Monticello Threshold Days by Year (USC00095988)

15 fixed thresholds counted per year at Monticello (USC00095988): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Monticello Thresholds

Monticello: days with 10 mm (0.39 in) or more of precipitation in 107 years, most in 1975 with 53.
Monticello: days with 25 mm (0.98 in) or more of precipitation in 107 years, most in 2018 with 24.
Monticello: days with 50 mm (1.97 in) or more of precipitation in 100 years, most in 2018 with 11.
Monticello: days with a maximum temperature at or above 30 C (86 F) in 98 years, most in 2016 with 161.
15 fixed thresholds have at least one qualifying day at Monticello.

Days at or above 30 C (86 F)

98 years with a qualifying day

Days per year at Monticello with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 161 in 2016.

Days at or above 30 C (86 F) per year at Monticello
Year	Days	Decade average
1903	106	120.9
1904	129	120.9
1905	130	120.9
1906	120	120.9
1907	121	120.9
1908	133	120.9
1909	107	120.9
1910	124	118.6
1911	136	118.6
1912	104	118.6
1913	113	118.6
1914	117	118.6
1915	123	118.6
1916	88	118.6
1917	115	118.6
1918	126	118.6
1919	140	118.6
1920	121	121.9
1921	132	121.9
1922	130	121.9
1923	93	121.9
1924	100	121.9
1925	151	121.9
1926	132	121.9
1927	142	121.9
1928	105	121.9
1929	113	121.9
1930	123	129.9
1931	138	129.9
1932	120	129.9
1933	141	129.9
1934	109	129.9
1935	138	129.9
1936	134	129.9
1937	131	129.9
1938	126	129.9
1939	139	129.9
1940	122	131.5
1941	157	131.5
1942	156	131.5
1943	141	131.5
1944	132	131.5
1945	127	131.5
1946	95	131.5
1948	122	131.5
1950	107	112.3
1951	109	112.3
1954	129	112.3
1955	104	112.3
1961	94	94.6
1962	122	94.6
1963	95	94.6
1964	101	94.6
1965	84	94.6
1966	82	94.6
1967	85	94.6
1968	94	94.6
1969	94	94.6
1970	100	98.7
1971	118	98.7
1975	103	98.7
1976	80	98.7
1978	120	98.7
1979	71	98.7
1980	125	99.8
1981	122	99.8
1982	124	99.8
1983	71	99.8
1984	104	99.8
1985	76	99.8
1988	101	99.8
1989	75	99.8
1990	123	98.4
1991	82	98.4
1995	90	98.4
1996	106	98.4
1997	78	98.4
1998	118	98.4
1999	92	98.4
2000	102	94.8
2001	82	94.8
2002	106	94.8
2003	65	94.8
2004	87	94.8
2005	85	94.8
2006	108	94.8
2007	119	94.8
2008	99	94.8
2010	138	138.5
2011	131	138.5
2012	118	138.5
2016	161	138.5
2018	144	138.5
2019	139	138.5
2020	105	85.8
2021	112	85.8
2023	109	85.8
2026	17	85.8

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

First to last qualifying date each year at Monticello
Year	First date	Last date
1903	1903-04-30	1903-10-07
1904	1904-04-15	1904-10-12
1905	1905-04-02	1905-10-06
1906	1906-04-11	1906-09-23
1907	1907-03-20	1907-09-25
1908	1908-03-16	1908-11-28
1909	1909-04-05	1909-10-04
1910	1910-03-26	1910-10-21
1911	1911-05-09	1911-10-16
1912	1912-05-06	1912-10-12
1913	1913-04-19	1913-10-11
1914	1914-04-17	1914-09-23
1915	1915-04-19	1915-10-03
1916	1916-05-06	1916-10-10
1917	1917-04-19	1917-10-28
1918	1918-03-14	1918-10-07
1919	1919-04-08	1919-10-29
1920	1920-04-17	1920-10-23
1921	1921-03-18	1921-09-29
1922	1922-04-08	1922-10-05
1923	1923-04-22	1923-09-30
1924	1924-04-25	1924-09-22
1925	1925-04-12	1925-10-17
1926	1926-04-30	1926-10-19
1927	1927-03-19	1927-10-30
1928	1928-03-29	1928-10-17
1929	1929-03-24	1929-10-19
1930	1930-04-12	1930-10-16
1931	1931-04-30	1931-10-25
1932	1932-04-04	1932-10-24
1933	1933-04-10	1933-10-14
1934	1934-04-04	1934-10-22
1935	1935-03-21	1935-11-02
1936	1936-04-15	1936-10-23
1937	1937-04-18	1937-10-30
1938	1938-03-22	1938-10-20
1939	1939-03-24	1939-10-27
1940	1940-04-01	1940-10-27
1941	1941-04-14	1941-10-24
1942	1942-04-05	1942-10-19
1943	1943-04-08	1943-11-01
1944	1944-05-11	1944-10-07
1945	1945-03-16	1945-10-13
1946	1946-04-03	1946-09-28
1948	1948-03-20	1948-09-23
1950	1950-04-24	1950-10-15
1951	1951-04-27	1951-10-07
1954	1954-03-25	1954-10-14
1955	1955-04-17	1955-09-30
1961	1961-05-20	1961-11-05
1962	1962-05-01	1962-10-17
1963	1963-04-19	1963-10-28
1964	1964-04-24	1964-10-23
1965	1965-04-10	1965-10-02
1966	1966-05-02	1966-09-28
1967	1967-03-13	1967-10-08
1968	1968-03-20	1968-10-04
1969	1969-05-14	1969-10-14
1970	1970-04-23	1970-10-13
1971	1971-04-18	1971-10-06
1975	1975-05-21	1975-09-22
1976	1976-04-21	1976-09-27
1978	1978-04-06	1978-09-26
1979	1979-06-02	1979-09-09
1980	1980-04-24	1980-10-11
1981	1981-04-13	1981-10-08
1982	1982-05-12	1982-09-21
1983	1983-06-16	1983-09-19
1984	1984-04-26	1984-10-24
1985	1985-04-21	1985-10-22
1988	1988-04-05	1988-09-25
1989	1989-04-25	1989-10-06
1990	1990-04-26	1990-10-10
1991	1991-04-18	1991-10-19
1995	1995-03-23	1995-09-18
1996	1996-05-05	1996-09-24
1997	1997-05-18	1997-09-30
1998	1998-05-14	1998-10-02
1999	1999-04-04	1999-10-04
2000	2000-05-08	2000-09-26
2001	2001-04-11	2001-09-24
2002	2002-03-18	2002-10-13
2003	2003-05-07	2003-09-21
2004	2004-04-26	2004-09-06
2005	2005-05-14	2005-10-05
2006	2006-04-15	2006-10-07
2007	2007-03-25	2007-10-10
2008	2008-05-23	2008-10-02
2010	2010-04-02	2010-09-30
2011	2011-04-08	2011-10-18
2012	2012-03-20	2012-11-04
2016	2016-03-16	2016-11-06
2018	2018-05-10	2018-10-19
2019	2019-05-16	2019-10-11
2020	2020-05-16	2020-09-18
2021	2021-04-14	2021-10-01
2023	2023-04-07	2023-11-11
2026	2026-06-07	2026-06-30

Every Fixed Threshold

Fixed thresholds at Monticello
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	98	161	2016	17
35 C (95 F): Days	96	82	1925	2
40 C (104 F): Days	14	10	1930	3
90 F (32.2 C): Days	98	126	1941	6
100 F (37.8 C): Days	53	35	1925	1
0 C (32 F): Ice days (max	43	5	1982	1
0 C (32 F): Frost days (min	94	109	2010	18
-10 C (14 F): Days with min	54	10	1963	9
20 C (68 F): Tropical nights (min	94	102	1991	11
25 C (77 F): Days with min	14	3	1980	1
10 mm (0.39 in): Days with 10 mm or more rain	107	53	1975	8
25 mm (0.98 in): Days with 25 mm or more rain	107	24	2018	8
50 mm (1.97 in): Days with 50 mm or more rain	100	11	2018	1
100 mm (3.94 in): Days with 100 mm or more rain	22	3	1997	1
10 cm (3.9 in): Days with 10 cm or more snowfall	3	1	1983	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1903.

Download the Data

Data for Monticello 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 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Monticello Threshold Days by Year (USC00095988)

Key Facts for Monticello Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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