Seymour 3NW Threshold Days by Year (USC00418221)

19 fixed thresholds counted per year at Seymour 3NW (USC00418221): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Seymour 3NW Thresholds

Seymour 3NW: days with 10 mm (0.39 in) or more of precipitation in 102 years, most in 2004 with 37.
Seymour 3NW: days with 25 mm (0.98 in) or more of precipitation in 102 years, most in 1962 with 14.
Seymour 3NW: days with 50 mm (1.97 in) or more of precipitation in 82 years, most in 1914 with 5.
Seymour 3NW: nights with a minimum temperature at or below 0 C (32 F) in 74 years, most in 1937 with 104.
19 fixed thresholds have at least one qualifying day at Seymour 3NW.

Days at or above 30 C (86 F)

72 years with a qualifying day

Days per year at Seymour 3NW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 176 in 1939.

Days at or above 30 C (86 F) per year at Seymour 3NW
Year	Days	Decade average
1909	151	151
1910	151	140.7
1912	145	140.7
1914	126	140.7
1926	130	142.3
1927	150	142.3
1928	150	142.3
1929	139	142.3
1930	140	150.8
1931	141	150.8
1932	132	150.8
1933	151	150.8
1934	167	150.8
1935	135	150.8
1936	152	150.8
1937	163	150.8
1939	176	150.8
1942	130	133.8
1944	125	133.8
1946	140	133.8
1949	140	133.8
1950	137	149
1951	155	149
1952	149	149
1953	147	149
1954	167	149
1955	162	149
1956	165	149
1957	122	149
1959	137	149
1960	143	136.7
1961	125	136.7
1962	153	136.7
1963	167	136.7
1964	137	136.7
1965	131	136.7
1966	120	136.7
1967	136	136.7
1968	132	136.7
1969	123	136.7
1970	115	125.7
1971	132	125.7
1972	137	125.7
1973	119	125.7
1974	123	125.7
1975	116	125.7
1976	112	125.7
1977	136	125.7
1978	139	125.7
1979	128	125.7
1980	139	129
1981	120	129
1982	124	129
1983	118	129
1984	142	129
1985	122	129
1986	128	129
1987	122	129
1988	136	129
1989	139	129
1990	122	127.1
1991	131	127.1
1993	122	127.1
1994	135	127.1
1995	122	127.1
1996	130	127.1
1997	122	127.1
1999	133	127.1
2001	119	131
2003	140	131
2004	126	131
2005	139	131

For each year, a bar from the first to the last day at Seymour 3NW meeting 30 C (86 F).

First to last qualifying date each year at Seymour 3NW
Year	First date	Last date
1909	1909-03-18	1909-11-05
1910	1910-01-25	1910-10-26
1912	1912-03-18	1912-11-05
1914	1914-03-26	1914-10-31
1926	1926-03-19	1926-10-27
1927	1927-03-18	1927-10-26
1928	1928-03-12	1928-10-24
1929	1929-03-06	1929-10-10
1930	1930-02-23	1930-10-10
1931	1931-03-12	1931-10-25
1932	1932-02-09	1932-10-23
1933	1933-03-17	1933-11-12
1934	1934-03-06	1934-11-09
1935	1935-03-19	1935-10-31
1936	1936-03-14	1936-10-20
1937	1937-04-02	1937-11-01
1939	1939-03-10	1939-11-07
1942	1942-03-15	1942-10-12
1944	1944-04-09	1944-11-01
1946	1946-03-25	1946-10-30
1949	1949-04-08	1949-11-20
1950	1950-01-25	1950-11-20
1951	1951-02-13	1951-12-31
1952	1952-03-31	1952-11-02
1953	1953-03-21	1953-10-17
1954	1954-02-15	1954-12-05
1955	1955-03-01	1955-12-25
1956	1956-02-24	1956-10-15
1957	1957-02-10	1957-10-08
1959	1959-02-18	1959-10-26
1960	1960-04-01	1960-10-14
1961	1961-03-16	1961-10-30
1962	1962-02-12	1962-10-23
1963	1963-03-25	1963-11-08
1964	1964-03-14	1964-10-31
1965	1965-04-04	1965-11-26
1966	1966-03-18	1966-09-30
1967	1967-01-22	1967-10-15
1968	1968-04-17	1968-11-02
1969	1969-01-09	1969-11-11
1970	1970-04-16	1970-10-23
1971	1971-03-14	1971-10-16
1972	1972-02-29	1972-10-18
1973	1973-05-10	1973-11-02
1974	1974-03-02	1974-10-11
1975	1975-03-21	1975-11-30
1976	1976-02-10	1976-10-04
1977	1977-03-15	1977-10-30
1978	1978-03-18	1978-10-22
1979	1979-02-15	1979-10-22
1980	1980-04-07	1980-11-09
1981	1981-04-09	1981-11-19
1982	1982-02-24	1982-11-01
1983	1983-04-28	1983-10-17
1984	1984-04-12	1984-10-19
1985	1985-04-18	1985-10-13
1986	1986-02-20	1986-10-04
1987	1987-04-12	1987-11-05
1988	1988-03-11	1988-11-10
1989	1989-03-12	1989-11-15
1990	1990-04-16	1990-10-21
1991	1991-03-06	1991-10-25
1993	1993-04-11	1993-10-17
1994	1994-03-18	1994-10-07
1995	1995-03-20	1995-10-27
1996	1996-02-22	1996-10-21
1997	1997-03-22	1997-10-10
1999	1999-03-03	1999-10-30
2001	2001-04-03	2001-11-04
2003	2003-02-03	2003-11-05
2004	2004-03-18	2004-10-23
2005	2005-03-13	2005-11-09

Every Fixed Threshold

Fixed thresholds at Seymour 3NW
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	72	176	1939	139
35 C (95 F): Days	72	126	1939	71
40 C (104 F): Days	68	47	1954	1
45 C (113 F): Days	10	4	1937	1
90 F (32.2 C): Days	72	153	1939	107
100 F (37.8 C): Days	72	85	1956	7
110 F (43.3 C): Days	32	15	1946	1
120 F (48.9 C): Days	1	1	1936	1
0 C (32 F): Ice days (max	67	18	1979	2
0 C (32 F): Frost days (min	74	104	1937	63
-10 C (14 F): Days with min	67	19	1912	2
-20 C (-4 F): Days with min	5	2	1966	2
20 C (68 F): Tropical nights (min	74	104	1914	74
25 C (77 F): Days with min	56	33	1952	8
10 mm (0.39 in): Days with 10 mm or more rain	102	37	2004	15
25 mm (0.98 in): Days with 25 mm or more rain	102	14	1962	4
50 mm (1.97 in): Days with 50 mm or more rain	82	5	1914	2
100 mm (3.94 in): Days with 100 mm or more rain	13	1	1953	1
10 cm (3.9 in): Days with 10 cm or more snowfall	14	2	1912	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1909.

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Data for Seymour 3NW 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Seymour 3NW Threshold Days by Year (USC00418221)

Key Facts for Seymour 3NW Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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