Bluff Threshold Days by Year (USC00420788)

17 fixed thresholds counted per year at Bluff (USC00420788): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Bluff Thresholds

Bluff: days with a maximum temperature at or above 30 C (86 F) in 95 years, most in 2000 with 132.
Bluff: days with a maximum temperature at or above 35 C (95 F) in 95 years, most in 2002 with 82.
Bluff: days with a maximum temperature at or above 90 F (32.2 C) in 95 years, most in 2003 with 110.
Bluff: nights with a minimum temperature at or below 0 C (32 F) in 95 years, most in 1976 with 177.
17 fixed thresholds have at least one qualifying day at Bluff.

Days at or above 30 C (86 F)

95 years with a qualifying day

Days per year at Bluff with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 132 in 2000.

Days at or above 30 C (86 F) per year at Bluff
Year	Days	Decade average
1920	93	96.2
1924	106	96.2
1927	85	96.2
1928	111	96.2
1929	86	96.2
1930	103	110
1931	106	110
1932	101	110
1933	114	110
1934	121	110
1935	106	110
1936	112	110
1938	116	110
1939	111	110
1940	113	110.4
1943	115	110.4
1944	110	110.4
1945	102	110.4
1946	114	110.4
1947	120	110.4
1948	97	110.4
1949	112	110.4
1950	110	113.9
1951	109	113.9
1952	121	113.9
1953	119	113.9
1954	127	113.9
1955	99	113.9
1956	125	113.9
1957	92	113.9
1958	124	113.9
1959	113	113.9
1960	126	101
1961	98	101
1962	110	101
1963	116	101
1964	94	101
1965	77	101
1966	112	101
1967	83	101
1968	78	101
1969	116	101
1970	98	101.7
1971	99	101.7
1972	101	101.7
1973	88	101.7
1974	111	101.7
1975	87	101.7
1976	113	101.7
1977	101	101.7
1978	111	101.7
1979	108	101.7
1980	114	101.3
1981	104	101.3
1982	98	101.3
1983	106	101.3
1986	94	101.3
1987	82	101.3
1988	100	101.3
1989	112	101.3
1990	100	99.8
1991	86	99.8
1992	87	99.8
1993	90	99.8
1994	117	99.8
1995	92	99.8
1996	114	99.8
1997	108	99.8
1999	104	99.8
2000	132	116.9
2002	119	116.9
2003	126	116.9
2004	124	116.9
2005	110	116.9
2006	115	116.9
2007	125	116.9
2008	102	116.9
2009	99	116.9
2010	113	111.7
2011	112	111.7
2012	121	111.7
2013	107	111.7
2014	117	111.7
2015	97	111.7
2016	105	111.7
2017	109	111.7
2018	131	111.7
2019	105	111.7
2020	126	120.7
2021	123	120.7
2022	120	120.7
2023	106	120.7
2024	126	120.7
2025	115	120.7
2026	129	120.7

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

First to last qualifying date each year at Bluff
Year	First date	Last date
1920	1920-05-12	1920-09-30
1924	1924-05-10	1924-09-25
1927	1927-04-26	1927-09-05
1928	1928-04-30	1928-09-30
1929	1929-05-09	1929-09-15
1930	1930-04-22	1930-09-21
1931	1931-05-14	1931-09-29
1932	1932-05-18	1932-09-21
1933	1933-05-26	1933-09-30
1934	1934-05-06	1934-09-16
1935	1935-06-06	1935-09-22
1936	1936-05-03	1936-09-24
1938	1938-05-13	1938-09-30
1939	1939-05-02	1939-09-22
1940	1940-05-03	1940-09-16
1943	1943-04-25	1943-10-18
1944	1944-05-13	1944-10-10
1945	1945-05-01	1945-10-07
1946	1946-04-18	1946-09-28
1947	1947-05-01	1947-10-06
1948	1948-04-17	1948-10-14
1949	1949-04-23	1949-10-04
1950	1950-04-21	1950-10-13
1951	1951-05-05	1951-10-11
1952	1952-05-03	1952-10-04
1953	1953-05-21	1953-10-09
1954	1954-04-18	1954-10-01
1955	1955-06-06	1955-10-03
1956	1956-05-04	1956-10-07
1957	1957-05-28	1957-10-01
1958	1958-05-06	1958-10-16
1959	1959-04-05	1959-09-19
1960	1960-04-10	1960-10-01
1961	1961-05-10	1961-09-28
1962	1962-04-15	1962-09-20
1963	1963-04-13	1963-10-04
1964	1964-05-16	1964-09-13
1965	1965-05-17	1965-09-27
1966	1966-04-08	1966-09-25
1967	1967-05-09	1967-09-22
1968	1968-05-20	1968-09-11
1969	1969-04-22	1969-10-01
1970	1970-05-16	1970-09-11
1971	1971-05-15	1971-09-17
1972	1972-05-15	1972-09-23
1973	1973-05-10	1973-09-21
1974	1974-05-08	1974-09-20
1975	1975-05-11	1975-09-28
1976	1976-05-03	1976-09-19
1977	1977-05-29	1977-10-05
1978	1978-05-14	1978-10-12
1979	1979-05-15	1979-10-10
1980	1980-05-20	1980-10-09
1981	1981-04-24	1981-09-29
1982	1982-05-23	1982-09-26
1983	1983-05-23	1983-09-26
1986	1986-05-02	1986-09-15
1987	1987-05-10	1987-10-05
1988	1988-05-12	1988-09-17
1989	1989-04-17	1989-10-02
1990	1990-05-22	1990-09-16
1991	1991-05-08	1991-09-26
1992	1992-04-27	1992-09-24
1993	1993-05-20	1993-09-30
1994	1994-04-20	1994-10-01
1995	1995-06-05	1995-09-20
1996	1996-04-24	1996-09-10
1997	1997-05-06	1997-09-21
1999	1999-05-13	1999-09-26
2000	2000-04-26	2000-10-03
2002	2002-04-24	2002-09-24
2003	2003-05-16	2003-10-01
2004	2004-04-28	2004-09-18
2005	2005-05-16	2005-09-27
2006	2006-04-22	2006-09-12
2007	2007-04-28	2007-09-16
2008	2008-05-17	2008-09-27
2009	2009-04-22	2009-09-30
2010	2010-05-17	2010-10-01
2011	2011-05-06	2011-09-29
2012	2012-04-22	2012-10-03
2013	2013-04-29	2013-09-18
2014	2014-05-04	2014-09-27
2015	2015-05-01	2015-10-02
2016	2016-04-22	2016-09-22
2017	2017-05-05	2017-09-13
2018	2018-05-06	2018-09-30
2019	2019-06-01	2019-09-29
2020	2020-04-27	2020-09-27
2021	2021-05-06	2021-09-25
2022	2022-05-06	2022-09-20
2023	2023-04-12	2023-09-30
2024	2024-04-22	2024-10-05
2025	2025-05-11	2025-10-03
2026	2026-03-20	2026-09-22

Every Fixed Threshold

Fixed thresholds at Bluff
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	95	132	2000	129
35 C (95 F): Days	95	82	2002	83
40 C (104 F): Days	45	17	2002	9
90 F (32.2 C): Days	95	110	2003	116
100 F (37.8 C): Days	94	54	2002	46
0 C (32 F): Ice days (max	72	35	1932	1
0 C (32 F): Frost days (min	95	177	1976	65
-10 C (14 F): Days with min	93	60	1976	9
-20 C (-4 F): Days with min	28	16	1933	2
-30 C (-22 F): Days with min	2	1	1963	1
20 C (68 F): Tropical nights (min	94	50	1936	40
25 C (77 F): Days with min	15	3	1931	1
10 mm (0.39 in): Days with 10 mm or more rain	95	13	1957	3
25 mm (0.98 in): Days with 25 mm or more rain	25	4	2015	1
50 mm (1.97 in): Days with 50 mm or more rain	3	1	1966	1
10 cm (3.9 in): Days with 10 cm or more snowfall	37	3	1974	1
25 cm (9.8 in): Days with 25 cm or more snowfall	2	1	1991	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1920.

Download the Data

Data for Bluff 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).

Bluff Threshold Days by Year (USC00420788)

Key Facts for Bluff Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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