Dante Threshold Days by Year (USC00442237)

16 fixed thresholds counted per year at Dante (USC00442237): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Dante Thresholds

Dante: days with a maximum temperature at or above 30 C (86 F) in 37 years, most in 1936 with 84.
Dante: days with a maximum temperature at or below 0 C (32 F) in 36 years, most in 1940 with 20.
Dante: days with a maximum temperature at or above 90 F (32.2 C) in 34 years, most in 1952 with 48.
Dante: days with 10 mm (0.39 in) or more of precipitation in 34 years, most in 1949 with 54.
16 fixed thresholds have at least one qualifying day at Dante.

Days at or above 30 C (86 F)

37 years with a qualifying day

Days per year at Dante with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 84 in 1936.

Days at or above 30 C (86 F) per year at Dante
Year	Days	Decade average
1918	31	42.5
1919	54	42.5
1920	12	30.6
1921	42	30.6
1922	39	30.6
1923	26	30.6
1924	22	30.6
1926	45	30.6
1927	26	30.6
1928	26	30.6
1929	37	30.6
1930	67	53.7
1931	63	53.7
1932	64	53.7
1933	67	53.7
1934	56	53.7
1935	44	53.7
1936	84	53.7
1937	33	53.7
1938	12	53.7
1939	47	53.7
1940	24	40.9
1941	49	40.9
1942	19	40.9
1943	48	40.9
1944	38	40.9
1945	44	40.9
1946	43	40.9
1949	62	40.9
1950	30	67.8
1952	82	67.8
1953	83	67.8
1954	73	67.8
1955	79	67.8
1956	57	67.8
1957	80	67.8
1958	58	67.8

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

First to last qualifying date each year at Dante
Year	First date	Last date
1918	1918-05-28	1918-08-28
1919	1919-04-09	1919-10-03
1920	1920-06-11	1920-09-20
1921	1921-06-03	1921-09-21
1922	1922-05-23	1922-10-29
1923	1923-06-04	1923-10-13
1924	1924-05-07	1924-09-01
1926	1926-05-07	1926-10-04
1927	1927-05-21	1927-10-02
1928	1928-05-04	1928-09-14
1929	1929-03-25	1929-09-29
1930	1930-04-12	1930-09-24
1931	1931-05-18	1931-10-07
1932	1932-05-07	1932-09-22
1933	1933-05-09	1933-10-01
1934	1934-05-05	1934-09-26
1935	1935-06-18	1935-10-13
1936	1936-05-07	1936-09-28
1937	1937-05-26	1937-09-04
1938	1938-05-04	1938-09-06
1939	1939-05-23	1939-10-09
1940	1940-05-07	1940-09-21
1941	1941-04-19	1941-10-07
1942	1942-04-26	1942-09-14
1943	1943-05-06	1943-09-15
1944	1944-06-03	1944-09-05
1945	1945-07-01	1945-10-01
1946	1946-04-03	1946-10-04
1949	1949-05-04	1949-10-08
1950	1950-04-30	1950-09-03
1952	1952-05-31	1952-09-17
1953	1953-05-22	1953-10-01
1954	1954-06-09	1954-09-20
1955	1955-05-04	1955-09-30
1956	1956-05-14	1956-09-06
1957	1957-04-28	1957-09-14
1958	1958-06-01	1958-09-26

Every Fixed Threshold

Fixed thresholds at Dante
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	37	84	1936	58
35 C (95 F): Days	15	14	1952	2
90 F (32.2 C): Days	34	48	1952	9
100 F (37.8 C): Days	3	2	1932	1
0 C (32 F): Ice days (max	36	20	1940	20
0 C (32 F): Frost days (min	32	134	1941	119
-10 C (14 F): Days with min	32	39	1958	39
-20 C (-4 F): Days with min	12	4	1936	4
20 C (68 F): Tropical nights (min	27	19	1958	19
25 C (77 F): Days with min	1	1	1956	1
10 mm (0.39 in): Days with 10 mm or more rain	34	54	1949	49
25 mm (0.98 in): Days with 25 mm or more rain	34	16	1949	10
50 mm (1.97 in): Days with 50 mm or more rain	22	3	1944	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1944	1
10 cm (3.9 in): Days with 10 cm or more snowfall	17	3	1918	1
25 cm (9.8 in): Days with 25 cm or more snowfall	2	2	1936	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1918.

Download the Data

Data for Dante 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).

Dante Threshold Days by Year (USC00442237)

Key Facts for Dante Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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