Kennett Square Threshold Days by Year (USC00364533)

14 fixed thresholds counted per year at Kennett Square (USC00364533): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Kennett Square Thresholds

Kennett Square: days with a maximum temperature at or above 30 C (86 F) in 23 years, most in 1900 with 67.
Kennett Square: days with a maximum temperature at or above 90 F (32.2 C) in 23 years, most in 1900 with 37.
Kennett Square: days with a maximum temperature at or below 0 C (32 F) in 23 years, most in 1904 with 43.
Kennett Square: nights with a minimum temperature at or below 0 C (32 F) in 23 years, most in 1904 with 136.
14 fixed thresholds have at least one qualifying day at Kennett Square.

Days at or above 30 C (86 F)

23 years with a qualifying day

Days per year at Kennett Square with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 67 in 1900.

Days at or above 30 C (86 F) per year at Kennett Square
Year	Days	Decade average
1894	47	48.7
1895	59	48.7
1896	47	48.7
1897	37	48.7
1898	52	48.7
1899	50	48.7
1900	67	28.4
1901	49	28.4
1902	16	28.4
1903	13	28.4
1904	12	28.4
1908	26	28.4
1909	16	28.4
1910	14	29
1911	50	29
1912	38	29
1913	31	29
1914	35	29
1915	17	29
1916	29	29
1919	18	29
1920	8	17.5
1921	27	17.5

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

First to last qualifying date each year at Kennett Square
Year	First date	Last date
1894	1894-05-02	1894-09-16
1895	1895-05-09	1895-09-26
1896	1896-04-16	1896-09-19
1897	1897-04-25	1897-10-16
1898	1898-05-20	1898-09-19
1899	1899-05-02	1899-09-08
1900	1900-05-13	1900-10-06
1901	1901-06-06	1901-09-15
1902	1902-04-23	1902-09-01
1903	1903-04-30	1903-08-23
1904	1904-05-25	1904-07-31
1908	1908-05-28	1908-08-15
1909	1909-05-15	1909-07-31
1910	1910-06-21	1910-09-06
1911	1911-05-11	1911-09-25
1912	1912-05-21	1912-09-11
1913	1913-05-03	1913-09-05
1914	1914-05-26	1914-09-23
1915	1915-06-14	1915-09-17
1916	1916-05-28	1916-09-08
1919	1919-05-05	1919-09-08
1920	1920-06-11	1920-08-17
1921	1921-05-22	1921-09-03

Every Fixed Threshold

Fixed thresholds at Kennett Square
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	23	67	1900	27
35 C (95 F): Days	12	13	1900	2
90 F (32.2 C): Days	23	37	1900	12
100 F (37.8 C): Days	3	2	1901	1
0 C (32 F): Ice days (max	23	43	1904	12
0 C (32 F): Frost days (min	23	136	1904	99
-10 C (14 F): Days with min	23	37	1904	10
-20 C (-4 F): Days with min	5	6	1899	2
20 C (68 F): Tropical nights (min	23	42	1900	27
25 C (77 F): Days with min	2	1	1894	1
10 mm (0.39 in): Days with 10 mm or more rain	16	48	1903	43
25 mm (0.98 in): Days with 25 mm or more rain	16	19	1902	15
50 mm (1.97 in): Days with 50 mm or more rain	16	7	1912	4
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1911	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1894.

Download the Data

Data for Kennett Square 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).

Kennett Square Threshold Days by Year (USC00364533)

Key Facts for Kennett Square Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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