Junction 4SSW Threshold Days by Year (USC00414670)

19 fixed thresholds counted per year at Junction 4SSW (USC00414670): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Junction 4SSW Thresholds

Junction 4SSW: days with 10 mm (0.39 in) or more of precipitation in 99 years, most in 1919 with 37.
Junction 4SSW: days with 25 mm (0.98 in) or more of precipitation in 99 years, most in 1923 with 17.
Junction 4SSW: days with a maximum temperature at or above 30 C (86 F) in 90 years, most in 1955 with 194.
Junction 4SSW: days with a maximum temperature at or above 35 C (95 F) in 90 years, most in 1980 with 123.
19 fixed thresholds have at least one qualifying day at Junction 4SSW.

Days at or above 30 C (86 F)

90 years with a qualifying day

Days per year at Junction 4SSW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 194 in 1955.

Days at or above 30 C (86 F) per year at Junction 4SSW
Year	Days	Decade average
1910	155	109.1
1911	152	109.1
1912	123	109.1
1914	63	109.1
1915	63	109.1
1916	109	109.1
1917	120	109.1
1918	156	109.1
1919	41	109.1
1920	70	130.7
1921	176	130.7
1922	175	130.7
1923	122	130.7
1924	132	130.7
1928	117	130.7
1929	123	130.7
1930	144	139.4
1931	138	139.4
1932	107	139.4
1933	156	139.4
1934	159	139.4
1935	68	139.4
1936	163	139.4
1937	176	139.4
1938	103	139.4
1939	180	139.4
1940	167	152.6
1941	154	152.6
1942	126	152.6
1943	148	152.6
1944	132	152.6
1946	152	152.6
1947	176	152.6
1948	175	152.6
1949	143	152.6
1950	176	174.3
1951	179	174.3
1952	164	174.3
1953	171	174.3
1954	184	174.3
1955	194	174.3
1956	191	174.3
1957	135	174.3
1970	139	147.4
1971	148	147.4
1972	176	147.4
1973	149	147.4
1974	148	147.4
1975	148	147.4
1976	123	147.4
1977	148	147.4
1980	147	152
1981	129	152
1986	149	152
1987	117	152
1988	190	152
1989	180	152
1990	142	148
1991	167	148
1992	144	148
1997	142	148
1998	149	148
1999	144	148
2000	163	143
2001	121	143
2002	146	143
2003	141	143
2004	122	143
2005	146	143
2006	170	143
2007	124	143
2008	160	143
2009	137	143
2010	128	154.7
2011	181	154.7
2012	164	154.7
2013	137	154.7
2014	162	154.7
2015	155	154.7
2016	148	154.7
2017	162	154.7
2018	151	154.7
2019	159	154.7
2020	167	164.4
2021	151	164.4
2022	173	164.4
2023	159	164.4
2024	173	164.4
2025	188	164.4
2026	140	164.4

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

First to last qualifying date each year at Junction 4SSW
Year	First date	Last date
1910	1910-03-03	1910-11-11
1911	1911-01-12	1911-10-14
1912	1912-02-19	1912-10-14
1914	1914-03-26	1914-10-09
1915	1915-07-01	1915-11-09
1916	1916-03-01	1916-12-07
1917	1917-01-29	1917-09-26
1918	1918-02-24	1918-10-11
1919	1919-04-06	1919-09-17
1920	1920-04-15	1920-10-19
1921	1921-01-05	1921-12-20
1922	1922-02-09	1922-10-29
1923	1923-04-07	1923-10-09
1924	1924-03-27	1924-11-06
1928	1928-01-16	1928-10-29
1929	1929-03-30	1929-10-21
1930	1930-04-05	1930-09-25
1931	1931-04-25	1931-10-20
1932	1932-03-20	1932-09-22
1933	1933-04-09	1933-12-14
1934	1934-03-06	1934-11-14
1935	1935-03-20	1935-10-04
1936	1936-03-06	1936-11-02
1937	1937-02-07	1937-11-07
1938	1938-03-03	1938-10-14
1939	1939-03-10	1939-12-12
1940	1940-02-28	1940-10-22
1941	1941-04-01	1941-10-23
1942	1942-04-06	1942-10-12
1943	1943-01-23	1943-09-30
1944	1944-03-26	1944-10-08
1946	1946-03-14	1946-12-28
1947	1947-04-01	1947-10-30
1948	1948-02-17	1948-11-04
1949	1949-04-07	1949-11-28
1950	1950-01-25	1950-11-28
1951	1951-01-19	1951-12-31
1952	1952-02-09	1952-11-17
1953	1953-01-26	1953-10-22
1954	1954-02-25	1954-12-04
1955	1955-03-04	1955-12-25
1956	1956-02-24	1956-11-12
1957	1957-01-09	1957-10-05
1970	1970-02-18	1970-11-07
1971	1971-01-22	1971-10-16
1972	1972-01-23	1972-10-19
1973	1973-04-02	1973-12-12
1974	1974-02-13	1974-10-09
1975	1975-01-26	1975-11-08
1976	1976-02-10	1976-10-03
1977	1977-03-14	1977-11-01
1980	1980-04-06	1980-10-14
1981	1981-04-21	1981-10-18
1986	1986-02-19	1986-10-05
1987	1987-04-11	1987-10-27
1988	1988-02-28	1988-11-15
1989	1989-02-26	1989-11-14
1990	1990-04-28	1990-10-18
1991	1991-03-04	1991-10-28
1992	1992-04-07	1992-10-31
1997	1997-03-21	1997-10-31
1998	1998-03-24	1998-10-05
1999	1999-04-08	1999-10-24
2000	2000-01-19	2000-10-05
2001	2001-04-14	2001-10-24
2002	2002-03-13	2002-11-09
2003	2003-04-05	2003-11-01
2004	2004-03-18	2004-10-22
2005	2005-02-16	2005-12-04
2006	2006-01-04	2006-11-10
2007	2007-02-23	2007-11-06
2008	2008-02-05	2008-10-11
2009	2009-02-25	2009-10-16
2010	2010-04-01	2010-12-22
2011	2011-02-28	2011-10-27
2012	2012-03-24	2012-11-02
2013	2013-03-17	2013-10-13
2014	2014-03-02	2014-10-31
2015	2015-03-24	2015-10-19
2016	2016-03-06	2016-11-02
2017	2017-01-24	2017-11-07
2018	2018-03-11	2018-11-07
2019	2019-03-25	2019-12-16
2020	2020-03-26	2020-10-26
2021	2021-03-28	2021-12-30
2022	2022-02-23	2022-11-08
2023	2023-02-16	2023-11-08
2024	2024-02-20	2024-12-31
2025	2025-02-08	2025-12-21
2026	2026-02-26	2026-10-11

Every Fixed Threshold

Fixed thresholds at Junction 4SSW
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	90	194	1955	140
35 C (95 F): Days	90	123	1980	59
40 C (104 F): Days	64	40	2023	1
90 F (32.2 C): Days	90	160	1937	115
100 F (37.8 C): Days	83	100	1980	15
110 F (43.3 C): Days	4	1	1936	1
0 C (32 F): Ice days (max	59	7	2021	2
0 C (32 F): Frost days (min	88	99	2010	40
-10 C (14 F): Days with min	66	12	2022	6
-20 C (-4 F): Days with min	3	1	1929	1
20 C (68 F): Tropical nights (min	88	103	1951	48
25 C (77 F): Days with min	37	8	2020	2
10 mm (0.39 in): Days with 10 mm or more rain	99	37	1919	18
25 mm (0.98 in): Days with 25 mm or more rain	99	17	1923	9
50 mm (1.97 in): Days with 50 mm or more rain	73	8	1914	3
100 mm (3.94 in): Days with 100 mm or more rain	15	2	1915	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	2018	1
10 cm (3.9 in): Days with 10 cm or more snowfall	13	2	1915	2
25 cm (9.8 in): Days with 25 cm or more snowfall	3	1	1919	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1910.

Download the Data

Data for Junction 4SSW 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).

Junction 4SSW Threshold Days by Year (USC00414670)

Key Facts for Junction 4SSW Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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