Johnstown Threshold Days by Year (USC00364385)

17 fixed thresholds counted per year at Johnstown (USC00364385): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Johnstown Thresholds

Johnstown: days with 10 mm (0.39 in) or more of precipitation in 96 years, most in 1971 with 56.
Johnstown: days with 25 mm (0.98 in) or more of precipitation in 96 years, most in 1980 with 19.
Johnstown: days with a maximum temperature at or above 30 C (86 F) in 89 years, most in 1908 with 78.
Johnstown: days with a maximum temperature at or above 90 F (32.2 C) in 89 years, most in 1908 with 51.
17 fixed thresholds have at least one qualifying day at Johnstown.

Days at or above 30 C (86 F)

89 years with a qualifying day

Days per year at Johnstown with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 78 in 1908.

Days at or above 30 C (86 F) per year at Johnstown
Year	Days	Decade average
1894	64	54.3
1897	32	54.3
1898	55	54.3
1899	66	54.3
1900	71	56
1901	59	56
1902	51	56
1903	45	56
1904	45	56
1906	58	56
1907	41	56
1908	78	56
1911	72	52.2
1912	36	52.2
1913	58	52.2
1914	67	52.2
1915	40	52.2
1916	52	52.2
1917	37	52.2
1918	47	52.2
1919	61	52.2
1920	40	47.6
1921	65	47.6
1922	59	47.6
1923	55	47.6
1924	34	47.6
1925	60	47.6
1926	47	47.6
1927	39	47.6
1928	29	47.6
1930	74	64.6
1931	70	64.6
1932	71	64.6
1933	57	64.6
1934	67	64.6
1935	53	64.6
1937	61	64.6
1938	60	64.6
1939	68	64.6
1940	20	40.5
1941	39	40.5
1942	25	40.5
1943	29	40.5
1944	32	40.5
1945	50	40.5
1946	46	40.5
1947	58	40.5
1948	48	40.5
1949	58	40.5
1950	33	54.8
1951	60	54.8
1952	56	54.8
1953	66	54.8
1954	52	54.8
1955	67	54.8
1956	50	54.8
1957	58	54.8
1958	40	54.8
1959	66	54.8
1960	42	47.5
1961	25	47.5
1962	45	47.5
1963	39	47.5
1964	56	47.5
1965	61	47.5
1966	62	47.5
1967	38	47.5
1968	56	47.5
1969	51	47.5
1970	53	46.3
1971	55	46.3
1972	35	46.3
1973	46	46.3
1974	43	46.3
1975	51	46.3
1976	41	46.3
1978	54	46.3
1979	39	46.3
1980	42	53.4
1981	39	53.4
1982	48	53.4
1983	56	53.4
1984	48	53.4
1985	48	53.4
1986	56	53.4
1987	74	53.4
1988	67	53.4
1989	56	53.4
1990	51	51

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

First to last qualifying date each year at Johnstown
Year	First date	Last date
1894	1894-05-01	1894-09-15
1897	1897-06-15	1897-10-16
1898	1898-05-19	1898-09-06
1899	1899-04-23	1899-10-15
1900	1900-05-08	1900-10-07
1901	1901-04-29	1901-09-08
1902	1902-04-22	1902-09-23
1903	1903-04-03	1903-10-04
1904	1904-05-13	1904-09-29
1906	1906-05-17	1906-09-20
1907	1907-03-23	1907-09-20
1908	1908-04-24	1908-09-26
1911	1911-05-12	1911-09-24
1912	1912-05-20	1912-10-11
1913	1913-04-24	1913-09-07
1914	1914-04-18	1914-10-10
1915	1915-04-24	1915-09-18
1916	1916-04-20	1916-10-08
1917	1917-05-18	1917-09-02
1918	1918-05-06	1918-08-25
1919	1919-05-04	1919-10-04
1920	1920-05-27	1920-09-27
1921	1921-04-04	1921-09-15
1922	1922-04-10	1922-10-05
1923	1923-05-27	1923-10-13
1924	1924-05-06	1924-09-12
1925	1925-04-24	1925-09-20
1926	1926-05-01	1926-10-04
1927	1927-05-09	1927-10-02
1928	1928-04-05	1928-10-12
1930	1930-04-11	1930-09-26
1931	1931-05-27	1931-10-07
1932	1932-05-07	1932-09-22
1933	1933-04-29	1933-09-25
1934	1934-05-04	1934-09-26
1935	1935-04-27	1935-10-14
1937	1937-05-12	1937-10-06
1938	1938-04-27	1938-10-18
1939	1939-05-07	1939-10-10
1940	1940-06-04	1940-08-13
1941	1941-04-19	1941-10-07
1942	1942-04-26	1942-09-19
1943	1943-06-03	1943-09-06
1944	1944-05-30	1944-09-04
1945	1945-05-18	1945-09-29
1946	1946-04-23	1946-10-08
1947	1947-05-24	1947-10-23
1948	1948-04-27	1948-09-18
1949	1949-05-05	1949-10-12
1950	1950-05-05	1950-09-12
1951	1951-05-16	1951-10-06
1952	1952-04-23	1952-09-15
1953	1953-05-05	1953-10-01
1954	1954-04-20	1954-10-13
1955	1955-05-05	1955-10-08
1956	1956-04-29	1956-09-06
1957	1957-05-14	1957-09-23
1958	1958-04-20	1958-09-27
1959	1959-05-07	1959-10-07
1960	1960-04-25	1960-09-10
1961	1961-05-15	1961-09-26
1962	1962-04-27	1962-10-16
1963	1963-05-09	1963-10-25
1964	1964-05-20	1964-09-18
1965	1965-05-03	1965-09-23
1966	1966-05-28	1966-09-03
1967	1967-04-15	1967-09-19
1968	1968-06-06	1968-09-23
1969	1969-04-18	1969-10-14
1970	1970-05-01	1970-10-08
1971	1971-05-19	1971-09-16
1972	1972-05-25	1972-09-18
1973	1973-06-05	1973-09-06
1974	1974-04-29	1974-09-13
1975	1975-05-19	1975-08-28
1976	1976-04-17	1976-09-15
1978	1978-05-21	1978-09-19
1979	1979-05-08	1979-10-22
1980	1980-06-02	1980-09-22
1981	1981-05-24	1981-09-14
1982	1982-05-06	1982-09-12
1983	1983-05-07	1983-09-20
1984	1984-04-27	1984-09-22
1985	1985-04-19	1985-09-20
1986	1986-04-27	1986-09-30
1987	1987-04-21	1987-08-21
1988	1988-05-23	1988-09-03
1989	1989-03-27	1989-09-21
1990	1990-04-25	1990-09-11

Every Fixed Threshold

Fixed thresholds at Johnstown
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	89	78	1908	51
35 C (95 F): Days	75	30	1988	2
40 C (104 F): Days	1	1	1953	1
90 F (32.2 C): Days	89	51	1908	17
100 F (37.8 C): Days	14	6	1930	4
0 C (32 F): Ice days (max	89	51	1963	5
0 C (32 F): Frost days (min	89	155	1980	103
-10 C (14 F): Days with min	89	46	1963	14
-20 C (-4 F): Days with min	42	8	1904	2
20 C (68 F): Tropical nights (min	87	29	1949	6
25 C (77 F): Days with min	5	2	1935	1
10 mm (0.39 in): Days with 10 mm or more rain	96	56	1971	28
25 mm (0.98 in): Days with 25 mm or more rain	96	19	1980	4
50 mm (1.97 in): Days with 50 mm or more rain	54	4	1980	1
100 mm (3.94 in): Days with 100 mm or more rain	3	1	1912	1
10 cm (3.9 in): Days with 10 cm or more snowfall	56	7	1961	5
25 cm (9.8 in): Days with 25 cm or more snowfall	14	2	1944	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 Johnstown 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).

Johnstown Threshold Days by Year (USC00364385)

Key Facts for Johnstown Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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