Appleton Threshold Days by Year (USC00470265)

18 fixed thresholds counted per year at Appleton (USC00470265): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Appleton Thresholds

Appleton: nights with a minimum temperature at or below 0 C (32 F) in 115 years, most in 1917 with 185.
Appleton: nights with a minimum temperature at or below -10 C (14 F) in 115 years, most in 2014 with 91.
Appleton: nights with a minimum temperature at or below -20 C (-4 F) in 115 years, most in 1963 with 35.
Appleton: nights with a minimum temperature at or above 20 C (68 F) in 115 years, most in 1937 with 29.
18 fixed thresholds have at least one qualifying day at Appleton.

Days at or above 30 C (86 F)

114 years with a qualifying day

Days per year at Appleton with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 52 in 1988.

Days at or above 30 C (86 F) per year at Appleton
Year	Days	Decade average
1902	4	15.2
1904	3	15.2
1905	10	15.2
1907	12	15.2
1908	33	15.2
1909	29	15.2
1910	51	29.7
1911	40	29.7
1912	26	29.7
1913	40	29.7
1914	31	29.7
1915	8	29.7
1916	36	29.7
1917	14	29.7
1918	21	29.7
1927	9	7.7
1928	6	7.7
1929	8	7.7
1930	24	27.6
1931	35	27.6
1932	14	27.6
1933	24	27.6
1934	24	27.6
1935	14	27.6
1936	35	27.6
1937	43	27.6
1938	22	27.6
1939	41	27.6
1940	21	26.9
1941	36	26.9
1942	14	26.9
1943	31	26.9
1944	30	26.9
1945	18	26.9
1946	25	26.9
1947	38	26.9
1948	25	26.9
1949	31	26.9
1950	13	22.4
1951	6	22.4
1952	31	22.4
1953	21	22.4
1954	20	22.4
1955	40	22.4
1956	16	22.4
1957	23	22.4
1958	16	22.4
1959	38	22.4
1960	19	21
1961	26	21
1962	20	21
1963	29	21
1964	27	21
1965	11	21
1966	29	21
1967	10	21
1968	27	21
1969	12	21
1970	26	16.7
1971	11	16.7
1972	14	16.7
1973	17	16.7
1974	12	16.7
1975	21	16.7
1976	22	16.7
1977	19	16.7
1978	14	16.7
1979	11	16.7
1980	16	25.9
1981	18	25.9
1982	11	25.9
1983	39	25.9
1985	16	25.9
1986	15	25.9
1987	39	25.9
1988	52	25.9
1989	27	25.9
1990	19	18.7
1991	40	18.7
1992	11	18.7
1993	10	18.7
1994	11	18.7
1995	27	18.7
1996	10	18.7
1997	14	18.7
1998	18	18.7
1999	27	18.7
2000	6	21.1
2001	36	21.1
2002	27	21.1
2003	16	21.1
2004	2	21.1
2005	35	21.1
2006	25	21.1
2007	42	21.1
2008	13	21.1
2009	9	21.1
2010	27	21.8
2011	24	21.8
2012	42	21.8
2013	18	21.8
2014	6	21.8
2015	18	21.8
2016	28	21.8
2017	14	21.8
2018	27	21.8
2019	14	21.8
2020	27	23
2021	26	23
2022	18	23
2023	27	23
2024	20	23
2025	23	23
2026	20	23

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

First to last qualifying date each year at Appleton
Year	First date	Last date
1902	1902-07-05	1902-07-18
1904	1904-07-16	1904-07-18
1905	1905-07-16	1905-08-22
1907	1907-06-16	1907-09-01
1908	1908-06-06	1908-09-26
1909	1909-06-22	1909-08-26
1910	1910-06-13	1910-08-24
1911	1911-05-17	1911-09-01
1912	1912-06-23	1912-09-09
1913	1913-05-01	1913-09-07
1914	1914-05-26	1914-09-01
1915	1915-07-12	1915-08-16
1916	1916-07-02	1916-08-21
1917	1917-07-08	1917-08-19
1918	1918-06-16	1918-08-25
1927	1927-06-29	1927-09-16
1928	1928-07-08	1928-08-17
1929	1929-07-25	1929-09-04
1930	1930-06-24	1930-09-01
1931	1931-06-19	1931-09-21
1932	1932-07-13	1932-09-20
1933	1933-06-07	1933-09-09
1934	1934-05-07	1934-08-19
1935	1935-07-05	1935-09-25
1936	1936-05-10	1936-09-15
1937	1937-05-31	1937-09-24
1938	1938-06-21	1938-08-24
1939	1939-05-20	1939-09-16
1940	1940-06-04	1940-09-21
1941	1941-05-21	1941-09-22
1942	1942-06-29	1942-09-02
1943	1943-06-04	1943-08-23
1944	1944-05-30	1944-08-16
1945	1945-06-24	1945-09-08
1946	1946-06-17	1946-08-18
1947	1947-06-28	1947-09-18
1948	1948-05-20	1948-09-17
1949	1949-05-03	1949-08-26
1950	1950-05-24	1950-08-16
1951	1951-07-24	1951-08-30
1952	1952-05-01	1952-09-28
1953	1953-06-12	1953-09-03
1954	1954-06-09	1954-09-06
1955	1955-05-03	1955-09-18
1956	1956-05-22	1956-08-29
1957	1957-06-16	1957-09-01
1958	1958-06-29	1958-08-30
1959	1959-05-02	1959-09-09
1960	1960-06-27	1960-09-08
1961	1961-06-05	1961-09-10
1962	1962-05-15	1962-08-29
1963	1963-06-02	1963-10-06
1964	1964-05-22	1964-09-07
1965	1965-05-25	1965-08-15
1966	1966-05-26	1966-09-01
1967	1967-06-14	1967-08-16
1968	1968-06-05	1968-09-03
1969	1969-05-28	1969-08-30
1970	1970-04-29	1970-09-07
1971	1971-06-05	1971-08-09
1972	1972-05-20	1972-08-30
1973	1973-06-10	1973-09-03
1974	1974-07-01	1974-08-26
1975	1975-05-18	1975-08-12
1976	1976-06-07	1976-09-08
1977	1977-05-13	1977-08-27
1978	1978-05-26	1978-09-11
1979	1979-06-15	1979-08-07
1980	1980-04-22	1980-08-01
1981	1981-06-05	1981-09-11
1982	1982-07-05	1982-09-11
1983	1983-06-21	1983-09-09
1985	1985-04-21	1985-09-07
1986	1986-05-28	1986-08-16
1987	1987-05-10	1987-08-15
1988	1988-05-28	1988-09-17
1989	1989-05-24	1989-08-27
1990	1990-04-25	1990-09-06
1991	1991-04-06	1991-09-09
1992	1992-05-01	1992-08-25
1993	1993-05-09	1993-08-26
1994	1994-05-21	1994-08-25
1995	1995-06-15	1995-09-05
1996	1996-05-18	1996-09-05
1997	1997-06-10	1997-08-02
1998	1998-05-18	1998-09-13
1999	1999-05-28	1999-09-04
2000	2000-06-08	2000-09-02
2001	2001-05-17	2001-08-12
2002	2002-05-28	2002-09-10
2003	2003-06-24	2003-09-09
2004	2004-06-09	2004-07-21
2005	2005-06-07	2005-10-03
2006	2006-05-29	2006-08-05
2007	2007-04-30	2007-10-09
2008	2008-06-07	2008-09-03
2009	2009-05-21	2009-08-15
2010	2010-05-24	2010-08-31
2011	2011-05-31	2011-09-02
2012	2012-05-20	2012-09-05
2013	2013-05-01	2013-09-11
2014	2014-05-27	2014-08-23
2015	2015-07-18	2015-09-07
2016	2016-05-07	2016-09-07
2017	2017-06-11	2017-09-26
2018	2018-05-26	2018-09-18
2019	2019-06-01	2019-08-06
2020	2020-05-26	2020-08-27
2021	2021-05-02	2021-08-29
2022	2022-05-11	2022-09-02
2023	2023-05-31	2023-10-02
2024	2024-05-19	2024-09-18
2025	2025-06-22	2025-10-05
2026	2026-05-17	2026-09-02

Every Fixed Threshold

Fixed thresholds at Appleton
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	114	52	1988	20
35 C (95 F): Days	59	15	1988	1
40 C (104 F): Days	1	3	1936	3
90 F (32.2 C): Days	108	43	1988	10
100 F (37.8 C): Days	10	8	1936	3
0 C (32 F): Ice days (max	114	99	1996	39
0 C (32 F): Frost days (min	115	185	1917	92
-10 C (14 F): Days with min	115	91	2014	34
-20 C (-4 F): Days with min	115	35	1963	7
-30 C (-22 F): Days with min	29	6	1936	2
20 C (68 F): Tropical nights (min	115	29	1937	17
25 C (77 F): Days with min	21	5	1988	1
10 mm (0.39 in): Days with 10 mm or more rain	113	41	2010	27
25 mm (0.98 in): Days with 25 mm or more rain	113	12	2015	11
50 mm (1.97 in): Days with 50 mm or more rain	61	5	2018	3
100 mm (3.94 in): Days with 100 mm or more rain	3	1	1990	1
10 cm (3.9 in): Days with 10 cm or more snowfall	84	11	1959	2
25 cm (9.8 in): Days with 25 cm or more snowfall	10	1	1929	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1902.

Download the Data

Data for Appleton 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).

Appleton Threshold Days by Year (USC00470265)

Key Facts for Appleton Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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