El Morro Natl Mon Threshold Days by Year (USC00292785)

14 fixed thresholds counted per year at El Morro Natl Mon (USC00292785): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for El Morro Natl Mon Thresholds

El Morro Natl Mon: days with 10 mm (0.39 in) or more of precipitation in 82 years, most in 1996 with 19.
El Morro Natl Mon: nights with a minimum temperature at or below 0 C (32 F) in 81 years, most in 1945 with 219.
El Morro Natl Mon: nights with a minimum temperature at or below -10 C (14 F) in 81 years, most in 1964 with 79.
El Morro Natl Mon: days with a maximum temperature at or above 30 C (86 F) in 79 years, most in 1980 with 63.
14 fixed thresholds have at least one qualifying day at El Morro Natl Mon.

Days at or above 30 C (86 F)

79 years with a qualifying day

Days per year at El Morro Natl Mon with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 63 in 1980.

Days at or above 30 C (86 F) per year at El Morro Natl Mon
Year	Days	Decade average
1939	36	36
1940	43	35.6
1941	9	35.6
1943	35	35.6
1944	49	35.6
1945	47	35.6
1947	35	35.6
1949	31	35.6
1950	36	38.6
1951	52	38.6
1952	39	38.6
1953	45	38.6
1954	33	38.6
1955	24	38.6
1956	45	38.6
1957	20	38.6
1958	50	38.6
1959	42	38.6
1960	54	31.1
1961	44	31.1
1962	45	31.1
1963	28	31.1
1964	24	31.1
1965	9	31.1
1966	31	31.1
1967	16	31.1
1968	21	31.1
1969	39	31.1
1970	38	38.1
1971	41	38.1
1972	33	38.1
1973	33	38.1
1974	46	38.1
1975	24	38.1
1976	28	38.1
1977	43	38.1
1978	48	38.1
1979	47	38.1
1980	63	35.1
1981	44	35.1
1982	19	35.1
1983	37	35.1
1984	31	35.1
1985	53	35.1
1986	28	35.1
1987	23	35.1
1988	21	35.1
1989	32	35.1
1990	33	27.7
1991	15	27.7
1992	12	27.7
1993	30	27.7
1994	40	27.7
1995	36	27.7
1996	40	27.7
1997	20	27.7
1998	23	27.7
2000	53	38.3
2002	53	38.3
2003	42	38.3
2004	31	38.3
2005	38	38.3
2006	37	38.3
2007	37	38.3
2008	22	38.3
2009	32	38.3
2010	24	37.3
2011	36	37.3
2012	43	37.3
2013	30	37.3
2014	30	37.3
2017	35	37.3
2018	50	37.3
2019	50	37.3
2021	33	44.2
2022	19	44.2
2024	51	44.2
2025	57	44.2
2026	61	44.2

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

First to last qualifying date each year at El Morro Natl Mon
Year	First date	Last date
1939	1939-06-12	1939-09-02
1940	1940-06-12	1940-08-17
1941	1941-07-09	1941-08-03
1943	1943-06-09	1943-08-20
1944	1944-06-06	1944-09-22
1945	1945-06-13	1945-09-11
1947	1947-05-01	1947-09-04
1949	1949-06-15	1949-09-01
1950	1950-06-10	1950-09-02
1951	1951-05-26	1951-09-03
1952	1952-06-08	1952-09-07
1953	1953-06-09	1953-08-31
1954	1954-06-17	1954-09-01
1955	1955-06-07	1955-09-14
1956	1956-05-31	1956-09-19
1957	1957-06-05	1957-08-01
1958	1958-05-27	1958-09-20
1959	1959-06-06	1959-09-09
1960	1960-06-16	1960-09-04
1961	1961-06-08	1961-08-14
1962	1962-05-12	1962-09-19
1963	1963-06-20	1963-07-31
1964	1964-05-24	1964-08-07
1965	1965-06-29	1965-08-27
1966	1966-06-14	1966-08-18
1967	1967-06-26	1967-08-25
1968	1968-06-16	1968-07-22
1969	1969-06-20	1969-08-21
1970	1970-05-20	1970-09-18
1971	1971-06-14	1971-09-12
1972	1972-06-21	1972-08-23
1973	1973-06-08	1973-08-19
1974	1974-05-26	1974-09-10
1975	1975-06-15	1975-08-30
1976	1976-06-19	1976-09-05
1977	1977-05-31	1977-09-26
1978	1978-06-09	1978-09-05
1979	1979-06-21	1979-09-12
1980	1980-06-07	1980-10-01
1981	1981-06-06	1981-08-30
1982	1982-06-24	1982-09-02
1983	1983-06-17	1983-09-16
1984	1984-05-13	1984-08-01
1985	1985-06-06	1985-08-31
1986	1986-06-13	1986-08-22
1987	1987-06-13	1987-08-20
1988	1988-06-09	1988-08-14
1989	1989-05-27	1989-09-02
1990	1990-06-03	1990-09-13
1991	1991-06-18	1991-08-21
1992	1992-07-03	1992-08-20
1993	1993-06-13	1993-09-11
1994	1994-06-03	1994-08-19
1995	1995-06-12	1995-09-05
1996	1996-05-12	1996-08-14
1997	1997-05-31	1997-08-28
1998	1998-06-25	1998-08-24
2000	2000-05-24	2000-09-16
2002	2002-05-30	2002-09-05
2003	2003-05-29	2003-08-11
2004	2004-06-02	2004-08-13
2005	2005-05-20	2005-08-01
2006	2006-05-25	2006-07-26
2007	2007-06-15	2007-08-29
2008	2008-05-20	2008-08-28
2009	2009-06-22	2009-08-31
2010	2010-06-06	2010-07-22
2011	2011-06-02	2011-09-01
2012	2012-05-26	2012-09-07
2013	2013-06-08	2013-09-02
2014	2014-05-29	2014-09-03
2017	2017-06-11	2017-09-05
2018	2018-06-01	2018-08-21
2019	2019-06-14	2019-09-08
2021	2021-06-06	2021-09-10
2022	2022-06-09	2022-09-06
2024	2024-06-06	2024-10-07
2025	2025-06-13	2025-09-12
2026	2026-05-14	2026-09-14

Every Fixed Threshold

Fixed thresholds at El Morro Natl Mon
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	79	63	1980	61
35 C (95 F): Days	32	6	1985	1
90 F (32.2 C): Days	77	30	1980	20
100 F (37.8 C): Days	1	1	1953	1
0 C (32 F): Ice days (max	76	23	2013	3
0 C (32 F): Frost days (min	81	219	1945	118
-10 C (14 F): Days with min	81	79	1964	17
-20 C (-4 F): Days with min	72	19	1964	1
-30 C (-22 F): Days with min	10	3	1971	2
10 mm (0.39 in): Days with 10 mm or more rain	82	19	1996	8
25 mm (0.98 in): Days with 25 mm or more rain	44	5	1977	2
50 mm (1.97 in): Days with 50 mm or more rain	6	1	1972	1
10 cm (3.9 in): Days with 10 cm or more snowfall	66	8	1983	1
25 cm (9.8 in): Days with 25 cm or more snowfall	9	2	1977	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1939.

Download the Data

Data for El Morro Natl Mon 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).

El Morro Natl Mon Threshold Days by Year (USC00292785)

Key Facts for El Morro Natl Mon Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related