Lake Ninan Threshold Days by Year

3 fixed thresholds counted per year at Lake Ninan (ASN00008071): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Lake Ninan Thresholds

Lake Ninan: days with 10 mm (0.39 in) or more of precipitation in 39 years, most in 1917 with 21.
Lake Ninan: days with 25 mm (0.98 in) or more of precipitation in 33 years, most in 1929 with 7.
Lake Ninan: days with 50 mm (1.97 in) or more of precipitation in 6 years, most in 1917 with 2.
3 fixed thresholds have at least one qualifying day at Lake Ninan.

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

39 years with a qualifying day

Days per year at Lake Ninan with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 21 in 1917.

Days with 10 mm (0.39 in) or more of precipitation per year at Lake Ninan
Year	Days	Decade average
1910	20	12
1911	2	12
1912	6	12
1913	10	12
1914	4	12
1915	18	12
1916	11	12
1917	21	12
1918	17	12
1919	11	12
1920	11	10.5
1921	12	10.5
1922	7	10.5
1923	12	10.5
1924	6	10.5
1925	10	10.5
1926	13	10.5
1927	9	10.5
1928	8	10.5
1929	17	10.5
1930	17	11.7
1931	11	11.7
1932	16	11.7
1934	13	11.7
1935	10	11.7
1936	6	11.7
1937	11	11.7
1938	7	11.7
1939	14	11.7
1940	7	10.9
1942	13	10.9
1943	13	10.9
1944	9	10.9
1945	12	10.9
1946	15	10.9
1947	11	10.9
1948	11	10.9
1949	7	10.9
1950	10	10

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

First to last qualifying date each year at Lake Ninan
Year	First date	Last date
1910	1910-02-09	1910-08-28
1911	1911-06-26	1911-09-01
1912	1912-01-20	1912-09-28
1913	1913-06-08	1913-12-20
1914	1914-06-25	1914-12-31
1915	1915-01-08	1915-10-10
1916	1916-01-21	1916-10-05
1917	1917-03-19	1917-10-01
1918	1918-02-16	1918-10-28
1919	1919-04-17	1919-11-02
1920	1920-03-12	1920-09-12
1921	1921-03-22	1921-12-14
1922	1922-02-26	1922-07-14
1923	1923-04-23	1923-12-16
1924	1924-05-14	1924-08-20
1925	1925-01-24	1925-09-24
1926	1926-03-10	1926-11-25
1927	1927-03-15	1927-07-24
1928	1928-04-20	1928-12-30
1929	1929-02-13	1929-11-14
1930	1930-03-26	1930-12-12
1931	1931-04-07	1931-12-27
1932	1932-03-28	1932-10-23
1934	1934-01-01	1934-11-06
1935	1935-01-06	1935-09-10
1936	1936-03-04	1936-08-23
1937	1937-03-03	1937-11-23
1938	1938-03-16	1938-11-23
1939	1939-04-01	1939-11-10
1940	1940-05-14	1940-12-03
1942	1942-01-14	1942-12-21
1943	1943-02-01	1943-09-16
1944	1944-05-18	1944-12-07
1945	1945-03-27	1945-11-13
1946	1946-04-20	1946-11-11
1947	1947-01-18	1947-10-25
1948	1948-03-20	1948-11-15
1949	1949-06-04	1949-09-01
1950	1950-05-08	1950-10-05

Every Fixed Threshold

Fixed thresholds at Lake Ninan
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	39	21	1917	10
25 mm (0.98 in): Days with 25 mm or more rain	33	7	1929	1
50 mm (1.97 in): Days with 50 mm or more rain	6	2	1917	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1910.

Download the Data

Data for Lake Ninan 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

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

Lake Ninan Threshold Days by Year

Key Facts for Lake Ninan Thresholds

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

Every Fixed Threshold

Download the Data

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