Hannibal Threshold Days by Year (USW00093994)

18 fixed thresholds counted per year at Hannibal (USW00093994): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Hannibal Thresholds

Hannibal: days with a maximum temperature at or above 30 C (86 F) in 41 years, most in 1936 with 102.
Hannibal: days with a maximum temperature at or above 90 F (32.2 C) in 41 years, most in 1936 with 79.
Hannibal: days with a maximum temperature at or below 0 C (32 F) in 41 years, most in 1912 with 53.
Hannibal: nights with a minimum temperature at or below 0 C (32 F) in 41 years, most in 1943 with 132.
18 fixed thresholds have at least one qualifying day at Hannibal.

Days at or above 30 C (86 F)

41 years with a qualifying day

Days per year at Hannibal with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 102 in 1936.

Days at or above 30 C (86 F) per year at Hannibal
Year	Days	Decade average
1908	57	58.5
1909	60	58.5
1910	47	63.2
1911	84	63.2
1912	59	63.2
1913	87	63.2
1914	83	63.2
1915	29	63.2
1916	64	63.2
1917	46	63.2
1918	61	63.2
1919	72	63.2
1920	52	57.4
1921	80	57.4
1922	70	57.4
1923	60	57.4
1924	40	57.4
1925	70	57.4
1926	55	57.4
1927	46	57.4
1928	52	57.4
1929	49	57.4
1930	71	75.4
1931	80	75.4
1932	54	75.4
1933	86	75.4
1934	95	75.4
1935	52	75.4
1936	102	75.4
1937	77	75.4
1938	74	75.4
1939	63	75.4
1940	67	61.1
1941	78	61.1
1942	56	61.1
1943	62	61.1
1944	73	61.1
1945	42	61.1
1946	52	61.1
1947	63	61.1
1948	57	61.1

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

First to last qualifying date each year at Hannibal
Year	First date	Last date
1908	1908-05-15	1908-10-14
1909	1909-04-29	1909-10-03
1910	1910-03-23	1910-10-02
1911	1911-05-09	1911-10-03
1912	1912-05-06	1912-10-09
1913	1913-05-13	1913-09-10
1914	1914-04-26	1914-09-19
1915	1915-05-12	1915-09-14
1916	1916-05-07	1916-10-08
1917	1917-05-18	1917-09-15
1918	1918-03-13	1918-08-29
1919	1919-05-30	1919-10-02
1920	1920-05-22	1920-09-26
1921	1921-05-20	1921-09-22
1922	1922-05-11	1922-10-05
1923	1923-05-31	1923-09-29
1924	1924-04-24	1924-10-18
1925	1925-04-18	1925-09-28
1926	1926-05-17	1926-10-03
1927	1927-05-23	1927-10-27
1928	1928-05-02	1928-10-12
1929	1929-03-24	1929-09-28
1930	1930-04-10	1930-09-25
1931	1931-05-16	1931-10-10
1932	1932-05-04	1932-09-15
1933	1933-05-19	1933-09-30
1934	1934-05-06	1934-09-25
1935	1935-06-13	1935-09-24
1936	1936-04-14	1936-09-22
1937	1937-05-29	1937-10-29
1938	1938-05-18	1938-10-15
1939	1939-05-21	1939-10-23
1940	1940-05-05	1940-10-05
1941	1941-04-13	1941-09-23
1942	1942-04-29	1942-09-18
1943	1943-05-05	1943-09-05
1944	1944-05-15	1944-09-20
1945	1945-03-16	1945-09-23
1946	1946-06-07	1946-09-27
1947	1947-06-09	1947-10-14
1948	1948-04-18	1948-09-20

Every Fixed Threshold

Fixed thresholds at Hannibal
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	41	102	1936	57
35 C (95 F): Days	40	57	1936	3
40 C (104 F): Days	5	20	1936	20
90 F (32.2 C): Days	41	79	1936	21
100 F (37.8 C): Days	19	41	1936	4
110 F (43.3 C): Days	1	3	1934	3
0 C (32 F): Ice days (max	41	53	1912	42
0 C (32 F): Frost days (min	41	132	1943	108
-10 C (14 F): Days with min	41	46	1929	38
-20 C (-4 F): Days with min	29	17	1936	4
20 C (68 F): Tropical nights (min	41	75	1921	34
25 C (77 F): Days with min	26	26	1936	1
10 mm (0.39 in): Days with 10 mm or more rain	41	47	1935	35
25 mm (0.98 in): Days with 25 mm or more rain	41	16	1926	10
50 mm (1.97 in): Days with 50 mm or more rain	30	4	1909	1
100 mm (3.94 in): Days with 100 mm or more rain	6	1	1910	1
10 cm (3.9 in): Days with 10 cm or more snowfall	31	4	1926	2
25 cm (9.8 in): Days with 25 cm or more snowfall	2	1	1915	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1908.

Download the Data

Data for Hannibal 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Hannibal Threshold Days by Year (USW00093994)

Key Facts for Hannibal Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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