Waimanalo 794 Threshold Days by Year

10 fixed thresholds counted per year at Waimanalo 794 (USC00519521): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Waimanalo 794 Thresholds

Waimanalo 794: days with 10 mm (0.39 in) or more of precipitation in 46 years, most in 1963 with 47.
Waimanalo 794: days with 25 mm (0.98 in) or more of precipitation in 46 years, most in 1963 with 28.
Waimanalo 794: days with 50 mm (1.97 in) or more of precipitation in 42 years, most in 1963 with 13.
Waimanalo 794: nights with a minimum temperature at or above 20 C (68 F) in 36 years, most in 1929 with 286.
10 fixed thresholds have at least one qualifying day at Waimanalo 794.

Days at or above 30 C (86 F)

35 years with a qualifying day

Days per year at Waimanalo 794 with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 178 in 1935.

Days at or above 30 C (86 F) per year at Waimanalo 794
Year	Days	Decade average
1907	102	63.3
1908	31	63.3
1909	57	63.3
1910	74	89.7
1911	44	89.7
1912	113	89.7
1913	142	89.7
1914	115	89.7
1915	113	89.7
1916	30	89.7
1917	135	89.7
1918	55	89.7
1919	76	89.7
1920	147	65.9
1921	125	65.9
1922	110	65.9
1923	39	65.9
1924	24	65.9
1925	80	65.9
1927	12	65.9
1928	19	65.9
1929	37	65.9
1930	17	61.9
1931	18	61.9
1932	25	61.9
1933	7	61.9
1934	158	61.9
1935	178	61.9
1936	117	61.9
1937	27	61.9
1938	49	61.9
1939	23	61.9
1940	48	56.5
1941	65	56.5
1950	14	14

For each year, a bar from the first to the last day at Waimanalo 794 meeting 30 C (86 F).

First to last qualifying date each year at Waimanalo 794
Year	First date	Last date
1907	1907-04-16	1907-10-25
1908	1908-02-25	1908-11-13
1909	1909-01-08	1909-11-20
1910	1910-04-13	1910-11-01
1911	1911-02-21	1911-09-13
1912	1912-01-27	1912-10-17
1913	1913-05-14	1913-11-06
1914	1914-02-09	1914-12-08
1915	1915-03-02	1915-10-16
1916	1916-01-23	1916-10-13
1917	1917-04-24	1917-11-20
1918	1918-05-06	1918-11-24
1919	1919-04-07	1919-11-30
1920	1920-04-14	1920-11-05
1921	1921-02-23	1921-09-28
1922	1922-06-06	1922-11-29
1923	1923-05-10	1923-09-12
1924	1924-01-30	1924-12-30
1925	1925-02-28	1925-12-31
1927	1927-07-27	1927-09-20
1928	1928-03-25	1928-10-18
1929	1929-09-02	1929-11-02
1930	1930-07-16	1930-11-04
1931	1931-05-26	1931-10-09
1932	1932-05-24	1932-11-11
1933	1933-08-26	1933-12-26
1934	1934-01-25	1934-12-14
1935	1935-01-07	1935-12-31
1936	1936-01-01	1936-11-30
1937	1937-04-04	1937-09-27
1938	1938-06-30	1938-11-04
1939	1939-07-24	1939-10-21
1940	1940-02-29	1940-12-21
1941	1941-06-04	1941-11-02
1950	1950-08-08	1950-10-14

Every Fixed Threshold

Fixed thresholds at Waimanalo 794
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	35	178	1935	14
35 C (95 F): Days	1	2	1907	2
90 F (32.2 C): Days	20	64	1935	3
20 C (68 F): Tropical nights (min	36	286	1929	245
25 C (77 F): Days with min	15	7	1934	7
10 mm (0.39 in): Days with 10 mm or more rain	46	47	1963	34
25 mm (0.98 in): Days with 25 mm or more rain	46	28	1963	16
50 mm (1.97 in): Days with 50 mm or more rain	42	13	1963	8
100 mm (3.94 in): Days with 100 mm or more rain	27	4	1907	2
200 mm (7.87 in): Days with 200 mm or more rain	6	1	1908	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1907.

Download the Data

Data for Waimanalo 794 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 2026-10-13 (13 October 2026). Threshold counts are computed by this site.

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

Waimanalo 794 Threshold Days by Year

Key Facts for Waimanalo 794 Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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