-262010-10-28
20112011-04-282011-10-14
20122012-04-122012-10-15
20132013-05-242013-11-01
20142014-04-262014-10-30
20152015-04-112015-10-17
20162016-03-182016-11-05
20172017-03-232017-11-10
20182018-05-072018-10-30
20192019-05-242019-10-22
20202020-04-102020-10-08
20212021-06-092021-09-18
20232023-03-102023-10-22
20252025-03-312025-10-21
20262026-05-142026-10-12

Every Fixed Threshold

Fixed thresholds at Leland Bowman Lock
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days381472018121
35 C (95 F): Days3683202314
40 C (104 F): Days2520235
90 F (32.2 C): Days38124202383
100 F (37.8 C): Days1030202330
110 F (43.3 C): Days1120111
0 C (32 F): Ice days (max6320183
0 C (32 F): Frost days (min342520145
-10 C (14 F): Days with min1119891
20 C (68 F): Tropical nights (min361672018177
25 C (77 F): Days with min3674202377
10 mm (0.39 in): Days with 10 mm or more rain4165201822
25 mm (0.98 in): Days with 25 mm or more rain4132201810
50 mm (1.97 in): Days with 50 mm or more rain401220092
100 mm (3.94 in): Days with 100 mm or more rain29419931
200 mm (7.87 in): Days with 200 mm or more rain2120181
10 cm (3.9 in): Days with 10 cm or more snowfall1120251

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1986.

Download the Data

  • Data for Leland Bowman Lock 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).