Crystal Idaho Threshold Days by Year

11 fixed thresholds counted per year at Crystal Idaho (USR0000ICRY): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Crystal Idaho Thresholds

Crystal Idaho: days with a maximum temperature at or above 30 C (86 F) in 36 years, most in 2001 with 71.
Crystal Idaho: days with a maximum temperature at or below 0 C (32 F) in 36 years, most in 1993 with 78.
Crystal Idaho: days with a maximum temperature at or above 90 F (32.2 C) in 35 years, most in 2022 with 52.
Crystal Idaho: nights with a minimum temperature at or below 0 C (32 F) in 35 years, most in 2011 with 197.
11 fixed thresholds have at least one qualifying day at Crystal Idaho.

Days at or above 30 C (86 F)

36 years with a qualifying day

Days per year at Crystal Idaho with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 71 in 2001.

Days at or above 30 C (86 F) per year at Crystal Idaho
Year	Days	Decade average
1986	40	40.5
1989	41	40.5
1990	55	44.7
1991	54	44.7
1992	45	44.7
1993	12	44.7
1994	67	44.7
1995	27	44.7
1996	54	44.7
1997	29	44.7
1998	57	44.7
1999	47	44.7
2000	61	57
2001	71	57
2002	46	57
2003	65	57
2004	41	57
2005	50	57
2006	60	57
2007	66	57
2008	53	57
2010	45	47.6
2011	43	47.6
2014	40	47.6
2015	43	47.6
2016	54	47.6
2017	64	47.6
2018	47	47.6
2019	45	47.6
2020	62	59.6
2021	65	59.6
2022	70	59.6
2023	42	59.6
2024	63	59.6
2025	54	59.6
2026	61	59.6

For each year, a bar from the first to the last day at Crystal Idaho meeting 30 C (86 F).

First to last qualifying date each year at Crystal Idaho
Year	First date	Last date
1986	1986-05-28	1986-09-05
1989	1989-06-14	1989-09-29
1990	1990-06-09	1990-09-14
1991	1991-06-18	1991-09-27
1992	1992-05-06	1992-10-01
1993	1993-06-26	1993-09-10
1994	1994-06-11	1994-09-28
1995	1995-07-06	1995-09-03
1996	1996-06-07	1996-09-10
1997	1997-06-26	1997-09-09
1998	1998-06-30	1998-09-17
1999	1999-06-18	1999-09-17
2000	2000-06-04	2000-09-16
2001	2001-05-12	2001-09-27
2002	2002-05-30	2002-09-15
2003	2003-05-23	2003-09-04
2004	2004-06-03	2004-09-11
2005	2005-06-20	2005-09-08
2006	2006-05-17	2006-09-12
2007	2007-06-02	2007-09-14
2008	2008-06-16	2008-09-30
2010	2010-06-28	2010-10-02
2011	2011-06-28	2011-09-30
2014	2014-06-12	2014-09-25
2015	2015-06-09	2015-09-25
2016	2016-06-05	2016-09-01
2017	2017-05-31	2017-09-12
2018	2018-06-13	2018-09-07
2019	2019-06-30	2019-09-15
2020	2020-05-29	2020-09-17
2021	2021-06-02	2021-09-10
2022	2022-05-26	2022-09-12
2023	2023-07-01	2023-08-29
2024	2024-06-06	2024-09-28
2025	2025-05-29	2025-09-07
2026	2026-05-12	2026-10-05

Every Fixed Threshold

Fixed thresholds at Crystal Idaho
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	36	71	2001	61
35 C (95 F): Days	34	27	2003	23
40 C (104 F): Days	2	1	2002	1
90 F (32.2 C): Days	35	52	2022	42
100 F (37.8 C): Days	16	8	2003	5
0 C (32 F): Ice days (max	36	78	1993	13
0 C (32 F): Frost days (min	35	197	2011	86
-10 C (14 F): Days with min	35	58	1993	11
-20 C (-4 F): Days with min	26	11	1989	2
-30 C (-22 F): Days with min	1	3	1990	3
20 C (68 F): Tropical nights (min	21	10	2003	7

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 Crystal 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

Data as of 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Crystal Idaho Threshold Days by Year

Key Facts for Crystal Idaho Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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