Cloverdale Threshold Days by Year (USC00041837)

13 fixed thresholds counted per year at Cloverdale (USC00041837): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Cloverdale Thresholds

Cloverdale: days with a maximum temperature at or above 30 C (86 F) in 47 years, most in 1939 with 133.
Cloverdale: days with a maximum temperature at or above 35 C (95 F) in 47 years, most in 1936 with 63.
Cloverdale: days with a maximum temperature at or above 90 F (32.2 C) in 47 years, most in 1936 with 103.
Cloverdale: days with a maximum temperature at or above 100 F (37.8 C) in 47 years, most in 1936 with 35.
13 fixed thresholds have at least one qualifying day at Cloverdale.

Days at or above 30 C (86 F)

47 years with a qualifying day

Days per year at Cloverdale with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 133 in 1939.

Days at or above 30 C (86 F) per year at Cloverdale
Year	Days	Decade average
1903	107	91.9
1904	107	91.9
1905	88	91.9
1906	90	91.9
1907	68	91.9
1908	94	91.9
1909	89	91.9
1911	57	68.9
1912	39	68.9
1913	86	68.9
1914	64	68.9
1915	82	68.9
1916	66	68.9
1917	87	68.9
1918	80	68.9
1919	59	68.9
1920	34	85.5
1921	74	85.5
1922	113	85.5
1923	92	85.5
1924	104	85.5
1925	60	85.5
1926	113	85.5
1927	87	85.5
1928	109	85.5
1929	69	85.5
1930	82	102.4
1931	89	102.4
1932	72	102.4
1933	102	102.4
1934	103	102.4
1935	103	102.4
1936	122	102.4
1937	111	102.4
1938	107	102.4
1939	133	102.4
1940	103	104.4
1941	92	104.4
1942	111	104.4
1943	99	104.4
1944	112	104.4
1945	115	104.4
1946	99	104.4
1951	103	96.5
1952	101	96.5
1953	90	96.5
1954	92	96.5

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

First to last qualifying date each year at Cloverdale
Year	First date	Last date
1903	1903-05-01	1903-10-21
1904	1904-04-07	1904-10-23
1905	1905-03-06	1905-10-11
1906	1906-04-19	1906-10-25
1907	1907-04-19	1907-10-15
1908	1908-03-22	1908-11-07
1909	1909-04-15	1909-10-12
1911	1911-03-28	1911-10-25
1912	1912-05-13	1912-10-14
1913	1913-04-23	1913-10-27
1914	1914-03-16	1914-10-14
1915	1915-03-22	1915-10-28
1916	1916-03-10	1916-09-20
1917	1917-05-31	1917-10-27
1918	1918-03-30	1918-10-19
1919	1919-05-19	1919-10-15
1920	1920-04-26	1920-09-29
1921	1921-04-27	1921-10-20
1922	1922-04-27	1922-10-02
1923	1923-03-25	1923-10-20
1924	1924-04-06	1924-10-03
1925	1925-03-21	1925-10-26
1926	1926-03-22	1926-11-09
1927	1927-04-23	1927-10-22
1928	1928-04-06	1928-10-19
1929	1929-03-03	1929-10-22
1930	1930-02-15	1930-10-18
1931	1931-04-16	1931-10-01
1932	1932-05-10	1932-10-28
1933	1933-04-02	1933-10-25
1934	1934-04-07	1934-10-11
1935	1935-05-04	1935-10-27
1936	1936-04-10	1936-11-18
1937	1937-04-21	1937-10-24
1938	1938-04-17	1938-10-26
1939	1939-03-16	1939-10-30
1940	1940-04-10	1940-10-18
1941	1941-05-10	1941-11-05
1942	1942-05-18	1942-10-22
1943	1943-05-09	1943-10-16
1944	1944-03-17	1944-10-26
1945	1945-03-30	1945-11-03
1946	1946-04-23	1946-10-26
1951	1951-04-08	1951-10-14
1952	1952-04-17	1952-10-05
1953	1953-04-21	1953-10-08
1954	1954-04-15	1954-10-15

Every Fixed Threshold

Fixed thresholds at Cloverdale
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	47	133	1939	92
35 C (95 F): Days	47	63	1936	33
40 C (104 F): Days	42	14	1937	6
45 C (113 F): Days	1	2	1905	2
90 F (32.2 C): Days	47	103	1936	64
100 F (37.8 C): Days	47	35	1936	12
110 F (43.3 C): Days	15	5	1905	1
0 C (32 F): Frost days (min	47	34	1917	16
20 C (68 F): Tropical nights (min	24	4	1913	2
10 mm (0.39 in): Days with 10 mm or more rain	33	51	1909	35
25 mm (0.98 in): Days with 25 mm or more rain	33	26	1909	17
50 mm (1.97 in): Days with 50 mm or more rain	29	12	1940	5
100 mm (3.94 in): Days with 100 mm or more rain	8	2	1904	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1903.

Download the Data

Data for Cloverdale 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).

Cloverdale Threshold Days by Year (USC00041837)

Key Facts for Cloverdale Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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