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Built 2026-10-19 (19 October 2026)

McHenry Stratton Lock/Dam Threshold Days by Year (USC00115493)

17 fixed thresholds counted per year at McHenry Stratton Lock/Dam (USC00115493): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for McHenry Stratton Lock/Dam Thresholds

  • McHenry Stratton Lock/Dam: days with 10 mm (0.39 in) or more of precipitation in 42 years, most in 2019 with 39.
  • McHenry Stratton Lock/Dam: days with 25 mm (0.98 in) or more of precipitation in 42 years, most in 2009 with 13.
  • McHenry Stratton Lock/Dam: days with 10 cm (3.9 in) or more of snowfall in 36 years, most in 1978 with 6.
  • McHenry Stratton Lock/Dam: days with a maximum temperature at or above 30 C (86 F) in 32 years, most in 2021 with 62.
  • 17 fixed thresholds have at least one qualifying day at McHenry Stratton Lock/Dam.
32 years with a qualifying day
Days at or above 30 C (86 F) per year at McHenry Stratton Lock/Dam Days per year at McHenry Stratton Lock/Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 62 in 2021. 0204060801994: 301995: 371996: 171997: 231998: 371999: 342000: 122001: 382003: 162004: 102005: 412006: 222007: 332008: 112009: 82010: 382011: 292012: 512013: 202014: 82015: 202016: 412017: 292018: 612019: 342020: 592021: 622022: 342023: 362024: 422025: 462026: 3819941998200320072011201520192023
Days per year at McHenry Stratton Lock/Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 62 in 2021.
Days at or above 30 C (86 F) per year at McHenry Stratton Lock/Dam
YearDaysDecade average
19943029.7
19953729.7
19961729.7
19972329.7
19983729.7
19993429.7
20001221.2
20013821.2
20031621.2
20041021.2
20054121.2
20062221.2
20073321.2
20081121.2
2009821.2
20103833.1
20112933.1
20125133.1
20132033.1
2014833.1
20152033.1
20164133.1
20172933.1
20186133.1
20193433.1
20205945.3
20216245.3
20223445.3
20233645.3
20244245.3
20254645.3
20263845.3
First to last qualifying date each year at McHenry Stratton Lock/Dam For each year, a bar from the first to the last day at McHenry Stratton Lock/Dam meeting 30 C (86 F). 1994: 22 May 1994 to 16 September 19941995: 7 June 1995 to 6 September 19951996: 18 May 1996 to 23 August 19961997: 21 June 1997 to 6 October 19971998: 16 May 1998 to 27 September 19981999: 29 May 1999 to 6 September 19992000: 9 June 2000 to 19 September 20002001: 16 May 2001 to 8 September 20012003: 16 April 2003 to 8 September 20032004: 10 May 2004 to 4 August 20042005: 8 June 2005 to 14 September 20052006: 29 May 2006 to 24 August 20062007: 15 May 2007 to 9 October 20072008: 6 June 2008 to 3 September 20082009: 23 June 2009 to 16 August 20092010: 24 May 2010 to 10 October 20102011: 12 May 2011 to 3 September 20112012: 20 May 2012 to 13 September 20122013: 15 May 2013 to 11 September 20132014: 9 May 2014 to 23 July 20142015: 10 June 2015 to 9 September 20152016: 24 May 2016 to 20 September 20162017: 17 May 2017 to 27 September 20172018: 2 May 2018 to 4 October 20182019: 27 June 2019 to 2 October 20192020: 25 May 2020 to 4 September 20202021: 28 April 2021 to 2 October 20212022: 11 May 2022 to 4 September 20222023: 8 May 2023 to 4 October 20232024: 19 May 2024 to 22 September 20242025: 16 May 2025 to 5 October 20252026: 17 May 2026 to 13 October 202619941998200320072011201520192023JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at McHenry Stratton Lock/Dam meeting 30 C (86 F).
First to last qualifying date each year at McHenry Stratton Lock/Dam
YearFirst dateLast date
19941994-05-221994-09-16
19951995-06-071995-09-06
19961996-05-181996-08-23
19971997-06-211997-10-06
19981998-05-161998-09-27
19991999-05-291999-09-06
20002000-06-092000-09-19
20012001-05-162001-09-08
20032003-04-162003-09-08
20042004-05-102004-08-04
20052005-06-082005-09-14
20062006-05-292006-08-24
20072007-05-152007-10-09
20082008-06-062008-09-03
20092009-06-232009-08-16
20102010-05-242010-10-10
20112011-05-122011-09-03
20122012-05-202012-09-13
20132013-05-152013-09-11
20142014-05-092014-07-23
20152015-06-102015-09-09
20162016-05-242016-09-20
20172017-05-172017-09-27
20182018-05-022018-10-04
20192019-06-272019-10-02
20202020-05-252020-09-04
20212021-04-282021-10-02
20222022-05-112022-09-04
20232023-05-082023-10-04
20242024-05-192024-09-22
20252025-05-162025-10-05
20262026-05-172026-10-13

Every Fixed Threshold

Fixed thresholds at McHenry Stratton Lock/Dam
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3262202138
35 C (95 F): Days191020123
90 F (32.2 C): Days3131202117
100 F (37.8 C): Days3219951
0 C (32 F): Ice days (max3282201431
0 C (32 F): Frost days (min32165199680
-10 C (14 F): Days with min3276201430
-20 C (-4 F): Days with min312620145
-30 C (-22 F): Days with min5519943
20 C (68 F): Tropical nights (min3229199526
25 C (77 F): Days with min12320254
10 mm (0.39 in): Days with 10 mm or more rain4239201929
25 mm (0.98 in): Days with 25 mm or more rain4213200914
50 mm (1.97 in): Days with 50 mm or more rain31520171
100 mm (3.94 in): Days with 100 mm or more rain7119851
10 cm (3.9 in): Days with 10 cm or more snowfall36619783
25 cm (9.8 in): Days with 25 cm or more snowfall4119791

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1994.

Download the Data

  • Data for McHenry Stratton Lock/Dam 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).