Ormiston Threshold Days by Year (CA004015680)

16 fixed thresholds counted per year at Ormiston (CA004015680): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ormiston Thresholds

Ormiston: days with a maximum temperature at or above 30 C (86 F) in 32 years, most in 1961 with 42.
Ormiston: days with a maximum temperature at or above 90 F (32.2 C) in 32 years, most in 1961 with 29.
Ormiston: days with a maximum temperature at or below 0 C (32 F) in 32 years, most in 1970 with 122.
Ormiston: nights with a minimum temperature at or below 0 C (32 F) in 32 years, most in 1959 with 211.
16 fixed thresholds have at least one qualifying day at Ormiston.

Days at or above 30 C (86 F)

32 years with a qualifying day

Days per year at Ormiston with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 42 in 1961.

Days at or above 30 C (86 F) per year at Ormiston
Year	Days	Decade average
1952	15	16.4
1953	10	16.4
1954	8	16.4
1955	14	16.4
1956	14	16.4
1957	25	16.4
1958	24	16.4
1959	21	16.4
1960	22	22.1
1961	42	22.1
1962	11	22.1
1963	16	22.1
1964	22	22.1
1965	14	22.1
1966	23	22.1
1967	33	22.1
1968	14	22.1
1969	24	22.1
1970	35	18.2
1971	25	18.2
1972	14	18.2
1973	20	18.2
1974	15	18.2
1975	17	18.2
1976	9	18.2
1977	11	18.2
1978	13	18.2
1979	23	18.2
1980	18	21.8
1981	28	21.8
1982	8	21.8
1983	33	21.8

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

First to last qualifying date each year at Ormiston
Year	First date	Last date
1952	1952-04-26	1952-09-26
1953	1953-05-06	1953-08-21
1954	1954-05-19	1954-08-30
1955	1955-06-29	1955-09-02
1956	1956-06-01	1956-09-26
1957	1957-05-30	1957-09-07
1958	1958-05-28	1958-09-12
1959	1959-06-03	1959-08-28
1960	1960-05-12	1960-09-03
1961	1961-05-29	1961-09-16
1962	1962-06-26	1962-08-21
1963	1963-05-30	1963-10-03
1964	1964-05-17	1964-10-13
1965	1965-07-03	1965-08-12
1966	1966-06-20	1966-09-11
1967	1967-06-27	1967-09-28
1968	1968-06-02	1968-09-11
1969	1969-05-26	1969-09-13
1970	1970-06-03	1970-09-05
1971	1971-07-15	1971-09-11
1972	1972-05-31	1972-08-30
1973	1973-05-31	1973-08-30
1974	1974-06-17	1974-08-06
1975	1975-06-24	1975-08-06
1976	1976-07-17	1976-09-17
1977	1977-05-12	1977-08-24
1978	1978-07-16	1978-09-04
1979	1979-06-12	1979-09-16
1980	1980-04-20	1980-09-07
1981	1981-05-20	1981-09-19
1982	1982-06-22	1982-09-09
1983	1983-06-10	1983-09-26

Every Fixed Threshold

Fixed thresholds at Ormiston
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	32	42	1961	33
35 C (95 F): Days	26	6	1959	6
90 F (32.2 C): Days	32	29	1961	15
100 F (37.8 C): Days	5	2	1983	2
0 C (32 F): Ice days (max	32	122	1970	103
0 C (32 F): Frost days (min	32	211	1959	200
-10 C (14 F): Days with min	32	133	1955	88
-20 C (-4 F): Days with min	32	76	1978	35
-30 C (-22 F): Days with min	32	21	1972	10
-40 C (-40 F): Days with min	8	3	1954	2
20 C (68 F): Tropical nights (min	11	4	1961	2
10 mm (0.39 in): Days with 10 mm or more rain	27	18	1954	8
25 mm (0.98 in): Days with 25 mm or more rain	19	5	1953	2
50 mm (1.97 in): Days with 50 mm or more rain	3	1	1953	1
10 cm (3.9 in): Days with 10 cm or more snowfall	18	3	1954	1
25 cm (9.8 in): Days with 25 cm or more snowfall	1	1	1983	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1952.

Download the Data

Data for Ormiston 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).

Ormiston Threshold Days by Year (CA004015680)

Key Facts for Ormiston Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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