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Built 2026-10-19 (19 October 2026)

Newcomb Threshold Days by Year (USC00406493)

16 fixed thresholds counted per year at Newcomb (USC00406493): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Newcomb Thresholds

  • Newcomb: days with 10 mm (0.39 in) or more of precipitation in 72 years, most in 2009 with 66.
  • Newcomb: days with 25 mm (0.98 in) or more of precipitation in 72 years, most in 1967 with 23.
  • Newcomb: days with 50 mm (1.97 in) or more of precipitation in 60 years, most in 1991 with 6.
  • Newcomb: days with a maximum temperature at or above 30 C (86 F) in 27 years, most in 2007 with 97.
  • 16 fixed thresholds have at least one qualifying day at Newcomb.
27 years with a qualifying day
Days at or above 30 C (86 F) per year at Newcomb Days per year at Newcomb with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 97 in 2007. 02550751002000: 552001: 542002: 912003: 412004: 372005: 822006: 702007: 972008: 612009: 402010: 892011: 752012: 692013: 262014: 482015: 612016: 852017: 352018: 762019: 802020: 512021: 502022: 492023: 372024: 612025: 532026: 27200020032006200920122015201820212024
Days per year at Newcomb with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 97 in 2007.
Days at or above 30 C (86 F) per year at Newcomb
YearDaysDecade average
20005562.8
20015462.8
20029162.8
20034162.8
20043762.8
20058262.8
20067062.8
20079762.8
20086162.8
20094062.8
20108964.4
20117564.4
20126964.4
20132664.4
20144864.4
20156164.4
20168564.4
20173564.4
20187664.4
20198064.4
20205146.9
20215046.9
20224946.9
20233746.9
20246146.9
20255346.9
20262746.9
First to last qualifying date each year at Newcomb For each year, a bar from the first to the last day at Newcomb meeting 30 C (86 F). 2000: 7 May 2000 to 5 September 20002001: 9 April 2001 to 10 September 20012002: 17 April 2002 to 14 September 20022003: 10 May 2003 to 3 September 20032004: 8 May 2004 to 7 September 20042005: 12 May 2005 to 25 September 20052006: 15 April 2006 to 29 August 20062007: 26 March 2007 to 9 October 20072008: 5 June 2008 to 14 September 20082009: 25 April 2009 to 27 August 20092010: 3 April 2010 to 24 September 20102011: 10 April 2011 to 4 September 20112012: 2 May 2012 to 8 September 20122013: 11 April 2013 to 10 September 20132014: 6 May 2014 to 7 September 20142015: 10 April 2015 to 9 September 20152016: 19 April 2016 to 20 October 20162017: 15 April 2017 to 24 September 20172018: 4 May 2018 to 9 October 20182019: 19 May 2019 to 6 October 20192020: 28 March 2020 to 13 September 20202021: 22 May 2021 to 17 September 20212022: 12 May 2022 to 23 September 20222023: 6 April 2023 to 6 September 20232024: 16 April 2024 to 23 September 20242025: 5 April 2025 to 23 August 20252026: 1 August 2026 to 18 September 20262000200420082012201620202024JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Newcomb meeting 30 C (86 F).
First to last qualifying date each year at Newcomb
YearFirst dateLast date
20002000-05-072000-09-05
20012001-04-092001-09-10
20022002-04-172002-09-14
20032003-05-102003-09-03
20042004-05-082004-09-07
20052005-05-122005-09-25
20062006-04-152006-08-29
20072007-03-262007-10-09
20082008-06-052008-09-14
20092009-04-252009-08-27
20102010-04-032010-09-24
20112011-04-102011-09-04
20122012-05-022012-09-08
20132013-04-112013-09-10
20142014-05-062014-09-07
20152015-04-102015-09-09
20162016-04-192016-10-20
20172017-04-152017-09-24
20182018-05-042018-10-09
20192019-05-192019-10-06
20202020-03-282020-09-13
20212021-05-222021-09-17
20222022-05-122022-09-23
20232023-04-062023-09-06
20242024-04-162024-09-23
20252025-04-052025-08-23
20262026-08-012026-09-18

Every Fixed Threshold

Fixed thresholds at Newcomb
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2797200727
35 C (95 F): Days111120122
40 C (104 F): Days1220122
90 F (32.2 C): Days2654200712
100 F (37.8 C): Days1520125
0 C (32 F): Ice days (max262520105
0 C (32 F): Frost days (min27122201352
-10 C (14 F): Days with min2321201011
-20 C (-4 F): Days with min3420244
20 C (68 F): Tropical nights (min273620259
10 mm (0.39 in): Days with 10 mm or more rain726620099
25 mm (0.98 in): Days with 25 mm or more rain722319673
50 mm (1.97 in): Days with 50 mm or more rain60619914
100 mm (3.94 in): Days with 100 mm or more rain4220201
10 cm (3.9 in): Days with 10 cm or more snowfall11420224
25 cm (9.8 in): Days with 25 cm or more snowfall1119691

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2000.

Download the Data

  • Data for Newcomb 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 (2026-10-12).