Gravenhurst Threshold Days by Year (CA006113000)

16 fixed thresholds counted per year at Gravenhurst (CA006113000): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Gravenhurst Thresholds

Gravenhurst: days with 10 cm (3.9 in) or more of snowfall in 47 years, most in 1871 with 15.
Gravenhurst: days with 10 mm (0.39 in) or more of precipitation in 46 years, most in 1878 with 45.
Gravenhurst: days with 25 mm (0.98 in) or more of precipitation in 46 years, most in 1880 with 8.
Gravenhurst: days with a maximum temperature at or below 0 C (32 F) in 43 years, most in 1879 with 110.
16 fixed thresholds have at least one qualifying day at Gravenhurst.

Days at or above 30 C (86 F)

42 years with a qualifying day

Days per year at Gravenhurst with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 27 in 1901.

Days at or above 30 C (86 F) per year at Gravenhurst
Year	Days	Decade average
1876	21	12
1877	6	12
1878	12	12
1879	9	12
1880	11	10.1
1881	15	10.1
1882	8	10.1
1883	1	10.1
1884	20	10.1
1885	3	10.1
1886	6	10.1
1887	22	10.1
1888	6	10.1
1889	9	10.1
1890	13	13.4
1891	6	13.4
1892	16	13.4
1893	5	13.4
1894	12	13.4
1895	20	13.4
1896	17	13.4
1897	11	13.4
1898	23	13.4
1899	11	13.4
1900	16	9.1
1901	27	9.1
1903	2	9.1
1904	1	9.1
1905	4	9.1
1906	12	9.1
1907	6	9.1
1908	9	9.1
1909	5	9.1
1910	5	13.8
1911	17	13.8
1912	11	13.8
1913	17	13.8
1914	19	13.8
1915	2	13.8
1918	14	13.8
1919	25	13.8
1920	6	6

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

First to last qualifying date each year at Gravenhurst
Year	First date	Last date
1876	1876-06-11	1876-08-31
1877	1877-06-01	1877-08-01
1878	1878-06-29	1878-07-20
1879	1879-05-13	1879-08-02
1880	1880-06-23	1880-08-24
1881	1881-05-24	1881-09-06
1882	1882-06-24	1882-08-15
1883	1883-08-22	1883-08-22
1884	1884-06-17	1884-09-10
1885	1885-07-24	1885-07-30
1886	1886-06-15	1886-08-10
1887	1887-05-22	1887-09-13
1888	1888-06-09	1888-07-03
1889	1889-05-18	1889-08-28
1890	1890-06-05	1890-08-08
1891	1891-06-15	1891-07-13
1892	1892-06-12	1892-08-19
1893	1893-06-15	1893-08-11
1894	1894-06-15	1894-08-24
1895	1895-05-05	1895-09-22
1896	1896-06-07	1896-08-21
1897	1897-07-03	1897-09-09
1898	1898-06-04	1898-09-03
1899	1899-06-13	1899-08-31
1900	1900-06-26	1900-09-11
1901	1901-06-05	1901-08-23
1903	1903-07-08	1903-07-09
1904	1904-07-17	1904-07-17
1905	1905-06-16	1905-07-18
1906	1906-08-03	1906-09-11
1907	1907-06-17	1907-08-11
1908	1908-05-28	1908-08-31
1909	1909-06-23	1909-09-14
1910	1910-06-16	1910-07-24
1911	1911-05-20	1911-08-07
1912	1912-07-02	1912-07-12
1913	1913-06-24	1913-09-07
1914	1914-06-08	1914-09-22
1915	1915-07-02	1915-09-14
1918	1918-07-21	1918-08-25
1919	1919-05-30	1919-08-05
1920	1920-08-06	1920-09-26

Every Fixed Threshold

Fixed thresholds at Gravenhurst
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	42	27	1901	6
35 C (95 F): Days	8	2	1881	1
90 F (32.2 C): Days	32	12	1919	1
0 C (32 F): Ice days (max	43	110	1879	97
0 C (32 F): Frost days (min	43	199	1907	165
-10 C (14 F): Days with min	43	100	1883	85
-20 C (-4 F): Days with min	43	48	1904	41
-30 C (-22 F): Days with min	39	16	1912	8
-40 C (-40 F): Days with min	4	5	1912	3
20 C (68 F): Tropical nights (min	28	5	1918	3
10 mm (0.39 in): Days with 10 mm or more rain	46	45	1878	34
25 mm (0.98 in): Days with 25 mm or more rain	46	8	1880	7
50 mm (1.97 in): Days with 50 mm or more rain	18	2	1895	2
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1878	1
10 cm (3.9 in): Days with 10 cm or more snowfall	47	15	1871	11
25 cm (9.8 in): Days with 25 cm or more snowfall	14	3	1915	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1876.

Download the Data

Data for Gravenhurst 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).

Gravenhurst Threshold Days by Year (CA006113000)

Key Facts for Gravenhurst Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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