Park Valley Threshold Days by Year (USC00426658)

16 fixed thresholds counted per year at Park Valley (USC00426658): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Park Valley Thresholds

Park Valley: nights with a minimum temperature at or below 0 C (32 F) in 46 years, most in 1984 with 202.
Park Valley: nights with a minimum temperature at or below -10 C (14 F) in 46 years, most in 1984 with 77.
Park Valley: days with a maximum temperature at or above 30 C (86 F) in 45 years, most in 1961 with 64.
Park Valley: days with a maximum temperature at or below 0 C (32 F) in 45 years, most in 1984 with 58.
16 fixed thresholds have at least one qualifying day at Park Valley.

Days at or above 30 C (86 F)

45 years with a qualifying day

Days per year at Park Valley with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 64 in 1961.

Days at or above 30 C (86 F) per year at Park Valley
Year	Days	Decade average
1930	33	44.9
1931	50	44.9
1932	42	44.9
1933	55	44.9
1934	61	44.9
1935	48	44.9
1936	38	44.9
1938	30	44.9
1939	47	44.9
1940	62	42.8
1941	22	42.8
1942	38	42.8
1943	48	42.8
1944	46	42.8
1945	28	42.8
1946	39	42.8
1947	51	42.8
1948	44	42.8
1949	50	42.8
1950	42	47.2
1952	37	47.2
1953	56	47.2
1954	48	47.2
1955	46	47.2
1956	53	47.2
1957	51	47.2
1958	48	47.2
1959	44	47.2
1960	51	43
1961	64	43
1965	14	43
1974	59	36.7
1975	28	36.7
1976	29	36.7
1977	42	36.7
1978	29	36.7
1979	33	36.7
1980	18	30
1981	52	30
1982	24	30
1983	19	30
1984	21	30
1987	18	30
1988	57	30
1989	31	30

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

First to last qualifying date each year at Park Valley
Year	First date	Last date
1930	1930-06-11	1930-08-23
1931	1931-06-25	1931-09-07
1932	1932-06-22	1932-09-06
1933	1933-06-12	1933-09-14
1934	1934-06-12	1934-09-20
1935	1935-06-12	1935-09-20
1936	1936-06-12	1936-08-18
1938	1938-06-26	1938-08-24
1939	1939-05-29	1939-09-18
1940	1940-06-12	1940-09-02
1941	1941-06-23	1941-08-08
1942	1942-07-03	1942-08-23
1943	1943-07-02	1943-09-17
1944	1944-06-28	1944-09-23
1945	1945-07-03	1945-09-02
1946	1946-06-15	1946-09-13
1947	1947-07-02	1947-09-06
1948	1948-06-29	1948-09-15
1949	1949-07-01	1949-09-03
1950	1950-06-27	1950-09-07
1952	1952-06-08	1952-09-05
1953	1953-06-10	1953-09-15
1954	1954-05-19	1954-09-11
1955	1955-06-07	1955-09-07
1956	1956-06-09	1956-09-19
1957	1957-06-04	1957-09-07
1958	1958-05-25	1958-09-11
1959	1959-06-13	1959-09-11
1960	1960-05-11	1960-09-13
1961	1961-06-11	1961-08-28
1965	1965-07-14	1965-08-11
1974	1974-06-12	1974-09-09
1975	1975-07-03	1975-08-27
1976	1976-06-29	1976-09-06
1977	1977-06-05	1977-09-08
1978	1978-07-11	1978-09-05
1979	1979-06-26	1979-09-10
1980	1980-07-22	1980-09-06
1981	1981-06-23	1981-09-20
1982	1982-06-28	1982-08-26
1983	1983-07-06	1983-09-02
1984	1984-06-29	1984-08-21
1987	1987-06-28	1987-09-03
1988	1988-06-05	1988-09-06
1989	1989-05-07	1989-08-16

Every Fixed Threshold

Fixed thresholds at Park Valley
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	45	64	1961	31
35 C (95 F): Days	27	12	1931	2
90 F (32.2 C): Days	44	45	1940	11
100 F (37.8 C): Days	3	6	1931	1
0 C (32 F): Ice days (max	45	58	1984	42
0 C (32 F): Frost days (min	46	202	1984	152
-10 C (14 F): Days with min	46	77	1984	49
-20 C (-4 F): Days with min	28	16	1949	4
-30 C (-22 F): Days with min	1	0	n/a	1
20 C (68 F): Tropical nights (min	25	11	1931	2
25 C (77 F): Days with min	1	1	1943	1
10 mm (0.39 in): Days with 10 mm or more rain	45	11	1980	3
25 mm (0.98 in): Days with 25 mm or more rain	21	2	1965	1
50 mm (1.97 in): Days with 50 mm or more rain	1	1	1984	1
10 cm (3.9 in): Days with 10 cm or more snowfall	26	7	1948	2
25 cm (9.8 in): Days with 25 cm or more snowfall	2	1	1949	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1930.

Download the Data

Data for Park Valley 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).

Park Valley Threshold Days by Year (USC00426658)

Key Facts for Park Valley Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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