Gettysburg Threshold Days by Year (USC00363218)

18 fixed thresholds counted per year at Gettysburg (USC00363218): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Gettysburg Thresholds

Gettysburg: days with 10 mm (0.39 in) or more of precipitation in 79 years, most in 1937 with 50.
Gettysburg: days with 25 mm (0.98 in) or more of precipitation in 79 years, most in 1921 with 17.
Gettysburg: days with a maximum temperature at or above 30 C (86 F) in 78 years, most in 1925 with 80.
Gettysburg: days with a maximum temperature at or above 90 F (32.2 C) in 78 years, most in 1925 with 48.
18 fixed thresholds have at least one qualifying day at Gettysburg.

Days at or above 30 C (86 F)

78 years with a qualifying day

Days per year at Gettysburg with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 80 in 1925.

Days at or above 30 C (86 F) per year at Gettysburg
Year	Days	Decade average
1904	18	45
1905	45	45
1906	59	45
1907	41	45
1908	58	45
1909	49	45
1910	59	56.6
1911	70	56.6
1912	48	56.6
1913	61	56.6
1914	62	56.6
1915	58	56.6
1916	51	56.6
1917	48	56.6
1918	53	56.6
1919	56	56.6
1920	57	55.2
1921	73	55.2
1922	65	55.2
1923	57	55.2
1924	42	55.2
1925	80	55.2
1926	57	55.2
1927	29	55.2
1928	38	55.2
1929	54	55.2
1930	70	62.6
1931	63	62.6
1932	63	62.6
1933	67	62.6
1934	56	62.6
1935	56	62.6
1936	65	62.6
1937	54	62.6
1938	59	62.6
1939	73	62.6
1940	44	46.1
1941	68	46.1
1942	32	46.1
1943	70	46.1
1944	62	46.1
1945	34	46.1
1946	26	46.1
1947	32	46.1
1948	38	46.1
1949	55	46.1
1950	32	56.5
1951	54	56.5
1952	61	56.5
1953	69	56.5
1954	53	56.5
1955	60	56.5
1956	49	56.5
1957	69	56.5
1958	44	56.5
1959	74	56.5
1960	39	51.3
1961	56	51.3
1962	47	51.3
1963	48	51.3
1964	55	51.3
1965	60	51.3
1966	66	51.3
1967	35	51.3
1968	56	51.3
1969	51	51.3
1970	60	46.1
1971	39	46.1
1972	35	46.1
1973	49	46.1
1974	39	46.1
1975	46	46.1
1976	43	46.1
1977	61	46.1
1978	46	46.1
1979	43	46.1
1980	75	61.5
1981	48	61.5

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

First to last qualifying date each year at Gettysburg
Year	First date	Last date
1904	1904-05-06	1904-09-12
1905	1905-05-04	1905-09-19
1906	1906-05-17	1906-09-21
1907	1907-03-23	1907-09-21
1908	1908-04-24	1908-09-12
1909	1909-05-06	1909-08-28
1910	1910-04-30	1910-10-06
1911	1911-05-10	1911-09-25
1912	1912-05-20	1912-09-15
1913	1913-05-02	1913-09-08
1914	1914-05-11	1914-09-23
1915	1915-04-20	1915-09-17
1916	1916-05-25	1916-10-08
1917	1917-05-18	1917-09-02
1918	1918-05-05	1918-09-05
1919	1919-05-04	1919-10-11
1920	1920-04-22	1920-10-22
1921	1921-04-25	1921-09-29
1922	1922-04-09	1922-10-06
1923	1923-05-27	1923-09-04
1924	1924-05-06	1924-09-02
1925	1925-04-23	1925-09-20
1926	1926-05-02	1926-10-05
1927	1927-04-20	1927-10-02
1928	1928-05-04	1928-10-13
1929	1929-04-06	1929-09-29
1930	1930-05-01	1930-09-27
1931	1931-05-28	1931-10-07
1932	1932-05-07	1932-09-20
1933	1933-05-20	1933-09-27
1934	1934-05-05	1934-09-10
1935	1935-04-27	1935-09-21
1936	1936-05-08	1936-09-23
1937	1937-04-18	1937-09-04
1938	1938-04-20	1938-10-17
1939	1939-04-25	1939-10-10
1940	1940-05-07	1940-09-21
1941	1941-05-20	1941-10-08
1942	1942-04-06	1942-09-16
1943	1943-05-06	1943-09-07
1944	1944-05-04	1944-09-05
1945	1945-03-29	1945-09-29
1946	1946-04-23	1946-09-11
1947	1947-05-28	1947-10-23
1948	1948-05-11	1948-09-19
1949	1949-05-05	1949-10-11
1950	1950-05-07	1950-09-01
1951	1951-05-17	1951-10-06
1952	1952-06-05	1952-09-15
1953	1953-05-11	1953-10-01
1954	1954-05-03	1954-10-14
1955	1955-05-06	1955-09-17
1956	1956-04-29	1956-09-24
1957	1957-04-22	1957-09-23
1958	1958-06-01	1958-09-27
1959	1959-05-08	1959-10-07
1960	1960-04-15	1960-09-10
1961	1961-05-10	1961-09-26
1962	1962-04-27	1962-09-14
1963	1963-05-06	1963-10-08
1964	1964-05-10	1964-09-18
1965	1965-05-04	1965-09-24
1966	1966-06-05	1966-09-04
1967	1967-06-10	1967-08-19
1968	1968-06-07	1968-09-26
1969	1969-04-28	1969-09-18
1970	1970-05-10	1970-09-27
1971	1971-05-20	1971-09-11
1972	1972-04-20	1972-09-27
1973	1973-04-23	1973-09-06
1974	1974-04-30	1974-09-14
1975	1975-05-21	1975-08-29
1976	1976-04-18	1976-09-15
1977	1977-04-13	1977-09-20
1978	1978-05-21	1978-09-22
1979	1979-05-09	1979-10-23
1980	1980-05-06	1980-09-23
1981	1981-05-23	1981-09-15

Every Fixed Threshold

Fixed thresholds at Gettysburg
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	78	80	1925	48
35 C (95 F): Days	65	23	1930	3
40 C (104 F): Days	4	2	1918	1
90 F (32.2 C): Days	78	48	1925	16
100 F (37.8 C): Days	25	8	1930	2
0 C (32 F): Ice days (max	78	45	1904	21
0 C (32 F): Frost days (min	78	144	1926	102
-10 C (14 F): Days with min	78	40	1977	22
-20 C (-4 F): Days with min	26	5	1904	1
20 C (68 F): Tropical nights (min	78	42	1949	14
25 C (77 F): Days with min	13	4	1930	1
10 mm (0.39 in): Days with 10 mm or more rain	79	50	1937	31
25 mm (0.98 in): Days with 25 mm or more rain	79	17	1921	8
50 mm (1.97 in): Days with 50 mm or more rain	61	7	1975	1
100 mm (3.94 in): Days with 100 mm or more rain	7	1	1913	1
10 cm (3.9 in): Days with 10 cm or more snowfall	72	7	1961	1
25 cm (9.8 in): Days with 25 cm or more snowfall	19	2	1917	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	1942	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 Gettysburg 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).

Gettysburg Threshold Days by Year (USC00363218)

Key Facts for Gettysburg Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related