Boissevain Threshold Days by Year (CA005020320)

16 fixed thresholds counted per year at Boissevain (CA005020320): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Boissevain Thresholds

Boissevain: days with a maximum temperature at or above 30 C (86 F) in 23 years, most in 1980 with 25.
Boissevain: days with a maximum temperature at or below 0 C (32 F) in 23 years, most in 1950 with 137.
Boissevain: nights with a minimum temperature at or below 0 C (32 F) in 23 years, most in 1945 with 214.
Boissevain: nights with a minimum temperature at or below -10 C (14 F) in 23 years, most in 1951 with 127.
16 fixed thresholds have at least one qualifying day at Boissevain.

Days at or above 30 C (86 F)

23 years with a qualifying day

Days per year at Boissevain with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 25 in 1980.

Days at or above 30 C (86 F) per year at Boissevain
Year	Days	Decade average
1943	2	8
1944	3	8
1945	12	8
1946	10	8
1947	13	8
1950	2	5.5
1951	9	5.5
1964	9	10.6
1965	5	10.6
1966	17	10.6
1967	17	10.6
1968	5	10.6
1970	22	14
1971	6	14
1972	12	14
1973	14	14
1974	12	14
1975	15	14
1976	15	14
1977	9	14
1978	18	14
1979	17	14
1980	25	25

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

First to last qualifying date each year at Boissevain
Year	First date	Last date
1943	1943-07-09	1943-07-10
1944	1944-05-30	1944-07-31
1945	1945-06-21	1945-09-05
1946	1946-07-16	1946-09-14
1947	1947-07-10	1947-08-22
1950	1950-07-28	1950-07-29
1951	1951-05-23	1951-07-29
1964	1964-05-20	1964-08-09
1965	1965-08-04	1965-08-13
1966	1966-05-22	1966-08-30
1967	1967-06-29	1967-09-05
1968	1968-06-03	1968-07-12
1970	1970-06-04	1970-09-05
1971	1971-08-06	1971-09-02
1972	1972-05-16	1972-08-30
1973	1973-06-02	1973-08-31
1974	1974-06-19	1974-08-09
1975	1975-06-24	1975-07-30
1976	1976-06-01	1976-09-17
1977	1977-05-10	1977-07-18
1978	1978-06-14	1978-09-10
1979	1979-06-12	1979-09-16
1980	1980-04-20	1980-09-07

Every Fixed Threshold

Fixed thresholds at Boissevain
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	23	25	1980	25
35 C (95 F): Days	14	3	1975	3
90 F (32.2 C): Days	20	11	1980	11
0 C (32 F): Ice days (max	23	137	1950	101
0 C (32 F): Frost days (min	23	214	1945	190
-10 C (14 F): Days with min	23	127	1951	102
-20 C (-4 F): Days with min	23	77	1978	49
-30 C (-22 F): Days with min	23	23	1972	10
-40 C (-40 F): Days with min	4	4	1968	4
20 C (68 F): Tropical nights (min	12	4	1975	1
25 C (77 F): Days with min	1	1	1975	1
10 mm (0.39 in): Days with 10 mm or more rain	22	23	1975	18
25 mm (0.98 in): Days with 25 mm or more rain	19	7	1975	5
50 mm (1.97 in): Days with 50 mm or more rain	8	2	1980	2
10 cm (3.9 in): Days with 10 cm or more snowfall	21	6	1966	5
25 cm (9.8 in): Days with 25 cm or more snowfall	2	1	1950	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1943.

Download the Data

Data for Boissevain 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).

Boissevain Threshold Days by Year (CA005020320)

Key Facts for Boissevain Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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