Grangeville Threshold Days by Year

17 fixed thresholds counted per year at Grangeville (USC00103771): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Grangeville Thresholds

Grangeville: days with a maximum temperature at or above 30 C (86 F) in 90 years, most in 1931 with 57.
Grangeville: days with a maximum temperature at or below 0 C (32 F) in 90 years, most in 1929 with 60.
Grangeville: nights with a minimum temperature at or below 0 C (32 F) in 90 years, most in 1955 with 192.
Grangeville: days with 10 mm (0.39 in) or more of precipitation in 90 years, most in 1903 with 34.
17 fixed thresholds have at least one qualifying day at Grangeville.

Days at or above 30 C (86 F)

90 years with a qualifying day

Days per year at Grangeville with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 57 in 1931.

Days at or above 30 C (86 F) per year at Grangeville
Year	Days	Decade average
1894	22	20.3
1895	8	20.3
1896	31	20.3
1903	12	24.3
1904	29	24.3
1905	32	24.3
1928	30	33.5
1929	37	33.5
1930	37	40.9
1931	57	40.9
1933	31	40.9
1934	44	40.9
1935	37	40.9
1936	44	40.9
1937	38	40.9
1938	37	40.9
1939	43	40.9
1940	34	23.7
1941	13	23.7
1942	35	23.7
1943	20	23.7
1944	29	23.7
1945	38	23.7
1946	20	23.7
1947	15	23.7
1948	5	23.7
1949	28	23.7
1950	29	27.1
1952	30	27.1
1953	34	27.1
1954	11	27.1
1955	27	27.1
1956	24	27.1
1957	17	27.1
1958	42	27.1
1959	30	27.1
1960	37	29.5
1961	47	29.5
1962	24	29.5
1963	30	29.5
1964	16	29.5
1965	19	29.5
1966	34	29.5
1967	36	29.5
1968	22	29.5
1969	30	29.5
1970	39	31.3
1971	41	31.3
1972	29	31.3
1973	41	31.3
1974	41	31.3
1975	18	31.3
1976	12	31.3
1977	36	31.3
1978	25	31.3
1979	31	31.3
1980	6	26.7
1981	24	26.7
1982	19	26.7
1983	26	26.7
1984	34	26.7
1985	32	26.7
1986	41	26.7
1987	31	26.7
1988	37	26.7
1989	17	26.7
1990	32	28.6
1991	26	28.6
1992	33	28.6
1993	13	28.6
1994	32	28.6
1995	17	28.6
1996	37	28.6
1997	18	28.6
1998	42	28.6
1999	36	28.6
2000	38	30.6
2001	49	30.6
2002	40	30.6
2003	32	30.6
2004	16	30.6
2005	23	30.6
2006	24	30.6
2007	25	30.6
2009	28	30.6
2010	20	29
2011	22	29
2013	45	29
2025	57	53.5
2026	50	53.5

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

First to last qualifying date each year at Grangeville
Year	First date	Last date
1894	1894-07-18	1894-08-27
1895	1895-07-23	1895-08-31
1896	1896-06-26	1896-09-06
1903	1903-05-31	1903-08-19
1904	1904-06-29	1904-09-07
1905	1905-07-09	1905-09-23
1928	1928-05-21	1928-09-05
1929	1929-07-01	1929-09-17
1930	1930-07-09	1930-09-03
1931	1931-05-12	1931-09-17
1933	1933-06-12	1933-09-05
1934	1934-05-15	1934-09-06
1935	1935-06-07	1935-09-14
1936	1936-05-13	1936-09-21
1937	1937-06-02	1937-09-16
1938	1938-07-13	1938-09-23
1939	1939-04-28	1939-09-21
1940	1940-06-12	1940-09-10
1941	1941-06-22	1941-08-15
1942	1942-06-30	1942-09-05
1943	1943-07-05	1943-09-25
1944	1944-07-11	1944-09-12
1945	1945-07-07	1945-09-13
1946	1946-07-20	1946-09-11
1947	1947-07-14	1947-09-04
1948	1948-06-29	1948-09-14
1949	1949-06-06	1949-09-08
1950	1950-06-29	1950-09-03
1952	1952-07-08	1952-09-26
1953	1953-07-07	1953-09-15
1954	1954-05-18	1954-09-10
1955	1955-06-20	1955-09-07
1956	1956-07-09	1956-09-09
1957	1957-06-05	1957-09-25
1958	1958-05-22	1958-09-10
1959	1959-06-02	1959-09-12
1960	1960-06-24	1960-09-19
1961	1961-06-15	1961-08-24
1962	1962-06-23	1962-09-26
1963	1963-06-15	1963-10-02
1964	1964-06-26	1964-08-17
1965	1965-06-11	1965-08-18
1966	1966-05-05	1966-09-22
1967	1967-06-19	1967-09-28
1968	1968-06-25	1968-08-31
1969	1969-06-04	1969-09-01
1970	1970-06-03	1970-08-31
1971	1971-06-21	1971-09-10
1972	1972-05-29	1972-08-29
1973	1973-05-14	1973-09-10
1974	1974-06-12	1974-09-25
1975	1975-07-04	1975-09-06
1976	1976-06-28	1976-09-04
1977	1977-04-24	1977-08-23
1978	1978-06-05	1978-09-26
1979	1979-06-11	1979-09-18
1980	1980-07-21	1980-08-11
1981	1981-07-03	1981-09-18
1982	1982-06-19	1982-08-27
1983	1983-05-28	1983-08-31
1984	1984-05-29	1984-09-18
1985	1985-06-18	1985-08-29
1986	1986-05-26	1986-08-29
1987	1987-04-28	1987-09-23
1988	1988-05-12	1988-09-06
1989	1989-07-07	1989-09-29
1990	1990-06-29	1990-08-14
1991	1991-07-03	1991-10-11
1992	1992-06-01	1992-09-30
1993	1993-05-11	1993-09-10
1994	1994-06-22	1994-09-17
1995	1995-07-09	1995-09-04
1996	1996-06-07	1996-09-12
1997	1997-07-05	1997-09-05
1998	1998-07-09	1998-09-15
1999	1999-05-24	1999-09-23
2000	2000-06-28	2000-09-15
2001	2001-05-12	2001-10-01
2002	2002-06-25	2002-09-15
2003	2003-05-24	2003-09-03
2004	2004-07-13	2004-08-31
2005	2005-06-21	2005-08-29
2006	2006-05-15	2006-09-06
2007	2007-07-04	2007-08-30
2009	2009-06-24	2009-09-28
2010	2010-07-09	2010-09-25
2011	2011-06-28	2011-09-24
2013	2013-06-30	2013-09-15
2025	2025-05-28	2025-09-28
2026	2026-06-15	2026-09-10

Every Fixed Threshold

Fixed thresholds at Grangeville
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	90	57	1931	50
35 C (95 F): Days	70	19	1931	10
40 C (104 F): Days	5	1	1928	1
90 F (32.2 C): Days	89	38	1931	27
100 F (37.8 C): Days	27	3	1928	1
0 C (32 F): Ice days (max	90	60	1929	8
0 C (32 F): Frost days (min	90	192	1955	60
-10 C (14 F): Days with min	89	52	1985	1
-20 C (-4 F): Days with min	52	13	1949	2
-30 C (-22 F): Days with min	8	2	1937	1
20 C (68 F): Tropical nights (min	12	1	1896	1
10 mm (0.39 in): Days with 10 mm or more rain	90	34	1903	13
25 mm (0.98 in): Days with 25 mm or more rain	71	6	1955	1
50 mm (1.97 in): Days with 50 mm or more rain	3	2	1955	1
10 cm (3.9 in): Days with 10 cm or more snowfall	63	10	1977	2
25 cm (9.8 in): Days with 25 cm or more snowfall	17	3	1966	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	1961	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1894.

Download the Data

Data for Grangeville 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 2026-10-14 (14 October 2026). Threshold counts are computed by this site.

Data as of 2026-10-14. Last revised 14 October 2026 (2026-10-14).

Grangeville Threshold Days by Year

Key Facts for Grangeville Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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