Bozeman Gallatin Fld AP Threshold Days by Year (USW00024132)

16 fixed thresholds counted per year at Bozeman Gallatin Fld AP (USW00024132): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Bozeman Gallatin Fld AP Thresholds

Bozeman Gallatin Fld AP: days with 10 mm (0.39 in) or more of precipitation in 85 years, most in 1948 with 14.
Bozeman Gallatin Fld AP: days with a maximum temperature at or above 30 C (86 F) in 84 years, most in 1988 with 69.
Bozeman Gallatin Fld AP: days with a maximum temperature at or below 0 C (32 F) in 84 years, most in 1985 with 90.
Bozeman Gallatin Fld AP: nights with a minimum temperature at or below 0 C (32 F) in 84 years, most in 2002 with 221.
16 fixed thresholds have at least one qualifying day at Bozeman Gallatin Fld AP.

Days at or above 30 C (86 F)

84 years with a qualifying day

Days per year at Bozeman Gallatin Fld AP with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 69 in 1988.

Days at or above 30 C (86 F) per year at Bozeman Gallatin Fld AP
Year	Days	Decade average
1942	31	28.6
1943	29	28.6
1944	23	28.6
1945	34	28.6
1946	32	28.6
1947	31	28.6
1948	26	28.6
1949	23	28.6
1950	19	30.8
1951	23	30.8
1952	19	30.8
1953	40	30.8
1954	33	30.8
1955	43	30.8
1956	30	30.8
1957	37	30.8
1958	26	30.8
1959	38	30.8
1960	44	39.3
1961	56	39.3
1962	29	39.3
1963	39	39.3
1964	36	39.3
1965	18	39.3
1966	55	39.3
1967	48	39.3
1968	29	39.3
1969	39	39.3
1970	43	34.6
1971	38	34.6
1972	31	34.6
1973	44	34.6
1974	39	34.6
1975	21	34.6
1976	26	34.6
1977	34	34.6
1978	29	34.6
1979	41	34.6
1980	23	37.7
1981	43	37.7
1982	24	37.7
1983	34	37.7
1984	46	37.7
1985	40	37.7
1986	29	37.7
1987	29	37.7
1988	69	37.7
1989	40	37.7
1990	45	34.8
1991	52	34.8
1992	33	34.8
1993	8	34.8
1994	48	34.8
1995	30	34.8
1996	37	34.8
1997	11	34.8
1998	48	34.8
1999	36	34.8
2000	47	48.5
2001	53	48.5
2002	30	48.5
2003	57	48.5
2004	23	48.5
2005	41	48.5
2006	51	48.5
2007	69	48.5
2008	54	48.5
2009	60	48.5
2010	41	45.4
2011	52	45.4
2012	56	45.4
2013	54	45.4
2015	37	45.4
2016	47	45.4
2017	55	45.4
2018	34	45.4
2019	33	45.4
2020	40	47
2021	63	47
2022	60	47
2023	30	47
2024	48	47
2025	49	47
2026	39	47

For each year, a bar from the first to the last day at Bozeman Gallatin Fld AP meeting 30 C (86 F).

First to last qualifying date each year at Bozeman Gallatin Fld AP
Year	First date	Last date
1942	1942-07-02	1942-09-08
1943	1943-07-06	1943-09-17
1944	1944-06-25	1944-09-13
1945	1945-06-21	1945-09-04
1946	1946-06-09	1946-09-14
1947	1947-07-02	1947-09-04
1948	1948-05-17	1948-09-14
1949	1949-06-10	1949-08-22
1950	1950-06-05	1950-09-05
1951	1951-07-05	1951-08-18
1952	1952-06-05	1952-09-03
1953	1953-06-11	1953-09-12
1954	1954-05-19	1954-09-11
1955	1955-06-20	1955-09-07
1956	1956-06-01	1956-09-19
1957	1957-06-03	1957-09-07
1958	1958-05-28	1958-09-11
1959	1959-06-12	1959-09-13
1960	1960-05-11	1960-09-19
1961	1961-06-16	1961-08-29
1962	1962-04-19	1962-08-26
1963	1963-06-27	1963-09-30
1964	1964-05-20	1964-08-18
1965	1965-07-10	1965-08-12
1966	1966-05-06	1966-09-23
1967	1967-06-29	1967-09-29
1968	1968-06-19	1968-09-10
1969	1969-05-26	1969-09-09
1970	1970-06-21	1970-09-03
1971	1971-06-21	1971-09-11
1972	1972-05-31	1972-09-18
1973	1973-06-06	1973-08-30
1974	1974-06-14	1974-08-18
1975	1975-07-02	1975-08-27
1976	1976-06-08	1976-09-05
1977	1977-06-01	1977-09-07
1978	1978-06-23	1978-09-07
1979	1979-06-12	1979-09-28
1980	1980-05-21	1980-09-06
1981	1981-06-26	1981-09-18
1982	1982-07-19	1982-09-09
1983	1983-06-23	1983-09-01
1984	1984-06-25	1984-09-18
1985	1985-06-07	1985-08-30
1986	1986-05-29	1986-08-28
1987	1987-05-08	1987-09-23
1988	1988-05-16	1988-09-09
1989	1989-06-15	1989-09-29
1990	1990-06-09	1990-09-15
1991	1991-06-11	1991-09-06
1992	1992-05-06	1992-10-02
1993	1993-05-13	1993-08-10
1994	1994-06-20	1994-09-25
1995	1995-06-13	1995-09-03
1996	1996-06-08	1996-09-04
1997	1997-06-04	1997-10-01
1998	1998-07-07	1998-09-17
1999	1999-07-06	1999-08-30
2000	2000-06-05	2000-09-16
2001	2001-05-12	2001-09-27
2002	2002-06-25	2002-09-16
2003	2003-05-28	2003-09-07
2004	2004-07-10	2004-09-11
2005	2005-06-20	2005-09-09
2006	2006-05-18	2006-09-13
2007	2007-05-12	2007-09-15
2008	2008-06-17	2008-09-19
2009	2009-05-17	2009-09-26
2010	2010-06-28	2010-10-03
2011	2011-06-28	2011-10-01
2012	2012-06-04	2012-09-14
2013	2013-05-12	2013-09-06
2015	2015-06-08	2015-09-26
2016	2016-06-05	2016-09-01
2017	2017-06-04	2017-09-12
2018	2018-06-09	2018-09-08
2019	2019-06-06	2019-09-16
2020	2020-06-12	2020-09-14
2021	2021-06-03	2021-09-27
2022	2022-06-16	2022-09-28
2023	2023-07-02	2023-09-02
2024	2024-06-14	2024-10-04
2025	2025-05-31	2025-09-09
2026	2026-05-13	2026-09-10

Every Fixed Threshold

Fixed thresholds at Bozeman Gallatin Fld AP
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	84	69	1988	39
35 C (95 F): Days	74	34	2007	6
40 C (104 F): Days	2	5	2007	1
90 F (32.2 C): Days	83	51	2007	24
100 F (37.8 C): Days	25	17	2007	3
0 C (32 F): Ice days (max	84	90	1985	10
0 C (32 F): Frost days (min	84	221	2002	118
-10 C (14 F): Days with min	84	115	1985	17
-20 C (-4 F): Days with min	84	44	1979	1
-30 C (-22 F): Days with min	73	18	1949	5
-40 C (-40 F): Days with min	13	4	1962	1
10 mm (0.39 in): Days with 10 mm or more rain	85	14	1948	12
25 mm (0.98 in): Days with 25 mm or more rain	35	4	1969	2
50 mm (1.97 in): Days with 50 mm or more rain	1	1	1969	1
10 cm (3.9 in): Days with 10 cm or more snowfall	42	6	1967	2
25 cm (9.8 in): Days with 25 cm or more snowfall	2	1	1949	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1942.

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Data for Bozeman Gallatin Fld AP 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).

Bozeman Gallatin Fld AP Threshold Days by Year (USW00024132)

Key Facts for Bozeman Gallatin Fld AP Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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