Riverview Threshold Days by Year (SF003393570)

5 fixed thresholds counted per year at Riverview (SF003393570): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Riverview Thresholds

Riverview: days with 10 mm (0.39 in) or more of precipitation in 58 years, most in 1943 with 35.
Riverview: days with 25 mm (0.98 in) or more of precipitation in 58 years, most in 1976 with 17.
Riverview: days with 50 mm (1.97 in) or more of precipitation in 52 years, most in 1940 with 8.
Riverview: days with 100 mm (3.94 in) or more of precipitation in 20 years, most in 1949 with 3.
5 fixed thresholds have at least one qualifying day at Riverview.

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

58 years with a qualifying day

Days per year at Riverview with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 35 in 1943.

Days with 10 mm (0.39 in) or more of precipitation per year at Riverview
Year	Days	Decade average
1926	16	21.8
1927	24	21.8
1928	15	21.8
1929	32	21.8
1930	17	22.3
1931	12	22.3
1932	28	22.3
1933	18	22.3
1935	13	22.3
1936	25	22.3
1937	32	22.3
1938	25	22.3
1939	31	22.3
1940	27	24.4
1942	28	24.4
1943	35	24.4
1944	24	24.4
1945	20	24.4
1946	18	24.4
1947	27	24.4
1948	15	24.4
1949	26	24.4
1950	19	22
1951	17	22
1952	21	22
1953	16	22
1954	27	22
1955	26	22
1956	32	22
1959	18	22
1960	29	22.2
1961	25	22.2
1962	25	22.2
1963	23	22.2
1964	22	22.2
1965	18	22.2
1966	15	22.2
1967	19	22.2
1968	22	22.2
1969	24	22.2
1970	18	26.3
1971	34	26.3
1972	32	26.3
1973	20	26.3
1974	24	26.3
1975	28	26.3
1976	32	26.3
1977	27	26.3
1978	27	26.3
1979	21	26.3
1980	11	21.5
1981	27	21.5
1982	14	21.5
1983	22	21.5
1984	34	21.5
1985	24	21.5
1986	20	21.5
1989	20	21.5

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

First to last qualifying date each year at Riverview
Year	First date	Last date
1926	1926-01-31	1926-12-21
1927	1927-01-26	1927-12-31
1928	1928-01-01	1928-12-27
1929	1929-01-06	1929-12-08
1930	1930-01-16	1930-12-30
1931	1931-01-01	1931-11-20
1932	1932-01-04	1932-12-26
1933	1933-01-13	1933-12-14
1935	1935-01-11	1935-12-16
1936	1936-01-18	1936-11-23
1937	1937-01-06	1937-12-23
1938	1938-01-05	1938-12-31
1939	1939-01-01	1939-12-25
1940	1940-01-30	1940-12-22
1942	1942-01-14	1942-12-31
1943	1943-02-01	1943-12-19
1944	1944-01-28	1944-12-10
1945	1945-01-07	1945-12-30
1946	1946-01-09	1946-12-12
1947	1947-01-09	1947-12-26
1948	1948-01-25	1948-12-01
1949	1949-01-12	1949-12-28
1950	1950-01-09	1950-12-31
1951	1951-01-03	1951-12-11
1952	1952-01-31	1952-12-29
1953	1953-01-18	1953-12-18
1954	1954-01-10	1954-11-27
1955	1955-01-04	1955-12-20
1956	1956-02-03	1956-12-22
1959	1959-01-06	1959-12-17
1960	1960-01-03	1960-12-30
1961	1961-01-18	1961-12-24
1962	1962-01-08	1962-12-24
1963	1963-01-23	1963-12-21
1964	1964-01-01	1964-11-20
1965	1965-01-06	1965-12-28
1966	1966-01-05	1966-12-21
1967	1967-01-16	1967-11-29
1968	1968-01-19	1968-12-07
1969	1969-02-10	1969-12-24
1970	1970-01-15	1970-12-06
1971	1971-01-11	1971-12-13
1972	1972-01-14	1972-12-16
1973	1973-01-12	1973-12-27
1974	1974-01-03	1974-12-26
1975	1975-01-11	1975-12-21
1976	1976-01-06	1976-12-30
1977	1977-01-24	1977-12-30
1978	1978-01-19	1978-12-04
1979	1979-03-03	1979-12-26
1980	1980-01-29	1980-12-14
1981	1981-01-08	1981-11-29
1982	1982-01-21	1982-11-05
1983	1983-01-01	1983-12-26
1984	1984-01-09	1984-12-23
1985	1985-01-04	1985-12-06
1986	1986-01-04	1986-12-29
1989	1989-02-02	1989-12-31

Every Fixed Threshold

Fixed thresholds at Riverview
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	58	35	1943	20
25 mm (0.98 in): Days with 25 mm or more rain	58	17	1976	8
50 mm (1.97 in): Days with 50 mm or more rain	52	8	1940	4
100 mm (3.94 in): Days with 100 mm or more rain	20	3	1949	1
200 mm (7.87 in): Days with 200 mm or more rain	5	1	1943	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1926.

Download the Data

Data for Riverview 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).

Riverview Threshold Days by Year (SF003393570)

Key Facts for Riverview Thresholds

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

Every Fixed Threshold

Download the Data

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