Palmetto Threshold Days by Year (USC00265931)

13 fixed thresholds counted per year at Palmetto (USC00265931): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Palmetto Thresholds

Palmetto: nights with a minimum temperature at or below 0 C (32 F) in 18 years, most in 1893 with 222.
Palmetto: nights with a minimum temperature at or below -10 C (14 F) in 18 years, most in 1898 with 73.
Palmetto: nights with a minimum temperature at or below -20 C (-4 F) in 17 years, most in 1894 with 9.
Palmetto: days with a maximum temperature at or above 30 C (86 F) in 16 years, most in 1898 with 56.
13 fixed thresholds have at least one qualifying day at Palmetto.

Days at or above 30 C (86 F)

16 years with a qualifying day

Days per year at Palmetto with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 56 in 1898.

Days at or above 30 C (86 F) per year at Palmetto
Year	Days	Decade average
1890	33	37.6
1891	34	37.6
1892	42	37.6
1893	20	37.6
1894	31	37.6
1895	33	37.6
1896	38	37.6
1897	39	37.6
1898	56	37.6
1899	50	37.6
1900	43	27.5
1903	29	27.5
1904	10	27.5
1905	30	27.5
1906	31	27.5
1907	22	27.5

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

First to last qualifying date each year at Palmetto
Year	First date	Last date
1890	1890-05-25	1890-09-13
1891	1891-06-28	1891-09-02
1892	1892-05-20	1892-09-12
1893	1893-06-30	1893-08-24
1894	1894-07-03	1894-08-27
1895	1895-06-22	1895-08-25
1896	1896-05-26	1896-08-27
1897	1897-05-29	1897-08-24
1898	1898-06-17	1898-09-18
1899	1899-06-10	1899-09-30
1900	1900-05-31	1900-08-26
1903	1903-06-25	1903-09-04
1904	1904-07-18	1904-09-08
1905	1905-06-21	1905-08-20
1906	1906-06-18	1906-08-16
1907	1907-06-30	1907-09-11

Every Fixed Threshold

Fixed thresholds at Palmetto
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	16	56	1898	22
35 C (95 F): Days	7	9	1898	2
90 F (32.2 C): Days	16	27	1898	3
0 C (32 F): Ice days (max	15	19	1898	13
0 C (32 F): Frost days (min	18	222	1893	213
-10 C (14 F): Days with min	18	73	1898	32
-20 C (-4 F): Days with min	17	9	1894	1
10 mm (0.39 in): Days with 10 mm or more rain	15	38	1906	2
25 mm (0.98 in): Days with 25 mm or more rain	12	8	1906	7
50 mm (1.97 in): Days with 50 mm or more rain	5	2	1893	1
10 cm (3.9 in): Days with 10 cm or more snowfall	1	12	1897	12
25 cm (9.8 in): Days with 25 cm or more snowfall	1	3	1897	3
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	1897	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1890.

Download the Data

Data for Palmetto 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).

Palmetto Threshold Days by Year (USC00265931)

Key Facts for Palmetto Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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