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Built 2026-10-18 (18 October 2026)

Porcupine South Dakota Threshold Days by Year

14 fixed thresholds counted per year at Porcupine South Dakota (USR0000SPIN): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Porcupine South Dakota Thresholds

  • Porcupine South Dakota: days with a maximum temperature at or above 30 C (86 F) in 32 years, most in 2007 with 76.
  • Porcupine South Dakota: days with a maximum temperature at or above 35 C (95 F) in 32 years, most in 2007 with 27.
  • Porcupine South Dakota: days with a maximum temperature at or above 90 F (32.2 C) in 32 years, most in 2007 with 55.
  • Porcupine South Dakota: days with a maximum temperature at or below 0 C (32 F) in 32 years, most in 2019 with 65.
  • 14 fixed thresholds have at least one qualifying day at Porcupine South Dakota.
32 years with a qualifying day
Days at or above 30 C (86 F) per year at Porcupine South Dakota Days per year at Porcupine South Dakota with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 76 in 2007. 0204060801993: 151994: 481995: 471996: 491997: 461998: 481999: 432000: 742001: 722002: 682004: 482005: 682006: 642007: 762009: 312010: 532011: 512012: 762013: 382014: 252015: 462016: 412017: 492018: 442019: 262020: 652021: 682022: 682023: 382024: 582025: 522026: 7119931997200120062011201520192023
Days per year at Porcupine South Dakota with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 76 in 2007.
Days at or above 30 C (86 F) per year at Porcupine South Dakota
YearDaysDecade average
19931542.3
19944842.3
19954742.3
19964942.3
19974642.3
19984842.3
19994342.3
20007462.6
20017262.6
20026862.6
20044862.6
20056862.6
20066462.6
20077662.6
20093162.6
20105344.9
20115144.9
20127644.9
20133844.9
20142544.9
20154644.9
20164144.9
20174944.9
20184444.9
20192644.9
20206560
20216860
20226860
20233860
20245860
20255260
20267160
First to last qualifying date each year at Porcupine South Dakota For each year, a bar from the first to the last day at Porcupine South Dakota meeting 30 C (86 F). 1993: 20 June 1993 to 6 October 19931994: 17 April 1994 to 28 September 19941995: 14 June 1995 to 28 September 19951996: 10 April 1996 to 9 September 19961997: 31 May 1997 to 2 October 19971998: 17 June 1998 to 25 September 19981999: 8 June 1999 to 6 October 19992000: 4 May 2000 to 29 September 20002001: 28 April 2001 to 1 October 20012002: 30 May 2002 to 17 September 20022004: 5 May 2004 to 18 September 20042005: 19 May 2005 to 2 October 20052006: 18 May 2006 to 2 October 20062007: 11 May 2007 to 1 October 20072009: 23 April 2009 to 15 September 20092010: 28 May 2010 to 5 October 20102011: 2 June 2011 to 4 October 20112012: 1 April 2012 to 2 October 20122013: 13 May 2013 to 22 September 20132014: 27 May 2014 to 27 September 20142015: 9 June 2015 to 11 October 20152016: 5 May 2016 to 18 September 20162017: 5 June 2017 to 21 September 20172018: 25 May 2018 to 22 September 20182019: 15 May 2019 to 15 September 20192020: 31 May 2020 to 8 October 20202021: 3 June 2021 to 28 September 20212022: 7 May 2022 to 29 September 20222023: 8 June 2023 to 18 September 20232024: 12 June 2024 to 10 October 20242025: 11 May 2025 to 3 October 20252026: 21 March 2026 to 10 October 202619931997200120062011201520192023JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Porcupine South Dakota meeting 30 C (86 F).
First to last qualifying date each year at Porcupine South Dakota
YearFirst dateLast date
19931993-06-201993-10-06
19941994-04-171994-09-28
19951995-06-141995-09-28
19961996-04-101996-09-09
19971997-05-311997-10-02
19981998-06-171998-09-25
19991999-06-081999-10-06
20002000-05-042000-09-29
20012001-04-282001-10-01
20022002-05-302002-09-17
20042004-05-052004-09-18
20052005-05-192005-10-02
20062006-05-182006-10-02
20072007-05-112007-10-01
20092009-04-232009-09-15
20102010-05-282010-10-05
20112011-06-022011-10-04
20122012-04-012012-10-02
20132013-05-132013-09-22
20142014-05-272014-09-27
20152015-06-092015-10-11
20162016-05-052016-09-18
20172017-06-052017-09-21
20182018-05-252018-09-22
20192019-05-152019-09-15
20202020-05-312020-10-08
20212021-06-032021-09-28
20222022-05-072022-09-29
20232023-06-082023-09-18
20242024-06-122024-10-10
20252025-05-112025-10-03
20262026-03-212026-10-10

Every Fixed Threshold

Fixed thresholds at Porcupine South Dakota
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3276200771
35 C (95 F): Days3227200723
40 C (104 F): Days91019983
45 C (113 F): Days1219982
90 F (32.2 C): Days3255200743
100 F (37.8 C): Days261619984
110 F (43.3 C): Days1519985
0 C (32 F): Ice days (max3265201915
0 C (32 F): Frost days (min32162201371
-10 C (14 F): Days with min3264199616
-20 C (-4 F): Days with min302319965
-30 C (-22 F): Days with min3219962
20 C (68 F): Tropical nights (min3125201220
25 C (77 F): Days with min21619982

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1993.

Download the Data

  • Data for Porcupine South Dakota 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-16).