Jackson 4 NW Threshold Days by Year (USW00013956)

16 fixed thresholds counted per year at Jackson 4 NW (USW00013956): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Jackson 4 NW Thresholds

Jackson 4 NW: days with 10 mm (0.39 in) or more of precipitation in 72 years, most in 1923 with 60.
Jackson 4 NW: days with 25 mm (0.98 in) or more of precipitation in 72 years, most in 1923 with 25.
Jackson 4 NW: days with a maximum temperature at or above 30 C (86 F) in 71 years, most in 1927 with 164.
Jackson 4 NW: days with a maximum temperature at or above 90 F (32.2 C) in 71 years, most in 1902 with 129.
16 fixed thresholds have at least one qualifying day at Jackson 4 NW.

Days at or above 30 C (86 F)

71 years with a qualifying day

Days per year at Jackson 4 NW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 164 in 1927.

Days at or above 30 C (86 F) per year at Jackson 4 NW
Year	Days	Decade average
1896	151	139.7
1897	136	139.7
1898	132	139.7
1900	122	127.5
1901	120	127.5
1902	157	127.5
1903	118	127.5
1904	131	127.5
1905	120	127.5
1906	118	127.5
1907	118	127.5
1908	134	127.5
1909	137	127.5
1910	145	137.9
1911	152	137.9
1912	138	137.9
1913	126	137.9
1914	135	137.9
1915	135	137.9
1916	137	137.9
1917	126	137.9
1918	150	137.9
1919	135	137.9
1920	139	141.6
1922	148	141.6
1923	128	141.6
1924	134	141.6
1925	152	141.6
1926	136	141.6
1927	164	141.6
1928	134	141.6
1929	139	141.6
1930	130	131.1
1931	133	131.1
1932	107	131.1
1933	134	131.1
1934	127	131.1
1935	133	131.1
1936	144	131.1
1937	127	131.1
1938	136	131.1
1939	140	131.1
1940	116	133.2
1941	150	133.2
1942	126	133.2
1943	142	133.2
1944	144	133.2
1945	123	133.2
1946	122	133.2
1947	136	133.2
1948	137	133.2
1949	136	133.2
1950	124	133.4
1951	150	133.4
1952	140	133.4
1953	146	133.4
1954	149	133.4
1955	146	133.4
1956	120	133.4
1957	114	133.4
1958	109	133.4
1959	136	133.4
1960	123	123.1
1961	112	123.1
1962	146	123.1
1965	139	123.1
1966	113	123.1
1967	105	123.1
1968	122	123.1
1969	125	123.1
1970	127	127

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

First to last qualifying date each year at Jackson 4 NW
Year	First date	Last date
1896	1896-04-01	1896-10-07
1897	1897-03-23	1897-10-18
1898	1898-05-02	1898-10-11
1900	1900-05-07	1900-10-25
1901	1901-04-17	1901-11-02
1902	1902-04-20	1902-11-15
1903	1903-04-08	1903-10-07
1904	1904-04-23	1904-10-10
1905	1905-04-27	1905-10-02
1906	1906-04-11	1906-09-19
1907	1907-03-19	1907-10-04
1908	1908-03-17	1908-11-08
1909	1909-05-06	1909-11-08
1910	1910-03-04	1910-10-26
1911	1911-02-15	1911-11-06
1912	1912-03-21	1912-10-31
1913	1913-04-01	1913-10-10
1914	1914-03-30	1914-11-06
1915	1915-04-17	1915-11-08
1916	1916-03-21	1916-11-13
1917	1917-03-26	1917-10-29
1918	1918-02-25	1918-10-08
1919	1919-04-23	1919-10-31
1920	1920-04-16	1920-11-09
1922	1922-04-07	1922-11-04
1923	1923-03-11	1923-10-16
1924	1924-04-15	1924-11-13
1925	1925-04-12	1925-10-16
1926	1926-04-23	1926-10-20
1927	1927-03-18	1927-11-02
1928	1928-03-26	1928-10-16
1929	1929-03-23	1929-10-19
1930	1930-04-07	1930-11-19
1931	1931-04-16	1931-11-16
1932	1932-04-20	1932-10-18
1933	1933-04-30	1933-10-21
1934	1934-04-04	1934-10-24
1935	1935-03-24	1935-10-31
1936	1936-03-24	1936-11-02
1937	1937-04-17	1937-10-31
1938	1938-04-29	1938-10-15
1939	1939-05-11	1939-10-27
1940	1940-04-01	1940-10-27
1941	1941-04-19	1941-10-24
1942	1942-04-19	1942-10-18
1943	1943-04-06	1943-10-22
1944	1944-04-15	1944-10-30
1945	1945-03-16	1945-10-04
1946	1946-03-30	1946-11-03
1947	1947-04-06	1947-10-22
1948	1948-03-19	1948-10-01
1949	1949-04-24	1949-10-21
1950	1950-04-27	1950-10-31
1951	1951-04-20	1951-10-30
1952	1952-04-29	1952-10-05
1953	1953-03-18	1953-10-22
1954	1954-04-03	1954-10-14
1955	1955-04-05	1955-11-13
1956	1956-04-28	1956-10-06
1957	1957-04-18	1957-09-22
1958	1958-04-23	1958-10-09
1959	1959-05-01	1959-10-12
1960	1960-04-22	1960-10-04
1961	1961-05-05	1961-10-12
1962	1962-04-29	1962-10-20
1965	1965-04-04	1965-10-17
1966	1966-04-13	1966-10-14
1967	1967-03-11	1967-10-14
1968	1968-04-19	1968-10-15
1969	1969-04-03	1969-10-19
1970	1970-04-18	1970-10-08

Every Fixed Threshold

Fixed thresholds at Jackson 4 NW
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	71	164	1927	127
35 C (95 F): Days	69	85	1954	16
40 C (104 F): Days	14	12	1902	5
90 F (32.2 C): Days	71	129	1902	75
100 F (37.8 C): Days	42	46	1902	1
0 C (32 F): Ice days (max	38	8	1940	1
0 C (32 F): Frost days (min	69	60	1900	40
-10 C (14 F): Days with min	25	8	1940	2
-20 C (-4 F): Days with min	1	1	1940	1
20 C (68 F): Tropical nights (min	69	127	1925	110
25 C (77 F): Days with min	35	5	1925	1
10 mm (0.39 in): Days with 10 mm or more rain	72	60	1923	35
25 mm (0.98 in): Days with 25 mm or more rain	72	25	1923	17
50 mm (1.97 in): Days with 50 mm or more rain	71	8	1923	2
100 mm (3.94 in): Days with 100 mm or more rain	22	2	1897	1
10 cm (3.9 in): Days with 10 cm or more snowfall	6	1	1940	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1896.

Download the Data

Data for Jackson 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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

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

Jackson 4 NW Threshold Days by Year (USW00013956)

Key Facts for Jackson 4 NW Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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