Leader Threshold Days by Year (CA004024160)

18 fixed thresholds counted per year at Leader (CA004024160): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Leader Thresholds

Leader: nights with a minimum temperature at or below 0 C (32 F) in 44 years, most in 1928 with 227.
Leader: nights with a minimum temperature at or below -10 C (14 F) in 44 years, most in 1955 with 136.
Leader: nights with a minimum temperature at or below -20 C (-4 F) in 44 years, most in 1955 with 78.
Leader: days with a maximum temperature at or above 30 C (86 F) in 43 years, most in 1936 with 52.
18 fixed thresholds have at least one qualifying day at Leader.

Days at or above 30 C (86 F)

43 years with a qualifying day

Days per year at Leader with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 52 in 1936.

Days at or above 30 C (86 F) per year at Leader
Year	Days	Decade average
1924	15	22.5
1925	24	22.5
1926	25	22.5
1927	5	22.5
1928	25	22.5
1929	41	22.5
1930	43	38.5
1931	41	38.5
1932	27	38.5
1933	42	38.5
1934	37	38.5
1935	28	38.5
1936	52	38.5
1937	45	38.5
1938	38	38.5
1939	32	38.5
1940	30	35.3
1941	35	35.3
1942	26	35.3
1943	38	35.3
1944	36	35.3
1945	37	35.3
1946	36	35.3
1947	29	35.3
1948	41	35.3
1949	45	35.3
1952	20	24.5
1953	28	24.5
1954	14	24.5
1955	20	24.5
1956	27	24.5
1957	22	24.5
1958	39	24.5
1959	26	24.5
1960	36	26.7
1961	47	26.7
1962	13	26.7
1963	31	26.7
1964	28	26.7
1965	21	26.7
1966	16	26.7
1967	33	26.7
1968	15	26.7

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

First to last qualifying date each year at Leader
Year	First date	Last date
1924	1924-06-26	1924-09-06
1925	1925-05-19	1925-09-03
1926	1926-06-04	1926-08-25
1927	1927-07-24	1927-09-06
1928	1928-05-06	1928-09-18
1929	1929-06-15	1929-08-31
1930	1930-06-06	1930-09-06
1931	1931-05-13	1931-09-06
1932	1932-05-11	1932-09-07
1933	1933-05-30	1933-08-29
1934	1934-05-15	1934-10-12
1935	1935-06-22	1935-09-14
1936	1936-05-14	1936-09-04
1937	1937-06-02	1937-09-20
1938	1938-05-27	1938-09-24
1939	1939-04-28	1939-09-05
1940	1940-06-13	1940-09-13
1941	1941-05-10	1941-08-22
1942	1942-04-21	1942-10-10
1943	1943-04-19	1943-10-09
1944	1944-05-14	1944-09-13
1945	1945-05-30	1945-09-13
1946	1946-05-25	1946-09-14
1947	1947-07-02	1947-09-03
1948	1948-05-17	1948-09-22
1949	1949-04-27	1949-09-29
1952	1952-04-25	1952-09-26
1953	1953-05-06	1953-09-12
1954	1954-05-19	1954-08-30
1955	1955-07-14	1955-09-02
1956	1956-05-17	1956-09-08
1957	1957-04-30	1957-10-01
1958	1958-05-11	1958-09-12
1959	1959-05-16	1959-09-13
1960	1960-05-11	1960-09-13
1961	1961-05-22	1961-09-05
1962	1962-06-24	1962-09-27
1963	1963-05-24	1963-09-30
1964	1964-05-19	1964-08-18
1965	1965-06-10	1965-08-23
1966	1966-05-26	1966-09-18
1967	1967-06-26	1967-09-29
1968	1968-06-19	1968-09-11

Every Fixed Threshold

Fixed thresholds at Leader
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	43	52	1936	15
35 C (95 F): Days	39	24	1936	1
40 C (104 F): Days	8	4	1933	1
90 F (32.2 C): Days	43	38	1936	9
100 F (37.8 C): Days	24	7	1929	2
0 C (32 F): Ice days (max	43	126	1935	73
0 C (32 F): Frost days (min	44	227	1928	188
-10 C (14 F): Days with min	44	136	1955	71
-20 C (-4 F): Days with min	44	78	1955	38
-30 C (-22 F): Days with min	43	28	1936	15
-40 C (-40 F): Days with min	16	6	1936	2
20 C (68 F): Tropical nights (min	10	16	1926	1
25 C (77 F): Days with min	1	7	1926	7
10 mm (0.39 in): Days with 10 mm or more rain	43	15	1953	7
25 mm (0.98 in): Days with 25 mm or more rain	29	5	1927	2
50 mm (1.97 in): Days with 50 mm or more rain	6	1	1927	1
10 cm (3.9 in): Days with 10 cm or more snowfall	37	5	1945	1
25 cm (9.8 in): Days with 25 cm or more snowfall	2	1	1945	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1924.

Download the Data

Data for Leader 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).

Leader Threshold Days by Year (CA004024160)

Key Facts for Leader Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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