Bromptonville Threshold Days by Year (CA007020860)

14 fixed thresholds counted per year at Bromptonville (CA007020860): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Bromptonville Thresholds

Bromptonville: days with 10 cm (3.9 in) or more of snowfall in 25 years, most in 1962 with 13.
Bromptonville: days with 10 mm (0.39 in) or more of precipitation in 24 years, most in 1983 with 52.
Bromptonville: days with 25 mm (0.98 in) or more of precipitation in 24 years, most in 1972 with 8.
Bromptonville: nights with a minimum temperature at or below 0 C (32 F) in 23 years, most in 1978 with 188.
14 fixed thresholds have at least one qualifying day at Bromptonville.

Days at or above 30 C (86 F)

21 years with a qualifying day

Days per year at Bromptonville with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 21 in 1975.

Days at or above 30 C (86 F) per year at Bromptonville
Year	Days	Decade average
1958	1	1
1960	7	7.1
1961	6	7.1
1962	4	7.1
1963	18	7.1
1964	9	7.1
1965	4	7.1
1966	6	7.1
1967	3	7.1
1971	9	10.3
1972	6	10.3
1973	5	10.3
1975	21	10.3
1976	9	10.3
1977	10	10.3
1978	11	10.3
1979	11	10.3
1980	2	5.5
1981	4	5.5
1982	5	5.5
1983	11	5.5

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

First to last qualifying date each year at Bromptonville
Year	First date	Last date
1958	1958-08-31	1958-08-31
1960	1960-06-17	1960-09-09
1961	1961-05-15	1961-09-11
1962	1962-05-18	1962-08-31
1963	1963-06-04	1963-07-29
1964	1964-05-23	1964-07-29
1965	1965-06-28	1965-09-22
1966	1966-05-24	1966-08-09
1967	1967-06-03	1967-06-05
1971	1971-05-19	1971-08-19
1972	1972-06-15	1972-07-21
1973	1973-07-08	1973-09-05
1975	1975-05-20	1975-08-03
1976	1976-06-06	1976-08-22
1977	1977-05-21	1977-08-29
1978	1978-05-27	1978-08-16
1979	1979-05-09	1979-08-02
1980	1980-06-25	1980-08-05
1981	1981-06-16	1981-07-09
1982	1982-07-07	1982-07-18
1983	1983-06-13	1983-08-06

Every Fixed Threshold

Fixed thresholds at Bromptonville
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	21	21	1975	11
35 C (95 F): Days	1	1	1975	1
90 F (32.2 C): Days	11	9	1963	1
0 C (32 F): Ice days (max	21	95	1963	63
0 C (32 F): Frost days (min	23	188	1978	172
-10 C (14 F): Days with min	23	101	1978	72
-20 C (-4 F): Days with min	23	39	1963	20
-30 C (-22 F): Days with min	23	13	1979	2
20 C (68 F): Tropical nights (min	22	10	1973	5
10 mm (0.39 in): Days with 10 mm or more rain	24	52	1983	52
25 mm (0.98 in): Days with 25 mm or more rain	24	8	1972	6
50 mm (1.97 in): Days with 50 mm or more rain	12	1	1960	1
10 cm (3.9 in): Days with 10 cm or more snowfall	25	13	1962	9
25 cm (9.8 in): Days with 25 cm or more snowfall	8	2	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 1958.

Download the Data

Data for Bromptonville 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).

Bromptonville Threshold Days by Year (CA007020860)

Key Facts for Bromptonville Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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