Rio Grande City Threshold Days by Year (USC00417622)

17 fixed thresholds counted per year at Rio Grande City (USC00417622): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Rio Grande City Thresholds

Rio Grande City: days with 10 mm (0.39 in) or more of precipitation in 109 years, most in 2007 with 27.
Rio Grande City: days with 25 mm (0.98 in) or more of precipitation in 109 years, most in 1976 with 13.
Rio Grande City: days with 50 mm (1.97 in) or more of precipitation in 92 years, most in 1967 with 6.
Rio Grande City: days with a maximum temperature at or above 30 C (86 F) in 90 years, most in 2025 with 265.
17 fixed thresholds have at least one qualifying day at Rio Grande City.

Days at or above 30 C (86 F)

90 years with a qualifying day

Days per year at Rio Grande City with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 265 in 2025.

Days at or above 30 C (86 F) per year at Rio Grande City
Year	Days	Decade average
1901	236	233
1902	263	233
1903	205	233
1904	234	233
1905	227	233
1928	232	241.5
1929	251	241.5
1930	228	225.7
1931	223	225.7
1932	242	225.7
1933	259	225.7
1934	214	225.7
1936	206	225.7
1937	217	225.7
1938	223	225.7
1939	219	225.7
1940	225	219
1941	187	219
1942	218	219
1947	240	219
1948	225	219
1951	234	225.7
1952	237	225.7
1953	226	225.7
1954	229	225.7
1955	235	225.7
1956	237	225.7
1957	228	225.7
1958	194	225.7
1959	211	225.7
1960	220	211.9
1961	217	211.9
1962	230	211.9
1963	231	211.9
1964	217	211.9
1965	208	211.9
1966	195	211.9
1967	199	211.9
1968	184	211.9
1969	218	211.9
1970	202	212
1971	228	212
1972	216	212
1973	206	212
1974	227	212
1975	214	212
1976	183	212
1977	222	212
1978	203	212
1979	219	212
1980	220	210.4
1982	216	210.4
1983	169	210.4
1984	220	210.4
1985	213	210.4
1986	214	210.4
1987	200	210.4
1988	214	210.4
1989	228	210.4
1991	210	213.8
1992	189	213.8
1993	196	213.8
1994	200	213.8
1995	212	213.8
1996	245	213.8
1997	204	213.8
1998	218	213.8
1999	250	213.8
2000	250	224
2001	224	224
2002	224	224
2003	189	224
2004	197	224
2005	229	224
2006	238	224
2007	229	224
2008	231	224
2009	229	224
2010	216	224.5
2011	231	224.5
2015	217	224.5
2016	244	224.5
2018	212	224.5
2019	227	224.5
2021	248	239.2
2022	238	239.2
2023	228	239.2
2024	240	239.2
2025	265	239.2
2026	216	239.2

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

First to last qualifying date each year at Rio Grande City
Year	First date	Last date
1901	1901-01-26	1901-11-30
1902	1902-01-11	1902-12-07
1903	1903-01-26	1903-12-20
1904	1904-01-21	1904-12-02
1905	1905-01-11	1905-12-08
1928	1928-01-13	1928-12-15
1929	1929-01-20	1929-12-17
1930	1930-01-07	1930-11-29
1931	1931-02-22	1931-12-29
1932	1932-01-04	1932-11-16
1933	1933-01-16	1933-12-26
1934	1934-01-02	1934-12-29
1936	1936-01-15	1936-12-05
1937	1937-01-06	1937-11-30
1938	1938-01-18	1938-12-02
1939	1939-02-13	1939-12-19
1940	1940-01-31	1940-11-30
1941	1941-03-31	1941-11-19
1942	1942-01-26	1942-12-25
1947	1947-01-14	1947-12-09
1948	1948-01-01	1948-12-29
1951	1951-01-02	1951-12-31
1952	1952-01-01	1952-11-18
1953	1953-01-08	1953-12-06
1954	1954-01-21	1954-12-12
1955	1955-01-05	1955-12-25
1956	1956-01-28	1956-12-09
1957	1957-01-09	1957-12-19
1958	1958-01-31	1958-12-05
1959	1959-02-09	1959-12-11
1960	1960-01-12	1960-12-06
1961	1961-02-13	1961-12-05
1962	1962-01-15	1962-11-18
1963	1963-01-11	1963-11-21
1964	1964-03-03	1964-12-31
1965	1965-01-02	1965-11-27
1966	1966-03-03	1966-12-08
1967	1967-01-07	1967-11-26
1968	1968-03-19	1968-12-28
1969	1969-01-09	1969-11-18
1970	1970-01-29	1970-12-23
1971	1971-01-04	1971-12-28
1972	1972-01-21	1972-12-06
1973	1973-01-21	1973-12-31
1974	1974-01-09	1974-12-23
1975	1975-01-08	1975-12-06
1976	1976-02-05	1976-11-12
1977	1977-01-28	1977-12-19
1978	1978-02-26	1978-12-21
1979	1979-02-15	1979-12-12
1980	1980-01-27	1980-12-09
1982	1982-01-20	1982-12-25
1983	1983-02-11	1983-12-11
1984	1984-02-11	1984-12-25
1985	1985-01-01	1985-12-01
1986	1986-01-01	1986-11-19
1987	1987-02-15	1987-12-24
1988	1988-02-29	1988-12-28
1989	1989-01-06	1989-11-28
1991	1991-01-30	1991-12-01
1992	1992-03-04	1992-11-12
1993	1993-01-19	1993-12-10
1994	1994-01-07	1994-12-10
1995	1995-01-11	1995-12-18
1996	1996-01-17	1996-12-30
1997	1997-01-03	1997-12-09
1998	1998-01-05	1998-12-22
1999	1999-01-18	1999-12-11
2000	2000-01-02	2000-11-30
2001	2001-01-29	2001-12-08
2002	2002-01-17	2002-11-11
2003	2003-01-21	2003-11-06
2004	2004-02-04	2004-12-12
2005	2005-01-05	2005-12-28
2006	2006-01-01	2006-11-29
2007	2007-02-20	2007-12-22
2008	2008-01-06	2008-12-27
2009	2009-01-03	2009-11-15
2010	2010-03-09	2010-12-30
2011	2011-01-18	2011-11-30
2015	2015-01-21	2015-12-27
2016	2016-02-01	2016-12-29
2018	2018-02-05	2018-12-01
2019	2019-01-23	2019-12-16
2021	2021-01-01	2021-12-30
2022	2022-01-01	2022-12-14
2023	2023-01-02	2023-11-10
2024	2024-02-03	2024-12-31
2025	2025-01-01	2025-12-29
2026	2026-01-03	2026-10-15

Every Fixed Threshold

Fixed thresholds at Rio Grande City
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	90	265	2025	216
35 C (95 F): Days	90	181	1902	149
40 C (104 F): Days	84	78	1998	24
45 C (113 F): Days	2	1	1998	1
90 F (32.2 C): Days	90	226	1902	202
100 F (37.8 C): Days	90	114	2000	70
110 F (43.3 C): Days	18	4	1998	1
0 C (32 F): Ice days (max	5	2	1951	1
0 C (32 F): Frost days (min	83	28	1968	8
-10 C (14 F): Days with min	1	2	1962	2
20 C (68 F): Tropical nights (min	87	202	1902	157
25 C (77 F): Days with min	85	92	2019	83
10 mm (0.39 in): Days with 10 mm or more rain	109	27	2007	11
25 mm (0.98 in): Days with 25 mm or more rain	109	13	1976	5
50 mm (1.97 in): Days with 50 mm or more rain	92	6	1967	3
100 mm (3.94 in): Days with 100 mm or more rain	22	3	1967	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	1967	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1901.

Download the Data

Data for Rio Grande City 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).

Rio Grande City Threshold Days by Year (USC00417622)

Key Facts for Rio Grande City Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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