Toronto Lake Threshold Days by Year (USC00148191)

17 fixed thresholds counted per year at Toronto Lake (USC00148191): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Toronto Lake Thresholds

Toronto Lake: days with 10 mm (0.39 in) or more of precipitation in 39 years, most in 1973 with 45.
Toronto Lake: days with 25 mm (0.98 in) or more of precipitation in 39 years, most in 1973 with 19.
Toronto Lake: days with a maximum temperature at or above 30 C (86 F) in 33 years, most in 1963 with 116.
Toronto Lake: days with a maximum temperature at or above 35 C (95 F) in 33 years, most in 1980 with 68.
17 fixed thresholds have at least one qualifying day at Toronto Lake.

Days at or above 30 C (86 F)

33 years with a qualifying day

Days per year at Toronto Lake with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 116 in 1963.

Days at or above 30 C (86 F) per year at Toronto Lake
Year	Days	Decade average
1960	83	81.3
1961	67	81.3
1962	101	81.3
1963	116	81.3
1965	78	81.3
1966	81	81.3
1967	55	81.3
1968	77	81.3
1969	74	81.3
1970	87	80.9
1971	79	80.9
1972	74	80.9
1973	74	80.9
1974	66	80.9
1975	87	80.9
1976	74	80.9
1977	80	80.9
1978	107	80.9
1979	81	80.9
1980	112	81.9
1981	82	81.9
1982	72	81.9
1983	83	81.9
1985	78	81.9
1986	80	81.9
1987	82	81.9
1988	86	81.9
1989	62	81.9
1990	74	68.8
1991	93	68.8
1992	46	68.8
1993	54	68.8
1994	77	68.8

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

First to last qualifying date each year at Toronto Lake
Year	First date	Last date
1960	1960-04-25	1960-10-12
1961	1961-04-20	1961-09-22
1962	1962-02-13	1962-10-16
1963	1963-04-17	1963-10-20
1965	1965-04-22	1965-10-11
1966	1966-04-01	1966-10-15
1967	1967-03-12	1967-10-05
1968	1968-03-30	1968-10-31
1969	1969-05-29	1969-10-04
1970	1970-04-28	1970-09-22
1971	1971-04-13	1971-09-30
1972	1972-04-12	1972-10-12
1973	1973-04-22	1973-10-04
1974	1974-04-01	1974-09-12
1975	1975-05-19	1975-10-14
1976	1976-06-11	1976-10-03
1977	1977-04-08	1977-10-28
1978	1978-05-24	1978-10-22
1979	1979-05-17	1979-10-21
1980	1980-04-21	1980-10-10
1981	1981-04-13	1981-10-06
1982	1982-05-30	1982-10-06
1983	1983-05-13	1983-10-03
1985	1985-04-04	1985-09-20
1986	1986-04-25	1986-09-29
1987	1987-04-18	1987-09-27
1988	1988-04-05	1988-10-18
1989	1989-04-23	1989-10-15
1990	1990-05-26	1990-09-28
1991	1991-05-13	1991-10-24
1992	1992-06-17	1992-10-14
1993	1993-06-14	1993-09-23
1994	1994-04-19	1994-10-04

Every Fixed Threshold

Fixed thresholds at Toronto Lake
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	33	116	1963	77
35 C (95 F): Days	33	68	1980	9
40 C (104 F): Days	7	20	1980	3
90 F (32.2 C): Days	33	97	1980	34
100 F (37.8 C): Days	25	40	1980	1
110 F (43.3 C): Days	2	1	1980	1
0 C (32 F): Ice days (max	33	44	1978	16
0 C (32 F): Frost days (min	32	127	1969	90
-10 C (14 F): Days with min	32	46	1978	18
-20 C (-4 F): Days with min	20	14	1979	9
20 C (68 F): Tropical nights (min	32	72	1980	44
25 C (77 F): Days with min	11	8	1980	1
10 mm (0.39 in): Days with 10 mm or more rain	39	45	1973	29
25 mm (0.98 in): Days with 25 mm or more rain	39	19	1973	11
50 mm (1.97 in): Days with 50 mm or more rain	33	5	1973	1
100 mm (3.94 in): Days with 100 mm or more rain	5	2	1961	1
10 cm (3.9 in): Days with 10 cm or more snowfall	5	1	1970	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1960.

Download the Data

Data for Toronto Lake 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).

Toronto Lake Threshold Days by Year (USC00148191)

Key Facts for Toronto Lake Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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