Duck Hill Threshold Days by Year (USC00222477)

16 fixed thresholds counted per year at Duck Hill (USC00222477): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Duck Hill Thresholds

Duck Hill: days with 10 mm (0.39 in) or more of precipitation in 44 years, most in 1932 with 61.
Duck Hill: days with 25 mm (0.98 in) or more of precipitation in 44 years, most in 1905 with 29.
Duck Hill: days with 50 mm (1.97 in) or more of precipitation in 43 years, most in 1919 with 10.
Duck Hill: days with a maximum temperature at or above 30 C (86 F) in 40 years, most in 1941 with 145.
16 fixed thresholds have at least one qualifying day at Duck Hill.

Days at or above 30 C (86 F)

40 years with a qualifying day

Days per year at Duck Hill with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 145 in 1941.

Days at or above 30 C (86 F) per year at Duck Hill
Year	Days	Decade average
1904	139	124.4
1905	110	124.4
1906	127	124.4
1907	117	124.4
1908	129	124.4
1910	134	122
1911	134	122
1912	108	122
1913	115	122
1914	131	122
1915	126	122
1916	120	122
1917	104	122
1918	133	122
1919	115	122
1920	110	122
1924	119	122
1925	129	122
1926	128	122
1927	132	122
1928	111	122
1929	125	122
1930	114	127.9
1931	140	127.9
1932	99	127.9
1933	126	127.9
1934	121	127.9
1935	132	127.9
1936	140	127.9
1937	140	127.9
1938	130	127.9
1939	137	127.9
1940	94	123.3
1941	145	123.3
1942	129	123.3
1943	129	123.3
1948	123	123.3
1949	120	123.3
1951	128	133
1952	138	133

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

First to last qualifying date each year at Duck Hill
Year	First date	Last date
1904	1904-05-02	1904-10-20
1905	1905-04-29	1905-10-19
1906	1906-04-10	1906-10-22
1907	1907-03-19	1907-10-26
1908	1908-03-17	1908-10-20
1910	1910-03-23	1910-10-19
1911	1911-03-09	1911-10-15
1912	1912-05-03	1912-10-11
1913	1913-04-19	1913-10-10
1914	1914-04-16	1914-11-06
1915	1915-04-17	1915-10-17
1916	1916-04-20	1916-10-16
1917	1917-04-28	1917-10-18
1918	1918-02-25	1918-10-08
1919	1919-04-23	1919-10-30
1920	1920-04-17	1920-10-22
1924	1924-04-16	1924-10-20
1925	1925-04-15	1925-10-12
1926	1926-05-09	1926-10-19
1927	1927-04-13	1927-11-01
1928	1928-05-02	1928-10-16
1929	1929-03-23	1929-10-19
1930	1930-04-22	1930-10-09
1931	1931-04-15	1931-11-13
1932	1932-04-06	1932-10-21
1933	1933-04-30	1933-10-14
1934	1934-05-08	1934-10-24
1935	1935-04-25	1935-11-04
1936	1936-04-13	1936-10-21
1937	1937-04-17	1937-10-31
1938	1938-04-29	1938-10-16
1939	1939-04-26	1939-10-27
1940	1940-05-06	1940-10-27
1941	1941-04-11	1941-10-23
1942	1942-04-29	1942-11-08
1943	1943-04-10	1943-10-20
1948	1948-04-07	1948-09-23
1949	1949-05-07	1949-10-21
1951	1951-04-27	1951-10-22
1952	1952-04-29	1952-10-05

Every Fixed Threshold

Fixed thresholds at Duck Hill
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	40	145	1941	138
35 C (95 F): Days	40	71	1924	66
40 C (104 F): Days	11	7	1925	5
90 F (32.2 C): Days	40	115	1952	115
100 F (37.8 C): Days	32	30	1930	18
0 C (32 F): Ice days (max	26	8	1917	5
0 C (32 F): Frost days (min	39	80	1904	68
-10 C (14 F): Days with min	26	10	1940	3
-20 C (-4 F): Days with min	2	1	1905	1
20 C (68 F): Tropical nights (min	39	99	1939	63
25 C (77 F): Days with min	25	21	1925	5
10 mm (0.39 in): Days with 10 mm or more rain	44	61	1932	30
25 mm (0.98 in): Days with 25 mm or more rain	44	29	1905	10
50 mm (1.97 in): Days with 50 mm or more rain	43	10	1919	2
100 mm (3.94 in): Days with 100 mm or more rain	13	2	1911	2
10 cm (3.9 in): Days with 10 cm or more snowfall	2	1	1948	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1904.

Download the Data

Data for Duck Hill 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).

Duck Hill Threshold Days by Year (USC00222477)

Key Facts for Duck Hill Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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