Hamilton 2W Threshold Days by Year (USC00233568)

18 fixed thresholds counted per year at Hamilton 2W (USC00233568): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Hamilton 2W Thresholds

Hamilton 2W: days with 10 mm (0.39 in) or more of precipitation in 64 years, most in 2009 with 47.
Hamilton 2W: days with 25 mm (0.98 in) or more of precipitation in 64 years, most in 1961 with 19.
Hamilton 2W: days with a maximum temperature at or above 30 C (86 F) in 62 years, most in 1956 with 99.
Hamilton 2W: days with a maximum temperature at or above 90 F (32.2 C) in 62 years, most in 1980 with 65.
18 fixed thresholds have at least one qualifying day at Hamilton 2W.

Days at or above 30 C (86 F)

62 years with a qualifying day

Days per year at Hamilton 2W with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 99 in 1956.

Days at or above 30 C (86 F) per year at Hamilton 2W
Year	Days	Decade average
1955	75	70.2
1956	99	70.2
1957	56	70.2
1958	45	70.2
1959	76	70.2
1960	64	67.6
1961	54	67.6
1962	75	67.6
1963	93	67.6
1964	71	67.6
1965	62	67.6
1966	62	67.6
1967	60	67.6
1968	67	67.6
1971	67	59.7
1972	56	59.7
1973	61	59.7
1974	44	59.7
1975	71	59.7
1976	71	59.7
1977	53	59.7
1978	65	59.7
1979	49	59.7
1980	90	60.6
1981	40	60.6
1982	40	60.6
1983	74	60.6
1984	59	60.6
1985	49	60.6
1986	52	60.6
1987	67	60.6
1988	83	60.6
1989	52	60.6
1990	67	58.7
1991	78	58.7
1992	38	58.7
1993	60	58.7
1994	62	58.7
1995	68	58.7
1996	56	58.7
1997	53	58.7
1998	61	58.7
1999	44	58.7
2000	61	50.1
2001	51	50.1
2002	69	50.1
2003	59	50.1
2004	26	50.1
2005	58	50.1
2006	63	50.1
2007	63	50.1
2008	28	50.1
2009	23	50.1
2010	58	58.6
2011	59	58.6
2012	79	58.6
2013	55	58.6
2014	27	58.6
2016	55	58.6
2017	56	58.6
2018	80	58.6
2020	55	55

For each year, a bar from the first to the last day at Hamilton 2W meeting 30 C (86 F).

First to last qualifying date each year at Hamilton 2W
Year	First date	Last date
1955	1955-06-19	1955-09-21
1956	1956-04-01	1956-10-12
1957	1957-06-05	1957-09-01
1958	1958-06-04	1958-09-24
1959	1959-05-01	1959-09-20
1960	1960-05-23	1960-10-11
1961	1961-05-31	1961-09-10
1962	1962-05-05	1962-10-14
1963	1963-05-08	1963-10-19
1964	1964-05-16	1964-09-10
1965	1965-04-20	1965-10-10
1966	1966-05-05	1966-10-14
1967	1967-04-16	1967-10-04
1968	1968-05-01	1968-10-14
1971	1971-06-01	1971-10-02
1972	1972-04-15	1972-09-20
1973	1973-06-08	1973-09-22
1974	1974-05-21	1974-09-19
1975	1975-04-18	1975-10-14
1976	1976-06-10	1976-10-03
1977	1977-06-04	1977-09-09
1978	1978-05-27	1978-10-22
1979	1979-06-05	1979-10-09
1980	1980-04-22	1980-10-09
1981	1981-04-27	1981-10-01
1982	1982-06-25	1982-10-06
1983	1983-06-17	1983-10-03
1984	1984-06-02	1984-09-25
1985	1985-05-27	1985-09-20
1986	1986-03-30	1986-09-29
1987	1987-04-20	1987-09-06
1988	1988-05-15	1988-09-23
1989	1989-04-22	1989-10-15
1990	1990-04-24	1990-10-06
1991	1991-03-27	1991-10-24
1992	1992-04-15	1992-10-05
1993	1993-06-11	1993-10-08
1994	1994-05-24	1994-10-02
1995	1995-06-08	1995-10-13
1996	1996-04-12	1996-09-08
1997	1997-05-18	1997-10-07
1998	1998-05-20	1998-09-30
1999	1999-06-05	1999-09-08
2000	2000-05-12	2000-09-23
2001	2001-04-28	2001-09-06
2002	2002-04-16	2002-10-02
2003	2003-05-31	2003-09-11
2004	2004-05-07	2004-09-23
2005	2005-05-20	2005-09-26
2006	2006-04-14	2006-10-04
2007	2007-06-16	2007-10-06
2008	2008-05-26	2008-09-03
2009	2009-05-24	2009-08-15
2010	2010-05-25	2010-10-09
2011	2011-04-04	2011-09-13
2012	2012-04-03	2012-09-13
2013	2013-05-15	2013-10-05
2014	2014-05-08	2014-09-10
2016	2016-05-30	2016-10-18
2017	2017-05-16	2017-09-26
2018	2018-05-11	2018-10-04
2020	2020-04-09	2020-09-27

Every Fixed Threshold

Fixed thresholds at Hamilton 2W
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	62	99	1956	55
35 C (95 F): Days	60	39	1980	15
40 C (104 F): Days	7	4	1980	3
90 F (32.2 C): Days	62	65	1980	17
100 F (37.8 C): Days	29	16	1980	1
0 C (32 F): Ice days (max	62	65	1978	17
0 C (32 F): Frost days (min	61	158	1995	131
-10 C (14 F): Days with min	61	72	1978	17
-20 C (-4 F): Days with min	57	27	1979	6
-30 C (-22 F): Days with min	6	4	1979	2
20 C (68 F): Tropical nights (min	61	44	1956	23
25 C (77 F): Days with min	16	2	1956	1
10 mm (0.39 in): Days with 10 mm or more rain	64	47	2009	35
25 mm (0.98 in): Days with 25 mm or more rain	64	19	1961	12
50 mm (1.97 in): Days with 50 mm or more rain	59	6	1982	1
100 mm (3.94 in): Days with 100 mm or more rain	14	2	1959	1
10 cm (3.9 in): Days with 10 cm or more snowfall	38	6	1962	2
25 cm (9.8 in): Days with 25 cm or more snowfall	2	1	1962	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 Hamilton 2W 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).

Hamilton 2W Threshold Days by Year (USC00233568)

Key Facts for Hamilton 2W Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related