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Built 2026-10-18 (18 October 2026)

Bonanza Idaho Threshold Days by Year

10 fixed thresholds counted per year at Bonanza Idaho (USR0000IBON): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Bonanza Idaho Thresholds

  • Bonanza Idaho: days with a maximum temperature at or below 0 C (32 F) in 39 years, most in 1988 with 63.
  • Bonanza Idaho: nights with a minimum temperature at or below 0 C (32 F) in 39 years, most in 1988 with 294.
  • Bonanza Idaho: nights with a minimum temperature at or below -10 C (14 F) in 39 years, most in 2008 with 124.
  • Bonanza Idaho: nights with a minimum temperature at or below -20 C (-4 F) in 39 years, most in 1993 with 44.
  • 10 fixed thresholds have at least one qualifying day at Bonanza Idaho.
38 years with a qualifying day
Days at or above 30 C (86 F) per year at Bonanza Idaho Days per year at Bonanza Idaho with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 41 in 2021. 02040601986: 161987: 31988: 181989: 41990: 111991: 21992: 71994: 151995: 21997: 71998: 281999: 152000: 252001: 222002: 192003: 372004: 162005: 182006: 192007: 332008: 152009: 212011: 162012: 202013: 252014: 132015: 202016: 182017: 322018: 232019: 182020: 192021: 412022: 352023: 132024: 252025: 202026: 241986199019952000200420082013201720212025
Days per year at Bonanza Idaho with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 41 in 2021.
Days at or above 30 C (86 F) per year at Bonanza Idaho
YearDaysDecade average
19861610.3
1987310.3
19881810.3
1989410.3
19901110.9
1991210.9
1992710.9
19941510.9
1995210.9
1997710.9
19982810.9
19991510.9
20002522.5
20012222.5
20021922.5
20033722.5
20041622.5
20051822.5
20061922.5
20073322.5
20081522.5
20092122.5
20111620.6
20122020.6
20132520.6
20141320.6
20152020.6
20161820.6
20173220.6
20182320.6
20191820.6
20201925.3
20214125.3
20223525.3
20231325.3
20242525.3
20252025.3
20262425.3
First to last qualifying date each year at Bonanza Idaho For each year, a bar from the first to the last day at Bonanza Idaho meeting 30 C (86 F). 1986: 30 May 1986 to 27 August 19861987: 27 July 1987 to 22 September 19871988: 24 June 1988 to 5 September 19881989: 19 July 1989 to 7 August 19891990: 11 July 1990 to 15 August 19901991: 8 August 1991 to 9 August 19911992: 31 July 1992 to 13 August 19921994: 20 June 1994 to 19 August 19941995: 28 July 1995 to 1 September 19951997: 15 July 1997 to 9 September 19971998: 15 July 1998 to 15 September 19981999: 6 July 1999 to 26 August 19992000: 30 June 2000 to 15 September 20002001: 21 June 2001 to 29 August 20012002: 25 June 2002 to 15 August 20022003: 28 May 2003 to 27 September 20032004: 12 July 2004 to 15 August 20042005: 8 July 2005 to 28 August 20052006: 25 June 2006 to 3 September 20062007: 20 June 2007 to 3 September 20072008: 28 June 2008 to 24 August 20082009: 16 July 2009 to 24 September 20092011: 6 July 2011 to 24 September 20112012: 7 July 2012 to 28 August 20122013: 28 June 2013 to 1 September 20132014: 2 July 2014 to 18 August 20142015: 26 June 2015 to 12 September 20152016: 5 June 2016 to 20 August 20162017: 25 June 2017 to 11 September 20172018: 5 July 2018 to 16 August 20182019: 12 July 2019 to 4 September 20192020: 21 July 2020 to 6 September 20202021: 2 June 2021 to 8 September 20212022: 9 July 2022 to 11 September 20222023: 16 July 2023 to 17 August 20232024: 8 July 2024 to 24 September 20242025: 9 June 2025 to 3 September 20252026: 11 July 2026 to 26 August 202619861991199820032008201420192024JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Bonanza Idaho meeting 30 C (86 F).
First to last qualifying date each year at Bonanza Idaho
YearFirst dateLast date
19861986-05-301986-08-27
19871987-07-271987-09-22
19881988-06-241988-09-05
19891989-07-191989-08-07
19901990-07-111990-08-15
19911991-08-081991-08-09
19921992-07-311992-08-13
19941994-06-201994-08-19
19951995-07-281995-09-01
19971997-07-151997-09-09
19981998-07-151998-09-15
19991999-07-061999-08-26
20002000-06-302000-09-15
20012001-06-212001-08-29
20022002-06-252002-08-15
20032003-05-282003-09-27
20042004-07-122004-08-15
20052005-07-082005-08-28
20062006-06-252006-09-03
20072007-06-202007-09-03
20082008-06-282008-08-24
20092009-07-162009-09-24
20112011-07-062011-09-24
20122012-07-072012-08-28
20132013-06-282013-09-01
20142014-07-022014-08-18
20152015-06-262015-09-12
20162016-06-052016-08-20
20172017-06-252017-09-11
20182018-07-052018-08-16
20192019-07-122019-09-04
20202020-07-212020-09-06
20212021-06-022021-09-08
20222022-07-092022-09-11
20232023-07-162023-08-17
20242024-07-082024-09-24
20252025-06-092025-09-03
20262026-07-112026-08-26

Every Fixed Threshold

Fixed thresholds at Bonanza Idaho
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3841202124
35 C (95 F): Days8520031
90 F (32.2 C): Days332120038
100 F (37.8 C): Days1220022
0 C (32 F): Ice days (max396319887
0 C (32 F): Frost days (min392941988176
-10 C (14 F): Days with min39124200846
-20 C (-4 F): Days with min394419935
-30 C (-22 F): Days with min27719894
-40 C (-40 F): Days with min1119901

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1986.

Download the Data

  • Data for Bonanza Idaho 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).