Belvidere Threshold Days by Year

18 fixed thresholds counted per year at Belvidere (USC00280729): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Belvidere Thresholds

Belvidere: days with 10 mm (0.39 in) or more of precipitation in 88 years, most in 1975 with 53.
Belvidere: days with 25 mm (0.98 in) or more of precipitation in 88 years, most in 1902 with 22.
Belvidere: nights with a minimum temperature at or below 0 C (32 F) in 86 years, most in 1966 with 165.
Belvidere: nights with a minimum temperature at or below -10 C (14 F) in 86 years, most in 1904 with 51.
18 fixed thresholds have at least one qualifying day at Belvidere.

Days at or above 30 C (86 F)

85 years with a qualifying day

Days per year at Belvidere with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 72 in 1955.

Days at or above 30 C (86 F) per year at Belvidere
Year	Days	Decade average
1894	50	49
1895	61	49
1896	51	49
1897	39	49
1898	56	49
1899	37	49
1900	63	37.8
1901	51	37.8
1902	16	37.8
1904	22	37.8
1905	30	37.8
1906	42	37.8
1907	37	37.8
1908	46	37.8
1909	33	37.8
1910	29	33.9
1911	47	33.9
1912	38	33.9
1913	39	33.9
1914	27	33.9
1915	34	33.9
1916	35	33.9
1917	33	33.9
1918	31	33.9
1919	26	33.9
1920	9	35.5
1921	30	35.5
1922	34	35.5
1923	28	35.5
1924	16	35.5
1925	54	35.5
1926	40	35.5
1927	34	35.5
1928	49	35.5
1929	61	35.5
1930	68	58.2
1932	65	58.2
1933	62	58.2
1934	52	58.2
1935	51	58.2
1936	66	58.2
1937	60	58.2
1938	40	58.2
1939	60	58.2
1940	44	58.4
1941	65	58.4
1942	53	58.4
1943	68	58.4
1944	68	58.4
1945	52	58.4
1946	52	58.4
1947	59	58.4
1948	53	58.4
1949	70	58.4
1950	44	57.5
1951	52	57.5
1952	66	57.5
1953	48	57.5
1954	62	57.5
1955	72	57.5
1956	54	57.5
1957	69	57.5
1958	51	57.5
1959	57	57.5
1960	18	25.9
1961	36	25.9
1962	24	25.9
1963	18	25.9
1964	27	25.9
1965	29	25.9
1966	47	25.9
1967	14	25.9
1968	30	25.9
1969	16	25.9
1970	28	18.9
1971	20	18.9
1972	18	18.9
1973	25	18.9
1974	15	18.9
1975	17	18.9
1976	17	18.9
1977	22	18.9
1978	12	18.9
1979	15	18.9
1980	35	35

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

First to last qualifying date each year at Belvidere
Year	First date	Last date
1894	1894-05-02	1894-09-22
1895	1895-05-04	1895-09-26
1896	1896-04-15	1896-09-12
1897	1897-04-25	1897-10-16
1898	1898-05-20	1898-09-19
1899	1899-05-01	1899-09-08
1900	1900-05-13	1900-10-06
1901	1901-04-29	1901-09-15
1902	1902-04-22	1902-09-01
1904	1904-05-06	1904-08-07
1905	1905-03-29	1905-10-01
1906	1906-05-13	1906-09-21
1907	1907-05-14	1907-09-17
1908	1908-04-23	1908-10-18
1909	1909-04-19	1909-09-14
1910	1910-06-19	1910-09-06
1911	1911-05-11	1911-08-28
1912	1912-05-21	1912-09-10
1913	1913-05-02	1913-08-18
1914	1914-05-20	1914-09-23
1915	1915-04-20	1915-09-17
1916	1916-07-01	1916-09-14
1917	1917-06-19	1917-08-29
1918	1918-05-06	1918-08-25
1919	1919-05-04	1919-09-08
1920	1920-05-28	1920-07-24
1921	1921-05-22	1921-09-03
1922	1922-05-26	1922-10-06
1923	1923-04-21	1923-08-15
1924	1924-07-12	1924-09-02
1925	1925-04-23	1925-09-13
1926	1926-05-02	1926-10-05
1927	1927-04-20	1927-10-02
1928	1928-05-04	1928-10-12
1929	1929-04-07	1929-09-24
1930	1930-05-02	1930-09-26
1932	1932-05-16	1932-09-21
1933	1933-05-03	1933-09-27
1934	1934-05-05	1934-09-24
1935	1935-04-27	1935-09-25
1936	1936-05-01	1936-09-22
1937	1937-05-22	1937-09-12
1938	1938-04-15	1938-10-17
1939	1939-05-06	1939-10-10
1940	1940-05-14	1940-09-21
1941	1941-04-14	1941-10-06
1942	1942-04-24	1942-09-17
1943	1943-05-08	1943-09-07
1944	1944-05-04	1944-10-07
1945	1945-03-28	1945-09-29
1946	1946-04-23	1946-10-07
1947	1947-05-13	1947-10-21
1948	1948-05-10	1948-09-29
1949	1949-05-04	1949-10-11
1950	1950-06-06	1950-10-02
1951	1951-04-29	1951-10-05
1952	1952-05-28	1952-09-13
1953	1953-05-10	1953-09-30
1954	1954-05-16	1954-10-14
1955	1955-05-05	1955-09-20
1956	1956-04-29	1956-09-23
1957	1957-04-27	1957-09-23
1958	1958-04-20	1958-09-26
1959	1959-05-07	1959-10-06
1960	1960-04-15	1960-09-01
1961	1961-06-06	1961-09-24
1962	1962-04-27	1962-08-30
1963	1963-06-11	1963-07-30
1964	1964-05-10	1964-09-12
1965	1965-05-05	1965-09-23
1966	1966-06-06	1966-09-03
1967	1967-06-10	1967-08-06
1968	1968-06-07	1968-09-26
1969	1969-05-30	1969-09-02
1970	1970-05-10	1970-09-27
1971	1971-05-20	1971-09-10
1972	1972-05-25	1972-09-18
1973	1973-06-09	1973-09-06
1974	1974-04-30	1974-08-15
1975	1975-05-21	1975-10-15
1976	1976-04-18	1976-08-27
1977	1977-04-13	1977-09-03
1978	1978-06-20	1978-08-20
1979	1979-05-10	1979-08-11
1980	1980-05-06	1980-09-23

Every Fixed Threshold

Fixed thresholds at Belvidere
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	85	72	1955	35
35 C (95 F): Days	59	23	1955	3
40 C (104 F): Days	4	2	1936	1
90 F (32.2 C): Days	85	50	1955	15
100 F (37.8 C): Days	20	9	1955	1
0 C (32 F): Ice days (max	85	49	1904	26
0 C (32 F): Frost days (min	86	165	1966	101
-10 C (14 F): Days with min	86	51	1904	29
-20 C (-4 F): Days with min	46	10	1961	4
20 C (68 F): Tropical nights (min	85	38	1949	6
25 C (77 F): Days with min	3	2	1905	2
10 mm (0.39 in): Days with 10 mm or more rain	88	53	1975	33
25 mm (0.98 in): Days with 25 mm or more rain	88	22	1902	6
50 mm (1.97 in): Days with 50 mm or more rain	68	6	1896	2
100 mm (3.94 in): Days with 100 mm or more rain	11	1	1896	1
10 cm (3.9 in): Days with 10 cm or more snowfall	75	7	1966	4
25 cm (9.8 in): Days with 25 cm or more snowfall	29	2	1902	1
50 cm (19.7 in): Days with 50 cm or more snowfall	2	1	1905	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1894.

Download the Data

Data for Belvidere 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).

Belvidere Threshold Days by Year

Key Facts for Belvidere Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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