Birtle Threshold Days by Year

17 fixed thresholds counted per year at Birtle (CA005010240): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Birtle Thresholds

Birtle: nights with a minimum temperature at or below 0 C (32 F) in 64 years, most in 1917 with 230.
Birtle: nights with a minimum temperature at or below -10 C (14 F) in 64 years, most in 1955 with 141.
Birtle: nights with a minimum temperature at or below -20 C (-4 F) in 64 years, most in 1955 with 98.
Birtle: nights with a minimum temperature at or below -30 C (-22 F) in 64 years, most in 1936 with 43.
17 fixed thresholds have at least one qualifying day at Birtle.

Days at or above 30 C (86 F)

61 years with a qualifying day

Days per year at Birtle with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 43 in 1961.

Days at or above 30 C (86 F) per year at Birtle
Year	Days	Decade average
1916	7	10
1917	17	10
1918	4	10
1919	12	10
1920	10	7.7
1925	4	7.7
1926	6	7.7
1927	2	7.7
1928	3	7.7
1929	21	7.7
1930	17	18.2
1931	23	18.2
1932	7	18.2
1934	17	18.2
1935	5	18.2
1936	33	18.2
1937	23	18.2
1938	13	18.2
1939	26	18.2
1940	19	8.5
1941	14	8.5
1942	2	8.5
1943	5	8.5
1944	3	8.5
1945	9	8.5
1946	8	8.5
1947	7	8.5
1948	6	8.5
1949	12	8.5
1950	3	7.8
1951	5	7.8
1953	9	7.8
1955	8	7.8
1956	4	7.8
1957	8	7.8
1958	15	7.8
1959	10	7.8
1960	13	12.4
1961	43	12.4
1962	4	12.4
1963	12	12.4
1964	4	12.4
1965	5	12.4
1966	9	12.4
1967	18	12.4
1968	3	12.4
1969	13	12.4
1970	12	10.2
1971	6	10.2
1972	9	10.2
1973	13	10.2
1974	6	10.2
1975	13	10.2
1976	5	10.2
1977	8	10.2
1978	14	10.2
1979	16	10.2
1980	20	17
1981	13	17
1982	6	17
1983	29	17

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

First to last qualifying date each year at Birtle
Year	First date	Last date
1916	1916-07-14	1916-08-18
1917	1917-05-15	1917-09-23
1918	1918-05-04	1918-07-20
1919	1919-05-26	1919-08-19
1920	1920-07-03	1920-08-27
1925	1925-05-19	1925-07-14
1926	1926-05-05	1926-07-31
1927	1927-07-26	1927-08-12
1928	1928-07-23	1928-08-11
1929	1929-06-16	1929-09-01
1930	1930-05-03	1930-09-18
1931	1931-05-14	1931-09-28
1932	1932-05-13	1932-08-23
1934	1934-05-05	1934-09-08
1935	1935-07-15	1935-08-14
1936	1936-05-27	1936-09-03
1937	1937-06-17	1937-09-21
1938	1938-06-21	1938-09-22
1939	1939-05-01	1939-09-18
1940	1940-05-11	1940-08-13
1941	1941-05-18	1941-08-05
1942	1942-07-22	1942-08-20
1943	1943-07-07	1943-07-24
1944	1944-05-29	1944-07-24
1945	1945-06-21	1945-09-05
1946	1946-07-26	1946-09-15
1947	1947-07-14	1947-08-22
1948	1948-05-19	1948-09-04
1949	1949-04-27	1949-08-18
1950	1950-06-04	1950-07-29
1951	1951-05-23	1951-07-29
1953	1953-05-06	1953-08-22
1955	1955-06-29	1955-08-12
1956	1956-05-21	1956-06-11
1957	1957-07-10	1957-08-06
1958	1958-05-12	1958-08-18
1959	1959-06-14	1959-08-08
1960	1960-05-12	1960-09-03
1961	1961-05-29	1961-08-31
1962	1962-06-27	1962-08-21
1963	1963-05-30	1963-09-09
1964	1964-05-20	1964-10-13
1965	1965-08-10	1965-08-23
1966	1966-05-21	1966-08-30
1967	1967-06-27	1967-09-06
1968	1968-07-06	1968-07-12
1969	1969-05-26	1969-09-13
1970	1970-06-03	1970-09-05
1971	1971-08-06	1971-08-28
1972	1972-05-18	1972-08-30
1973	1973-06-02	1973-08-27
1974	1974-06-19	1974-08-06
1975	1975-06-25	1975-07-30
1976	1976-08-07	1976-09-06
1977	1977-05-10	1977-07-22
1978	1978-05-24	1978-09-10
1979	1979-06-12	1979-09-16
1980	1980-04-20	1980-09-07
1981	1981-07-01	1981-09-10
1982	1982-07-04	1982-09-10
1983	1983-06-10	1983-09-02

Every Fixed Threshold

Fixed thresholds at Birtle
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	61	43	1961	29
35 C (95 F): Days	27	9	1931	3
40 C (104 F): Days	2	3	1931	1
90 F (32.2 C): Days	53	21	1936	10
100 F (37.8 C): Days	5	3	1931	1
0 C (32 F): Ice days (max	63	145	1919	122
0 C (32 F): Frost days (min	64	230	1917	209
-10 C (14 F): Days with min	64	141	1955	111
-20 C (-4 F): Days with min	64	98	1955	54
-30 C (-22 F): Days with min	64	43	1936	20
-40 C (-40 F): Days with min	35	8	1936	1
20 C (68 F): Tropical nights (min	15	2	1916	2
10 mm (0.39 in): Days with 10 mm or more rain	59	26	1884	6
25 mm (0.98 in): Days with 25 mm or more rain	50	7	1970	1
50 mm (1.97 in): Days with 50 mm or more rain	14	3	1947	1
10 cm (3.9 in): Days with 10 cm or more snowfall	49	6	1959	1
25 cm (9.8 in): Days with 25 cm or more snowfall	5	1	1925	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 Birtle 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

Data as of 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Birtle Threshold Days by Year

Key Facts for Birtle Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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