Florence Threshold Days by Year (USC00472822)

16 fixed thresholds counted per year at Florence (USC00472822): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Florence Thresholds

Florence: days with a maximum temperature at or above 30 C (86 F) in 35 years, most in 1921 with 38.
Florence: days with a maximum temperature at or below 0 C (32 F) in 35 years, most in 1926 with 109.
Florence: nights with a minimum temperature at or below 0 C (32 F) in 35 years, most in 1907 with 215.
Florence: nights with a minimum temperature at or below -10 C (14 F) in 35 years, most in 1893 with 98.
16 fixed thresholds have at least one qualifying day at Florence.

Days at or above 30 C (86 F)

35 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 38 in 1921.

Days at or above 30 C (86 F) per year at Florence
Year	Days	Decade average
1893	19	15
1894	25	15
1895	8	15
1896	18	15
1898	15	15
1899	5	15
1900	15	10.1
1901	11	10.1
1902	7	10.1
1906	8	10.1
1907	3	10.1
1908	17	10.1
1909	10	10.1
1910	16	12.5
1911	18	12.5
1912	11	12.5
1913	10	12.5
1914	14	12.5
1915	2	12.5
1916	16	12.5
1917	13	12.5
1920	4	15.2
1921	38	15.2
1922	15	15.2
1923	19	15.2
1924	5	15.2
1925	23	15.2
1926	12	15.2
1927	11	15.2
1928	8	15.2
1929	17	15.2
1930	27	29.5
1931	34	29.5
1933	33	29.5
1934	24	29.5

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	1893-06-13	1893-08-09
1894	1894-06-08	1894-09-02
1895	1895-05-29	1895-09-20
1896	1896-05-07	1896-08-13
1898	1898-06-04	1898-09-02
1899	1899-07-23	1899-09-02
1900	1900-05-13	1900-08-27
1901	1901-06-25	1901-07-22
1902	1902-05-19	1902-07-29
1906	1906-05-17	1906-09-11
1907	1907-06-16	1907-08-06
1908	1908-06-20	1908-09-21
1909	1909-06-20	1909-08-24
1910	1910-06-18	1910-08-16
1911	1911-05-17	1911-08-15
1912	1912-06-24	1912-09-09
1913	1913-06-13	1913-09-01
1914	1914-05-26	1914-08-09
1915	1915-04-24	1915-07-13
1916	1916-07-01	1916-08-20
1917	1917-07-21	1917-08-19
1920	1920-05-30	1920-06-27
1921	1921-05-20	1921-09-01
1922	1922-05-10	1922-10-04
1923	1923-06-01	1923-09-27
1924	1924-07-28	1924-08-30
1925	1925-05-30	1925-09-17
1926	1926-05-06	1926-08-28
1927	1927-06-28	1927-09-15
1928	1928-07-02	1928-08-15
1929	1929-05-29	1929-09-04
1930	1930-05-21	1930-08-31
1931	1931-06-18	1931-09-12
1933	1933-05-19	1933-09-06
1934	1934-05-31	1934-08-17

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	35	38	1921	24
35 C (95 F): Days	16	13	1931	3
40 C (104 F): Days	1	1	1917	1
90 F (32.2 C): Days	32	23	1931	11
100 F (37.8 C): Days	3	2	1931	1
0 C (32 F): Ice days (max	35	109	1926	77
0 C (32 F): Frost days (min	35	215	1907	190
-10 C (14 F): Days with min	35	98	1893	77
-20 C (-4 F): Days with min	35	44	1912	27
-30 C (-22 F): Days with min	30	9	1912	3
20 C (68 F): Tropical nights (min	22	5	1916	2
10 mm (0.39 in): Days with 10 mm or more rain	31	37	1911	27
25 mm (0.98 in): Days with 25 mm or more rain	31	12	1909	6
50 mm (1.97 in): Days with 50 mm or more rain	24	3	1915	1
10 cm (3.9 in): Days with 10 cm or more snowfall	12	10	1926	10
25 cm (9.8 in): Days with 25 cm or more snowfall	5	2	1922	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 (USC00472822)

Key Facts for Florence Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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