Riverslea Tm Threshold Days by Year (ASN00039044)

5 fixed thresholds counted per year at Riverslea Tm (ASN00039044): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Riverslea Tm Thresholds

Riverslea Tm: days with 10 mm (0.39 in) or more of precipitation in 72 years, most in 1956 with 38.
Riverslea Tm: days with 25 mm (0.98 in) or more of precipitation in 72 years, most in 1916 with 14.
Riverslea Tm: days with 50 mm (1.97 in) or more of precipitation in 59 years, most in 1929 with 6.
Riverslea Tm: days with 100 mm (3.94 in) or more of precipitation in 21 years, most in 1928 with 3.
5 fixed thresholds have at least one qualifying day at Riverslea Tm.

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

72 years with a qualifying day

Days per year at Riverslea Tm with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 38 in 1956.

Days with 10 mm (0.39 in) or more of precipitation per year at Riverslea Tm
Year	Days	Decade average
1916	29	21
1917	25	21
1918	21	21
1919	9	21
1920	20	19.7
1921	21	19.7
1922	21	19.7
1923	12	19.7
1924	26	19.7
1925	17	19.7
1926	17	19.7
1927	23	19.7
1928	23	19.7
1929	17	19.7
1930	18	17.5
1931	17	17.5
1932	12	17.5
1935	16	17.5
1936	14	17.5
1937	21	17.5
1938	19	17.5
1939	23	17.5
1940	23	21.8
1941	17	21.8
1942	26	21.8
1943	27	21.8
1944	16	21.8
1952	17	22
1953	23	22
1955	26	22
1956	38	22
1957	8	22
1958	23	22
1959	19	22
1960	12	17.9
1961	21	17.9
1962	17	17.9
1963	19	17.9
1964	16	17.9
1965	15	17.9
1966	19	17.9
1967	22	17.9
1968	26	17.9
1969	12	17.9
1970	23	22.8
1971	20	22.8
1972	22	22.8
1973	26	22.8
1974	23	22.8
1975	20	22.8
1976	29	22.8
1977	20	22.8
1978	33	22.8
1979	12	22.8
1981	17	21
1982	16	21
1983	30	21
2002	9	9
2013	19	17.9
2014	19	17.9
2015	22	17.9
2016	15	17.9
2017	17	17.9
2018	22	17.9
2019	11	17.9
2020	14	17.6
2021	12	17.6
2022	25	17.6
2023	23	17.6
2024	15	17.6
2025	26	17.6
2026	8	17.6

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

First to last qualifying date each year at Riverslea Tm
Year	First date	Last date
1916	1916-02-06	1916-12-31
1917	1917-01-14	1917-12-16
1918	1918-01-04	1918-12-27
1919	1919-03-02	1919-11-23
1920	1920-01-04	1920-12-07
1921	1921-01-14	1921-12-31
1922	1922-01-01	1922-12-26
1923	1923-01-02	1923-12-28
1924	1924-01-31	1924-12-20
1925	1925-01-22	1925-12-30
1926	1926-01-04	1926-12-31
1927	1927-01-02	1927-12-23
1928	1928-01-07	1928-12-23
1929	1929-01-12	1929-11-22
1930	1930-01-16	1930-07-04
1931	1931-01-17	1931-12-10
1932	1932-01-15	1932-12-22
1935	1935-01-02	1935-12-15
1936	1936-01-07	1936-12-31
1937	1937-01-03	1937-11-08
1938	1938-01-04	1938-12-13
1939	1939-01-03	1939-12-23
1940	1940-01-09	1940-11-13
1941	1941-01-14	1941-12-08
1942	1942-01-18	1942-12-31
1943	1943-01-04	1943-12-30
1944	1944-01-07	1944-11-30
1952	1952-01-09	1952-11-01
1953	1953-01-12	1953-12-28
1955	1955-01-12	1955-12-19
1956	1956-01-04	1956-12-25
1957	1957-01-10	1957-11-02
1958	1958-01-22	1958-12-30
1959	1959-01-07	1959-12-22
1960	1960-01-08	1960-12-27
1961	1961-01-04	1961-12-17
1962	1962-01-07	1962-12-31
1963	1963-01-01	1963-12-15
1964	1964-01-02	1964-12-05
1965	1965-01-05	1965-12-21
1966	1966-01-24	1966-12-19
1967	1967-01-02	1967-12-25
1968	1968-01-06	1968-12-20
1969	1969-03-12	1969-12-31
1970	1970-01-22	1970-12-30
1971	1971-01-08	1971-12-25
1972	1972-01-04	1972-11-28
1973	1973-01-01	1973-12-22
1974	1974-01-01	1974-12-26
1975	1975-01-02	1975-12-25
1976	1976-01-14	1976-12-23
1977	1977-01-18	1977-12-21
1978	1978-01-06	1978-12-27
1979	1979-02-01	1979-12-15
1981	1981-01-02	1981-12-24
1982	1982-01-09	1982-12-10
1983	1983-01-02	1983-12-03
2002	2002-01-01	2002-12-27
2013	2013-01-24	2013-12-01
2014	2014-01-08	2014-12-14
2015	2015-01-16	2015-12-29
2016	2016-01-25	2016-12-11
2017	2017-01-03	2017-12-04
2018	2018-01-02	2018-12-23
2019	2019-01-09	2019-10-19
2020	2020-01-17	2020-12-30
2021	2021-04-07	2021-12-28
2022	2022-01-09	2022-12-11
2023	2023-01-05	2023-12-31
2024	2024-01-11	2024-12-31
2025	2025-01-02	2025-12-26
2026	2026-01-11	2026-05-28

Every Fixed Threshold

Fixed thresholds at Riverslea Tm
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	72	38	1956	8
25 mm (0.98 in): Days with 25 mm or more rain	72	14	1916	3
50 mm (1.97 in): Days with 50 mm or more rain	59	6	1929	1
100 mm (3.94 in): Days with 100 mm or more rain	21	3	1928	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	2013	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1916.

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Data for Riverslea Tm 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 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Riverslea Tm Threshold Days by Year (ASN00039044)

Key Facts for Riverslea Tm Thresholds

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

Every Fixed Threshold

Download the Data

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