Florence Threshold Days by Year (USC00012971)

17 fixed thresholds counted per year at Florence (USC00012971): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Florence Thresholds

Florence: nights with a minimum temperature at or below 0 C (32 F) in 63 years, most in 1916 with 104.
Florence: nights with a minimum temperature at or above 20 C (68 F) in 63 years, most in 1911 with 115.
Florence: days with a maximum temperature at or above 30 C (86 F) in 61 years, most in 1925 with 153.
Florence: days with a maximum temperature at or above 90 F (32.2 C) in 61 years, most in 1925 with 128.
17 fixed thresholds have at least one qualifying day at Florence.

Days at or above 30 C (86 F)

61 years with a qualifying day

Days per year at Florence with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 153 in 1925.

Days at or above 30 C (86 F) per year at Florence
Year	Days	Decade average
1893	72	98.3
1894	74	98.3
1895	90	98.3
1896	104	98.3
1897	110	98.3
1898	114	98.3
1899	124	98.3
1900	90	106.3
1902	118	106.3
1903	93	106.3
1904	105	106.3
1905	102	106.3
1906	118	106.3
1907	110	106.3
1908	116	106.3
1909	105	106.3
1910	89	101.7
1911	105	101.7
1912	106	101.7
1916	119	101.7
1917	96	101.7
1919	95	101.7
1920	116	113.3
1921	130	113.3
1922	88	113.3
1923	91	113.3
1924	108	113.3
1925	153	113.3
1926	120	113.3
1927	107	113.3
1929	107	113.3
1930	110	116.5
1931	108	116.5
1932	103	116.5
1933	120	116.5
1934	121	116.5
1935	103	116.5
1936	132	116.5
1937	124	116.5
1938	119	116.5
1939	125	116.5
1940	102	102
1956	105	100
1957	96	100
1958	89	100
1959	110	100
1960	109	108.8
1963	125	108.8
1964	111	108.8
1965	124	108.8
1966	100	108.8
1967	89	108.8
1968	106	108.8
1969	106	108.8
1970	123	97.7
1971	108	97.7
1972	104	97.7
1973	105	97.7
1974	73	97.7
1975	85	97.7
1976	86	97.7

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

First to last qualifying date each year at Florence
Year	First date	Last date
1893	1893-05-26	1893-10-10
1894	1894-04-17	1894-09-09
1895	1895-05-04	1895-09-25
1896	1896-04-17	1896-09-19
1897	1897-05-21	1897-10-17
1898	1898-04-19	1898-10-05
1899	1899-04-27	1899-10-19
1900	1900-05-12	1900-09-29
1902	1902-04-21	1902-09-26
1903	1903-05-21	1903-10-23
1904	1904-05-22	1904-10-11
1905	1905-04-28	1905-10-15
1906	1906-04-10	1906-10-22
1907	1907-03-20	1907-10-03
1908	1908-03-05	1908-10-20
1909	1909-04-18	1909-10-18
1910	1910-03-24	1910-10-03
1911	1911-05-10	1911-10-07
1912	1912-03-19	1912-10-11
1916	1916-04-16	1916-10-17
1917	1917-04-18	1917-09-23
1919	1919-06-07	1919-10-11
1920	1920-04-18	1920-10-23
1921	1921-03-16	1921-09-30
1922	1922-04-08	1922-09-25
1923	1923-05-21	1923-10-02
1924	1924-04-17	1924-10-21
1925	1925-04-13	1925-10-05
1926	1926-04-08	1926-10-20
1927	1927-04-19	1927-10-31
1929	1929-03-25	1929-09-30
1930	1930-04-12	1930-10-01
1931	1931-04-18	1931-10-26
1932	1932-04-22	1932-09-19
1933	1933-05-11	1933-10-01
1934	1934-04-03	1934-10-22
1935	1935-03-23	1935-10-19
1936	1936-04-14	1936-09-29
1937	1937-04-17	1937-10-30
1938	1938-04-28	1938-10-19
1939	1939-03-23	1939-10-27
1940	1940-04-02	1940-10-29
1956	1956-05-05	1956-09-18
1957	1957-04-20	1957-08-31
1958	1958-04-23	1958-08-31
1959	1959-04-07	1959-10-06
1960	1960-04-20	1960-09-24
1963	1963-03-31	1963-10-27
1964	1964-04-21	1964-09-28
1965	1965-04-10	1965-10-18
1966	1966-03-21	1966-09-28
1967	1967-03-12	1967-10-15
1968	1968-04-18	1968-11-01
1969	1969-04-04	1969-10-12
1970	1970-04-23	1970-10-02
1971	1971-04-17	1971-11-01
1972	1972-04-15	1972-09-26
1973	1973-05-10	1973-10-10
1974	1974-04-27	1974-09-28
1975	1975-04-27	1975-10-14
1976	1976-04-17	1976-09-26

Every Fixed Threshold

Fixed thresholds at Florence
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	61	153	1925	86
35 C (95 F): Days	59	72	1925	10
40 C (104 F): Days	10	9	1925	1
90 F (32.2 C): Days	61	128	1925	43
100 F (37.8 C): Days	30	27	1930	3
0 C (32 F): Ice days (max	55	11	1899	2
0 C (32 F): Frost days (min	63	104	1916	67
-10 C (14 F): Days with min	56	17	1940	4
-20 C (-4 F): Days with min	7	4	1940	2
20 C (68 F): Tropical nights (min	63	115	1911	48
25 C (77 F): Days with min	11	8	1902	1
10 mm (0.39 in): Days with 10 mm or more rain	59	66	1932	40
25 mm (0.98 in): Days with 25 mm or more rain	59	26	1920	11
50 mm (1.97 in): Days with 50 mm or more rain	58	8	1936	2
100 mm (3.94 in): Days with 100 mm or more rain	13	1	1897	1
10 cm (3.9 in): Days with 10 cm or more snowfall	9	2	1936	2
25 cm (9.8 in): Days with 25 cm or more snowfall	1	1	1964	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1893.

Download the Data

Data for Florence 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).

Florence Threshold Days by Year (USC00012971)

Key Facts for Florence Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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