Yamagata Threshold Days by Year (JA000047588)

14 fixed thresholds counted per year at Yamagata (JA000047588): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Yamagata Thresholds

Yamagata: days with a maximum temperature at or above 30 C (86 F) in 69 years, most in 2025 with 74.
Yamagata: days with a maximum temperature at or above 90 F (32.2 C) in 69 years, most in 2025 with 52.
Yamagata: days with a maximum temperature at or below 0 C (32 F) in 66 years, most in 1977 with 35.
Yamagata: days with 10 mm (0.39 in) or more of precipitation in 57 years, most in 1980 with 50.
14 fixed thresholds have at least one qualifying day at Yamagata.

Days at or above 30 C (86 F)

69 years with a qualifying day

Days per year at Yamagata with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 74 in 2025.

Days at or above 30 C (86 F) per year at Yamagata
Year	Days	Decade average
1951	42	30.2
1952	24	30.2
1953	18	30.2
1954	35	30.2
1955	53	30.2
1956	26	30.2
1957	25	30.2
1958	26	30.2
1959	23	30.2
1960	34	34.7
1961	46	34.7
1962	45	34.7
1963	31	34.7
1964	32	34.7
1965	29	34.7
1966	38	34.7
1967	40	34.7
1968	26	34.7
1969	26	34.7
1970	34	37.6
1971	31	37.6
1972	39	37.6
1973	50	37.6
1974	31	37.6
1975	49	37.6
1976	20	37.6
1977	26	37.6
1978	61	37.6
1979	35	37.6
1980	18	29.8
1981	31	29.8
1982	17	29.8
1983	30	29.8
1984	43	29.8
1985	51	29.8
1986	26	29.8
1987	30	29.8
1988	19	29.8
1989	33	29.8
1990	46	35.5
1991	28	35.5
1992	35	35.5
1993	3	35.5
1994	58	35.5
1996	36	35.5
1998	36	35.5
1999	42	35.5
2000	64	38.6
2002	40	38.6
2003	23	38.6
2004	39	38.6
2006	36	38.6
2007	42	38.6
2008	40	38.6
2009	25	38.6
2010	64	44.8
2011	52	44.8
2013	37	44.8
2014	40	44.8
2015	40	44.8
2016	42	44.8
2017	35	44.8
2018	51	44.8
2019	42	44.8
2020	46	49.4
2021	48	49.4
2022	49	49.4
2025	74	49.4
2026	30	49.4

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

First to last qualifying date each year at Yamagata
Year	First date	Last date
1951	1951-06-02	1951-08-28
1952	1952-06-29	1952-09-04
1953	1953-07-02	1953-08-21
1954	1954-07-26	1954-09-26
1955	1955-06-06	1955-08-30
1956	1956-07-07	1956-09-10
1957	1957-05-18	1957-08-28
1958	1958-05-30	1958-09-07
1959	1959-05-21	1959-09-18
1960	1960-05-26	1960-09-22
1961	1961-05-27	1961-09-23
1962	1962-05-22	1962-09-20
1963	1963-05-14	1963-09-03
1964	1964-07-05	1964-08-25
1965	1965-06-29	1965-09-16
1966	1966-06-22	1966-09-10
1967	1967-05-22	1967-08-26
1968	1968-06-07	1968-08-19
1969	1969-05-10	1969-09-06
1970	1970-06-08	1970-09-09
1971	1971-05-12	1971-08-29
1972	1972-06-06	1972-09-07
1973	1973-07-05	1973-09-03
1974	1974-05-18	1974-09-03
1975	1975-07-16	1975-09-21
1976	1976-07-09	1976-09-08
1977	1977-06-06	1977-09-11
1978	1978-05-26	1978-09-10
1979	1979-06-17	1979-09-22
1980	1980-05-23	1980-09-11
1981	1981-07-06	1981-09-04
1982	1982-07-09	1982-09-26
1983	1983-04-26	1983-09-07
1984	1984-06-12	1984-09-02
1985	1985-06-07	1985-09-07
1986	1986-07-26	1986-08-31
1987	1987-06-05	1987-09-15
1988	1988-05-20	1988-08-28
1989	1989-07-08	1989-09-18
1990	1990-05-13	1990-09-03
1991	1991-05-24	1991-09-06
1992	1992-06-03	1992-09-04
1993	1993-06-25	1993-08-25
1994	1994-05-25	1994-09-11
1996	1996-05-27	1996-09-01
1998	1998-04-13	1998-09-22
1999	1999-06-13	1999-09-24
2000	2000-05-26	2000-09-16
2002	2002-06-07	2002-09-04
2003	2003-05-29	2003-09-13
2004	2004-05-30	2004-09-21
2006	2006-06-17	2006-09-10
2007	2007-06-12	2007-09-22
2008	2008-06-18	2008-09-19
2009	2009-05-21	2009-08-23
2010	2010-06-12	2010-09-11
2011	2011-06-07	2011-09-18
2013	2013-05-27	2013-09-21
2014	2014-05-28	2014-08-24
2015	2015-05-30	2015-09-03
2016	2016-06-11	2016-09-25
2017	2017-05-21	2017-08-29
2018	2018-05-16	2018-10-06
2019	2019-05-25	2019-09-11
2020	2020-06-04	2020-09-11
2021	2021-06-10	2021-09-30
2022	2022-05-06	2022-09-19
2025	2025-05-21	2025-09-17
2026	2026-05-18	2026-09-14

Every Fixed Threshold

Fixed thresholds at Yamagata
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	69	74	2025	30
35 C (95 F): Days	52	19	2025	3
90 F (32.2 C): Days	69	52	2025	15
100 F (37.8 C): Days	6	3	1994	1
0 C (32 F): Ice days (max	66	35	1977	7
0 C (32 F): Frost days (min	41	135	1970	54
-10 C (14 F): Days with min	19	7	1977	2
20 C (68 F): Tropical nights (min	41	82	2025	54
25 C (77 F): Days with min	10	8	2025	6
10 mm (0.39 in): Days with 10 mm or more rain	57	50	1980	27
25 mm (0.98 in): Days with 25 mm or more rain	57	16	2004	20
50 mm (1.97 in): Days with 50 mm or more rain	43	5	1958	16
100 mm (3.94 in): Days with 100 mm or more rain	6	1	1958	9
200 mm (7.87 in): Days with 200 mm or more rain	1	0	n/a	3

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1951.

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Data for Yamagata 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).

Yamagata Threshold Days by Year (JA000047588)

Key Facts for Yamagata Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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