Pinal Rch Threshold Days by Year (USC00026561)

6 fixed thresholds counted per year at Pinal Rch (USC00026561): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Pinal Rch Thresholds

Pinal Rch: days with 10 mm (0.39 in) or more of precipitation in 76 years, most in 1905 with 45.
Pinal Rch: days with 25 mm (0.98 in) or more of precipitation in 76 years, most in 1905 with 24.
Pinal Rch: days with 10 cm (3.9 in) or more of snowfall in 63 years, most in 1915 with 6.
Pinal Rch: days with 50 mm (1.97 in) or more of precipitation in 53 years, most in 1914 with 5.
6 fixed thresholds have at least one qualifying day at Pinal Rch.

Days with 10 mm (0.39 in) or more of precipitation

76 years with a qualifying day

Days per year at Pinal Rch with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 45 in 1905.

Days with 10 mm (0.39 in) or more of precipitation per year at Pinal Rch
Year	Days	Decade average
1896	17	17.5
1897	19	17.5
1898	18	17.5
1899	16	17.5
1900	13	21.8
1901	17	21.8
1902	15	21.8
1903	12	21.8
1905	45	21.8
1906	24	21.8
1907	21	21.8
1908	27	21.8
1909	22	21.8
1910	12	22.9
1911	25	22.9
1912	24	22.9
1913	19	22.9
1914	31	22.9
1915	22	22.9
1916	27	22.9
1917	16	22.9
1918	27	22.9
1919	26	22.9
1920	22	20.4
1921	19	20.4
1922	23	20.4
1923	28	20.4
1924	16	20.4
1925	18	20.4
1926	23	20.4
1927	25	20.4
1928	14	20.4
1929	16	20.4
1930	27	22.3
1931	25	22.3
1932	29	22.3
1933	24	22.3
1934	13	22.3
1935	23	22.3
1936	29	22.3
1937	17	22.3
1938	19	22.3
1939	17	22.3
1940	23	20
1941	31	20
1942	18	20
1943	21	20
1944	22	20
1945	23	20
1946	18	20
1947	14	20
1948	15	20
1949	15	20
1950	13	17.8
1951	24	17.8
1952	25	17.8
1953	14	17.8
1954	19	17.8
1955	20	17.8
1956	8	17.8
1957	18	17.8
1958	19	17.8
1959	18	17.8
1960	17	19.3
1961	17	19.3
1962	18	19.3
1963	23	19.3
1964	17	19.3
1965	29	19.3
1966	11	19.3
1967	21	19.3
1968	21	19.3
1969	19	19.3
1970	15	17
1971	14	17
1972	22	17

For each year, a bar from the first to the last day at Pinal Rch meeting 10 mm (0.39 in).

First to last qualifying date each year at Pinal Rch
Year	First date	Last date
1896	1896-01-28	1896-12-29
1897	1897-01-01	1897-12-19
1898	1898-01-04	1898-12-10
1899	1899-01-11	1899-11-14
1900	1900-02-07	1900-11-19
1901	1901-01-08	1901-10-29
1902	1902-01-24	1902-12-13
1903	1903-02-02	1903-12-11
1905	1905-01-09	1905-12-29
1906	1906-01-19	1906-12-31
1907	1907-01-06	1907-11-07
1908	1908-02-02	1908-12-17
1909	1909-01-14	1909-12-23
1910	1910-01-02	1910-11-14
1911	1911-01-10	1911-10-29
1912	1912-03-04	1912-12-08
1913	1913-01-11	1913-12-20
1914	1914-01-15	1914-12-28
1915	1915-01-22	1915-12-31
1916	1916-01-09	1916-12-25
1917	1917-01-03	1917-09-20
1918	1918-01-10	1918-12-22
1919	1919-01-31	1919-12-09
1920	1920-01-04	1920-12-20
1921	1921-02-05	1921-12-27
1922	1922-01-02	1922-12-01
1923	1923-01-25	1923-12-31
1924	1924-03-16	1924-12-24
1925	1925-01-15	1925-12-03
1926	1926-01-03	1926-12-23
1927	1927-02-12	1927-12-28
1928	1928-02-05	1928-12-28
1929	1929-01-17	1929-09-23
1930	1930-01-08	1930-12-27
1931	1931-01-04	1931-12-10
1932	1932-01-04	1932-12-23
1933	1933-01-18	1933-12-14
1934	1934-02-24	1934-12-29
1935	1935-01-06	1935-12-21
1936	1936-01-29	1936-12-30
1937	1937-01-01	1937-12-13
1938	1938-01-21	1938-12-22
1939	1939-01-07	1939-12-23
1940	1940-01-05	1940-12-31
1941	1941-01-11	1941-12-12
1942	1942-01-01	1942-12-26
1943	1943-01-07	1943-12-26
1944	1944-02-24	1944-11-25
1945	1945-01-17	1945-12-24
1946	1946-01-03	1946-12-28
1947	1947-02-27	1947-12-09
1948	1948-02-26	1948-12-28
1949	1949-01-03	1949-12-21
1950	1950-01-13	1950-11-15
1951	1951-01-01	1951-12-31
1952	1952-01-14	1952-12-21
1953	1953-01-07	1953-11-18
1954	1954-01-14	1954-12-11
1955	1955-01-04	1955-12-03
1956	1956-01-29	1956-12-08
1957	1957-01-04	1957-12-06
1958	1958-02-04	1958-11-17
1959	1959-02-09	1959-12-26
1960	1960-01-01	1960-12-08
1961	1961-01-27	1961-12-16
1962	1962-01-14	1962-12-24
1963	1963-01-03	1963-11-22
1964	1964-01-23	1964-12-29
1965	1965-01-07	1965-12-30
1966	1966-01-18	1966-12-27
1967	1967-01-24	1967-12-20
1968	1968-01-27	1968-12-27
1969	1969-01-15	1969-12-29
1970	1970-02-11	1970-12-22
1971	1971-01-03	1971-12-27
1972	1972-06-07	1972-12-29

Every Fixed Threshold

Fixed thresholds at Pinal Rch
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
10 mm (0.39 in): Days with 10 mm or more rain	76	45	1905	22
25 mm (0.98 in): Days with 25 mm or more rain	76	24	1905	9
50 mm (1.97 in): Days with 50 mm or more rain	53	5	1914	3
100 mm (3.94 in): Days with 100 mm or more rain	6	1	1905	1
10 cm (3.9 in): Days with 10 cm or more snowfall	63	6	1915	1
25 cm (9.8 in): Days with 25 cm or more snowfall	13	2	1918	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1896.

Download the Data

Data for Pinal Rch 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).

Pinal Rch Threshold Days by Year (USC00026561)

Key Facts for Pinal Rch Thresholds

Days with 10 mm (0.39 in) or more of precipitation

Every Fixed Threshold

Download the Data

Related