Morrisburg Threshold Days by Year (CA006105460)

19 fixed thresholds counted per year at Morrisburg (CA006105460): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Morrisburg Thresholds

Morrisburg: days with 10 mm (0.39 in) or more of precipitation in 70 years, most in 1916 with 46.
Morrisburg: days with 25 mm (0.98 in) or more of precipitation in 70 years, most in 1918 with 14.
Morrisburg: days with a maximum temperature at or below 0 C (32 F) in 69 years, most in 1926 with 102.
Morrisburg: nights with a minimum temperature at or below 0 C (32 F) in 69 years, most in 1940 with 189.
19 fixed thresholds have at least one qualifying day at Morrisburg.

Days at or above 30 C (86 F)

68 years with a qualifying day

Days per year at Morrisburg with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 39 in 1949.

Days at or above 30 C (86 F) per year at Morrisburg
Year	Days	Decade average
1915	4	11
1916	21	11
1917	7	11
1918	11	11
1919	12	11
1920	11	9.6
1921	26	9.6
1922	7	9.6
1923	9	9.6
1924	1	9.6
1925	8	9.6
1926	4	9.6
1927	3	9.6
1928	9	9.6
1929	18	9.6
1930	1	16.7
1931	19	16.7
1932	8	16.7
1933	26	16.7
1934	16	16.7
1935	17	16.7
1936	11	16.7
1937	28	16.7
1938	23	16.7
1939	18	16.7
1940	10	19.8
1941	27	19.8
1942	16	19.8
1943	15	19.8
1944	28	19.8
1945	17	19.8
1946	16	19.8
1947	18	19.8
1948	12	19.8
1949	39	19.8
1950	5	9.7
1951	1	9.7
1952	14	9.7
1953	17	9.7
1954	3	9.7
1955	32	9.7
1956	3	9.7
1957	6	9.7
1958	3	9.7
1959	13	9.7
1960	7	7.2
1962	6	7.2
1963	11	7.2
1964	6	7.2
1965	6	7.2
1966	14	7.2
1967	1	7.2
1968	6	7.2
1969	8	7.2
1970	8	9.8
1971	9	9.8
1972	3	9.8
1973	11	9.8
1974	6	9.8
1975	23	9.8
1976	4	9.8
1977	11	9.8
1978	12	9.8
1979	11	9.8
1980	5	10.8
1981	6	10.8
1982	8	10.8
1983	24	10.8

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

First to last qualifying date each year at Morrisburg
Year	First date	Last date
1915	1915-06-07	1915-09-16
1916	1916-07-12	1916-09-07
1917	1917-07-23	1917-08-02
1918	1918-07-21	1918-08-13
1919	1919-06-03	1919-07-30
1920	1920-06-15	1920-09-26
1921	1921-05-21	1921-09-03
1922	1922-08-01	1922-09-10
1923	1923-06-19	1923-08-12
1924	1924-07-21	1924-07-21
1925	1925-06-06	1925-08-30
1926	1926-07-19	1926-08-06
1927	1927-04-18	1927-06-29
1928	1928-06-14	1928-08-28
1929	1929-05-28	1929-09-05
1930	1930-06-30	1930-06-30
1931	1931-06-20	1931-09-13
1932	1932-06-18	1932-09-01
1933	1933-06-09	1933-08-23
1934	1934-05-29	1934-09-03
1935	1935-07-05	1935-08-20
1936	1936-06-09	1936-09-23
1937	1937-06-25	1937-09-25
1938	1938-06-20	1938-09-13
1939	1939-07-04	1939-09-16
1940	1940-07-09	1940-08-18
1941	1941-06-18	1941-08-10
1942	1942-05-14	1942-09-18
1943	1943-06-04	1943-09-06
1944	1944-06-28	1944-08-31
1945	1945-06-24	1945-09-08
1946	1946-06-25	1946-09-20
1947	1947-06-11	1947-09-07
1948	1948-07-10	1948-09-30
1949	1949-06-12	1949-08-27
1950	1950-06-25	1950-07-17
1951	1951-09-13	1951-09-13
1952	1952-06-17	1952-09-11
1953	1953-06-20	1953-09-05
1954	1954-07-13	1954-07-30
1955	1955-06-17	1955-08-22
1956	1956-06-14	1956-08-09
1957	1957-06-17	1957-08-03
1958	1958-07-24	1958-08-31
1959	1959-06-09	1959-09-10
1960	1960-07-29	1960-09-09
1962	1962-05-17	1962-08-31
1963	1963-06-28	1963-07-28
1964	1964-06-23	1964-07-28
1965	1965-06-28	1965-09-22
1966	1966-06-24	1966-08-09
1967	1967-06-03	1967-06-03
1968	1968-07-14	1968-07-22
1969	1969-06-12	1969-08-24
1970	1970-05-01	1970-08-15
1971	1971-05-19	1971-08-19
1972	1972-07-12	1972-07-21
1973	1973-07-24	1973-09-05
1974	1974-06-10	1974-08-26
1975	1975-05-22	1975-08-26
1976	1976-04-18	1976-08-21
1977	1977-05-20	1977-08-29
1978	1978-05-27	1978-08-19
1979	1979-05-08	1979-07-30
1980	1980-06-24	1980-08-24
1981	1981-06-16	1981-07-19
1982	1982-05-07	1982-07-22
1983	1983-06-12	1983-09-20

Every Fixed Threshold

Fixed thresholds at Morrisburg
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	68	39	1949	24
35 C (95 F): Days	9	7	1944	2
90 F (32.2 C): Days	41	14	1921	5
100 F (37.8 C): Days	1	1	1921	1
0 C (32 F): Ice days (max	69	102	1926	69
0 C (32 F): Frost days (min	69	189	1940	161
-10 C (14 F): Days with min	69	94	1978	57
-20 C (-4 F): Days with min	69	44	1970	16
-30 C (-22 F): Days with min	64	10	1917	3
-40 C (-40 F): Days with min	2	1	1925	1
20 C (68 F): Tropical nights (min	62	18	1955	9
25 C (77 F): Days with min	4	2	1975	2
10 mm (0.39 in): Days with 10 mm or more rain	70	46	1916	43
25 mm (0.98 in): Days with 25 mm or more rain	70	14	1918	7
50 mm (1.97 in): Days with 50 mm or more rain	31	2	1916	1
100 mm (3.94 in): Days with 100 mm or more rain	2	1	1915	1
10 cm (3.9 in): Days with 10 cm or more snowfall	69	17	1920	6
25 cm (9.8 in): Days with 25 cm or more snowfall	21	4	1917	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	1960	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1915.

Download the Data

Data for Morrisburg 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).

Morrisburg Threshold Days by Year (CA006105460)

Key Facts for Morrisburg Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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