Salem Threshold Days by Year

16 fixed thresholds counted per year at Salem (USC00307405): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Salem Thresholds

Salem: days with a maximum temperature at or above 30 C (86 F) in 45 years, most in 1944 with 46.
Salem: days with a maximum temperature at or below 0 C (32 F) in 45 years, most in 1978 with 65.
Salem: nights with a minimum temperature at or below 0 C (32 F) in 45 years, most in 1967 with 194.
Salem: nights with a minimum temperature at or below -10 C (14 F) in 45 years, most in 1978 with 88.
16 fixed thresholds have at least one qualifying day at Salem.

Days at or above 30 C (86 F)

45 years with a qualifying day

Days per year at Salem with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 46 in 1944.

Days at or above 30 C (86 F) per year at Salem
Year	Days	Decade average
1943	33	32
1944	46	32
1945	29	32
1946	13	32
1947	36	32
1948	22	32
1949	45	32
1950	9	21.9
1951	13	21.9
1952	28	21.9
1953	32	21.9
1954	12	21.9
1955	40	21.9
1956	11	21.9
1957	18	21.9
1958	10	21.9
1959	46	21.9
1960	7	20.3
1961	25	20.3
1962	13	20.3
1963	19	20.3
1964	27	20.3
1965	26	20.3
1966	30	20.3
1967	14	20.3
1968	25	20.3
1969	17	20.3
1970	27	21.8
1971	21	21.8
1972	17	21.8
1973	27	21.8
1974	15	21.8
1976	18	21.8
1977	24	21.8
1978	23	21.8
1979	24	21.8
1980	15	17.7
1981	27	17.7
1986	11	17.7
1990	24	22.2
1991	32	22.2
1993	25	22.2
1994	15	22.2
1995	31	22.2
1996	6	22.2

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

First to last qualifying date each year at Salem
Year	First date	Last date
1943	1943-06-03	1943-09-07
1944	1944-05-04	1944-09-04
1945	1945-04-12	1945-09-10
1946	1946-06-25	1946-09-20
1947	1947-05-20	1947-09-14
1948	1948-06-25	1948-09-19
1949	1949-06-13	1949-10-12
1950	1950-06-09	1950-08-28
1951	1951-05-16	1951-09-01
1952	1952-06-16	1952-09-14
1953	1953-05-12	1953-09-06
1954	1954-06-02	1954-09-06
1955	1955-06-18	1955-08-23
1956	1956-06-13	1956-09-03
1957	1957-06-16	1957-09-23
1958	1958-07-01	1958-09-01
1959	1959-05-22	1959-09-25
1960	1960-06-18	1960-08-30
1961	1961-05-16	1961-09-25
1962	1962-04-28	1962-09-02
1963	1963-06-25	1963-08-08
1964	1964-05-24	1964-08-31
1965	1965-05-27	1965-09-23
1966	1966-06-06	1966-09-11
1967	1967-06-04	1967-07-12
1968	1968-06-07	1968-09-22
1969	1969-06-03	1969-09-02
1970	1970-05-11	1970-09-26
1971	1971-05-20	1971-09-07
1972	1972-06-16	1972-08-27
1973	1973-06-07	1973-09-06
1974	1974-06-10	1974-08-24
1976	1976-04-18	1976-08-23
1977	1977-05-18	1977-09-03
1978	1978-05-27	1978-08-19
1979	1979-05-09	1979-10-23
1980	1980-06-15	1980-09-02
1981	1981-05-25	1981-09-06
1986	1986-05-18	1986-07-29
1990	1990-04-27	1990-08-27
1991	1991-05-12	1991-09-17
1993	1993-05-11	1993-09-14
1994	1994-05-22	1994-08-04
1995	1995-06-01	1995-08-21
1996	1996-05-20	1996-08-21

Every Fixed Threshold

Fixed thresholds at Salem
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	45	46	1944	6
35 C (95 F): Days	17	8	1953	1
90 F (32.2 C): Days	41	23	1944	10
100 F (37.8 C): Days	1	1	1953	1
0 C (32 F): Ice days (max	45	65	1978	45
0 C (32 F): Frost days (min	45	194	1967	152
-10 C (14 F): Days with min	45	88	1978	59
-20 C (-4 F): Days with min	45	40	1963	12
-30 C (-22 F): Days with min	31	15	1948	1
20 C (68 F): Tropical nights (min	37	10	1959	3
10 mm (0.39 in): Days with 10 mm or more rain	44	55	1951	20
25 mm (0.98 in): Days with 25 mm or more rain	44	13	1950	9
50 mm (1.97 in): Days with 50 mm or more rain	19	4	1948	1
100 mm (3.94 in): Days with 100 mm or more rain	1	0	n/a	1
10 cm (3.9 in): Days with 10 cm or more snowfall	22	8	1969	5
25 cm (9.8 in): Days with 25 cm or more snowfall	5	1	1966	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1943.

Download the Data

Data for Salem 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).

Salem Threshold Days by Year

Key Facts for Salem Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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