Aneroid Threshold Days by Year (CA004020160)

18 fixed thresholds counted per year at Aneroid (CA004020160): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Aneroid Thresholds

Aneroid: days with a maximum temperature at or above 30 C (86 F) in 60 years, most in 1961 with 49.
Aneroid: days with a maximum temperature at or above 90 F (32.2 C) in 60 years, most in 1936 with 35.
Aneroid: days with a maximum temperature at or below 0 C (32 F) in 60 years, most in 1970 with 115.
Aneroid: nights with a minimum temperature at or below 0 C (32 F) in 60 years, most in 1925 with 244.
18 fixed thresholds have at least one qualifying day at Aneroid.

Days at or above 30 C (86 F)

60 years with a qualifying day

Days per year at Aneroid with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 49 in 1961.

Days at or above 30 C (86 F) per year at Aneroid
Year	Days	Decade average
1922	21	22.6
1923	22	22.6
1924	11	22.6
1925	47	22.6
1926	25	22.6
1927	10	22.6
1928	12	22.6
1929	33	22.6
1930	31	33
1931	36	33
1932	21	33
1933	37	33
1934	35	33
1935	23	33
1936	43	33
1937	39	33
1938	29	33
1939	36	33
1940	32	25.4
1941	16	25.4
1942	13	25.4
1943	30	25.4
1944	15	25.4
1945	26	25.4
1946	33	25.4
1947	28	25.4
1948	28	25.4
1949	33	25.4
1950	18	21.5
1951	19	21.5
1952	14	21.5
1953	24	21.5
1954	12	21.5
1955	23	21.5
1956	27	21.5
1957	24	21.5
1958	30	21.5
1959	24	21.5
1960	30	31.1
1961	49	31.1
1963	28	31.1
1964	30	31.1
1966	26	31.1
1967	40	31.1
1968	20	31.1
1969	26	31.1
1970	36	26.5
1971	33	26.5
1972	21	26.5
1973	27	26.5
1974	21	26.5
1975	18	26.5
1976	26	26.5
1977	22	26.5
1978	26	26.5
1979	35	26.5
1980	31	33.3
1981	40	33.3
1982	20	33.3
1983	42	33.3

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

First to last qualifying date each year at Aneroid
Year	First date	Last date
1922	1922-05-25	1922-09-28
1923	1923-05-25	1923-09-17
1924	1924-07-02	1924-09-02
1925	1925-05-20	1925-09-03
1926	1926-07-05	1926-08-23
1927	1927-07-24	1927-09-06
1928	1928-05-06	1928-09-17
1929	1929-05-24	1929-08-31
1930	1930-06-26	1930-08-24
1931	1931-05-13	1931-09-06
1932	1932-05-13	1932-09-07
1933	1933-05-30	1933-08-30
1934	1934-05-15	1934-10-10
1935	1935-06-28	1935-09-14
1936	1936-05-26	1936-09-21
1937	1937-06-16	1937-09-17
1938	1938-05-27	1938-09-24
1939	1939-04-29	1939-09-21
1940	1940-06-13	1940-09-13
1941	1941-05-12	1941-08-22
1942	1942-07-07	1942-10-11
1943	1943-07-03	1943-10-07
1944	1944-05-29	1944-09-07
1945	1945-06-21	1945-09-04
1946	1946-05-26	1946-09-15
1947	1947-07-02	1947-09-12
1948	1948-05-19	1948-10-05
1949	1949-04-29	1949-09-24
1950	1950-07-07	1950-09-07
1951	1951-05-22	1951-08-05
1952	1952-04-28	1952-09-26
1953	1953-05-06	1953-09-08
1954	1954-05-19	1954-08-30
1955	1955-06-14	1955-09-14
1956	1956-05-19	1956-09-26
1957	1957-07-06	1957-10-01
1958	1958-05-11	1958-09-12
1959	1959-05-16	1959-08-17
1960	1960-05-12	1960-09-04
1961	1961-05-29	1961-08-29
1963	1963-05-30	1963-09-30
1964	1964-05-17	1964-09-17
1966	1966-05-26	1966-09-18
1967	1967-06-26	1967-09-29
1968	1968-06-02	1968-09-11
1969	1969-06-04	1969-09-13
1970	1970-06-03	1970-09-04
1971	1971-05-13	1971-09-11
1972	1972-05-17	1972-08-29
1973	1973-06-13	1973-09-29
1974	1974-04-25	1974-08-06
1975	1975-06-24	1975-08-06
1976	1976-05-13	1976-09-17
1977	1977-04-25	1977-08-24
1978	1978-05-15	1978-09-10
1979	1979-06-12	1979-10-04
1980	1980-04-20	1980-10-08
1981	1981-06-26	1981-09-19
1982	1982-06-21	1982-09-09
1983	1983-06-09	1983-09-26

Every Fixed Threshold

Fixed thresholds at Aneroid
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	60	49	1961	42
35 C (95 F): Days	55	21	1936	10
40 C (104 F): Days	6	2	1931	1
90 F (32.2 C): Days	60	35	1936	22
100 F (37.8 C): Days	27	6	1931	5
110 F (43.3 C): Days	1	1	1931	1
0 C (32 F): Ice days (max	60	115	1970	79
0 C (32 F): Frost days (min	60	244	1925	204
-10 C (14 F): Days with min	60	123	1950	81
-20 C (-4 F): Days with min	60	69	1978	32
-30 C (-22 F): Days with min	59	27	1936	10
-40 C (-40 F): Days with min	20	6	1936	3
20 C (68 F): Tropical nights (min	15	4	1923	2
10 mm (0.39 in): Days with 10 mm or more rain	55	22	1942	5
25 mm (0.98 in): Days with 25 mm or more rain	46	4	1923	3
50 mm (1.97 in): Days with 50 mm or more rain	6	2	1923	1
10 cm (3.9 in): Days with 10 cm or more snowfall	42	5	1954	1
25 cm (9.8 in): Days with 25 cm or more snowfall	3	1	1940	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1922.

Download the Data

Data for Aneroid 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Aneroid Threshold Days by Year (CA004020160)

Key Facts for Aneroid Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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