Monticello 2E Threshold Days by Year (USC00425805)

17 fixed thresholds counted per year at Monticello 2E (USC00425805): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Monticello 2E Thresholds

Monticello 2E: nights with a minimum temperature at or below 0 C (32 F) in 85 years, most in 1975 with 213.
Monticello 2E: nights with a minimum temperature at or below -10 C (14 F) in 85 years, most in 1979 with 80.
Monticello 2E: days with a maximum temperature at or below 0 C (32 F) in 84 years, most in 1979 with 51.
Monticello 2E: days with a maximum temperature at or above 30 C (86 F) in 83 years, most in 2007 with 54.
17 fixed thresholds have at least one qualifying day at Monticello 2E.

Days at or above 30 C (86 F)

83 years with a qualifying day

Days per year at Monticello 2E with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 54 in 2007.

Days at or above 30 C (86 F) per year at Monticello 2E
Year	Days	Decade average
1903	28	28
1917	2	5.5
1919	9	5.5
1928	11	9
1929	7	9
1930	12	26.3
1931	40	26.3
1932	15	26.3
1933	25	26.3
1934	43	26.3
1935	20	26.3
1936	40	26.3
1937	22	26.3
1938	17	26.3
1939	29	26.3
1940	49	20.2
1941	7	20.2
1942	14	20.2
1943	21	20.2
1944	11	20.2
1945	13	20.2
1946	16	20.2
1947	30	20.2
1948	23	20.2
1949	18	20.2
1950	13	18.4
1952	17	18.4
1953	23	18.4
1954	28	18.4
1955	15	18.4
1956	13	18.4
1957	11	18.4
1958	20	18.4
1959	26	18.4
1960	31	23.4
1961	23	23.4
1962	18	23.4
1963	19	23.4
1964	26	23.4
1965	22	23.4
1966	26	23.4
1967	28	23.4
1968	15	23.4
1969	26	23.4
1970	27	27.8
1971	31	27.8
1972	28	27.8
1973	21	27.8
1974	28	27.8
1975	17	27.8
1976	21	27.8
1977	32	27.8
1978	37	27.8
1979	36	27.8
1980	43	23.3
1981	36	23.3
1982	22	23.3
1983	17	23.3
1984	19	23.3
1985	31	23.3
1986	21	23.3
1987	4	23.3
1988	17	23.3
1990	33	23.3
1991	14	23.3
1992	15	23.3
1993	21	23.3
1994	38	23.3
1995	30	23.3
1996	33	23.3
1997	9	23.3
1998	28	23.3
1999	12	23.3
2000	44	37.1
2001	39	37.1
2003	53	37.1
2004	27	37.1
2005	34	37.1
2006	26	37.1
2007	54	37.1
2008	27	37.1
2009	30	37.1
2010	19	19

For each year, a bar from the first to the last day at Monticello 2E meeting 30 C (86 F).

First to last qualifying date each year at Monticello 2E
Year	First date	Last date
1903	1903-06-21	1903-09-04
1917	1917-07-22	1917-08-08
1919	1919-06-27	1919-09-01
1928	1928-07-09	1928-09-17
1929	1929-06-25	1929-08-13
1930	1930-06-06	1930-08-21
1931	1931-06-23	1931-08-27
1932	1932-06-24	1932-08-17
1933	1933-06-11	1933-08-16
1934	1934-06-11	1934-09-11
1935	1935-06-19	1935-09-18
1936	1936-06-13	1936-08-26
1937	1937-06-20	1937-08-12
1938	1938-07-08	1938-08-23
1939	1939-06-13	1939-08-19
1940	1940-06-13	1940-09-01
1941	1941-07-17	1941-08-06
1942	1942-07-05	1942-09-02
1943	1943-06-26	1943-09-15
1944	1944-07-15	1944-08-17
1945	1945-07-05	1945-09-05
1946	1946-06-30	1946-08-05
1947	1947-06-16	1947-09-02
1948	1948-06-09	1948-09-05
1949	1949-06-16	1949-09-01
1950	1950-06-27	1950-09-03
1952	1952-07-03	1952-08-08
1953	1953-06-22	1953-09-15
1954	1954-06-19	1954-09-15
1955	1955-06-21	1955-08-02
1956	1956-06-10	1956-07-26
1957	1957-06-28	1957-08-04
1958	1958-06-28	1958-09-02
1959	1959-06-12	1959-08-11
1960	1960-06-15	1960-08-21
1961	1961-06-18	1961-08-22
1962	1962-06-25	1962-09-18
1963	1963-06-27	1963-07-31
1964	1964-06-25	1964-08-24
1965	1965-07-04	1965-08-17
1966	1966-07-03	1966-08-17
1967	1967-06-26	1967-09-04
1968	1968-06-18	1968-07-21
1969	1969-07-02	1969-09-07
1970	1970-06-24	1970-08-14
1971	1971-06-18	1971-08-15
1972	1972-06-30	1972-08-13
1973	1973-06-25	1973-08-19
1974	1974-05-27	1974-08-18
1975	1975-06-30	1975-08-10
1976	1976-06-27	1976-09-04
1977	1977-05-31	1977-09-09
1978	1978-06-21	1978-09-05
1979	1979-06-23	1979-09-09
1980	1980-06-09	1980-08-26
1981	1981-06-07	1981-08-07
1982	1982-06-27	1982-08-21
1983	1983-07-05	1983-09-02
1984	1984-05-30	1984-08-13
1985	1985-06-07	1985-08-31
1986	1986-06-16	1986-08-21
1987	1987-07-08	1987-08-01
1988	1988-06-19	1988-08-24
1990	1990-06-04	1990-09-15
1991	1991-07-02	1991-08-30
1992	1992-07-05	1992-08-21
1993	1993-06-14	1993-08-03
1994	1994-06-12	1994-08-27
1995	1995-07-07	1995-09-05
1996	1996-06-04	1996-08-16
1997	1997-07-02	1997-07-26
1998	1998-06-27	1998-08-31
1999	1999-06-24	1999-07-13
2000	2000-05-23	2000-09-16
2001	2001-06-08	2001-08-28
2003	2003-05-27	2003-08-21
2004	2004-06-04	2004-09-03
2005	2005-06-18	2005-08-01
2006	2006-06-03	2006-07-29
2007	2007-06-15	2007-08-27
2008	2008-06-16	2008-08-23
2009	2009-06-30	2009-08-30
2010	2010-06-05	2010-09-04

Every Fixed Threshold

Fixed thresholds at Monticello 2E
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	83	54	2007	19
35 C (95 F): Days	8	5	2005	5
90 F (32.2 C): Days	71	22	2003	8
100 F (37.8 C): Days	1	1	1969	1
0 C (32 F): Ice days (max	84	51	1979	37
0 C (32 F): Frost days (min	85	213	1975	161
-10 C (14 F): Days with min	85	80	1979	54
-20 C (-4 F): Days with min	56	13	1979	5
-30 C (-22 F): Days with min	1	1	1990	1
20 C (68 F): Tropical nights (min	8	13	1903	1
25 C (77 F): Days with min	1	3	1903	3
10 mm (0.39 in): Days with 10 mm or more rain	72	22	1957	8
25 mm (0.98 in): Days with 25 mm or more rain	56	5	1978	2
50 mm (1.97 in): Days with 50 mm or more rain	10	1	1955	1
10 cm (3.9 in): Days with 10 cm or more snowfall	62	17	1979	9
25 cm (9.8 in): Days with 25 cm or more snowfall	32	3	1978	1
50 cm (19.7 in): Days with 50 cm or more snowfall	2	1	1973	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 2E 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).

Monticello 2E Threshold Days by Year (USC00425805)

Key Facts for Monticello 2E Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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