Ashtabula Threshold Days by Year

14 fixed thresholds counted per year at Ashtabula (USC00330264): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ashtabula Thresholds

Ashtabula: days with 10 mm (0.39 in) or more of precipitation in 42 years, most in 1990 with 53.
Ashtabula: days with 25 mm (0.98 in) or more of precipitation in 42 years, most in 1990 with 14.
Ashtabula: days with a maximum temperature at or above 30 C (86 F) in 38 years, most in 1955 with 52.
Ashtabula: days with a maximum temperature at or below 0 C (32 F) in 38 years, most in 1977 with 70.
14 fixed thresholds have at least one qualifying day at Ashtabula.

Days at or above 30 C (86 F)

38 years with a qualifying day

Days per year at Ashtabula with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 52 in 1955.

Days at or above 30 C (86 F) per year at Ashtabula
Year	Days	Decade average
1952	38	29.5
1953	29	29.5
1954	23	29.5
1955	52	29.5
1956	20	29.5
1957	22	29.5
1958	10	29.5
1959	42	29.5
1960	17	20.8
1961	20	20.8
1962	30	20.8
1963	18	20.8
1964	29	20.8
1965	14	20.8
1966	24	20.8
1967	12	20.8
1968	21	20.8
1969	23	20.8
1970	30	20.9
1971	25	20.9
1972	18	20.9
1973	32	20.9
1974	14	20.9
1975	18	20.9
1976	10	20.9
1977	19	20.9
1978	24	20.9
1979	19	20.9
1980	24	18.7
1981	15	18.7
1982	7	18.7
1983	37	18.7
1984	21	18.7
1989	8	18.7
1990	10	17
1991	25	17
1993	20	17
1994	13	17

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

First to last qualifying date each year at Ashtabula
Year	First date	Last date
1952	1952-06-06	1952-10-01
1953	1953-06-05	1953-10-03
1954	1954-06-10	1954-09-29
1955	1955-05-03	1955-09-19
1956	1956-06-12	1956-09-05
1957	1957-06-13	1957-09-03
1958	1958-06-05	1958-09-15
1959	1959-05-20	1959-09-28
1960	1960-06-04	1960-09-08
1961	1961-06-12	1961-09-13
1962	1962-05-14	1962-09-13
1963	1963-06-26	1963-10-07
1964	1964-05-23	1964-09-11
1965	1965-06-29	1965-09-23
1966	1966-05-28	1966-09-03
1967	1967-05-28	1967-08-03
1968	1968-06-08	1968-09-05
1969	1969-05-30	1969-09-07
1970	1970-05-01	1970-09-25
1971	1971-05-19	1971-09-09
1972	1972-06-15	1972-09-01
1973	1973-06-11	1973-09-28
1974	1974-05-15	1974-08-22
1975	1975-05-26	1975-08-14
1976	1976-06-09	1976-07-29
1977	1977-05-21	1977-09-02
1978	1978-05-30	1978-09-21
1979	1979-05-09	1979-09-06
1980	1980-06-24	1980-09-22
1981	1981-06-16	1981-09-14
1982	1982-05-07	1982-09-14
1983	1983-06-12	1983-09-20
1984	1984-06-06	1984-09-14
1989	1989-06-27	1989-09-09
1990	1990-04-28	1990-08-29
1991	1991-05-17	1991-09-17
1993	1993-06-19	1993-09-15
1994	1994-06-01	1994-07-23

Every Fixed Threshold

Fixed thresholds at Ashtabula
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	38	52	1955	13
35 C (95 F): Days	11	5	1952	2
90 F (32.2 C): Days	37	25	1955	2
0 C (32 F): Ice days (max	38	70	1977	52
0 C (32 F): Frost days (min	37	144	1976	112
-10 C (14 F): Days with min	37	51	1977	34
-20 C (-4 F): Days with min	19	8	1977	6
20 C (68 F): Tropical nights (min	37	33	1959	12
10 mm (0.39 in): Days with 10 mm or more rain	42	53	1990	40
25 mm (0.98 in): Days with 25 mm or more rain	42	14	1990	9
50 mm (1.97 in): Days with 50 mm or more rain	27	4	1981	1
100 mm (3.94 in): Days with 100 mm or more rain	3	1	1960	1
10 cm (3.9 in): Days with 10 cm or more snowfall	19	7	1981	2
25 cm (9.8 in): Days with 25 cm or more snowfall	5	1	1971	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1952.

Download the Data

Data for Ashtabula 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

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

Ashtabula Threshold Days by Year

Key Facts for Ashtabula Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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