Gravelbourg Threshold Days by Year (CA004022960)

18 fixed thresholds counted per year at Gravelbourg (CA004022960): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Gravelbourg Thresholds

Gravelbourg: days with a maximum temperature at or above 30 C (86 F) in 57 years, most in 1936 with 44.
Gravelbourg: days with a maximum temperature at or below 0 C (32 F) in 57 years, most in 1951 with 129.
Gravelbourg: days with a maximum temperature at or above 90 F (32.2 C) in 56 years, most in 1936 with 32.
Gravelbourg: nights with a minimum temperature at or below 0 C (32 F) in 55 years, most in 1942 with 238.
18 fixed thresholds have at least one qualifying day at Gravelbourg.

Days at or above 30 C (86 F)

57 years with a qualifying day

Days per year at Gravelbourg with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 44 in 1936.

Days at or above 30 C (86 F) per year at Gravelbourg
Year	Days	Decade average
1922	14	15.4
1923	8	15.4
1924	11	15.4
1928	12	15.4
1929	32	15.4
1930	34	33.3
1931	31	33.3
1932	26	33.3
1933	35	33.3
1934	35	33.3
1935	29	33.3
1936	44	33.3
1937	41	33.3
1938	30	33.3
1939	28	33.3
1940	34	28.2
1941	23	28.2
1942	17	28.2
1943	26	28.2
1944	13	28.2
1945	33	28.2
1946	36	28.2
1947	28	28.2
1948	32	28.2
1949	40	28.2
1950	21	24.9
1951	17	24.9
1952	16	24.9
1953	26	24.9
1955	22	24.9
1956	27	24.9
1957	31	24.9
1958	37	24.9
1959	27	24.9
1960	34	27.8
1962	17	27.8
1963	32	27.8
1964	30	27.8
1965	21	27.8
1966	27	27.8
1967	37	27.8
1968	18	27.8
1969	34	27.8
1970	40	24.8
1971	33	24.8
1972	19	24.8
1973	28	24.8
1974	21	24.8
1975	20	24.8
1976	22	24.8
1977	20	24.8
1978	19	24.8
1979	26	24.8
1980	21	22.8
1981	21	22.8
1982	12	22.8
1983	37	22.8

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

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

Every Fixed Threshold

Fixed thresholds at Gravelbourg
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	57	44	1936	37
35 C (95 F): Days	46	14	1937	9
40 C (104 F): Days	6	3	1949	3
90 F (32.2 C): Days	56	32	1936	14
100 F (37.8 C): Days	24	6	1937	1
0 C (32 F): Ice days (max	57	129	1951	95
0 C (32 F): Frost days (min	55	238	1942	204
-10 C (14 F): Days with min	55	136	1951	83
-20 C (-4 F): Days with min	55	74	1951	29
-30 C (-22 F): Days with min	54	32	1936	10
-40 C (-40 F): Days with min	14	8	1936	1
20 C (68 F): Tropical nights (min	19	19	1929	1
25 C (77 F): Days with min	3	3	1922	3
10 mm (0.39 in): Days with 10 mm or more rain	49	16	1935	12
25 mm (0.98 in): Days with 25 mm or more rain	41	4	1923	3
50 mm (1.97 in): Days with 50 mm or more rain	6	2	1978	2
10 cm (3.9 in): Days with 10 cm or more snowfall	44	8	1983	8
25 cm (9.8 in): Days with 25 cm or more snowfall	3	1	1938	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1922.

Download the Data

Data for Gravelbourg 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).

Gravelbourg Threshold Days by Year (CA004022960)

Key Facts for Gravelbourg Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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