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Built 2026-10-19 (19 October 2026)

Howell Wwtp Threshold Days by Year (USC00203947)

19 fixed thresholds counted per year at Howell Wwtp (USC00203947): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Howell Wwtp Thresholds

  • Howell Wwtp: days with 10 mm (0.39 in) or more of precipitation in 102 years, most in 2006 with 39.
  • Howell Wwtp: days with 25 mm (0.98 in) or more of precipitation in 100 years, most in 1914 with 14.
  • Howell Wwtp: days with 10 cm (3.9 in) or more of snowfall in 65 years, most in 2008 with 8.
  • Howell Wwtp: days with 50 mm (1.97 in) or more of precipitation in 45 years, most in 2008 with 4.
  • 19 fixed thresholds have at least one qualifying day at Howell Wwtp.
35 years with a qualifying day
Days at or above 30 C (86 F) per year at Howell Wwtp Days per year at Howell Wwtp with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 67 in 1925. 0204060801892: 341893: 421894: 531895: 661897: 411898: 461900: 391905: 121906: 301907: 81911: 361912: 161913: 401914: 331915: 41916: 561917: 171918: 341919: 431920: 281922: 361923: 481925: 671926: 381927: 302004: 162005: 532006: 252007: 462008: 282009: 92010: 422011: 462012: 502013: 26189218971906191319171922192720072011
Days per year at Howell Wwtp with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 67 in 1925.
Days at or above 30 C (86 F) per year at Howell Wwtp
YearDaysDecade average
18923447
18934247
18945347
18956647
18974147
18984647
19003922.3
19051222.3
19063022.3
1907822.3
19113631
19121631
19134031
19143331
1915431
19165631
19171731
19183431
19194331
19202841.2
19223641.2
19234841.2
19256741.2
19263841.2
19273041.2
20041629.5
20055329.5
20062529.5
20074629.5
20082829.5
2009929.5
20104241
20114641
20125041
20132641
First to last qualifying date each year at Howell Wwtp For each year, a bar from the first to the last day at Howell Wwtp meeting 30 C (86 F). 1892: 12 June 1892 to 24 September 18921893: 16 June 1893 to 19 September 18931894: 17 May 1894 to 21 October 18941895: 3 May 1895 to 22 September 18951897: 14 June 1897 to 3 October 18971898: 3 June 1898 to 6 September 18981900: 24 June 1900 to 5 October 19001905: 17 June 1905 to 29 September 19051906: 28 June 1906 to 19 September 19061907: 17 June 1907 to 11 August 19071911: 17 May 1911 to 11 September 19111912: 28 June 1912 to 10 September 19121913: 13 June 1913 to 7 September 19131914: 25 May 1914 to 21 September 19141915: 25 April 1915 to 1 August 19151916: 25 May 1916 to 8 October 19161917: 9 July 1917 to 20 August 19171918: 26 May 1918 to 26 August 19181919: 30 May 1919 to 9 September 19191920: 9 June 1920 to 15 October 19201922: 7 June 1922 to 4 October 19221923: 28 May 1923 to 28 September 19231925: 23 April 1925 to 24 September 19251926: 8 May 1926 to 19 September 19261927: 9 May 1927 to 17 September 19272004: 19 April 2004 to 24 September 20042005: 5 June 2005 to 5 October 20052006: 28 May 2006 to 8 August 20062007: 12 May 2007 to 9 October 20072008: 27 May 2008 to 4 September 20082009: 24 June 2009 to 17 August 20092010: 25 May 2010 to 24 September 20102011: 23 May 2011 to 13 September 20112012: 22 March 2012 to 4 September 20122013: 21 May 2013 to 12 September 20131892189819111916192220042009JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Howell Wwtp meeting 30 C (86 F).
First to last qualifying date each year at Howell Wwtp
YearFirst dateLast date
18921892-06-121892-09-24
18931893-06-161893-09-19
18941894-05-171894-10-21
18951895-05-031895-09-22
18971897-06-141897-10-03
18981898-06-031898-09-06
19001900-06-241900-10-05
19051905-06-171905-09-29
19061906-06-281906-09-19
19071907-06-171907-08-11
19111911-05-171911-09-11
19121912-06-281912-09-10
19131913-06-131913-09-07
19141914-05-251914-09-21
19151915-04-251915-08-01
19161916-05-251916-10-08
19171917-07-091917-08-20
19181918-05-261918-08-26
19191919-05-301919-09-09
19201920-06-091920-10-15
19221922-06-071922-10-04
19231923-05-281923-09-28
19251925-04-231925-09-24
19261926-05-081926-09-19
19271927-05-091927-09-17
20042004-04-192004-09-24
20052005-06-052005-10-05
20062006-05-282006-08-08
20072007-05-122007-10-09
20082008-05-272008-09-04
20092009-06-242009-08-17
20102010-05-252010-09-24
20112011-05-232011-09-13
20122012-03-222012-09-04
20132013-05-212013-09-12

Every Fixed Threshold

Fixed thresholds at Howell Wwtp
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3567192526
35 C (95 F): Days231218949
40 C (104 F): Days1119181
90 F (32.2 C): Days3341192510
100 F (37.8 C): Days6320123
0 C (32 F): Ice days (max3577192658
0 C (32 F): Frost days (min331761926161
-10 C (14 F): Days with min3374189543
-20 C (-4 F): Days with min281719124
-30 C (-22 F): Days with min4118921
20 C (68 F): Tropical nights (min3323191611
25 C (77 F): Days with min7618981
10 mm (0.39 in): Days with 10 mm or more rain10239200629
25 mm (0.98 in): Days with 25 mm or more rain10014191411
50 mm (1.97 in): Days with 50 mm or more rain45420081
100 mm (3.94 in): Days with 100 mm or more rain1119751
10 cm (3.9 in): Days with 10 cm or more snowfall65820084
25 cm (9.8 in): Days with 25 cm or more snowfall9119001
50 cm (19.7 in): Days with 50 cm or more snowfall1119671

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1892.

Download the Data

  • Data for Howell 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 (2025-12-31).