Morris River Threshold Days by Year (USC00115820)

5 fixed thresholds counted per year at Morris River (USC00115820): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Morris River Thresholds

Morris River: days with 10 mm (0.39 in) or more of precipitation in 63 years, most in 1927 with 39.
Morris River: days with 25 mm (0.98 in) or more of precipitation in 63 years, most in 1975 with 15.
Morris River: days with 50 mm (1.97 in) or more of precipitation in 49 years, most in 1970 with 4.
Morris River: days with 10 cm (3.9 in) or more of snowfall in 19 years, most in 1950 with 3.
5 fixed thresholds have at least one qualifying day at Morris River.

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

63 years with a qualifying day

Days per year at Morris River with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 39 in 1927.

Days with 10 mm (0.39 in) or more of precipitation per year at Morris River
Year	Days	Decade average
1917	24	27
1918	30	27
1919	27	27
1920	23	28.9
1921	37	28.9
1922	27	28.9
1923	23	28.9
1924	26	28.9
1925	23	28.9
1926	32	28.9
1927	39	28.9
1928	29	28.9
1929	30	28.9
1930	26	26.8
1931	29	26.8
1932	31	26.8
1933	28	26.8
1934	18	26.8
1935	32	26.8
1936	24	26.8
1937	21	26.8
1938	34	26.8
1939	25	26.8
1940	22	28.5
1941	32	28.5
1942	37	28.5
1943	24	28.5
1944	26	28.5
1945	31	28.5
1946	25	28.5
1947	36	28.5
1948	25	28.5
1949	27	28.5
1950	31	26.6
1951	24	26.6
1952	29	26.6
1953	26	26.6
1954	27	26.6
1955	26	26.6
1956	13	26.6
1957	35	26.6
1958	23	26.6
1959	32	26.6
1960	21	24.5
1961	27	24.5
1962	24	24.5
1963	18	24.5
1964	18	24.5
1965	29	24.5
1966	29	24.5
1967	32	24.5
1968	19	24.5
1969	28	24.5
1970	31	29.8
1971	23	29.8
1972	36	29.8
1973	29	29.8
1974	27	29.8
1975	34	29.8
1976	24	29.8
1977	34	29.8
1978	26	29.8
1979	34	29.8

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

First to last qualifying date each year at Morris River
Year	First date	Last date
1917	1917-01-05	1917-10-26
1918	1918-01-07	1918-12-13
1919	1919-02-21	1919-11-30
1920	1920-01-24	1920-12-22
1921	1921-01-22	1921-12-17
1922	1922-01-04	1922-12-05
1923	1923-01-27	1923-12-13
1924	1924-01-10	1924-12-18
1925	1925-02-23	1925-12-05
1926	1926-01-04	1926-11-18
1927	1927-01-13	1927-12-31
1928	1928-02-18	1928-12-17
1929	1929-01-01	1929-12-01
1930	1930-01-02	1930-11-30
1931	1931-02-07	1931-12-09
1932	1932-01-01	1932-12-24
1933	1933-01-19	1933-12-20
1934	1934-03-27	1934-11-30
1935	1935-01-08	1935-12-07
1936	1936-01-01	1936-12-30
1937	1937-01-02	1937-10-20
1938	1938-01-24	1938-12-23
1939	1939-01-05	1939-11-10
1940	1940-01-14	1940-12-16
1941	1941-01-02	1941-12-26
1942	1942-01-31	1942-12-27
1943	1943-01-07	1943-12-06
1944	1944-02-22	1944-12-11
1945	1945-02-22	1945-12-25
1946	1946-01-05	1946-12-13
1947	1947-01-03	1947-12-05
1948	1948-01-02	1948-12-29
1949	1949-01-19	1949-12-26
1950	1950-01-04	1950-11-20
1951	1951-01-02	1951-11-13
1952	1952-01-19	1952-12-20
1953	1953-03-04	1953-12-04
1954	1954-01-27	1954-12-30
1955	1955-01-06	1955-11-15
1956	1956-02-17	1956-08-19
1957	1957-01-22	1957-12-19
1958	1958-01-22	1958-11-15
1959	1959-01-01	1959-12-28
1960	1960-01-12	1960-11-16
1961	1961-03-08	1961-12-23
1962	1962-01-07	1962-11-16
1963	1963-03-04	1963-11-23
1964	1964-03-05	1964-11-28
1965	1965-01-02	1965-12-25
1966	1966-01-13	1966-12-08
1967	1967-01-27	1967-12-21
1968	1968-01-28	1968-12-28
1969	1969-03-24	1969-12-08
1970	1970-02-09	1970-12-11
1971	1971-01-04	1971-12-30
1972	1972-03-13	1972-12-30
1973	1973-01-04	1973-12-19
1974	1974-01-20	1974-11-11
1975	1975-01-10	1975-12-30
1976	1976-02-21	1976-11-27
1977	1977-03-12	1977-12-20
1978	1978-03-21	1978-12-30
1979	1979-01-01	1979-12-25

Every Fixed Threshold

Fixed thresholds at Morris River
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	63	39	1927	34
25 mm (0.98 in): Days with 25 mm or more rain	63	15	1975	8
50 mm (1.97 in): Days with 50 mm or more rain	49	4	1970	1
100 mm (3.94 in): Days with 100 mm or more rain	3	1	1924	1
10 cm (3.9 in): Days with 10 cm or more snowfall	19	3	1950	3

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1917.

Download the Data

Data for Morris River 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).

Morris River Threshold Days by Year (USC00115820)

Key Facts for Morris River Thresholds

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

Every Fixed Threshold

Download the Data

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