Hagerstown Threshold Days by Year (USC00183975)

18 fixed thresholds counted per year at Hagerstown (USC00183975): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Hagerstown Thresholds

Hagerstown: days with 10 mm (0.39 in) or more of precipitation in 46 years, most in 1979 with 46.
Hagerstown: days with 25 mm (0.98 in) or more of precipitation in 46 years, most in 1972 with 14.
Hagerstown: days with a maximum temperature at or above 30 C (86 F) in 43 years, most in 1900 with 100.
Hagerstown: days with a maximum temperature at or above 90 F (32.2 C) in 43 years, most in 1900 with 66.
18 fixed thresholds have at least one qualifying day at Hagerstown.

Days at or above 30 C (86 F)

43 years with a qualifying day

Days per year at Hagerstown with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 100 in 1900.

Days at or above 30 C (86 F) per year at Hagerstown
Year	Days	Decade average
1896	58	53
1897	48	53
1900	100	100
1948	42	51.5
1949	61	51.5
1950	34	58.9
1951	58	58.9
1952	59	58.9
1953	69	58.9
1954	53	58.9
1955	60	58.9
1956	54	58.9
1957	78	58.9
1958	43	58.9
1959	81	58.9
1960	45	58.6
1961	63	58.6
1962	59	58.6
1963	56	58.6
1964	72	58.6
1965	68	58.6
1966	72	58.6
1967	29	58.6
1968	62	58.6
1969	60	58.6
1970	65	45.6
1971	44	45.6
1972	39	45.6
1973	48	45.6
1974	39	45.6
1975	39	45.6
1976	41	45.6
1977	61	45.6
1978	45	45.6
1979	35	45.6
1980	62	55.4
1981	37	55.4
1982	50	55.4
1983	77	55.4
1984	44	55.4
1985	50	55.4
1986	68	55.4
1991	67	67

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

First to last qualifying date each year at Hagerstown
Year	First date	Last date
1896	1896-04-16	1896-09-19
1897	1897-04-25	1897-10-16
1900	1900-05-08	1900-10-07
1948	1948-03-21	1948-09-18
1949	1949-04-26	1949-10-11
1950	1950-06-07	1950-08-31
1951	1951-05-16	1951-10-05
1952	1952-06-04	1952-09-15
1953	1953-05-10	1953-09-30
1954	1954-04-21	1954-10-13
1955	1955-05-05	1955-09-15
1956	1956-04-28	1956-09-23
1957	1957-04-21	1957-09-22
1958	1958-04-19	1958-09-26
1959	1959-05-07	1959-10-07
1960	1960-04-14	1960-09-09
1961	1961-06-01	1961-09-26
1962	1962-04-26	1962-10-12
1963	1963-04-03	1963-10-07
1964	1964-05-09	1964-09-17
1965	1965-05-03	1965-09-23
1966	1966-06-04	1966-09-04
1967	1967-06-09	1967-10-05
1968	1968-06-06	1968-09-24
1969	1969-04-27	1969-09-17
1970	1970-05-09	1970-09-27
1971	1971-05-19	1971-09-10
1972	1972-04-19	1972-09-26
1973	1973-04-22	1973-09-05
1974	1974-04-29	1974-09-13
1975	1975-05-21	1975-08-27
1976	1976-04-16	1976-09-14
1977	1977-04-11	1977-09-19
1978	1978-05-26	1978-09-19
1979	1979-05-09	1979-09-06
1980	1980-05-05	1980-09-22
1981	1981-05-25	1981-09-14
1982	1982-05-07	1982-09-13
1983	1983-04-28	1983-09-21
1984	1984-05-22	1984-09-23
1985	1985-04-19	1985-09-11
1986	1986-03-30	1986-10-02
1991	1991-04-09	1991-09-19

Every Fixed Threshold

Fixed thresholds at Hagerstown
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	43	100	1900	67
35 C (95 F): Days	35	30	1900	15
40 C (104 F): Days	2	1	1900	1
90 F (32.2 C): Days	43	66	1900	37
100 F (37.8 C): Days	13	5	1900	3
0 C (32 F): Ice days (max	43	35	1977	7
0 C (32 F): Frost days (min	43	135	1960	99
-10 C (14 F): Days with min	43	41	1977	20
-20 C (-4 F): Days with min	13	3	1977	2
20 C (68 F): Tropical nights (min	42	39	1952	37
25 C (77 F): Days with min	4	2	1952	1
10 mm (0.39 in): Days with 10 mm or more rain	46	46	1979	23
25 mm (0.98 in): Days with 25 mm or more rain	46	14	1972	9
50 mm (1.97 in): Days with 50 mm or more rain	31	5	1975	2
100 mm (3.94 in): Days with 100 mm or more rain	4	1	1956	1
10 cm (3.9 in): Days with 10 cm or more snowfall	35	5	1960	1
25 cm (9.8 in): Days with 25 cm or more snowfall	12	2	1964	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	1983	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1896.

Download the Data

Data for Hagerstown 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).

Hagerstown Threshold Days by Year (USC00183975)

Key Facts for Hagerstown Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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