Iwami Airport Threshold Days by Year (JA000047754)

12 fixed thresholds counted per year at Iwami Airport (JA000047754): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Iwami Airport Thresholds

Iwami Airport: days with 10 mm (0.39 in) or more of precipitation in 39 years, most in 1980 with 63.
Iwami Airport: days with 25 mm (0.98 in) or more of precipitation in 39 years, most in 1980 with 33.
Iwami Airport: days with 50 mm (1.97 in) or more of precipitation in 38 years, most in 1980 with 13.
Iwami Airport: days with a maximum temperature at or above 30 C (86 F) in 35 years, most in 1961 with 63.
12 fixed thresholds have at least one qualifying day at Iwami Airport.

Days at or above 30 C (86 F)

35 years with a qualifying day

Days per year at Iwami Airport with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 63 in 1961.

Days at or above 30 C (86 F) per year at Iwami Airport
Year	Days	Decade average
1955	34	32.6
1956	41	32.6
1957	19	32.6
1958	31	32.6
1959	38	32.6
1960	39	45.5
1961	63	45.5
1962	38	45.5
1963	40	45.5
1964	56	45.5
1965	39	45.5
1966	51	45.5
1967	56	45.5
1968	23	45.5
1969	50	45.5
1970	52	40.2
1971	44	40.2
1972	33	40.2
1973	46	40.2
1974	20	40.2
1975	53	40.2
1976	31	40.2
1977	29	40.2
1978	58	40.2
1979	36	40.2
1980	10	30.7
1981	45	30.7
1982	14	30.7
1983	38	30.7
1984	44	30.7
1985	50	30.7
1986	29	30.7
1987	32	30.7
1988	17	30.7
1989	28	30.7

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

First to last qualifying date each year at Iwami Airport
Year	First date	Last date
1955	1955-06-14	1955-09-17
1956	1956-06-04	1956-09-09
1957	1957-07-13	1957-08-30
1958	1958-06-21	1958-09-15
1959	1959-06-27	1959-09-16
1960	1960-06-26	1960-09-27
1961	1961-06-20	1961-09-23
1962	1962-06-01	1962-09-28
1963	1963-06-22	1963-09-01
1964	1964-07-01	1964-09-18
1965	1965-07-07	1965-08-31
1966	1966-06-22	1966-09-08
1967	1967-07-13	1967-09-11
1968	1968-06-09	1968-09-05
1969	1969-06-28	1969-09-16
1970	1970-06-30	1970-09-17
1971	1971-05-21	1971-09-25
1972	1972-06-09	1972-09-04
1973	1973-06-25	1973-09-01
1974	1974-05-28	1974-09-07
1975	1975-07-02	1975-09-20
1976	1976-07-13	1976-09-08
1977	1977-06-30	1977-09-11
1978	1978-05-25	1978-09-18
1979	1979-06-22	1979-09-22
1980	1980-06-06	1980-09-04
1981	1981-06-21	1981-09-02
1982	1982-07-10	1982-08-25
1983	1983-06-02	1983-09-20
1984	1984-06-15	1984-09-03
1985	1985-06-21	1985-09-19
1986	1986-07-16	1986-09-21
1987	1987-06-04	1987-09-07
1988	1988-07-07	1988-08-28
1989	1989-07-08	1989-09-17

Every Fixed Threshold

Fixed thresholds at Iwami Airport
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	35	63	1961	28
35 C (95 F): Days	19	11	1964	1
90 F (32.2 C): Days	35	35	1961	17
0 C (32 F): Ice days (max	2	2	1981	2
0 C (32 F): Frost days (min	34	42	1963	12
20 C (68 F): Tropical nights (min	35	103	1961	71
25 C (77 F): Days with min	33	29	1961	10
10 mm (0.39 in): Days with 10 mm or more rain	39	63	1980	59
25 mm (0.98 in): Days with 25 mm or more rain	39	33	1980	23
50 mm (1.97 in): Days with 50 mm or more rain	38	13	1980	7
100 mm (3.94 in): Days with 100 mm or more rain	27	3	1954	1
200 mm (7.87 in): Days with 200 mm or more rain	2	1	1972	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 Iwami Airport 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).

Iwami Airport Threshold Days by Year (JA000047754)

Key Facts for Iwami Airport Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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