Laen Threshold Days by Year

3 fixed thresholds counted per year at Laen (ASN00078020): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Laen Thresholds

Laen: days with 10 mm (0.39 in) or more of precipitation in 66 years, most in 1947 with 20.
Laen: days with 25 mm (0.98 in) or more of precipitation in 53 years, most in 1887 with 6.
Laen: days with 50 mm (1.97 in) or more of precipitation in 12 years, most in 1911 with 2.
3 fixed thresholds have at least one qualifying day at Laen.

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

66 years with a qualifying day

Days per year at Laen with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 20 in 1947.

Days with 10 mm (0.39 in) or more of precipitation per year at Laen
Year	Days	Decade average
1882	7	11.5
1883	15	11.5
1884	14	11.5
1885	9	11.5
1886	10	11.5
1887	15	11.5
1888	6	11.5
1889	16	11.5
1890	12	10.8
1891	9	10.8
1892	11	10.8
1899	11	10.8
1900	9	11.5
1901	7	11.5
1902	4	11.5
1903	14	11.5
1904	14	11.5
1905	13	11.5
1906	17	11.5
1907	11	11.5
1908	12	11.5
1909	14	11.5
1910	16	10.5
1911	13	10.5
1912	8	10.5
1913	8	10.5
1914	5	10.5
1915	11	10.5
1916	15	10.5
1917	15	10.5
1918	8	10.5
1919	6	10.5
1920	9	10.2
1921	13	10.2
1922	11	10.2
1923	14	10.2
1924	14	10.2
1925	11	10.2
1926	10	10.2
1927	8	10.2
1928	8	10.2
1929	4	10.2
1930	14	12.5
1931	14	12.5
1932	12	12.5
1933	17	12.5
1934	12	12.5
1935	12	12.5
1936	15	12.5
1937	11	12.5
1938	6	12.5
1939	12	12.5
1940	6	10.8
1941	14	10.8
1942	14	10.8
1943	8	10.8
1944	4	10.8
1945	12	10.8
1946	9	10.8
1947	20	10.8
1948	9	10.8
1949	12	10.8
1950	19	15.3
1951	11	15.3
1952	18	15.3
1953	13	15.3

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

First to last qualifying date each year at Laen
Year	First date	Last date
1882	1882-04-23	1882-11-21
1883	1883-02-28	1883-11-10
1884	1884-01-17	1884-12-10
1885	1885-02-28	1885-12-24
1886	1886-01-07	1886-09-22
1887	1887-02-16	1887-12-31
1888	1888-04-10	1888-10-04
1889	1889-01-01	1889-11-16
1890	1890-03-17	1890-11-24
1891	1891-03-08	1891-11-19
1892	1892-04-18	1892-12-11
1899	1899-01-19	1899-09-10
1900	1900-03-24	1900-08-30
1901	1901-04-03	1901-10-28
1902	1902-03-26	1902-12-19
1903	1903-03-04	1903-12-30
1904	1904-01-02	1904-10-19
1905	1905-01-03	1905-11-12
1906	1906-02-28	1906-11-28
1907	1907-02-06	1907-12-27
1908	1908-02-24	1908-10-16
1909	1909-01-05	1909-08-25
1910	1910-03-06	1910-11-05
1911	1911-02-05	1911-12-11
1912	1912-06-10	1912-12-04
1913	1913-02-14	1913-12-23
1914	1914-03-13	1914-12-14
1915	1915-01-20	1915-10-23
1916	1916-01-05	1916-12-09
1917	1917-01-22	1917-12-31
1918	1918-02-19	1918-08-21
1919	1919-02-17	1919-12-28
1920	1920-05-09	1920-10-11
1921	1921-01-02	1921-12-03
1922	1922-05-02	1922-12-30
1923	1923-05-06	1923-12-16
1924	1924-02-03	1924-11-23
1925	1925-01-13	1925-11-19
1926	1926-04-05	1926-08-29
1927	1927-05-11	1927-12-09
1928	1928-01-20	1928-09-30
1929	1929-02-22	1929-12-28
1930	1930-02-21	1930-12-16
1931	1931-03-14	1931-12-02
1932	1932-02-06	1932-10-12
1933	1933-01-20	1933-12-26
1934	1934-02-18	1934-11-08
1935	1935-03-15	1935-12-03
1936	1936-01-02	1936-12-19
1937	1937-01-19	1937-12-27
1938	1938-01-14	1938-11-28
1939	1939-01-16	1939-11-16
1940	1940-01-06	1940-12-20
1941	1941-01-24	1941-12-08
1942	1942-01-20	1942-11-22
1943	1943-01-22	1943-10-17
1944	1944-04-24	1944-12-21
1945	1945-01-14	1945-11-17
1946	1946-01-18	1946-11-13
1947	1947-02-05	1947-12-23
1948	1948-04-11	1948-12-25
1949	1949-02-20	1949-11-22
1950	1950-02-01	1950-12-20
1951	1951-01-04	1951-10-25
1952	1952-01-05	1952-12-11
1953	1953-01-28	1953-12-07

Every Fixed Threshold

Fixed thresholds at Laen
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	66	20	1947	13
25 mm (0.98 in): Days with 25 mm or more rain	53	6	1887	1
50 mm (1.97 in): Days with 50 mm or more rain	12	2	1911	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1882.

Download the Data

Data for Laen 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).

Laen Threshold Days by Year

Key Facts for Laen Thresholds

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

Every Fixed Threshold

Download the Data

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