Charlton Threshold Days by Year

4 fixed thresholds counted per year at Charlton (ASN00048028): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Charlton Thresholds

Charlton: days with 10 mm (0.39 in) or more of precipitation in 79 years, most in 1950 with 32.
Charlton: days with 25 mm (0.98 in) or more of precipitation in 75 years, most in 1950 with 14.
Charlton: days with 50 mm (1.97 in) or more of precipitation in 31 years, most in 1874 with 8.
Charlton: days with 100 mm (3.94 in) or more of precipitation in 4 years, most in 1874 with 2.
4 fixed thresholds have at least one qualifying day at Charlton.

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

79 years with a qualifying day

Days per year at Charlton with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 32 in 1950.

Days with 10 mm (0.39 in) or more of precipitation per year at Charlton
Year	Days	Decade average
1872	17	14.9
1873	16	14.9
1874	16	14.9
1875	10	14.9
1876	11	14.9
1877	12	14.9
1878	16	14.9
1879	21	14.9
1880	13	11.4
1881	10	11.4
1882	13	11.4
1883	8	11.4
1884	7	11.4
1885	14	11.4
1886	13	11.4
1887	14	11.4
1888	5	11.4
1889	17	11.4
1890	22	14.2
1891	19	14.2
1892	8	14.2
1893	18	14.2
1895	10	14.2
1896	15	14.2
1897	14	14.2
1898	11	14.2
1899	11	14.2
1900	10	10.3
1901	7	10.3
1902	4	10.3
1903	10	10.3
1904	9	10.3
1905	12	10.3
1906	13	10.3
1907	10	10.3
1908	11	10.3
1909	17	10.3
1910	10	9.6
1911	14	9.6
1912	7	9.6
1913	10	9.6
1914	9	9.6
1915	6	9.6
1916	14	9.6
1917	15	9.6
1918	7	9.6
1919	4	9.6
1920	14	11.9
1921	24	11.9
1922	3	11.9
1923	7	11.9
1924	14	11.9
1925	18	11.9
1926	13	11.9
1927	10	11.9
1928	11	11.9
1929	5	11.9
1930	14	11.7
1931	20	11.7
1932	6	11.7
1933	12	11.7
1934	15	11.7
1935	4	11.7
1936	16	11.7
1937	6	11.7
1938	8	11.7
1939	16	11.7
1940	5	11
1941	7	11
1942	13	11
1943	9	11
1944	8	11
1945	10	11
1946	7	11
1947	22	11
1948	15	11
1949	14	11
1950	32	20
1951	8	20

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

First to last qualifying date each year at Charlton
Year	First date	Last date
1872	1872-01-22	1872-12-15
1873	1873-01-11	1873-11-27
1874	1874-01-14	1874-09-29
1875	1875-04-16	1875-08-22
1876	1876-01-18	1876-11-04
1877	1877-01-29	1877-12-15
1878	1878-02-22	1878-12-11
1879	1879-02-15	1879-12-28
1880	1880-01-08	1880-09-28
1881	1881-01-11	1881-11-14
1882	1882-02-07	1882-12-05
1883	1883-02-28	1883-10-15
1884	1884-04-23	1884-12-14
1885	1885-01-20	1885-12-23
1886	1886-01-15	1886-11-25
1887	1887-01-21	1887-11-29
1888	1888-02-06	1888-09-22
1889	1889-01-03	1889-12-19
1890	1890-01-11	1890-12-22
1891	1891-01-06	1891-12-01
1892	1892-03-24	1892-10-27
1893	1893-03-02	1893-11-21
1895	1895-01-21	1895-12-06
1896	1896-01-25	1896-12-22
1897	1897-01-09	1897-12-19
1898	1898-01-06	1898-11-04
1899	1899-01-17	1899-12-06
1900	1900-01-20	1900-12-03
1901	1901-03-21	1901-10-27
1902	1902-08-31	1902-12-06
1903	1903-01-27	1903-12-25
1904	1904-01-02	1904-12-18
1905	1905-02-17	1905-07-01
1906	1906-02-01	1906-11-13
1907	1907-01-09	1907-12-28
1908	1908-03-04	1908-12-12
1909	1909-01-20	1909-12-26
1910	1910-01-15	1910-12-18
1911	1911-01-10	1911-12-30
1912	1912-06-09	1912-12-23
1913	1913-01-03	1913-10-28
1914	1914-02-27	1914-12-28
1915	1915-03-27	1915-09-20
1916	1916-04-01	1916-12-10
1917	1917-01-04	1917-12-12
1918	1918-01-30	1918-08-05
1919	1919-02-04	1919-08-25
1920	1920-01-19	1920-12-06
1921	1921-01-03	1921-12-27
1922	1922-02-28	1922-12-12
1923	1923-02-10	1923-12-27
1924	1924-02-15	1924-12-14
1925	1925-01-03	1925-12-30
1926	1926-01-03	1926-12-19
1927	1927-03-30	1927-12-21
1928	1928-01-19	1928-11-05
1929	1929-02-19	1929-11-17
1930	1930-01-24	1930-12-18
1931	1931-01-25	1931-12-08
1932	1932-02-07	1932-08-31
1933	1933-01-27	1933-12-07
1934	1934-02-20	1934-11-22
1935	1935-02-23	1935-09-27
1936	1936-01-06	1936-12-19
1937	1937-02-03	1937-08-17
1938	1938-01-24	1938-12-29
1939	1939-01-26	1939-11-17
1940	1940-02-02	1940-12-02
1941	1941-01-01	1941-03-21
1942	1942-02-11	1942-12-13
1943	1943-01-22	1943-11-14
1944	1944-02-07	1944-08-23
1945	1945-01-31	1945-09-30
1946	1946-01-17	1946-12-28
1947	1947-02-01	1947-12-25
1948	1948-01-13	1948-12-30
1949	1949-01-09	1949-11-18
1950	1950-01-19	1950-11-22
1951	1951-01-15	1951-11-27

Every Fixed Threshold

Fixed thresholds at Charlton
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	79	32	1950	8
25 mm (0.98 in): Days with 25 mm or more rain	75	14	1950	1
50 mm (1.97 in): Days with 50 mm or more rain	31	8	1874	2
100 mm (3.94 in): Days with 100 mm or more rain	4	2	1874	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1872.

Download the Data

Data for Charlton 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Charlton Threshold Days by Year

Key Facts for Charlton Thresholds

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

Every Fixed Threshold

Download the Data

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