Idaho Falls 46 W Threshold Days by Year (USW00094143)

15 fixed thresholds counted per year at Idaho Falls 46 W (USW00094143): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Idaho Falls 46 W Thresholds

Idaho Falls 46 W: days with a maximum temperature at or above 30 C (86 F) in 72 years, most in 1988 with 77.
Idaho Falls 46 W: days with a maximum temperature at or above 90 F (32.2 C) in 72 years, most in 1988 with 59.
Idaho Falls 46 W: days with a maximum temperature at or below 0 C (32 F) in 72 years, most in 1985 with 128.
Idaho Falls 46 W: nights with a minimum temperature at or below 0 C (32 F) in 72 years, most in 1970 with 235.
15 fixed thresholds have at least one qualifying day at Idaho Falls 46 W.

Days at or above 30 C (86 F)

72 years with a qualifying day

Days per year at Idaho Falls 46 W with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 77 in 1988.

Days at or above 30 C (86 F) per year at Idaho Falls 46 W
Year	Days	Decade average
1955	53	53.6
1956	56	53.6
1957	49	53.6
1958	55	53.6
1959	55	53.6
1960	49	44.5
1961	54	44.5
1962	35	44.5
1963	42	44.5
1964	39	44.5
1965	21	44.5
1966	56	44.5
1967	59	44.5
1968	39	44.5
1969	51	44.5
1970	53	45.5
1971	48	45.5
1972	40	45.5
1973	42	45.5
1974	58	45.5
1975	40	45.5
1976	42	45.5
1977	56	45.5
1978	29	45.5
1979	47	45.5
1980	34	48.1
1981	63	48.1
1982	43	48.1
1983	36	48.1
1984	43	48.1
1985	46	48.1
1986	48	48.1
1987	48	48.1
1988	77	48.1
1989	43	48.1
1990	62	48.7
1991	62	48.7
1992	61	48.7
1993	11	48.7
1994	68	48.7
1995	34	48.7
1996	54	48.7
1997	35	48.7
1998	58	48.7
1999	42	48.7
2000	61	56.8
2001	70	56.8
2002	54	56.8
2003	71	56.8
2004	43	56.8
2005	52	56.8
2006	52	56.8
2007	50	56.8
2008	66	56.8
2009	49	56.8
2010	53	56.2
2011	47	56.2
2012	72	56.2
2013	68	56.2
2014	43	56.2
2015	52	56.2
2016	60	56.2
2017	66	56.2
2018	50	56.2
2019	51	56.2
2020	67	65.6
2021	70	65.6
2022	73	65.6
2023	44	65.6
2024	71	65.6
2025	74	65.6
2026	60	65.6

For each year, a bar from the first to the last day at Idaho Falls 46 W meeting 30 C (86 F).

First to last qualifying date each year at Idaho Falls 46 W
Year	First date	Last date
1955	1955-06-07	1955-09-07
1956	1956-05-31	1956-09-19
1957	1957-06-03	1957-09-30
1958	1958-05-19	1958-09-11
1959	1959-06-05	1959-09-11
1960	1960-05-11	1960-08-30
1961	1961-06-10	1961-08-27
1962	1962-06-23	1962-09-18
1963	1963-07-01	1963-09-27
1964	1964-06-25	1964-08-23
1965	1965-06-23	1965-08-11
1966	1966-05-27	1966-09-23
1967	1967-05-22	1967-09-05
1968	1968-06-02	1968-09-10
1969	1969-06-04	1969-09-08
1970	1970-06-20	1970-08-30
1971	1971-06-21	1971-09-10
1972	1972-05-31	1972-08-28
1973	1973-06-09	1973-08-30
1974	1974-06-12	1974-09-07
1975	1975-06-30	1975-09-09
1976	1976-06-06	1976-09-10
1977	1977-06-01	1977-09-11
1978	1978-07-01	1978-09-04
1979	1979-06-04	1979-09-19
1980	1980-06-20	1980-09-07
1981	1981-06-22	1981-09-18
1982	1982-06-28	1982-09-10
1983	1983-05-28	1983-09-02
1984	1984-05-29	1984-09-19
1985	1985-06-07	1985-08-29
1986	1986-05-27	1986-09-05
1987	1987-05-15	1987-09-24
1988	1988-05-16	1988-09-09
1989	1989-06-15	1989-09-16
1990	1990-06-09	1990-09-15
1991	1991-06-11	1991-09-27
1992	1992-04-29	1992-10-01
1993	1993-06-20	1993-09-10
1994	1994-06-11	1994-09-28
1995	1995-07-07	1995-09-16
1996	1996-06-07	1996-09-10
1997	1997-06-26	1997-09-09
1998	1998-06-30	1998-09-16
1999	1999-06-18	1999-09-09
2000	2000-06-05	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	2006-09-13
2007	2007-05-17	2007-09-12
2008	2008-05-17	2008-09-17
2009	2009-05-18	2009-09-26
2010	2010-06-24	2010-10-02
2011	2011-06-22	2011-09-30
2012	2012-05-15	2012-09-15
2013	2013-05-13	2013-09-06
2014	2014-06-12	2014-09-25
2015	2015-06-08	2015-09-26
2016	2016-06-04	2016-09-01
2017	2017-06-04	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	2021-06-01	2021-09-10
2022	2022-05-26	2022-09-12
2023	2023-06-30	2023-08-29
2024	2024-06-06	2024-09-28
2025	2025-05-29	2025-09-07
2026	2026-05-12	2026-08-27

Every Fixed Threshold

Fixed thresholds at Idaho Falls 46 W
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	72	77	1988	60
35 C (95 F): Days	69	30	2021	26
40 C (104 F): Days	2	1	2002	1
90 F (32.2 C): Days	72	59	1988	47
100 F (37.8 C): Days	23	10	2003	7
0 C (32 F): Ice days (max	72	128	1985	12
0 C (32 F): Frost days (min	72	235	1970	125
-10 C (14 F): Days with min	72	121	1985	25
-20 C (-4 F): Days with min	72	64	1985	3
-30 C (-22 F): Days with min	46	11	1972	1
-40 C (-40 F): Days with min	3	1	1962	1
20 C (68 F): Tropical nights (min	7	1	1976	1
10 mm (0.39 in): Days with 10 mm or more rain	66	14	1968	2
25 mm (0.98 in): Days with 25 mm or more rain	13	2	1961	1
10 cm (3.9 in): Days with 10 cm or more snowfall	48	4	1971	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1955.

Download the Data

Data for Idaho Falls 46 W 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Idaho Falls 46 W Threshold Days by Year (USW00094143)

Key Facts for Idaho Falls 46 W Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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