Redfield Threshold Days by Year (USC00397047)

21 fixed thresholds counted per year at Redfield (USC00397047): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Redfield Thresholds

Redfield: days with a maximum temperature at or above 30 C (86 F) in 78 years, most in 1933 with 85.
Redfield: days with a maximum temperature at or above 90 F (32.2 C) in 78 years, most in 1933 with 70.
Redfield: days with a maximum temperature at or below 0 C (32 F) in 78 years, most in 1950 with 100.
Redfield: nights with a minimum temperature at or below 0 C (32 F) in 78 years, most in 1907 with 216.
21 fixed thresholds have at least one qualifying day at Redfield.

Days at or above 30 C (86 F)

78 years with a qualifying day

Days per year at Redfield with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 85 in 1933.

Days at or above 30 C (86 F) per year at Redfield
Year	Days	Decade average
1898	52	52
1899	52	52
1900	62	40.2
1901	57	40.2
1902	26	40.2
1903	33	40.2
1904	34	40.2
1905	38	40.2
1906	35	40.2
1907	25	40.2
1908	50	40.2
1909	42	40.2
1911	47	50.1
1912	43	50.1
1913	69	50.1
1914	53	50.1
1915	25	50.1
1916	49	50.1
1917	42	50.1
1918	46	50.1
1919	77	50.1
1920	49	56.5
1921	76	56.5
1922	67	56.5
1923	53	56.5
1924	25	56.5
1925	64	56.5
1926	68	56.5
1927	44	56.5
1928	54	56.5
1929	65	56.5
1930	69	75.8
1931	82	75.8
1932	66	75.8
1933	85	75.8
1935	69	75.8
1936	83	75.8
1937	75	75.8
1938	71	75.8
1939	82	75.8
1940	68	51.2
1941	64	51.2
1942	29	51.2
1943	58	51.2
1944	39	51.2
1945	39	51.2
1946	39	51.2
1947	59	51.2
1948	49	51.2
1949	68	51.2
1950	41	50.8
1951	23	50.8
1952	63	50.8
1953	44	50.8
1954	47	50.8
1955	69	50.8
1956	52	50.8
1957	37	50.8
1958	51	50.8
1959	81	50.8
1960	52	48.6
1961	64	48.6
1962	32	48.6
1963	53	48.6
1964	62	48.6
1965	40	48.6
1966	54	48.6
1967	38	48.6
1968	41	48.6
1969	50	48.6
1970	67	53.1
1971	50	53.1
1972	33	53.1
1973	54	53.1
1974	54	53.1
1975	49	53.1
1976	69	53.1
1977	49	53.1

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

First to last qualifying date each year at Redfield
Year	First date	Last date
1898	1898-04-16	1898-10-01
1899	1899-04-26	1899-09-02
1900	1900-05-10	1900-09-24
1901	1901-04-26	1901-09-22
1902	1902-04-20	1902-09-07
1903	1903-06-07	1903-09-26
1904	1904-06-17	1904-09-27
1905	1905-06-04	1905-10-07
1906	1906-04-25	1906-09-11
1907	1907-06-16	1907-08-31
1908	1908-04-14	1908-10-15
1909	1909-05-05	1909-10-07
1911	1911-05-08	1911-09-23
1912	1912-05-10	1912-10-06
1913	1913-04-16	1913-10-14
1914	1914-05-21	1914-10-21
1915	1915-05-11	1915-09-06
1916	1916-05-06	1916-09-20
1917	1917-05-17	1917-09-24
1918	1918-05-06	1918-10-17
1919	1919-05-24	1919-09-26
1920	1920-06-08	1920-10-07
1921	1921-03-18	1921-09-04
1922	1922-06-04	1922-10-05
1923	1923-04-19	1923-09-15
1924	1924-04-23	1924-09-04
1925	1925-05-19	1925-09-19
1926	1926-04-15	1926-09-16
1927	1927-04-26	1927-10-21
1928	1928-05-01	1928-10-10
1929	1929-05-14	1929-10-15
1930	1930-04-09	1930-10-11
1931	1931-04-11	1931-10-02
1932	1932-05-13	1932-09-30
1933	1933-05-16	1933-10-14
1935	1935-06-09	1935-09-24
1936	1936-04-13	1936-09-22
1937	1937-05-28	1937-09-23
1938	1938-04-30	1938-10-03
1939	1939-05-04	1939-09-24
1940	1940-05-11	1940-09-22
1941	1941-05-13	1941-09-21
1942	1942-04-14	1942-10-07
1943	1943-03-30	1943-10-11
1944	1944-05-15	1944-09-17
1945	1945-06-21	1945-09-07
1946	1946-03-31	1946-09-04
1947	1947-06-26	1947-10-21
1948	1948-05-18	1948-09-18
1949	1949-05-03	1949-09-25
1950	1950-05-22	1950-10-30
1951	1951-07-07	1951-10-01
1952	1952-04-26	1952-09-29
1953	1953-05-29	1953-10-13
1954	1954-04-14	1954-09-26
1955	1955-04-30	1955-10-10
1956	1956-05-24	1956-10-12
1957	1957-06-20	1957-08-31
1958	1958-04-16	1958-10-15
1959	1959-04-30	1959-09-14
1960	1960-05-31	1960-09-20
1961	1961-05-10	1961-10-16
1962	1962-04-24	1962-09-11
1963	1963-05-07	1963-10-05
1964	1964-04-16	1964-09-13
1965	1965-04-29	1965-09-02
1966	1966-05-04	1966-10-07
1967	1967-05-22	1967-09-25
1968	1968-04-30	1968-09-14
1969	1969-05-14	1969-09-14
1970	1970-05-07	1970-10-05
1971	1971-06-12	1971-09-13
1972	1972-05-16	1972-09-20
1973	1973-06-09	1973-09-01
1974	1974-06-03	1974-09-27
1975	1975-06-25	1975-10-07
1976	1976-06-02	1976-09-30
1977	1977-04-09	1977-09-08

Every Fixed Threshold

Fixed thresholds at Redfield
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	78	85	1933	49
35 C (95 F): Days	76	51	1933	12
40 C (104 F): Days	36	17	1936	2
45 C (113 F): Days	3	2	1931	1
90 F (32.2 C): Days	78	70	1933	26
100 F (37.8 C): Days	63	32	1936	5
110 F (43.3 C): Days	11	8	1931	1
0 C (32 F): Ice days (max	78	100	1950	57
0 C (32 F): Frost days (min	78	216	1907	126
-10 C (14 F): Days with min	78	111	1911	52
-20 C (-4 F): Days with min	78	55	1916	24
-30 C (-22 F): Days with min	66	23	1936	3
-40 C (-40 F): Days with min	4	2	1899	1
20 C (68 F): Tropical nights (min	72	28	1937	9
25 C (77 F): Days with min	15	3	1931	1
10 mm (0.39 in): Days with 10 mm or more rain	69	25	1946	17
25 mm (0.98 in): Days with 25 mm or more rain	67	10	1900	6
50 mm (1.97 in): Days with 50 mm or more rain	34	4	1900	1
100 mm (3.94 in): Days with 100 mm or more rain	2	1	1900	1
10 cm (3.9 in): Days with 10 cm or more snowfall	32	5	1936	2
25 cm (9.8 in): Days with 25 cm or more snowfall	4	1	1940	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1898.

Download the Data

Data for Redfield 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).

Redfield Threshold Days by Year (USC00397047)

Key Facts for Redfield Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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