Griffin Threshold Days by Year (USC00093936)

15 fixed thresholds counted per year at Griffin (USC00093936): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Griffin Thresholds

Griffin: days with a maximum temperature at or above 30 C (86 F) in 67 years, most in 1925 with 152.
Griffin: days with a maximum temperature at or above 90 F (32.2 C) in 67 years, most in 1925 with 117.
Griffin: nights with a minimum temperature at or below 0 C (32 F) in 66 years, most in 1905 with 64.
Griffin: nights with a minimum temperature at or above 20 C (68 F) in 66 years, most in 1911 with 112.
15 fixed thresholds have at least one qualifying day at Griffin.

Days at or above 30 C (86 F)

67 years with a qualifying day

Days per year at Griffin with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 152 in 1925.

Days at or above 30 C (86 F) per year at Griffin
Year	Days	Decade average
1902	120	109.3
1903	94	109.3
1904	115	109.3
1905	108	109.3
1906	115	109.3
1907	114	109.3
1908	106	109.3
1909	102	109.3
1910	86	107.6
1911	117	107.6
1912	96	107.6
1913	112	107.6
1914	115	107.6
1915	123	107.6
1916	101	107.6
1917	105	107.6
1918	107	107.6
1919	114	107.6
1920	107	111.6
1921	126	111.6
1922	94	111.6
1923	104	111.6
1924	99	111.6
1925	152	111.6
1926	119	111.6
1927	125	111.6
1928	92	111.6
1929	98	111.6
1930	103	109.4
1931	124	109.4
1932	95	109.4
1933	118	109.4
1934	112	109.4
1935	104	109.4
1936	118	109.4
1937	114	109.4
1938	103	109.4
1939	103	109.4
1940	96	94.2
1941	130	94.2
1942	106	94.2
1943	111	94.2
1944	99	94.2
1945	92	94.2
1946	56	94.2
1947	88	94.2
1948	87	94.2
1949	77	94.2
1950	74	105.5
1951	95	105.5
1952	106	105.5
1953	104	105.5
1954	133	105.5
1955	120	105.5
1956	114	105.5
1957	96	105.5
1958	108	105.5
1959	105	105.5
1960	114	84.8
1961	85	84.8
1962	121	84.8
1963	90	84.8
1964	88	84.8
1965	79	84.8
1966	65	84.8
1967	46	84.8
1968	75	84.8

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

First to last qualifying date each year at Griffin
Year	First date	Last date
1902	1902-04-26	1902-10-04
1903	1903-05-22	1903-10-08
1904	1904-05-22	1904-10-12
1905	1905-04-29	1905-09-20
1906	1906-04-12	1906-09-24
1907	1907-03-21	1907-09-25
1908	1908-03-17	1908-10-20
1909	1909-04-07	1909-10-15
1910	1910-03-28	1910-10-22
1911	1911-05-01	1911-10-08
1912	1912-04-12	1912-10-13
1913	1913-04-19	1913-10-12
1914	1914-04-18	1914-09-22
1915	1915-04-18	1915-10-04
1916	1916-04-20	1916-10-17
1917	1917-04-17	1917-09-22
1918	1918-05-10	1918-10-08
1919	1919-04-08	1919-10-29
1920	1920-05-01	1920-10-18
1921	1921-03-15	1921-09-30
1922	1922-04-13	1922-10-07
1923	1923-04-22	1923-10-03
1924	1924-04-25	1924-10-20
1925	1925-03-09	1925-10-17
1926	1926-05-01	1926-10-19
1927	1927-04-17	1927-10-24
1928	1928-05-04	1928-10-17
1929	1929-03-24	1929-10-17
1930	1930-04-12	1930-09-26
1931	1931-04-17	1931-10-25
1932	1932-04-06	1932-09-22
1933	1933-05-06	1933-10-02
1934	1934-04-03	1934-10-23
1935	1935-03-22	1935-11-01
1936	1936-04-15	1936-10-23
1937	1937-04-18	1937-10-30
1938	1938-04-29	1938-10-20
1939	1939-03-24	1939-10-24
1940	1940-04-02	1940-10-28
1941	1941-04-18	1941-10-24
1942	1942-04-18	1942-10-17
1943	1943-04-10	1943-10-21
1944	1944-05-13	1944-10-07
1945	1945-03-16	1945-10-20
1946	1946-04-07	1946-09-21
1947	1947-04-08	1947-10-18
1948	1948-04-12	1948-09-21
1949	1949-05-06	1949-10-25
1950	1950-04-28	1950-10-31
1951	1951-05-02	1951-10-07
1952	1952-05-01	1952-10-02
1953	1953-05-01	1953-10-12
1954	1954-04-04	1954-10-14
1955	1955-04-16	1955-10-07
1956	1956-04-28	1956-09-18
1957	1957-04-28	1957-09-22
1958	1958-04-23	1958-10-10
1959	1959-04-07	1959-10-06
1960	1960-04-23	1960-10-03
1961	1961-05-31	1961-11-02
1962	1962-04-30	1962-10-13
1963	1963-03-31	1963-10-21
1964	1964-04-24	1964-09-25
1965	1965-04-09	1965-09-23
1966	1966-05-09	1966-09-07
1967	1967-03-12	1967-10-06
1968	1968-05-24	1968-10-02

Every Fixed Threshold

Fixed thresholds at Griffin
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	67	152	1925	75
35 C (95 F): Days	64	84	1925	8
40 C (104 F): Days	3	9	1925	1
90 F (32.2 C): Days	67	117	1925	29
100 F (37.8 C): Days	23	36	1925	1
0 C (32 F): Ice days (max	25	7	1917	2
0 C (32 F): Frost days (min	66	64	1905	62
-10 C (14 F): Days with min	38	9	1917	1
20 C (68 F): Tropical nights (min	66	112	1911	73
25 C (77 F): Days with min	14	4	1902	1
10 mm (0.39 in): Days with 10 mm or more rain	66	53	1929	37
25 mm (0.98 in): Days with 25 mm or more rain	66	23	1936	10
50 mm (1.97 in): Days with 50 mm or more rain	60	12	1929	3
100 mm (3.94 in): Days with 100 mm or more rain	26	3	1916	1
10 cm (3.9 in): Days with 10 cm or more snowfall	2	1	1936	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1902.

Download the Data

Data for Griffin 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).

Griffin Threshold Days by Year (USC00093936)

Key Facts for Griffin Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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