Placerville Threshold Days by Year (USC00046960)

17 fixed thresholds counted per year at Placerville (USC00046960): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Placerville Thresholds

Placerville: days with 10 mm (0.39 in) or more of precipitation in 80 years, most in 1983 with 58.
Placerville: days with 25 mm (0.98 in) or more of precipitation in 80 years, most in 1940 with 27.
Placerville: days with a maximum temperature at or above 30 C (86 F) in 73 years, most in 1988 with 116.
Placerville: days with a maximum temperature at or above 35 C (95 F) in 73 years, most in 1932 with 71.
17 fixed thresholds have at least one qualifying day at Placerville.

Days at or above 30 C (86 F)

73 years with a qualifying day

Days per year at Placerville with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 116 in 1988.

Days at or above 30 C (86 F) per year at Placerville
Year	Days	Decade average
1918	90	94.5
1919	99	94.5
1920	65	78.6
1921	76	78.6
1923	80	78.6
1924	106	78.6
1925	77	78.6
1926	79	78.6
1927	59	78.6
1928	84	78.6
1929	81	78.6
1930	93	103.8
1931	106	103.8
1932	114	103.8
1933	97	103.8
1934	102	103.8
1935	103	103.8
1936	110	103.8
1937	105	103.8
1938	104	103.8
1939	104	103.8
1940	103	95.2
1941	76	95.2
1942	92	95.2
1946	93	95.2
1947	112	95.2
1952	102	86.5
1953	83	86.5
1954	75	86.5
1955	72	86.5
1956	83	86.5
1957	84	86.5
1958	102	86.5
1959	91	86.5
1960	106	83
1961	98	83
1962	87	83
1963	71	83
1964	75	83
1965	57	83
1966	78	83
1967	100	83
1968	75	83
1969	83	83
1970	102	84
1971	86	84
1972	82	84
1973	87	84
1974	96	84
1975	83	84
1976	67	84
1979	69	84
1982	48	88.8
1983	63	88.8
1984	111	88.8
1985	93	88.8
1986	104	88.8
1987	94	88.8
1988	116	88.8
1989	81	88.8
1990	86	91.9
1991	78	91.9
1992	103	91.9
1993	87	91.9
1994	103	91.9
1995	89	91.9
1996	97	91.9
1997	92	91.9
2003	110	108.3
2006	113	108.3
2008	109	108.3
2009	101	108.3
2010	94	94

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

First to last qualifying date each year at Placerville
Year	First date	Last date
1918	1918-06-09	1918-10-13
1919	1919-04-30	1919-09-27
1920	1920-05-17	1920-09-15
1921	1921-05-12	1921-09-09
1923	1923-05-08	1923-09-18
1924	1924-05-01	1924-10-02
1925	1925-05-26	1925-09-24
1926	1926-05-27	1926-09-03
1927	1927-05-13	1927-08-27
1928	1928-05-13	1928-10-18
1929	1929-06-19	1929-09-17
1930	1930-05-23	1930-10-20
1931	1931-04-20	1931-10-15
1932	1932-05-10	1932-10-12
1933	1933-05-27	1933-10-18
1934	1934-04-19	1934-10-12
1935	1935-05-20	1935-10-09
1936	1936-05-08	1936-10-14
1937	1937-05-12	1937-10-22
1938	1938-05-13	1938-09-21
1939	1939-05-12	1939-09-23
1940	1940-05-09	1940-10-21
1941	1941-05-10	1941-10-03
1942	1942-05-20	1942-10-09
1946	1946-04-22	1946-09-28
1947	1947-04-14	1947-10-04
1952	1952-05-18	1952-10-08
1953	1953-06-18	1953-10-10
1954	1954-04-18	1954-10-16
1955	1955-05-20	1955-10-17
1956	1956-05-17	1956-10-02
1957	1957-05-28	1957-09-25
1958	1958-05-16	1958-10-18
1959	1959-05-12	1959-10-26
1960	1960-05-31	1960-10-06
1961	1961-06-13	1961-10-19
1962	1962-04-13	1962-10-02
1963	1963-05-18	1963-10-04
1964	1964-06-14	1964-10-13
1965	1965-05-29	1965-10-09
1966	1966-05-03	1966-09-30
1967	1967-05-17	1967-09-30
1968	1968-05-29	1968-09-28
1969	1969-05-18	1969-09-30
1970	1970-05-15	1970-10-04
1971	1971-06-16	1971-10-14
1972	1972-05-13	1972-09-16
1973	1973-05-12	1973-09-30
1974	1974-05-26	1974-10-19
1975	1975-05-14	1975-10-06
1976	1976-05-13	1976-10-10
1979	1979-05-14	1979-10-04
1982	1982-05-24	1982-09-24
1983	1983-05-20	1983-10-27
1984	1984-05-13	1984-10-08
1985	1985-04-15	1985-10-06
1986	1986-04-22	1986-10-10
1987	1987-04-16	1987-10-19
1988	1988-04-11	1988-10-25
1989	1989-04-07	1989-10-20
1990	1990-05-04	1990-10-05
1991	1991-05-24	1991-10-22
1992	1992-05-03	1992-10-25
1993	1993-05-11	1993-10-28
1994	1994-05-25	1994-10-10
1995	1995-05-29	1995-10-21
1996	1996-04-28	1996-10-10
1997	1997-05-10	1997-10-19
2003	2003-05-21	2003-10-29
2006	2006-05-11	2006-10-23
2008	2008-04-13	2008-10-28
2009	2009-04-21	2009-09-29
2010	2010-06-06	2010-11-04

Every Fixed Threshold

Fixed thresholds at Placerville
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	73	116	1988	94
35 C (95 F): Days	73	71	1932	36
40 C (104 F): Days	43	14	2006	2
45 C (113 F): Days	2	1	1933	1
90 F (32.2 C): Days	73	93	2008	67
100 F (37.8 C): Days	70	38	1932	11
110 F (43.3 C): Days	6	2	1933	2
0 C (32 F): Ice days (max	6	2	1937	1
0 C (32 F): Frost days (min	72	133	1919	30
-10 C (14 F): Days with min	7	6	1932	1
20 C (68 F): Tropical nights (min	40	30	2006	9
25 C (77 F): Days with min	8	6	1918	1
10 mm (0.39 in): Days with 10 mm or more rain	80	58	1983	31
25 mm (0.98 in): Days with 25 mm or more rain	80	27	1940	10
50 mm (1.97 in): Days with 50 mm or more rain	71	9	1996	4
100 mm (3.94 in): Days with 100 mm or more rain	6	1	1955	1
10 cm (3.9 in): Days with 10 cm or more snowfall	13	3	1964	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1918.

Download the Data

Data for Placerville 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).

Placerville Threshold Days by Year (USC00046960)

Key Facts for Placerville Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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