Oroville 7 SE Threshold Days by Year (USC00048099)

17 fixed thresholds counted per year at Oroville 7 SE (USC00048099): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Oroville 7 SE Thresholds

Oroville 7 SE: nights with a minimum temperature at or below 0 C (32 F) in 29 years, most in 1928 with 30.
Oroville 7 SE: nights with a minimum temperature at or above 20 C (68 F) in 29 years, most in 1936 with 29.
Oroville 7 SE: days with a maximum temperature at or above 30 C (86 F) in 28 years, most in 1934 with 129.
Oroville 7 SE: days with a maximum temperature at or above 35 C (95 F) in 28 years, most in 1936 with 83.
17 fixed thresholds have at least one qualifying day at Oroville 7 SE.

Days at or above 30 C (86 F)

28 years with a qualifying day

Days per year at Oroville 7 SE with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 129 in 1934.

Days at or above 30 C (86 F) per year at Oroville 7 SE
Year	Days	Decade average
1920	96	111.2
1921	122	111.2
1922	110	111.2
1923	91	111.2
1924	123	111.2
1925	94	111.2
1926	120	111.2
1928	128	111.2
1929	117	111.2
1930	101	120.7
1931	120	120.7
1932	125	120.7
1933	118	120.7
1934	129	120.7
1935	129	120.7
1936	128	120.7
1937	119	120.7
1938	111	120.7
1939	127	120.7
1940	124	113.8
1941	96	113.8
1942	116	113.8
1943	115	113.8
1944	117	113.8
1945	122	113.8
1946	117	113.8
1947	125	113.8
1948	92	113.8

For each year, a bar from the first to the last day at Oroville 7 SE meeting 30 C (86 F).

First to last qualifying date each year at Oroville 7 SE
Year	First date	Last date
1920	1920-05-13	1920-09-29
1921	1921-04-27	1921-10-18
1922	1922-05-05	1922-10-21
1923	1923-05-07	1923-10-19
1924	1924-04-06	1924-09-29
1925	1925-05-03	1925-10-25
1926	1926-04-24	1926-10-06
1928	1928-05-05	1928-10-21
1929	1929-05-10	1929-11-03
1930	1930-05-19	1930-10-05
1931	1931-04-19	1931-10-02
1932	1932-05-09	1932-10-12
1933	1933-04-27	1933-10-24
1934	1934-04-09	1934-10-27
1935	1935-05-19	1935-10-11
1936	1936-04-13	1936-10-25
1937	1937-05-02	1937-10-22
1938	1938-05-09	1938-09-22
1939	1939-04-18	1939-10-29
1940	1940-05-09	1940-10-20
1941	1941-05-08	1941-10-17
1942	1942-05-19	1942-10-21
1943	1943-05-19	1943-10-15
1944	1944-05-02	1944-10-26
1945	1945-04-20	1945-10-15
1946	1946-04-24	1946-10-25
1947	1947-04-13	1947-10-08
1948	1948-06-07	1948-10-18

Every Fixed Threshold

Fixed thresholds at Oroville 7 SE
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	28	129	1934	92
35 C (95 F): Days	28	83	1936	41
40 C (104 F): Days	28	27	1936	5
45 C (113 F): Days	2	3	1933	1
90 F (32.2 C): Days	28	109	1936	72
100 F (37.8 C): Days	28	46	1945	12
110 F (43.3 C): Days	11	7	1933	1
0 C (32 F): Ice days (max	1	1	1932	1
0 C (32 F): Frost days (min	29	30	1928	23
20 C (68 F): Tropical nights (min	29	29	1936	2
25 C (77 F): Days with min	6	3	1925	1
10 mm (0.39 in): Days with 10 mm or more rain	20	45	1941	24
25 mm (0.98 in): Days with 25 mm or more rain	20	16	1940	3
50 mm (1.97 in): Days with 50 mm or more rain	12	4	1940	1
100 mm (3.94 in): Days with 100 mm or more rain	2	1	1932	1
10 cm (3.9 in): Days with 10 cm or more snowfall	1	6	1948	6
25 cm (9.8 in): Days with 25 cm or more snowfall	1	1	1948	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1920.

Download the Data

Data for Oroville 7 SE 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).

Oroville 7 SE Threshold Days by Year (USC00048099)

Key Facts for Oroville 7 SE Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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