Philo Threshold Days by Year (USC00336590)

18 fixed thresholds counted per year at Philo (USC00336590): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Philo Thresholds

Philo: days with a maximum temperature at or above 30 C (86 F) in 62 years, most in 1939 with 103.
Philo: days with a maximum temperature at or above 90 F (32.2 C) in 62 years, most in 1936 with 72.
Philo: days with a maximum temperature at or below 0 C (32 F) in 62 years, most in 1963 with 41.
Philo: nights with a minimum temperature at or below 0 C (32 F) in 62 years, most in 1963 with 150.
18 fixed thresholds have at least one qualifying day at Philo.

Days at or above 30 C (86 F)

62 years with a qualifying day

Days per year at Philo with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 103 in 1939.

Days at or above 30 C (86 F) per year at Philo
Year	Days	Decade average
1902	56	61.7
1903	61	61.7
1905	56	61.7
1906	72	61.7
1907	46	61.7
1908	94	61.7
1909	47	61.7
1910	73	58.5
1911	78	58.5
1912	44	58.5
1913	67	58.5
1914	76	58.5
1915	38	58.5
1916	54	58.5
1917	28	58.5
1918	58	58.5
1919	69	58.5
1920	30	53.8
1921	62	53.8
1922	63	53.8
1923	48	53.8
1924	44	53.8
1925	75	53.8
1926	77	53.8
1927	48	53.8
1928	40	53.8
1929	51	53.8
1930	90	80.5
1931	78	80.5
1932	80	80.5
1933	72	80.5
1934	91	80.5
1935	64	80.5
1936	100	80.5
1937	66	80.5
1938	61	80.5
1939	103	80.5
1940	71	69.8
1941	98	69.8
1942	71	69.8
1943	67	69.8
1944	86	69.8
1945	59	69.8
1946	49	69.8
1947	59	69.8
1948	62	69.8
1949	76	69.8
1950	27	63.3
1951	52	63.3
1952	69	63.3
1953	77	63.3
1954	61	63.3
1955	80	63.3
1956	57	63.3
1957	70	63.3
1958	49	63.3
1959	91	63.3
1960	55	62
1961	57	62
1962	68	62
1963	57	62
1964	73	62

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

First to last qualifying date each year at Philo
Year	First date	Last date
1902	1902-04-22	1902-09-23
1903	1903-05-16	1903-10-04
1905	1905-05-02	1905-09-30
1906	1906-04-13	1906-09-20
1907	1907-05-14	1907-09-20
1908	1908-04-24	1908-10-07
1909	1909-04-29	1909-09-22
1910	1910-03-24	1910-10-18
1911	1911-05-10	1911-09-24
1912	1912-05-22	1912-10-11
1913	1913-04-25	1913-09-07
1914	1914-04-18	1914-09-22
1915	1915-04-24	1915-09-20
1916	1916-05-14	1916-10-08
1917	1917-05-18	1917-09-02
1918	1918-05-05	1918-08-26
1919	1919-05-29	1919-10-04
1920	1920-05-30	1920-09-27
1921	1921-04-25	1921-09-17
1922	1922-05-09	1922-10-06
1923	1923-05-28	1923-10-13
1924	1924-05-06	1924-09-02
1925	1925-04-24	1925-09-21
1926	1926-05-01	1926-10-04
1927	1927-05-09	1927-10-07
1928	1928-05-10	1928-10-13
1929	1929-03-25	1929-09-28
1930	1930-04-11	1930-09-26
1931	1931-05-16	1931-10-07
1932	1932-05-05	1932-09-20
1933	1933-05-01	1933-09-26
1934	1934-05-05	1934-09-25
1935	1935-05-28	1935-09-25
1936	1936-05-07	1936-09-27
1937	1937-05-27	1937-10-06
1938	1938-04-27	1938-10-18
1939	1939-04-24	1939-10-11
1940	1940-05-06	1940-10-14
1941	1941-04-13	1941-10-08
1942	1942-04-26	1942-10-08
1943	1943-05-06	1943-09-29
1944	1944-05-03	1944-10-06
1945	1945-05-21	1945-09-28
1946	1946-04-22	1946-10-05
1947	1947-05-28	1947-10-16
1948	1948-04-20	1948-09-19
1949	1949-05-03	1949-10-11
1950	1950-03-27	1950-09-10
1951	1951-04-25	1951-10-05
1952	1952-04-22	1952-10-01
1953	1953-05-10	1953-10-19
1954	1954-04-07	1954-10-12
1955	1955-04-20	1955-09-19
1956	1956-04-27	1956-10-15
1957	1957-04-20	1957-09-21
1958	1958-04-19	1958-09-26
1959	1959-05-02	1959-10-05
1960	1960-04-22	1960-09-23
1961	1961-05-14	1961-09-25
1962	1962-04-26	1962-10-11
1963	1963-05-08	1963-10-26
1964	1964-04-17	1964-09-22

Every Fixed Threshold

Fixed thresholds at Philo
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	62	103	1939	73
35 C (95 F): Days	52	27	1936	10
40 C (104 F): Days	6	4	1930	1
90 F (32.2 C): Days	62	72	1936	39
100 F (37.8 C): Days	21	10	1930	1
0 C (32 F): Ice days (max	62	41	1963	11
0 C (32 F): Frost days (min	62	150	1963	135
-10 C (14 F): Days with min	62	42	1963	29
-20 C (-4 F): Days with min	43	13	1963	1
-30 C (-22 F): Days with min	2	2	1918	2
20 C (68 F): Tropical nights (min	62	30	1949	9
25 C (77 F): Days with min	2	2	1934	1
10 mm (0.39 in): Days with 10 mm or more rain	62	49	1909	35
25 mm (0.98 in): Days with 25 mm or more rain	62	13	1907	11
50 mm (1.97 in): Days with 50 mm or more rain	32	5	1937	2
100 mm (3.94 in): Days with 100 mm or more rain	4	1	1907	1
10 cm (3.9 in): Days with 10 cm or more snowfall	43	5	1910	3
25 cm (9.8 in): Days with 25 cm or more snowfall	3	1	1910	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1902.

Download the Data

Data for Philo 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).

Philo Threshold Days by Year (USC00336590)

Key Facts for Philo Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related