Union 3 SSE Threshold Days by Year (USC00469011)

16 fixed thresholds counted per year at Union 3 SSE (USC00469011): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Union 3 SSE Thresholds

Union 3 SSE: days with 10 mm (0.39 in) or more of precipitation in 96 years, most in 2003 with 50.
Union 3 SSE: days with 25 mm (0.98 in) or more of precipitation in 96 years, most in 2003 with 16.
Union 3 SSE: days with a maximum temperature at or above 30 C (86 F) in 80 years, most in 1919 with 71.
Union 3 SSE: days with a maximum temperature at or below 0 C (32 F) in 80 years, most in 1963 with 34.
16 fixed thresholds have at least one qualifying day at Union 3 SSE.

Days at or above 30 C (86 F)

80 years with a qualifying day

Days per year at Union 3 SSE with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 71 in 1919.

Days at or above 30 C (86 F) per year at Union 3 SSE
Year	Days	Decade average
1907	21	21.7
1908	27	21.7
1909	17	21.7
1910	21	40
1911	46	40
1912	30	40
1914	59	40
1915	21	40
1916	42	40
1917	30	40
1919	71	40
1920	33	34.5
1921	36	34.5
1938	28	46.5
1939	65	46.5
1941	66	41
1942	38	41
1943	65	41
1944	52	41
1945	41	41
1946	25	41
1947	19	41
1948	28	41
1949	35	41
1950	7	38.2
1951	48	38.2
1952	48	38.2
1953	60	38.2
1954	47	38.2
1955	44	38.2
1956	20	38.2
1957	47	38.2
1958	20	38.2
1959	41	38.2
1960	26	21.3
1961	21	21.3
1962	17	21.3
1963	11	21.3
1964	33	21.3
1965	19	21.3
1966	27	21.3
1967	8	21.3
1968	26	21.3
1969	25	21.3
1970	32	12.5
1971	7	12.5
1972	8	12.5
1974	3	12.5
1975	10	12.5
1976	13	12.5
1977	20	12.5
1979	7	12.5
1980	35	26.9
1981	18	26.9
1982	10	26.9
1983	44	26.9
1984	18	26.9
1985	18	26.9
1986	30	26.9
1987	40	26.9
1988	41	26.9
1989	15	26.9
1990	14	24.9
1991	36	24.9
1992	14	24.9
1993	40	24.9
1994	24	24.9
1995	30	24.9
1996	16	24.9
1997	19	24.9
1998	26	24.9
1999	30	24.9
2000	24	25.7
2001	19	25.7
2002	46	25.7
2003	19	25.7
2004	18	25.7
2005	33	25.7
2006	21	25.7
2011	42	42

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

First to last qualifying date each year at Union 3 SSE
Year	First date	Last date
1907	1907-06-22	1907-09-18
1908	1908-05-19	1908-08-19
1909	1909-06-09	1909-08-26
1910	1910-03-29	1910-09-08
1911	1911-05-12	1911-09-09
1912	1912-06-03	1912-09-16
1914	1914-05-26	1914-09-25
1915	1915-04-25	1915-09-19
1916	1916-05-15	1916-10-09
1917	1917-05-21	1917-09-03
1919	1919-04-09	1919-10-03
1920	1920-06-05	1920-10-24
1921	1921-04-25	1921-09-21
1938	1938-05-04	1938-10-19
1939	1939-05-18	1939-10-10
1941	1941-04-20	1941-10-08
1942	1942-04-26	1942-09-17
1943	1943-05-18	1943-09-09
1944	1944-06-01	1944-09-06
1945	1945-05-16	1945-09-29
1946	1946-06-09	1946-10-05
1947	1947-05-16	1947-09-21
1948	1948-05-11	1948-09-10
1949	1949-05-05	1949-08-28
1950	1950-06-25	1950-09-04
1951	1951-06-03	1951-10-08
1952	1952-06-07	1952-09-15
1953	1953-05-26	1953-10-02
1954	1954-05-03	1954-10-06
1955	1955-05-05	1955-09-22
1956	1956-06-14	1956-09-14
1957	1957-04-27	1957-09-13
1958	1958-06-11	1958-09-18
1959	1959-05-04	1959-10-06
1960	1960-04-24	1960-09-06
1961	1961-06-03	1961-09-26
1962	1962-05-15	1962-09-14
1963	1963-05-10	1963-08-04
1964	1964-05-20	1964-09-12
1965	1965-07-10	1965-09-22
1966	1966-06-10	1966-08-23
1967	1967-06-14	1967-08-04
1968	1968-06-24	1968-09-25
1969	1969-05-30	1969-08-19
1970	1970-05-22	1970-09-27
1971	1971-06-29	1971-09-08
1972	1972-06-16	1972-07-25
1974	1974-06-10	1974-07-15
1975	1975-06-20	1975-09-06
1976	1976-04-19	1976-09-10
1977	1977-07-06	1977-09-03
1979	1979-06-09	1979-08-10
1980	1980-06-15	1980-09-01
1981	1981-06-14	1981-08-06
1982	1982-05-15	1982-07-27
1983	1983-06-24	1983-09-19
1984	1984-06-07	1984-09-14
1985	1985-04-22	1985-09-09
1986	1986-04-28	1986-08-10
1987	1987-06-21	1987-08-27
1988	1988-06-07	1988-08-27
1989	1989-05-31	1989-09-10
1990	1990-06-18	1990-09-07
1991	1991-05-29	1991-09-18
1992	1992-07-10	1992-09-09
1993	1993-06-09	1993-09-16
1994	1994-06-06	1994-08-14
1995	1995-07-06	1995-09-01
1996	1996-05-19	1996-08-24
1997	1997-06-22	1997-09-20
1998	1998-06-25	1998-09-28
1999	1999-06-09	1999-08-18
2000	2000-05-08	2000-08-10
2001	2001-04-24	2001-08-11
2002	2002-04-17	2002-09-11
2003	2003-06-26	2003-08-30
2004	2004-05-23	2004-08-30
2005	2005-06-07	2005-09-24
2006	2006-05-30	2006-08-29
2011	2011-05-31	2011-09-05

Every Fixed Threshold

Fixed thresholds at Union 3 SSE
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	80	71	1919	42
35 C (95 F): Days	15	11	1953	1
90 F (32.2 C): Days	65	34	1944	8
100 F (37.8 C): Days	3	1	1919	1
0 C (32 F): Ice days (max	80	34	1963	8
0 C (32 F): Frost days (min	78	167	1917	122
-10 C (14 F): Days with min	78	51	1960	9
-20 C (-4 F): Days with min	37	9	1970	2
-30 C (-22 F): Days with min	4	2	1996	2
20 C (68 F): Tropical nights (min	39	11	2011	11
10 mm (0.39 in): Days with 10 mm or more rain	96	50	2003	38
25 mm (0.98 in): Days with 25 mm or more rain	96	16	2003	9
50 mm (1.97 in): Days with 50 mm or more rain	48	4	1954	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1954	1
10 cm (3.9 in): Days with 10 cm or more snowfall	46	6	1996	2
25 cm (9.8 in): Days with 25 cm or more snowfall	10	2	1996	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1907.

Download the Data

Data for Union 3 SSE 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).

Union 3 SSE Threshold Days by Year (USC00469011)

Key Facts for Union 3 SSE Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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