River Falls Threshold Days by Year (USC00016937)

7 fixed thresholds counted per year at River Falls (USC00016937): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for River Falls Thresholds

River Falls: days with 10 mm (0.39 in) or more of precipitation in 44 years, most in 1947 with 59.
River Falls: days with 25 mm (0.98 in) or more of precipitation in 44 years, most in 1947 with 33.
River Falls: days with 50 mm (1.97 in) or more of precipitation in 44 years, most in 1946 with 13.
River Falls: days with 100 mm (3.94 in) or more of precipitation in 24 years, most in 1929 with 4.
7 fixed thresholds have at least one qualifying day at River Falls.

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

44 years with a qualifying day

Days per year at River Falls with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 59 in 1947.

Days with 10 mm (0.39 in) or more of precipitation per year at River Falls
Year	Days	Decade average
1929	57	57
1930	42	42.6
1931	41	42.6
1932	48	42.6
1933	42	42.6
1934	45	42.6
1935	35	42.6
1936	48	42.6
1937	46	42.6
1938	29	42.6
1939	50	42.6
1940	41	49.9
1941	44	49.9
1942	54	49.9
1943	44	49.9
1944	54	49.9
1945	48	49.9
1946	56	49.9
1947	59	49.9
1948	57	49.9
1949	42	49.9
1950	40	43.2
1951	47	43.2
1952	39	43.2
1953	57	43.2
1954	27	43.2
1955	36	43.2
1956	39	43.2
1957	51	43.2
1958	43	43.2
1959	53	43.2
1960	47	43.5
1961	58	43.5
1962	34	43.5
1963	38	43.5
1964	56	43.5
1965	41	43.5
1966	36	43.5
1967	46	43.5
1968	36	43.5
1969	43	43.5
1970	47	47
1972	48	47
1973	46	47

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

First to last qualifying date each year at River Falls
Year	First date	Last date
1929	1929-01-06	1929-12-22
1930	1930-01-03	1930-12-06
1931	1931-01-05	1931-12-31
1932	1932-01-06	1932-12-27
1933	1933-01-12	1933-12-19
1934	1934-01-02	1934-12-26
1935	1935-01-05	1935-12-29
1936	1936-01-02	1936-12-31
1937	1937-01-01	1937-12-23
1938	1938-01-06	1938-12-27
1939	1939-01-05	1939-12-27
1940	1940-01-12	1940-12-27
1941	1941-01-03	1941-12-26
1942	1942-01-01	1942-12-29
1943	1943-01-08	1943-12-26
1944	1944-01-03	1944-12-11
1945	1945-01-01	1945-12-28
1946	1946-01-06	1946-12-31
1947	1947-01-01	1947-12-16
1948	1948-01-02	1948-12-30
1949	1949-01-05	1949-12-23
1950	1950-01-14	1950-12-29
1951	1951-01-04	1951-12-26
1952	1952-01-28	1952-12-25
1953	1953-01-09	1953-12-30
1954	1954-01-22	1954-12-30
1955	1955-01-10	1955-11-19
1956	1956-01-19	1956-12-24
1957	1957-01-23	1957-12-20
1958	1958-01-07	1958-12-28
1959	1959-01-16	1959-12-28
1960	1960-01-03	1960-12-16
1961	1961-01-01	1961-12-16
1962	1962-01-01	1962-12-29
1963	1963-01-12	1963-12-31
1964	1964-01-01	1964-12-27
1965	1965-01-24	1965-12-19
1966	1966-01-06	1966-12-31
1967	1967-01-01	1967-12-28
1968	1968-01-02	1968-12-31
1969	1969-01-19	1969-12-31
1970	1970-01-06	1970-12-31
1972	1972-01-02	1972-12-31
1973	1973-01-02	1973-12-30

Every Fixed Threshold

Fixed thresholds at River Falls
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	44	59	1947	46
25 mm (0.98 in): Days with 25 mm or more rain	44	33	1947	14
50 mm (1.97 in): Days with 50 mm or more rain	44	13	1946	7
100 mm (3.94 in): Days with 100 mm or more rain	24	4	1929	2
200 mm (7.87 in): Days with 200 mm or more rain	4	1	1929	1
10 cm (3.9 in): Days with 10 cm or more snowfall	1	1	1973	1
25 cm (9.8 in): Days with 25 cm or more snowfall	1	1	1973	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1929.

Download the Data

Data for River Falls 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).

River Falls Threshold Days by Year (USC00016937)

Key Facts for River Falls Thresholds

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

Every Fixed Threshold

Download the Data

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