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Built 2026-10-19 (19 October 2026)

Union Grove Wwtp Threshold Days by Year (USC00478723)

18 fixed thresholds counted per year at Union Grove Wwtp (USC00478723): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Union Grove Wwtp Thresholds

  • Union Grove Wwtp: days with 10 mm (0.39 in) or more of precipitation in 84 years, most in 2018 with 44.
  • Union Grove Wwtp: days with 25 mm (0.98 in) or more of precipitation in 84 years, most in 2000 with 15.
  • Union Grove Wwtp: days with 10 cm (3.9 in) or more of snowfall in 66 years, most in 1965 with 12.
  • Union Grove Wwtp: days with 50 mm (1.97 in) or more of precipitation in 58 years, most in 2004 with 5.
  • 18 fixed thresholds have at least one qualifying day at Union Grove Wwtp.
30 years with a qualifying day
Days at or above 30 C (86 F) per year at Union Grove Wwtp Days per year at Union Grove Wwtp with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 50 in 2005. 02040601997: 171998: 271999: 302000: 162001: 282002: 432003: 162004: 72005: 502006: 212007: 372008: 202009: 82010: 352011: 352012: 482013: 202014: 32015: 172016: 312017: 172018: 252019: 132020: 212021: 352022: 242023: 252024: 222025: 272026: 271997200020032006200920122015201820212024
Days per year at Union Grove Wwtp with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 50 in 2005.
Days at or above 30 C (86 F) per year at Union Grove Wwtp
YearDaysDecade average
19971724.7
19982724.7
19993024.7
20001624.6
20012824.6
20024324.6
20031624.6
2004724.6
20055024.6
20062124.6
20073724.6
20082024.6
2009824.6
20103524.4
20113524.4
20124824.4
20132024.4
2014324.4
20151724.4
20163124.4
20171724.4
20182524.4
20191324.4
20202125.9
20213525.9
20222425.9
20232525.9
20242225.9
20252725.9
20262725.9
First to last qualifying date each year at Union Grove Wwtp For each year, a bar from the first to the last day at Union Grove Wwtp meeting 30 C (86 F). 1997: 20 June 1997 to 5 October 19971998: 17 May 1998 to 26 September 19981999: 29 May 1999 to 5 September 19992000: 8 May 2000 to 18 September 20002001: 15 May 2001 to 7 September 20012002: 15 April 2002 to 10 September 20022003: 14 April 2003 to 28 August 20032004: 7 June 2004 to 3 August 20042005: 6 June 2005 to 4 October 20052006: 28 May 2006 to 23 August 20062007: 14 May 2007 to 8 October 20072008: 6 June 2008 to 3 September 20082009: 24 June 2009 to 16 August 20092010: 24 May 2010 to 24 September 20102011: 13 May 2011 to 13 September 20112012: 20 May 2012 to 13 September 20122013: 21 May 2013 to 11 September 20132014: 9 May 2014 to 23 July 20142015: 11 June 2015 to 7 September 20152016: 11 June 2016 to 20 September 20162017: 17 May 2017 to 27 September 20172018: 26 May 2018 to 18 September 20182019: 2 July 2019 to 6 August 20192020: 3 June 2020 to 29 August 20202021: 23 May 2021 to 18 September 20212022: 11 May 2022 to 2 September 20222023: 31 May 2023 to 6 September 20232024: 13 June 2024 to 22 September 20242025: 12 June 2025 to 5 October 20252026: 5 June 2026 to 13 October 202619972001200520092013201720212025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Union Grove Wwtp meeting 30 C (86 F).
First to last qualifying date each year at Union Grove Wwtp
YearFirst dateLast date
19971997-06-201997-10-05
19981998-05-171998-09-26
19991999-05-291999-09-05
20002000-05-082000-09-18
20012001-05-152001-09-07
20022002-04-152002-09-10
20032003-04-142003-08-28
20042004-06-072004-08-03
20052005-06-062005-10-04
20062006-05-282006-08-23
20072007-05-142007-10-08
20082008-06-062008-09-03
20092009-06-242009-08-16
20102010-05-242010-09-24
20112011-05-132011-09-13
20122012-05-202012-09-13
20132013-05-212013-09-11
20142014-05-092014-07-23
20152015-06-112015-09-07
20162016-06-112016-09-20
20172017-05-172017-09-27
20182018-05-262018-09-18
20192019-07-022019-08-06
20202020-06-032020-08-29
20212021-05-232021-09-18
20222022-05-112022-09-02
20232023-05-312023-09-06
20242024-06-132024-09-22
20252025-06-122025-10-05
20262026-06-052026-10-13

Every Fixed Threshold

Fixed thresholds at Union Grove Wwtp
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3050200527
35 C (95 F): Days11920122
40 C (104 F): Days1120121
90 F (32.2 C): Days2925201210
100 F (37.8 C): Days2420124
0 C (32 F): Ice days (max3085201436
0 C (32 F): Frost days (min30168201893
-10 C (14 F): Days with min3080201435
-20 C (-4 F): Days with min292720144
-30 C (-22 F): Days with min2520195
20 C (68 F): Tropical nights (min3021201216
25 C (77 F): Days with min9420122
10 mm (0.39 in): Days with 10 mm or more rain8444201827
25 mm (0.98 in): Days with 25 mm or more rain8415200011
50 mm (1.97 in): Days with 50 mm or more rain58520041
100 mm (3.94 in): Days with 100 mm or more rain5119571
10 cm (3.9 in): Days with 10 cm or more snowfall661219651
25 cm (9.8 in): Days with 25 cm or more snowfall14119601

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1997.

Download the Data

  • Data for Union Grove Wwtp 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).