Martin Dam Threshold Days by Year (USC00015140)

13 fixed thresholds counted per year at Martin Dam (USC00015140): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Martin Dam Thresholds

Martin Dam: days with 10 mm (0.39 in) or more of precipitation in 64 years, most in 1929 with 56.
Martin Dam: days with 25 mm (0.98 in) or more of precipitation in 64 years, most in 1975 with 31.
Martin Dam: days with 50 mm (1.97 in) or more of precipitation in 60 years, most in 1961 with 9.
Martin Dam: days with a maximum temperature at or above 30 C (86 F) in 35 years, most in 1970 with 126.
13 fixed thresholds have at least one qualifying day at Martin Dam.

Days at or above 30 C (86 F)

35 years with a qualifying day

Days per year at Martin Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 126 in 1970.

Days at or above 30 C (86 F) per year at Martin Dam
Year	Days	Decade average
1955	118	114.6
1956	113	114.6
1957	108	114.6
1958	115	114.6
1959	119	114.6
1960	113	103.1
1961	97	103.1
1962	117	103.1
1963	96	103.1
1964	98	103.1
1965	111	103.1
1966	86	103.1
1968	98	103.1
1969	112	103.1
1970	126	99.1
1971	110	99.1
1972	111	99.1
1973	120	99.1
1974	76	99.1
1975	92	99.1
1976	67	99.1
1977	116	99.1
1978	93	99.1
1979	80	99.1
1980	117	101.4
1981	93	101.4
1983	90	101.4
1984	105	101.4
1985	97	101.4
1986	125	101.4
1987	110	101.4
1988	97	101.4
1989	79	101.4
1990	115	100
1991	85	100

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

First to last qualifying date each year at Martin Dam
Year	First date	Last date
1955	1955-04-16	1955-11-15
1956	1956-04-28	1956-10-01
1957	1957-04-26	1957-09-22
1958	1958-04-23	1958-09-27
1959	1959-05-01	1959-10-13
1960	1960-04-23	1960-10-14
1961	1961-05-05	1961-09-29
1962	1962-05-01	1962-10-15
1963	1963-05-07	1963-10-04
1964	1964-05-10	1964-09-29
1965	1965-04-09	1965-09-23
1966	1966-04-13	1966-09-26
1968	1968-03-20	1968-10-13
1969	1969-04-21	1969-10-27
1970	1970-04-22	1970-10-04
1971	1971-04-11	1971-10-16
1972	1972-04-03	1972-10-18
1973	1973-05-03	1973-10-08
1974	1974-03-09	1974-09-22
1975	1975-04-28	1975-10-14
1976	1976-06-12	1976-10-04
1977	1977-04-17	1977-10-01
1978	1978-04-05	1978-10-13
1979	1979-05-10	1979-09-22
1980	1980-04-24	1980-09-25
1981	1981-04-15	1981-10-07
1983	1983-05-13	1983-10-04
1984	1984-05-06	1984-10-18
1985	1985-04-26	1985-10-12
1986	1986-04-07	1986-10-05
1987	1987-04-20	1987-09-28
1988	1988-04-05	1988-09-26
1989	1989-04-26	1989-10-07
1990	1990-05-03	1990-10-17
1991	1991-05-16	1991-09-19

Every Fixed Threshold

Fixed thresholds at Martin Dam
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	35	126	1970	85
35 C (95 F): Days	33	34	1980	3
90 F (32.2 C): Days	35	90	1980	43
100 F (37.8 C): Days	9	8	1980	3
0 C (32 F): Ice days (max	12	4	1962	3
0 C (32 F): Frost days (min	33	67	1985	39
-10 C (14 F): Days with min	15	6	1977	4
20 C (68 F): Tropical nights (min	33	88	1991	88
25 C (77 F): Days with min	4	2	1980	2
10 mm (0.39 in): Days with 10 mm or more rain	64	56	1929	43
25 mm (0.98 in): Days with 25 mm or more rain	64	31	1975	14
50 mm (1.97 in): Days with 50 mm or more rain	60	9	1961	5
100 mm (3.94 in): Days with 100 mm or more rain	21	2	1948	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1955.

Download the Data

Data for Martin Dam 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).

Martin Dam Threshold Days by Year (USC00015140)

Key Facts for Martin Dam Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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