Mathias Threshold Days by Year

17 fixed thresholds counted per year at Mathias (USC00465739): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mathias Thresholds

Mathias: days with 10 mm (0.39 in) or more of precipitation in 45 years, most in 1996 with 52.
Mathias: days with 25 mm (0.98 in) or more of precipitation in 45 years, most in 1979 with 15.
Mathias: days with a maximum temperature at or above 30 C (86 F) in 43 years, most in 1953 with 63.
Mathias: days with a maximum temperature at or below 0 C (32 F) in 43 years, most in 1958 with 36.
17 fixed thresholds have at least one qualifying day at Mathias.

Days at or above 30 C (86 F)

43 years with a qualifying day

Days per year at Mathias with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 63 in 1953.

Days at or above 30 C (86 F) per year at Mathias
Year	Days	Decade average
1953	63	41
1954	38	41
1955	41	41
1956	35	41
1957	45	41
1958	25	41
1959	40	41
1960	26	35.4
1961	31	35.4
1962	27	35.4
1963	27	35.4
1964	54	35.4
1965	51	35.4
1966	52	35.4
1967	8	35.4
1968	42	35.4
1969	36	35.4
1970	31	26.2
1971	19	26.2
1972	19	26.2
1973	32	26.2
1974	19	26.2
1975	19	26.2
1976	28	26.2
1977	48	26.2
1978	33	26.2
1979	14	26.2
1980	42	35.7
1981	24	35.7
1982	10	35.7
1983	49	35.7
1984	28	35.7
1985	27	35.7
1986	46	35.7
1987	57	35.7
1988	54	35.7
1989	20	35.7
1990	28	36.5
1991	53	36.5
1992	19	36.5
1996	25	36.5
1997	39	36.5
1998	55	36.5

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

First to last qualifying date each year at Mathias
Year	First date	Last date
1953	1953-05-11	1953-09-30
1954	1954-06-12	1954-10-12
1955	1955-05-04	1955-09-16
1956	1956-04-28	1956-09-13
1957	1957-04-27	1957-09-15
1958	1958-06-09	1958-09-26
1959	1959-04-08	1959-10-04
1960	1960-04-23	1960-09-04
1961	1961-06-01	1961-09-25
1962	1962-05-14	1962-09-13
1963	1963-04-03	1963-10-07
1964	1964-05-19	1964-09-17
1965	1965-05-03	1965-09-22
1966	1966-05-08	1966-09-04
1967	1967-06-12	1967-08-03
1968	1968-06-06	1968-09-04
1969	1969-04-27	1969-09-01
1970	1970-05-22	1970-09-26
1971	1971-05-18	1971-09-10
1972	1972-06-15	1972-09-26
1973	1973-06-04	1973-09-05
1974	1974-04-29	1974-08-29
1975	1975-05-20	1975-08-30
1976	1976-04-17	1976-09-09
1977	1977-05-06	1977-09-18
1978	1978-06-02	1978-09-21
1979	1979-05-09	1979-08-10
1980	1980-06-27	1980-09-22
1981	1981-04-28	1981-08-16
1982	1982-06-29	1982-08-04
1983	1983-06-24	1983-09-20
1984	1984-05-22	1984-09-23
1985	1985-05-11	1985-09-10
1986	1986-05-05	1986-10-01
1987	1987-05-17	1987-08-27
1988	1988-05-30	1988-08-28
1989	1989-05-26	1989-09-10
1990	1990-04-26	1990-09-06
1991	1991-05-12	1991-10-02
1992	1992-05-02	1992-08-27
1996	1996-05-19	1996-08-24
1997	1997-05-19	1997-10-07
1998	1998-05-17	1998-10-01

Every Fixed Threshold

Fixed thresholds at Mathias
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	43	63	1953	55
35 C (95 F): Days	21	14	1953	2
40 C (104 F): Days	1	1	1988	1
90 F (32.2 C): Days	42	38	1953	17
100 F (37.8 C): Days	2	3	1988	3
0 C (32 F): Ice days (max	43	36	1958	11
0 C (32 F): Frost days (min	43	166	1960	149
-10 C (14 F): Days with min	43	58	1960	18
-20 C (-4 F): Days with min	31	8	1989	2
20 C (68 F): Tropical nights (min	18	6	1977	2
10 mm (0.39 in): Days with 10 mm or more rain	45	52	1996	25
25 mm (0.98 in): Days with 25 mm or more rain	45	15	1979	8
50 mm (1.97 in): Days with 50 mm or more rain	23	4	1972	1
100 mm (3.94 in): Days with 100 mm or more rain	4	1	1954	1
10 cm (3.9 in): Days with 10 cm or more snowfall	40	8	1961	4
25 cm (9.8 in): Days with 25 cm or more snowfall	15	3	1998	3
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	1962	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1953.

Download the Data

Data for Mathias 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Mathias Threshold Days by Year

Key Facts for Mathias Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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