Roscoe Threshold Days by Year (USC00417743)

20 fixed thresholds counted per year at Roscoe (USC00417743): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Roscoe Thresholds

Roscoe: days with 10 mm (0.39 in) or more of precipitation in 87 years, most in 1973 with 30.
Roscoe: days with 25 mm (0.98 in) or more of precipitation in 87 years, most in 1986 with 15.
Roscoe: nights with a minimum temperature at or below 0 C (32 F) in 86 years, most in 1948 with 89.
Roscoe: nights with a minimum temperature at or above 20 C (68 F) in 86 years, most in 1980 with 105.
20 fixed thresholds have at least one qualifying day at Roscoe.

Days at or above 30 C (86 F)

85 years with a qualifying day

Days per year at Roscoe with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 173 in 1956.

Days at or above 30 C (86 F) per year at Roscoe
Year	Days	Decade average
1938	139	144
1939	149	144
1940	127	130.1
1943	144	130.1
1944	122	130.1
1945	102	130.1
1946	125	130.1
1947	153	130.1
1948	150	130.1
1949	118	130.1
1950	142	144.9
1951	149	144.9
1952	146	144.9
1953	148	144.9
1954	157	144.9
1955	166	144.9
1956	173	144.9
1957	113	144.9
1958	115	144.9
1959	140	144.9
1960	154	133.7
1961	128	133.7
1962	141	133.7
1963	160	133.7
1964	136	133.7
1965	133	133.7
1966	118	133.7
1967	130	133.7
1968	124	133.7
1969	113	133.7
1970	128	128.5
1971	116	128.5
1972	139	128.5
1973	121	128.5
1974	133	128.5
1975	130	128.5
1976	104	128.5
1977	135	128.5
1978	145	128.5
1979	134	128.5
1980	131	124.5
1981	131	124.5
1982	129	124.5
1983	142	124.5
1984	132	124.5
1985	118	124.5
1986	117	124.5
1987	102	124.5
1988	120	124.5
1989	123	124.5
1990	111	125.3
1991	126	125.3
1992	99	125.3
1993	126	125.3
1994	128	125.3
1995	128	125.3
1996	135	125.3
1997	114	125.3
1998	156	125.3
1999	130	125.3
2000	144	123.1
2001	120	123.1
2002	125	123.1
2003	133	123.1
2004	109	123.1
2005	126	123.1
2006	137	123.1
2007	104	123.1
2008	111	123.1
2009	122	123.1
2010	118	132.9
2011	162	132.9
2012	145	132.9
2013	139	132.9
2014	124	132.9
2015	134	132.9
2016	119	132.9
2017	122	132.9
2018	133	132.9
2021	129	148
2022	158	148
2023	141	148
2024	149	148
2025	151	148
2026	160	148

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

First to last qualifying date each year at Roscoe
Year	First date	Last date
1938	1938-03-20	1938-10-18
1939	1939-03-14	1939-10-26
1940	1940-02-29	1940-10-22
1943	1943-01-23	1943-10-29
1944	1944-04-01	1944-10-02
1945	1945-05-01	1945-09-27
1946	1946-03-29	1946-10-23
1947	1947-04-04	1947-10-22
1948	1948-04-06	1948-10-16
1949	1949-04-08	1949-11-28
1950	1950-03-25	1950-11-08
1951	1951-02-12	1951-10-21
1952	1952-01-25	1952-11-01
1953	1953-03-20	1953-10-11
1954	1954-03-09	1954-12-04
1955	1955-03-04	1955-11-05
1956	1956-02-24	1956-10-14
1957	1957-04-07	1957-10-07
1958	1958-04-23	1958-10-09
1959	1959-03-23	1959-10-23
1960	1960-03-22	1960-10-27
1961	1961-04-04	1961-10-08
1962	1962-02-11	1962-10-19
1963	1963-03-17	1963-10-13
1964	1964-04-12	1964-10-17
1965	1965-04-14	1965-11-25
1966	1966-03-17	1966-10-13
1967	1967-03-03	1967-10-09
1968	1968-05-02	1968-10-30
1969	1969-04-07	1969-10-11
1970	1970-04-08	1970-11-26
1971	1971-03-13	1971-09-16
1972	1972-02-21	1972-10-18
1973	1973-05-08	1973-11-01
1974	1974-03-02	1974-09-12
1975	1975-03-20	1975-10-13
1976	1976-02-09	1976-10-03
1977	1977-03-14	1977-10-29
1978	1978-03-20	1978-10-12
1979	1979-02-14	1979-10-21
1980	1980-04-07	1980-11-07
1981	1981-04-07	1981-10-14
1982	1982-03-12	1982-10-30
1983	1983-03-31	1983-10-07
1984	1984-04-09	1984-09-24
1985	1985-04-03	1985-09-22
1986	1986-02-19	1986-09-27
1987	1987-04-11	1987-10-30
1988	1988-03-10	1988-10-27
1989	1989-03-11	1989-10-26
1990	1990-04-15	1990-09-27
1991	1991-03-06	1991-10-18
1992	1992-04-11	1992-10-31
1993	1993-03-09	1993-10-17
1994	1994-03-19	1994-10-17
1995	1995-03-19	1995-10-26
1996	1996-02-18	1996-11-20
1997	1997-03-13	1997-10-19
1998	1998-03-24	1998-10-11
1999	1999-04-08	1999-10-16
2000	2000-03-29	2000-10-06
2001	2001-04-03	2001-10-24
2002	2002-03-14	2002-10-07
2003	2003-03-13	2003-10-25
2004	2004-03-19	2004-10-23
2005	2005-04-05	2005-10-20
2006	2006-03-01	2006-11-10
2007	2007-05-05	2007-10-22
2008	2008-03-27	2008-10-05
2009	2009-02-25	2009-10-15
2010	2010-04-01	2010-09-23
2011	2011-03-18	2011-10-26
2012	2012-03-25	2012-10-22
2013	2013-03-16	2013-10-12
2014	2014-02-20	2014-10-28
2015	2015-03-25	2015-10-16
2016	2016-04-05	2016-11-02
2017	2017-02-12	2017-11-06
2018	2018-03-11	2018-10-05
2021	2021-04-07	2021-10-27
2022	2022-03-27	2022-10-23
2023	2023-02-22	2023-11-09
2024	2024-02-22	2024-10-31
2025	2025-02-04	2025-10-24
2026	2026-03-01	2026-10-14

Every Fixed Threshold

Fixed thresholds at Roscoe
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	85	173	1956	160
35 C (95 F): Days	85	114	2011	96
40 C (104 F): Days	52	31	2011	9
45 C (113 F): Days	1	1	1994	1
90 F (32.2 C): Days	85	152	1956	132
100 F (37.8 C): Days	80	81	2011	39
110 F (43.3 C): Days	7	3	1994	1
0 C (32 F): Ice days (max	78	14	2014	3
0 C (32 F): Frost days (min	86	89	1948	28
-10 C (14 F): Days with min	74	15	2014	5
-20 C (-4 F): Days with min	3	2	1947	1
20 C (68 F): Tropical nights (min	86	105	1980	123
25 C (77 F): Days with min	46	28	1980	5
10 mm (0.39 in): Days with 10 mm or more rain	87	30	1973	14
25 mm (0.98 in): Days with 25 mm or more rain	87	15	1986	5
50 mm (1.97 in): Days with 50 mm or more rain	66	5	1957	1
100 mm (3.94 in): Days with 100 mm or more rain	10	1	1944	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	1980	1
10 cm (3.9 in): Days with 10 cm or more snowfall	28	4	1973	2
25 cm (9.8 in): Days with 25 cm or more snowfall	1	1	1980	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1938.

Download the Data

Data for Roscoe 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).

Roscoe Threshold Days by Year (USC00417743)

Key Facts for Roscoe Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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