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Built 2026-10-19 (19 October 2026)

Ft Pierre 17 WSW Threshold Days by Year (USC00393076)

22 fixed thresholds counted per year at Ft Pierre 17 WSW (USC00393076): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ft Pierre 17 WSW Thresholds

  • Ft Pierre 17 WSW: days with 10 mm (0.39 in) or more of precipitation in 46 years, most in 2004 with 20.
  • Ft Pierre 17 WSW: days with 25 mm (0.98 in) or more of precipitation in 44 years, most in 1997 with 10.
  • Ft Pierre 17 WSW: days with 10 cm (3.9 in) or more of snowfall in 29 years, most in 1996 with 8.
  • Ft Pierre 17 WSW: nights with a minimum temperature at or below 0 C (32 F) in 24 years, most in 2017 with 188.
  • 22 fixed thresholds have at least one qualifying day at Ft Pierre 17 WSW.
23 years with a qualifying day
Days at or above 30 C (86 F) per year at Ft Pierre 17 WSW Days per year at Ft Pierre 17 WSW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 95 in 2006. 02550751001990: 811991: 831992: 491993: 421994: 781995: 661996: 701997: 611998: 741999: 642000: 862002: 882003: 882004: 612005: 862006: 952007: 822008: 652009: 632010: 732011: 682017: 752018: 7219901993199619992003200620092017
Days per year at Ft Pierre 17 WSW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 95 in 2006.
Days at or above 30 C (86 F) per year at Ft Pierre 17 WSW
YearDaysDecade average
19908166.8
19918366.8
19924966.8
19934266.8
19947866.8
19956666.8
19967066.8
19976166.8
19987466.8
19996466.8
20008679.3
20028879.3
20038879.3
20046179.3
20058679.3
20069579.3
20078279.3
20086579.3
20096379.3
20107372
20116872
20177572
20187272
First to last qualifying date each year at Ft Pierre 17 WSW For each year, a bar from the first to the last day at Ft Pierre 17 WSW meeting 30 C (86 F). 1990: 21 April 1990 to 31 October 19901991: 5 April 1991 to 16 October 19911992: 28 April 1992 to 21 October 19921993: 26 March 1993 to 6 October 19931994: 17 April 1994 to 10 October 19941995: 6 June 1995 to 12 October 19951996: 10 April 1996 to 5 October 19961997: 31 March 1997 to 11 October 19971998: 17 May 1998 to 28 September 19981999: 28 May 1999 to 8 November 19992000: 4 May 2000 to 21 October 20002002: 14 May 2002 to 17 September 20022003: 12 April 2003 to 22 October 20032004: 14 April 2004 to 20 September 20042005: 20 May 2005 to 18 October 20052006: 13 April 2006 to 7 October 20062007: 13 May 2007 to 3 October 20072008: 15 April 2008 to 25 September 20082009: 22 April 2009 to 20 September 20092010: 22 May 2010 to 8 October 20102011: 8 May 2011 to 5 October 20112017: 7 April 2017 to 19 October 20172018: 5 May 2018 to 16 September 201819901993199619992003200620092017JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Ft Pierre 17 WSW meeting 30 C (86 F).
First to last qualifying date each year at Ft Pierre 17 WSW
YearFirst dateLast date
19901990-04-211990-10-31
19911991-04-051991-10-16
19921992-04-281992-10-21
19931993-03-261993-10-06
19941994-04-171994-10-10
19951995-06-061995-10-12
19961996-04-101996-10-05
19971997-03-311997-10-11
19981998-05-171998-09-28
19991999-05-281999-11-08
20002000-05-042000-10-21
20022002-05-142002-09-17
20032003-04-122003-10-22
20042004-04-142004-09-20
20052005-05-202005-10-18
20062006-04-132006-10-07
20072007-05-132007-10-03
20082008-04-152008-09-25
20092009-04-222009-09-20
20102010-05-222010-10-08
20112011-05-082011-10-05
20172017-04-072017-10-19
20182018-05-052018-09-16

Every Fixed Threshold

Fixed thresholds at Ft Pierre 17 WSW
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2395200672
35 C (95 F): Days2353200224
40 C (104 F): Days171320062
45 C (113 F): Days1220062
90 F (32.2 C): Days2369200253
100 F (37.8 C): Days2227200212
110 F (43.3 C): Days6520061
120 F (48.9 C): Days1120061
0 C (32 F): Ice days (max2370199658
0 C (32 F): Frost days (min241882017163
-10 C (14 F): Days with min2482199480
-20 C (-4 F): Days with min2435199615
-30 C (-22 F): Days with min19919963
-40 C (-40 F): Days with min3220182
20 C (68 F): Tropical nights (min2427200210
25 C (77 F): Days with min8420062
10 mm (0.39 in): Days with 10 mm or more rain462020049
25 mm (0.98 in): Days with 25 mm or more rain441019973
50 mm (1.97 in): Days with 50 mm or more rain11219771
100 mm (3.94 in): Days with 100 mm or more rain1119991
10 cm (3.9 in): Days with 10 cm or more snowfall29819962
25 cm (9.8 in): Days with 25 cm or more snowfall3119871

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1990.

Download the Data

  • Data for Ft Pierre 17 WSW 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).