Hamilton Rbg Threshold Days by Year (CA006153300)

15 fixed thresholds counted per year at Hamilton Rbg (CA006153300): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Hamilton Rbg Thresholds

Hamilton Rbg: days with a maximum temperature at or above 30 C (86 F) in 33 years, most in 1959 with 43.
Hamilton Rbg: days with a maximum temperature at or above 90 F (32.2 C) in 33 years, most in 1959 with 24.
Hamilton Rbg: days with a maximum temperature at or below 0 C (32 F) in 33 years, most in 1978 with 75.
Hamilton Rbg: nights with a minimum temperature at or below 0 C (32 F) in 33 years, most in 1962 with 151.
15 fixed thresholds have at least one qualifying day at Hamilton Rbg.

Days at or above 30 C (86 F)

33 years with a qualifying day

Days per year at Hamilton Rbg with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 43 in 1959.

Days at or above 30 C (86 F) per year at Hamilton Rbg
Year	Days	Decade average
1951	13	23.4
1952	34	23.4
1953	26	23.4
1954	24	23.4
1955	36	23.4
1956	11	23.4
1957	16	23.4
1958	8	23.4
1959	43	23.4
1960	13	18.5
1961	11	18.5
1962	18	18.5
1963	17	18.5
1964	22	18.5
1965	16	18.5
1966	32	18.5
1967	8	18.5
1968	19	18.5
1969	29	18.5
1970	19	18.3
1971	22	18.3
1972	9	18.3
1973	24	18.3
1974	14	18.3
1975	17	18.3
1976	16	18.3
1977	15	18.3
1978	24	18.3
1979	23	18.3
1980	24	21.5
1981	14	21.5
1982	11	21.5
1983	37	21.5

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

First to last qualifying date each year at Hamilton Rbg
Year	First date	Last date
1951	1951-05-15	1951-10-05
1952	1952-06-06	1952-09-13
1953	1953-05-09	1953-09-04
1954	1954-06-10	1954-09-07
1955	1955-05-04	1955-09-19
1956	1956-05-30	1956-08-16
1957	1957-06-15	1957-08-11
1958	1958-06-30	1958-08-29
1959	1959-05-20	1959-09-28
1960	1960-04-23	1960-09-08
1961	1961-06-12	1961-09-13
1962	1962-04-27	1962-09-13
1963	1963-06-09	1963-08-22
1964	1964-05-19	1964-09-10
1965	1965-05-26	1965-09-22
1966	1966-06-04	1966-09-02
1967	1967-06-11	1967-08-17
1968	1968-06-06	1968-08-24
1969	1969-05-28	1969-09-13
1970	1970-06-08	1970-09-24
1971	1971-05-18	1971-10-02
1972	1972-06-14	1972-08-24
1973	1973-06-10	1973-09-05
1974	1974-06-09	1974-08-22
1975	1975-05-21	1975-08-10
1976	1976-06-07	1976-08-22
1977	1977-05-17	1977-09-01
1978	1978-05-19	1978-09-11
1979	1979-05-08	1979-08-05
1980	1980-05-05	1980-08-27
1981	1981-06-15	1981-07-19
1982	1982-07-06	1982-09-14
1983	1983-06-12	1983-09-10

Every Fixed Threshold

Fixed thresholds at Hamilton Rbg
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	33	43	1959	37
35 C (95 F): Days	12	10	1955	2
90 F (32.2 C): Days	33	24	1959	14
100 F (37.8 C): Days	2	2	1955	2
0 C (32 F): Ice days (max	33	75	1978	43
0 C (32 F): Frost days (min	33	151	1962	121
-10 C (14 F): Days with min	33	59	1978	28
-20 C (-4 F): Days with min	29	8	1976	4
20 C (68 F): Tropical nights (min	33	24	1955	22
25 C (77 F): Days with min	1	1	1972	1
10 mm (0.39 in): Days with 10 mm or more rain	33	38	1977	37
25 mm (0.98 in): Days with 25 mm or more rain	33	9	1962	5
50 mm (1.97 in): Days with 50 mm or more rain	16	2	1958	1
10 cm (3.9 in): Days with 10 cm or more snowfall	32	7	1951	3
25 cm (9.8 in): Days with 25 cm or more snowfall	6	2	1965	1

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

Download the Data

Data for Hamilton Rbg 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).

Hamilton Rbg Threshold Days by Year (CA006153300)

Key Facts for Hamilton Rbg Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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