Bliss 4 NW Threshold Days by Year

17 fixed thresholds counted per year at Bliss 4 NW (USC00101002): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Bliss 4 NW Thresholds

Bliss 4 NW: days with 10 mm (0.39 in) or more of precipitation in 76 years, most in 1968 with 12.
Bliss 4 NW: nights with a minimum temperature at or below 0 C (32 F) in 75 years, most in 1895 with 189.
Bliss 4 NW: nights with a minimum temperature at or below -10 C (14 F) in 75 years, most in 1985 with 71.
Bliss 4 NW: days with a maximum temperature at or above 30 C (86 F) in 67 years, most in 1949 with 112.
17 fixed thresholds have at least one qualifying day at Bliss 4 NW.

Days at or above 30 C (86 F)

67 years with a qualifying day

Days per year at Bliss 4 NW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 112 in 1949.

Days at or above 30 C (86 F) per year at Bliss 4 NW
Year	Days	Decade average
1895	65	65
1920	79	82.6
1921	80	82.6
1923	87	82.6
1925	77	82.6
1926	83	82.6
1927	92	82.6
1929	80	82.6
1931	84	83.5
1935	87	83.5
1938	76	83.5
1939	87	83.5
1940	94	83.9
1941	63	83.9
1942	77	83.9
1943	85	83.9
1944	78	83.9
1945	79	83.9
1946	79	83.9
1947	92	83.9
1948	80	83.9
1949	112	83.9
1950	72	76.4
1951	70	76.4
1952	81	76.4
1953	70	76.4
1954	76	76.4
1955	73	76.4
1956	82	76.4
1957	80	76.4
1958	90	76.4
1959	70	76.4
1960	87	76.6
1961	85	76.6
1962	72	76.6
1963	75	76.6
1964	70	76.6
1965	53	76.6
1966	92	76.6
1967	89	76.6
1968	64	76.6
1969	79	76.6
1970	79	70.6
1971	66	70.6
1972	78	70.6
1973	73	70.6
1974	80	70.6
1975	60	70.6
1976	56	70.6
1977	74	70.6
1978	61	70.6
1979	79	70.6
1980	63	74
1981	85	74
1982	56	74
1983	66	74
1985	66	74
1986	75	74
1987	87	74
1988	92	74
1989	76	74
1990	78	73
1991	67	73
1992	81	73
1993	47	73
1994	90	73
1995	75	73

For each year, a bar from the first to the last day at Bliss 4 NW meeting 30 C (86 F).

First to last qualifying date each year at Bliss 4 NW
Year	First date	Last date
1895	1895-05-18	1895-09-30
1920	1920-05-27	1920-10-05
1921	1921-06-06	1921-10-04
1923	1923-05-08	1923-09-20
1925	1925-05-18	1925-09-25
1926	1926-04-29	1926-09-11
1927	1927-04-26	1927-10-16
1929	1929-05-20	1929-09-18
1931	1931-05-13	1931-09-27
1935	1935-05-22	1935-10-02
1938	1938-05-26	1938-09-28
1939	1939-04-28	1939-09-24
1940	1940-05-10	1940-09-11
1941	1941-05-11	1941-09-17
1942	1942-05-21	1942-10-09
1943	1943-04-19	1943-10-03
1944	1944-05-14	1944-10-08
1945	1945-05-03	1945-10-03
1946	1946-04-25	1946-09-26
1947	1947-05-02	1947-09-27
1948	1948-05-17	1948-09-15
1949	1949-04-27	1949-09-28
1950	1950-05-13	1950-09-07
1951	1951-05-27	1951-09-20
1952	1952-04-27	1952-09-26
1953	1953-06-10	1953-10-09
1954	1954-05-08	1954-09-26
1955	1955-06-07	1955-10-03
1956	1956-05-17	1956-09-26
1957	1957-06-02	1957-09-30
1958	1958-05-05	1958-10-14
1959	1959-05-12	1959-09-12
1960	1960-05-10	1960-10-04
1961	1961-05-09	1961-09-16
1962	1962-04-18	1962-09-26
1963	1963-05-29	1963-10-08
1964	1964-05-16	1964-10-13
1965	1965-06-06	1965-10-08
1966	1966-05-02	1966-09-24
1967	1967-05-17	1967-09-29
1968	1968-05-28	1968-09-13
1969	1969-04-22	1969-09-28
1970	1970-05-16	1970-10-03
1971	1971-05-26	1971-09-12
1972	1972-05-14	1972-09-08
1973	1973-05-15	1973-09-13
1974	1974-05-26	1974-09-24
1975	1975-05-14	1975-10-02
1976	1976-05-13	1976-09-11
1977	1977-04-23	1977-09-11
1978	1978-06-07	1978-09-27
1979	1979-05-15	1979-10-07
1980	1980-04-20	1980-09-27
1981	1981-05-01	1981-09-19
1982	1982-06-11	1982-09-09
1983	1983-05-24	1983-09-13
1985	1985-04-15	1985-08-28
1986	1986-05-19	1986-09-07
1987	1987-04-26	1987-10-03
1988	1988-04-12	1988-10-04
1989	1989-05-06	1989-09-30
1990	1990-04-15	1990-09-25
1991	1991-06-09	1991-09-07
1992	1992-04-26	1992-09-27
1993	1993-05-11	1993-10-04
1994	1994-04-18	1994-09-25
1995	1995-06-12	1995-09-18

Every Fixed Threshold

Fixed thresholds at Bliss 4 NW
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	67	112	1949	75
35 C (95 F): Days	67	56	1940	24
40 C (104 F): Days	28	8	1920	1
90 F (32.2 C): Days	67	88	1949	58
100 F (37.8 C): Days	60	27	1920	2
0 C (32 F): Ice days (max	67	72	1985	3
0 C (32 F): Frost days (min	75	189	1895	132
-10 C (14 F): Days with min	75	71	1985	14
-20 C (-4 F): Days with min	43	22	1949	3
-30 C (-22 F): Days with min	5	1	1949	1
20 C (68 F): Tropical nights (min	48	6	1920	1
25 C (77 F): Days with min	2	4	1943	4
10 mm (0.39 in): Days with 10 mm or more rain	76	12	1968	9
25 mm (0.98 in): Days with 25 mm or more rain	18	3	1953	1
50 mm (1.97 in): Days with 50 mm or more rain	1	1	1983	1
10 cm (3.9 in): Days with 10 cm or more snowfall	42	6	1951	4
25 cm (9.8 in): Days with 25 cm or more snowfall	2	1	1935	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1895.

Download the Data

Data for Bliss 4 NW 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Bliss 4 NW Threshold Days by Year

Key Facts for Bliss 4 NW Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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