Eureka 1E Threshold Days by Year (USC00142622)

21 fixed thresholds counted per year at Eureka 1E (USC00142622): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Eureka 1E Thresholds

Eureka 1E: days with 10 mm (0.39 in) or more of precipitation in 103 years, most in 1985 with 45.
Eureka 1E: days with 25 mm (0.98 in) or more of precipitation in 103 years, most in 2008 with 19.
Eureka 1E: nights with a minimum temperature at or below 0 C (32 F) in 98 years, most in 2018 with 136.
Eureka 1E: nights with a minimum temperature at or below -10 C (14 F) in 98 years, most in 1978 with 45.
21 fixed thresholds have at least one qualifying day at Eureka 1E.

Days at or above 30 C (86 F)

95 years with a qualifying day

Days per year at Eureka 1E with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 135 in 1956.

Days at or above 30 C (86 F) per year at Eureka 1E
Year	Days	Decade average
1909	102	102
1910	99	86.2
1912	68	86.2
1913	106	86.2
1915	59	86.2
1916	99	86.2
1921	103	86.6
1923	88	86.6
1925	110	86.6
1926	85	86.6
1927	70	86.6
1928	79	86.6
1929	71	86.6
1930	89	93.4
1931	105	93.4
1932	94	93.4
1933	97	93.4
1934	100	93.4
1935	80	93.4
1936	95	93.4
1938	81	93.4
1939	100	93.4
1940	93	80.2
1941	78	80.2
1942	70	80.2
1943	77	80.2
1944	83	80.2
1955	111	102
1956	135	102
1957	81	102
1958	88	102
1959	95	102
1960	96	93.4
1961	77	93.4
1962	109	93.4
1963	128	93.4
1964	98	93.4
1965	90	93.4
1966	90	93.4
1967	79	93.4
1968	89	93.4
1969	78	93.4
1970	102	92.9
1971	93	92.9
1972	95	92.9
1973	91	92.9
1974	72	92.9
1975	94	92.9
1976	83	92.9
1977	93	92.9
1978	112	92.9
1979	94	92.9
1980	123	92.6
1981	102	92.6
1982	85	92.6
1985	83	92.6
1986	87	92.6
1987	86	92.6
1988	97	92.6
1989	78	92.6
1990	95	83.9
1991	105	83.9
1992	52	83.9
1993	73	83.9
1994	95	83.9
1995	85	83.9
1996	84	83.9
1997	75	83.9
1998	102	83.9
1999	73	83.9
2000	96	74.5
2001	71	74.5
2002	89	74.5
2003	67	74.5
2004	61	74.5
2005	84	74.5
2006	98	74.5
2007	74	74.5
2008	50	74.5
2009	55	74.5
2010	86	83.3
2011	99	83.3
2012	104	83.3
2014	71	83.3
2015	73	83.3
2016	83	83.3
2017	76	83.3
2018	79	83.3
2019	79	83.3
2020	81	92.5
2022	107	92.5
2023	106	92.5
2024	92	92.5
2025	72	92.5
2026	97	92.5

For each year, a bar from the first to the last day at Eureka 1E meeting 30 C (86 F).

First to last qualifying date each year at Eureka 1E
Year	First date	Last date
1909	1909-04-04	1909-10-17
1910	1910-03-05	1910-10-16
1912	1912-05-02	1912-10-09
1913	1913-05-13	1913-09-10
1915	1915-04-27	1915-10-22
1916	1916-03-21	1916-10-08
1921	1921-03-19	1921-10-17
1923	1923-05-11	1923-09-28
1925	1925-04-12	1925-10-03
1926	1926-05-16	1926-09-22
1927	1927-04-10	1927-10-27
1928	1928-03-25	1928-10-12
1929	1929-04-04	1929-10-17
1930	1930-04-06	1930-10-09
1931	1931-05-15	1931-10-10
1932	1932-04-13	1932-10-18
1933	1933-04-18	1933-09-30
1934	1934-04-10	1934-09-25
1935	1935-05-01	1935-10-16
1936	1936-04-12	1936-10-18
1938	1938-03-21	1938-10-25
1939	1939-04-23	1939-09-28
1940	1940-03-31	1940-10-25
1941	1941-05-14	1941-10-13
1942	1942-04-04	1942-09-18
1943	1943-04-22	1943-09-22
1944	1944-05-13	1944-10-14
1955	1955-03-10	1955-10-20
1956	1956-04-26	1956-10-12
1957	1957-06-05	1957-09-05
1958	1958-04-23	1958-10-20
1959	1959-03-24	1959-09-27
1960	1960-05-16	1960-10-11
1961	1961-04-19	1961-10-12
1962	1962-02-12	1962-10-15
1963	1963-03-28	1963-10-22
1964	1964-04-16	1964-09-19
1965	1965-04-20	1965-10-10
1966	1966-03-31	1966-10-03
1967	1967-03-10	1967-10-04
1968	1968-03-29	1968-10-30
1969	1969-05-28	1969-10-03
1970	1970-04-27	1970-09-21
1971	1971-04-12	1971-10-12
1972	1972-04-11	1972-10-12
1973	1973-05-18	1973-10-08
1974	1974-03-31	1974-09-12
1975	1975-05-18	1975-10-21
1976	1976-04-02	1976-10-12
1977	1977-04-07	1977-10-27
1978	1978-05-11	1978-10-22
1979	1979-04-16	1979-10-21
1980	1980-04-20	1980-10-10
1981	1981-04-02	1981-10-05
1982	1982-04-12	1982-10-05
1985	1985-04-18	1985-09-19
1986	1986-04-24	1986-09-28
1987	1987-04-17	1987-09-25
1988	1988-05-11	1988-10-17
1989	1989-03-10	1989-10-14
1990	1990-05-25	1990-10-05
1991	1991-05-12	1991-10-23
1992	1992-04-14	1992-10-13
1993	1993-06-13	1993-09-23
1994	1994-04-18	1994-10-06
1995	1995-03-22	1995-10-16
1996	1996-04-12	1996-09-12
1997	1997-05-18	1997-10-07
1998	1998-04-26	1998-09-30
1999	1999-04-21	1999-09-25
2000	2000-04-06	2000-10-04
2001	2001-05-15	2001-09-06
2002	2002-04-15	2002-10-03
2003	2003-04-15	2003-10-21
2004	2004-05-07	2004-10-01
2005	2005-05-11	2005-10-19
2006	2006-04-14	2006-11-09
2007	2007-05-13	2007-10-08
2008	2008-05-02	2008-09-29
2009	2009-04-24	2009-09-28
2010	2010-05-24	2010-10-10
2011	2011-04-04	2011-10-05
2012	2012-04-02	2012-11-03
2014	2014-05-04	2014-10-27
2015	2015-04-08	2015-10-12
2016	2016-05-30	2016-10-18
2017	2017-03-20	2017-10-15
2018	2018-05-08	2018-10-04
2019	2019-04-11	2019-10-03
2020	2020-04-09	2020-10-15
2022	2022-05-10	2022-10-22
2023	2023-04-04	2023-10-24
2024	2024-04-15	2024-10-29
2025	2025-04-14	2025-10-13
2026	2026-03-21	2026-09-20

Every Fixed Threshold

Fixed thresholds at Eureka 1E
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	95	135	1956	97
35 C (95 F): Days	95	84	1980	38
40 C (104 F): Days	45	39	1936	2
45 C (113 F): Days	1	5	1936	5
90 F (32.2 C): Days	95	114	1956	67
100 F (37.8 C): Days	81	56	1980	19
110 F (43.3 C): Days	8	16	1936	2
120 F (48.9 C): Days	1	1	1936	1
0 C (32 F): Ice days (max	94	42	1978	10
0 C (32 F): Frost days (min	98	136	2018	56
-10 C (14 F): Days with min	98	45	1978	14
-20 C (-4 F): Days with min	55	12	1979	2
-30 C (-22 F): Days with min	1	1	1943	1
20 C (68 F): Tropical nights (min	98	86	1980	61
25 C (77 F): Days with min	55	29	1980	2
10 mm (0.39 in): Days with 10 mm or more rain	103	45	1985	28
25 mm (0.98 in): Days with 25 mm or more rain	103	19	2008	4
50 mm (1.97 in): Days with 50 mm or more rain	92	9	1961	2
100 mm (3.94 in): Days with 100 mm or more rain	16	3	1961	1
10 cm (3.9 in): Days with 10 cm or more snowfall	42	7	2003	2
25 cm (9.8 in): Days with 25 cm or more snowfall	3	1	1971	1

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 Eureka 1E 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).

Eureka 1E Threshold Days by Year (USC00142622)

Key Facts for Eureka 1E Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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