Mtn Home Threshold Days by Year (USC00106174)

19 fixed thresholds counted per year at Mtn Home (USC00106174): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mtn Home Thresholds

Mtn Home: days with a maximum temperature at or above 30 C (86 F) in 91 years, most in 2003 with 106.
Mtn Home: days with a maximum temperature at or above 35 C (95 F) in 91 years, most in 2001 with 64.
Mtn Home: days with a maximum temperature at or above 90 F (32.2 C) in 91 years, most in 2001 with 82.
Mtn Home: days with a maximum temperature at or below 0 C (32 F) in 91 years, most in 1985 with 67.
19 fixed thresholds have at least one qualifying day at Mtn Home.

Days at or above 30 C (86 F)

91 years with a qualifying day

Days per year at Mtn Home with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 106 in 2003.

Days at or above 30 C (86 F) per year at Mtn Home
Year	Days	Decade average
1906	89	74.3
1907	59	74.3
1908	74	74.3
1909	75	74.3
1910	85	71.2
1912	49	71.2
1913	68	71.2
1914	74	71.2
1915	72	71.2
1916	73	71.2
1917	78	71.2
1918	65	71.2
1919	77	71.2
1920	57	70.2
1921	66	70.2
1922	88	70.2
1923	76	70.2
1924	85	70.2
1925	72	70.2
1926	74	70.2
1927	68	70.2
1928	39	70.2
1929	77	70.2
1930	77	79.6
1931	93	79.6
1933	75	79.6
1934	92	79.6
1935	74	79.6
1936	87	79.6
1937	80	79.6
1938	69	79.6
1939	69	79.6
1940	83	72.7
1941	54	72.7
1942	69	72.7
1943	64	72.7
1944	63	72.7
1945	72	72.7
1946	75	72.7
1947	79	72.7
1948	80	72.7
1949	88	72.7
1950	73	84.5
1951	61	84.5
1953	91	84.5
1954	90	84.5
1955	79	84.5
1956	92	84.5
1957	97	84.5
1958	93	84.5
1961	87	72
1962	67	72
1963	68	72
1964	70	72
1965	49	72
1967	87	72
1968	61	72
1969	87	72
1970	85	75.4
1973	79	75.4
1974	86	75.4
1975	66	75.4
1976	60	75.4
1977	86	75.4
1979	66	75.4
1981	74	75.3
1982	62	75.3
1983	64	75.3
1984	73	75.3
1985	65	75.3
1986	81	75.3
1987	89	75.3
1988	93	75.3
1989	77	75.3
1990	81	77.7
1991	74	77.7
1992	89	77.7
1993	54	77.7
1994	100	77.7
1995	68	77.7
1996	77	77.7
1997	85	77.7
1998	73	77.7
1999	76	77.7
2000	84	89.6
2001	98	89.6
2002	87	89.6
2003	106	89.6
2004	75	89.6
2005	83	89.6
2006	94	89.6

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

First to last qualifying date each year at Mtn Home
Year	First date	Last date
1906	1906-04-21	1906-10-10
1907	1907-06-03	1907-10-05
1908	1908-04-19	1908-09-30
1909	1909-05-03	1909-09-24
1910	1910-04-19	1910-10-11
1912	1912-06-04	1912-09-30
1913	1913-05-06	1913-09-27
1914	1914-05-08	1914-09-29
1915	1915-04-28	1915-10-22
1916	1916-05-05	1916-09-21
1917	1917-05-13	1917-09-20
1918	1918-05-03	1918-09-28
1919	1919-04-24	1919-09-16
1920	1920-06-07	1920-09-18
1921	1921-06-09	1921-09-01
1922	1922-05-23	1922-10-10
1923	1923-05-08	1923-09-14
1924	1924-05-02	1924-09-16
1925	1925-06-18	1925-09-25
1926	1926-04-29	1926-09-10
1927	1927-04-25	1927-10-16
1928	1928-05-24	1928-09-22
1929	1929-05-20	1929-09-18
1930	1930-04-21	1930-09-17
1931	1931-05-06	1931-09-27
1933	1933-06-11	1933-10-07
1934	1934-04-20	1934-10-11
1935	1935-05-22	1935-10-02
1936	1936-04-16	1936-10-10
1937	1937-05-13	1937-09-19
1938	1938-05-25	1938-09-30
1939	1939-04-28	1939-09-24
1940	1940-05-09	1940-09-12
1941	1941-05-11	1941-09-17
1942	1942-04-21	1942-10-09
1943	1943-05-27	1943-10-02
1944	1944-05-12	1944-10-07
1945	1945-04-20	1945-10-03
1946	1946-04-16	1946-09-25
1947	1947-05-02	1947-09-25
1948	1948-05-17	1948-09-15
1949	1949-05-08	1949-09-27
1950	1950-06-04	1950-10-13
1951	1951-05-22	1951-09-27
1953	1953-06-10	1953-10-14
1954	1954-05-07	1954-09-27
1955	1955-05-20	1955-10-09
1956	1956-04-20	1956-09-27
1957	1957-05-27	1957-10-01
1958	1958-05-06	1958-10-18
1961	1961-05-25	1961-09-15
1962	1962-04-18	1962-09-25
1963	1963-05-22	1963-10-02
1964	1964-05-16	1964-10-07
1965	1965-06-04	1965-10-09
1967	1967-05-18	1967-09-30
1968	1968-05-29	1968-09-14
1969	1969-05-24	1969-09-28
1970	1970-05-17	1970-10-03
1973	1973-05-14	1973-09-14
1974	1974-05-26	1974-09-25
1975	1975-05-14	1975-10-02
1976	1976-05-13	1976-09-30
1977	1977-04-08	1977-09-14
1979	1979-05-21	1979-09-21
1981	1981-05-01	1981-09-18
1982	1982-06-11	1982-09-23
1983	1983-05-24	1983-09-25
1984	1984-05-13	1984-09-19
1985	1985-04-14	1985-08-30
1986	1986-05-19	1986-09-08
1987	1987-04-23	1987-10-04
1988	1988-04-13	1988-10-08
1989	1989-05-07	1989-10-11
1990	1990-04-16	1990-10-05
1991	1991-06-10	1991-10-16
1992	1992-04-27	1992-10-01
1993	1993-05-11	1993-10-04
1994	1994-04-17	1994-09-28
1995	1995-05-30	1995-09-16
1996	1996-06-02	1996-10-09
1997	1997-05-09	1997-10-01
1998	1998-06-18	1998-09-17
1999	1999-05-23	1999-09-23
2000	2000-04-27	2000-09-16
2001	2001-04-26	2001-10-01
2002	2002-05-13	2002-09-24
2003	2003-05-22	2003-10-23
2004	2004-05-02	2004-10-08
2005	2005-05-27	2005-10-01
2006	2006-05-14	2006-09-30

Every Fixed Threshold

Fixed thresholds at Mtn Home
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	91	106	2003	94
35 C (95 F): Days	91	64	2001	53
40 C (104 F): Days	60	17	2003	8
45 C (113 F): Days	2	2	2002	1
90 F (32.2 C): Days	91	82	2001	70
100 F (37.8 C): Days	85	30	1955	19
110 F (43.3 C): Days	5	4	2003	4
0 C (32 F): Ice days (max	91	67	1985	10
0 C (32 F): Frost days (min	91	197	1916	124
-10 C (14 F): Days with min	91	59	1985	18
-20 C (-4 F): Days with min	49	20	1949	3
-30 C (-22 F): Days with min	6	3	1924	1
20 C (68 F): Tropical nights (min	66	9	2001	7
25 C (77 F): Days with min	3	2	2005	2
10 mm (0.39 in): Days with 10 mm or more rain	88	14	1907	12
25 mm (0.98 in): Days with 25 mm or more rain	29	2	1923	1
50 mm (1.97 in): Days with 50 mm or more rain	1	1	1976	1
10 cm (3.9 in): Days with 10 cm or more snowfall	24	5	1916	1
25 cm (9.8 in): Days with 25 cm or more snowfall	3	1	1912	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1906.

Download the Data

Data for Mtn Home 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Mtn Home Threshold Days by Year (USC00106174)

Key Facts for Mtn Home Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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