Simcoe Threshold Days by Year (CA006137735)

19 fixed thresholds counted per year at Simcoe (CA006137735): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Simcoe Thresholds

Simcoe: days with 10 mm (0.39 in) or more of precipitation in 56 years, most in 1950 with 44.
Simcoe: days with 10 cm (3.9 in) or more of snowfall in 55 years, most in 1940 with 11.
Simcoe: days with 25 mm (0.98 in) or more of precipitation in 53 years, most in 1957 with 16.
Simcoe: days with a maximum temperature at or above 30 C (86 F) in 37 years, most in 1933 with 42.
19 fixed thresholds have at least one qualifying day at Simcoe.

Days at or above 30 C (86 F)

37 years with a qualifying day

Days per year at Simcoe with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 42 in 1933.

Days at or above 30 C (86 F) per year at Simcoe
Year	Days	Decade average
1921	35	20.8
1922	20	20.8
1923	27	20.8
1924	11	20.8
1925	24	20.8
1926	14	20.8
1927	14	20.8
1928	16	20.8
1929	26	20.8
1930	36	29.2
1931	32	29.2
1932	17	29.2
1933	42	29.2
1934	32	29.2
1935	25	29.2
1936	39	29.2
1937	23	29.2
1938	21	29.2
1939	25	29.2
1940	21	25.1
1941	27	25.1
1945	17	25.1
1946	26	25.1
1947	27	25.1
1948	21	25.1
1949	37	25.1
1950	9	16.4
1951	9	16.4
1952	30	16.4
1953	20	16.4
1954	12	16.4
1955	41	16.4
1956	7	16.4
1957	9	16.4
1958	5	16.4
1959	22	16.4
1960	11	11

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

First to last qualifying date each year at Simcoe
Year	First date	Last date
1921	1921-05-21	1921-09-09
1922	1922-06-06	1922-09-10
1923	1923-06-01	1923-08-31
1924	1924-06-20	1924-08-31
1925	1925-06-01	1925-09-11
1926	1926-05-31	1926-08-13
1927	1927-05-22	1927-09-15
1928	1928-06-13	1928-09-11
1929	1929-05-29	1929-09-05
1930	1930-05-07	1930-09-14
1931	1931-05-28	1931-09-22
1932	1932-06-17	1932-09-13
1933	1933-06-08	1933-09-09
1934	1934-05-20	1934-09-25
1935	1935-05-26	1935-09-18
1936	1936-05-07	1936-09-23
1937	1937-05-31	1937-09-03
1938	1938-06-21	1938-08-20
1939	1939-05-06	1939-09-16
1940	1940-05-22	1940-08-18
1941	1941-05-27	1941-09-16
1945	1945-06-14	1945-09-08
1946	1946-06-24	1946-09-27
1947	1947-06-10	1947-09-10
1948	1948-06-04	1948-09-05
1949	1949-05-05	1949-08-27
1950	1950-06-08	1950-08-28
1951	1951-07-16	1951-10-05
1952	1952-06-15	1952-09-13
1953	1953-06-12	1953-09-04
1954	1954-06-12	1954-09-05
1955	1955-06-06	1955-09-19
1956	1956-06-12	1956-07-27
1957	1957-06-17	1957-08-03
1958	1958-07-01	1958-08-03
1959	1959-06-08	1959-09-09
1960	1960-06-28	1960-09-08

Every Fixed Threshold

Fixed thresholds at Simcoe
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	37	42	1933	11
35 C (95 F): Days	16	9	1933	3
40 C (104 F): Days	1	1	1936	1
90 F (32.2 C): Days	33	21	1933	6
100 F (37.8 C): Days	2	6	1936	6
0 C (32 F): Ice days (max	37	85	1960	85
0 C (32 F): Frost days (min	37	183	1925	155
-10 C (14 F): Days with min	37	68	1945	59
-20 C (-4 F): Days with min	31	14	1934	10
-30 C (-22 F): Days with min	2	2	1934	1
20 C (68 F): Tropical nights (min	36	19	1921	2
25 C (77 F): Days with min	4	2	1937	2
10 mm (0.39 in): Days with 10 mm or more rain	56	44	1950	40
25 mm (0.98 in): Days with 25 mm or more rain	53	16	1957	6
50 mm (1.97 in): Days with 50 mm or more rain	25	4	1937	1
100 mm (3.94 in): Days with 100 mm or more rain	3	1	1945	1
10 cm (3.9 in): Days with 10 cm or more snowfall	55	11	1940	10
25 cm (9.8 in): Days with 25 cm or more snowfall	20	2	1950	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	0	n/a	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1921.

Download the Data

Data for Simcoe 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).

Simcoe Threshold Days by Year (CA006137735)

Key Facts for Simcoe Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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