Mistassini Post Threshold Days by Year (CA007095000)

18 fixed thresholds counted per year at Mistassini Post (CA007095000): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mistassini Post Thresholds

Mistassini Post: nights with a minimum temperature at or below 0 C (32 F) in 50 years, most in 1926 with 249.
Mistassini Post: nights with a minimum temperature at or below -10 C (14 F) in 50 years, most in 1926 with 154.
Mistassini Post: nights with a minimum temperature at or below -20 C (-4 F) in 50 years, most in 1926 with 113.
Mistassini Post: nights with a minimum temperature at or below -30 C (-22 F) in 50 years, most in 1972 with 55.
18 fixed thresholds have at least one qualifying day at Mistassini Post.

Days at or above 30 C (86 F)

19 years with a qualifying day

Days per year at Mistassini Post with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 10 in 1919.

Days at or above 30 C (86 F) per year at Mistassini Post
Year	Days	Decade average
1916	7	8.5
1919	10	8.5
1920	2	2.8
1921	5	2.8
1923	1	2.8
1926	4	2.8
1927	2	2.8
1931	2	1.7
1936	1	1.7
1939	2	1.7
1941	2	2.5
1944	2	2.5
1945	5	2.5
1948	1	2.5
1954	1	1
1959	1	1
1960	1	1
1976	2	1.5
1978	1	1.5

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

First to last qualifying date each year at Mistassini Post
Year	First date	Last date
1916	1916-07-06	1916-08-20
1919	1919-05-29	1919-07-02
1920	1920-08-27	1920-08-28
1921	1921-07-01	1921-07-05
1923	1923-06-18	1923-06-18
1926	1926-07-27	1926-08-03
1927	1927-07-01	1927-07-02
1931	1931-06-29	1931-06-30
1936	1936-07-10	1936-07-10
1939	1939-07-06	1939-07-25
1941	1941-07-22	1941-07-23
1944	1944-07-04	1944-07-05
1945	1945-07-23	1945-08-20
1948	1948-07-11	1948-07-11
1954	1954-06-29	1954-06-29
1959	1959-06-19	1959-06-19
1960	1960-05-27	1960-05-27
1976	1976-07-06	1976-08-21
1978	1978-08-15	1978-08-15

Every Fixed Threshold

Fixed thresholds at Mistassini Post
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	19	10	1919	1
35 C (95 F): Days	2	2	1945	2
40 C (104 F): Days	1	1	1945	1
90 F (32.2 C): Days	4	3	1945	3
100 F (37.8 C): Days	1	2	1945	2
0 C (32 F): Ice days (max	49	163	1929	114
0 C (32 F): Frost days (min	50	249	1926	211
-10 C (14 F): Days with min	50	154	1926	114
-20 C (-4 F): Days with min	50	113	1926	65
-30 C (-22 F): Days with min	50	55	1972	36
-40 C (-40 F): Days with min	49	16	1917	3
20 C (68 F): Tropical nights (min	4	3	1963	3
25 C (77 F): Days with min	1	2	1944	2
10 mm (0.39 in): Days with 10 mm or more rain	44	41	1927	25
25 mm (0.98 in): Days with 25 mm or more rain	42	8	1945	5
50 mm (1.97 in): Days with 50 mm or more rain	5	2	1932	2
10 cm (3.9 in): Days with 10 cm or more snowfall	48	21	1971	3
25 cm (9.8 in): Days with 25 cm or more snowfall	16	2	1963	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1916.

Download the Data

Data for Mistassini Post 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).

Mistassini Post Threshold Days by Year (CA007095000)

Key Facts for Mistassini Post Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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