St Bruno Threshold Days by Year (CA007026920)

15 fixed thresholds counted per year at St Bruno (CA007026920): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for St Bruno Thresholds

St Bruno: nights with a minimum temperature at or below 0 C (32 F) in 29 years, most in 1936 with 175.
St Bruno: nights with a minimum temperature at or below -10 C (14 F) in 29 years, most in 1939 with 93.
St Bruno: nights with a minimum temperature at or below -20 C (-4 F) in 29 years, most in 1934 with 40.
St Bruno: nights with a minimum temperature at or above 20 C (68 F) in 29 years, most in 1947 with 19.
15 fixed thresholds have at least one qualifying day at St Bruno.

Days at or above 30 C (86 F)

26 years with a qualifying day

Days per year at St Bruno with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 29 in 1955.

Days at or above 30 C (86 F) per year at St Bruno
Year	Days	Decade average
1928	6	11.5
1929	17	11.5
1930	10	13.3
1931	14	13.3
1932	10	13.3
1933	19	13.3
1934	22	13.3
1935	12	13.3
1936	7	13.3
1937	14	13.3
1938	14	13.3
1939	11	13.3
1940	13	15.4
1941	21	15.4
1942	6	15.4
1943	9	15.4
1944	17	15.4
1946	13	15.4
1947	21	15.4
1948	14	15.4
1949	25	15.4
1950	6	11.6
1952	10	11.6
1955	29	11.6
1956	3	11.6
1957	10	11.6

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

First to last qualifying date each year at St Bruno
Year	First date	Last date
1928	1928-05-05	1928-08-18
1929	1929-05-28	1929-09-02
1930	1930-05-23	1930-09-02
1931	1931-06-19	1931-09-13
1932	1932-05-16	1932-09-04
1933	1933-06-09	1933-08-01
1934	1934-05-04	1934-09-17
1935	1935-07-04	1935-08-20
1936	1936-06-09	1936-07-13
1937	1937-05-31	1937-09-03
1938	1938-06-21	1938-08-20
1939	1939-05-08	1939-09-16
1940	1940-06-05	1940-08-19
1941	1941-06-18	1941-08-09
1942	1942-06-12	1942-09-19
1943	1943-06-26	1943-08-02
1944	1944-06-01	1944-08-17
1946	1946-06-25	1946-09-20
1947	1947-06-11	1947-09-15
1948	1948-06-29	1948-09-13
1949	1949-06-13	1949-08-27
1950	1950-06-09	1950-07-13
1952	1952-07-06	1952-08-28
1955	1955-06-18	1955-08-22
1956	1956-06-13	1956-06-15
1957	1957-06-15	1957-08-03

Every Fixed Threshold

Fixed thresholds at St Bruno
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	26	29	1955	10
35 C (95 F): Days	4	1	1931	1
90 F (32.2 C): Days	25	11	1955	1
0 C (32 F): Ice days (max	28	108	1940	71
0 C (32 F): Frost days (min	29	175	1936	154
-10 C (14 F): Days with min	29	93	1939	67
-20 C (-4 F): Days with min	29	40	1934	15
-30 C (-22 F): Days with min	8	5	1943	2
20 C (68 F): Tropical nights (min	29	19	1947	3
25 C (77 F): Days with min	4	3	1944	2
10 mm (0.39 in): Days with 10 mm or more rain	29	37	1932	36
25 mm (0.98 in): Days with 25 mm or more rain	29	9	1952	8
50 mm (1.97 in): Days with 50 mm or more rain	10	1	1927	1
10 cm (3.9 in): Days with 10 cm or more snowfall	29	12	1950	5
25 cm (9.8 in): Days with 25 cm or more snowfall	6	2	1944	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1928.

Download the Data

Data for St Bruno 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).

St Bruno Threshold Days by Year (CA007026920)

Key Facts for St Bruno Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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