St Peter Threshold Days by Year (USC00217405)

20 fixed thresholds counted per year at St Peter (USC00217405): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for St Peter Thresholds

St Peter: nights with a minimum temperature at or below 0 C (32 F) in 116 years, most in 2018 with 185.
St Peter: nights with a minimum temperature at or below -10 C (14 F) in 116 years, most in 1895 with 100.
St Peter: nights with a minimum temperature at or below -20 C (-4 F) in 116 years, most in 2014 with 46.
St Peter: days with a maximum temperature at or above 30 C (86 F) in 114 years, most in 1921 with 78.
20 fixed thresholds have at least one qualifying day at St Peter.

Days at or above 30 C (86 F)

114 years with a qualifying day

Days per year at St Peter with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 78 in 1921.

Days at or above 30 C (86 F) per year at St Peter
Year	Days	Decade average
1894	52	32.8
1895	53	32.8
1898	15	32.8
1899	11	32.8
1901	63	34
1902	20	34
1904	15	34
1905	30	34
1908	39	34
1909	37	34
1910	68	42.4
1911	47	42.4
1912	33	42.4
1914	53	42.4
1915	16	42.4
1916	43	42.4
1918	37	42.4
1920	49	49.3
1921	78	49.3
1922	58	49.3
1923	56	49.3
1924	25	49.3
1925	61	49.3
1926	44	49.3
1927	41	49.3
1928	39	49.3
1929	42	49.3
1930	50	57.6
1931	61	57.6
1932	43	57.6
1933	68	57.6
1934	66	57.6
1935	50	57.6
1936	60	57.6
1937	54	57.6
1938	61	57.6
1939	63	57.6
1940	38	42.5
1941	44	42.5
1942	19	42.5
1943	35	42.5
1944	34	42.5
1945	32	42.5
1946	33	42.5
1947	61	42.5
1948	66	42.5
1949	63	42.5
1950	37	41.7
1951	23	41.7
1952	54	41.7
1953	44	41.7
1954	35	41.7
1955	53	41.7
1956	39	41.7
1957	32	41.7
1958	38	41.7
1959	62	41.7
1960	38	31.6
1961	35	31.6
1962	27	31.6
1963	34	31.6
1964	45	31.6
1965	22	31.6
1966	41	31.6
1967	14	31.6
1968	29	31.6
1969	31	31.6
1970	49	39.2
1971	30	39.2
1972	33	39.2
1973	38	39.2
1974	35	39.2
1975	51	39.2
1976	53	39.2
1977	38	39.2
1979	26	39.2
1980	61	37
1981	19	37
1982	28	37
1985	38	37
1986	29	37
1989	47	37
1990	36	21.2
1991	31	21.2
1992	13	21.2
1993	9	21.2
1994	13	21.2
1995	29	21.2
1996	16	21.2
1997	20	21.2
1998	24	21.2
2000	17	32.3
2001	37	32.3
2002	39	32.3
2003	26	32.3
2007	54	32.3
2008	21	32.3
2010	41	26.7
2011	40	26.7
2012	55	26.7
2013	30	26.7
2014	13	26.7
2015	15	26.7
2016	19	26.7
2017	19	26.7
2018	24	26.7
2019	11	26.7
2020	31	29.3
2021	38	29.3
2022	31	29.3
2023	45	29.3
2024	16	29.3
2025	28	29.3
2026	16	29.3

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

First to last qualifying date each year at St Peter
Year	First date	Last date
1894	1894-05-14	1894-09-28
1895	1895-05-08	1895-09-20
1898	1898-06-23	1898-09-29
1899	1899-07-21	1899-09-04
1901	1901-04-30	1901-09-05
1902	1902-05-18	1902-08-27
1904	1904-05-22	1904-09-17
1905	1905-06-04	1905-10-04
1908	1908-06-26	1908-09-25
1909	1909-05-05	1909-10-07
1910	1910-04-27	1910-10-17
1911	1911-05-09	1911-09-01
1912	1912-06-24	1912-09-10
1914	1914-05-25	1914-09-20
1915	1915-06-26	1915-09-06
1916	1916-05-06	1916-09-05
1918	1918-05-03	1918-10-12
1920	1920-05-22	1920-09-26
1921	1921-04-24	1921-09-10
1922	1922-05-10	1922-10-05
1923	1923-06-01	1923-09-27
1924	1924-04-24	1924-08-30
1925	1925-04-22	1925-09-20
1926	1926-05-01	1926-09-17
1927	1927-06-08	1927-09-15
1928	1928-05-09	1928-10-11
1929	1929-05-28	1929-09-23
1930	1930-05-21	1930-10-10
1931	1931-05-15	1931-09-20
1932	1932-05-13	1932-09-18
1933	1933-05-18	1933-09-25
1934	1934-04-28	1934-09-13
1935	1935-06-13	1935-09-24
1936	1936-05-06	1936-09-22
1937	1937-06-22	1937-09-23
1938	1938-05-01	1938-10-16
1939	1939-04-24	1939-09-22
1940	1940-05-12	1940-09-19
1941	1941-05-14	1941-09-20
1942	1942-06-05	1942-09-11
1943	1943-05-28	1943-08-31
1944	1944-05-14	1944-09-18
1945	1945-06-22	1945-09-08
1946	1946-06-06	1946-08-21
1947	1947-06-09	1947-10-22
1948	1948-05-19	1948-09-20
1949	1949-05-03	1949-08-27
1950	1950-05-23	1950-10-18
1951	1951-07-07	1951-10-01
1952	1952-04-27	1952-09-27
1953	1953-05-29	1953-10-14
1954	1954-04-14	1954-09-01
1955	1955-05-02	1955-09-18
1956	1956-05-12	1956-10-13
1957	1957-05-01	1957-09-01
1958	1958-05-10	1958-10-15
1959	1959-05-01	1959-09-08
1960	1960-04-22	1960-09-07
1961	1961-05-11	1961-10-17
1962	1962-04-24	1962-10-11
1963	1963-05-08	1963-10-07
1964	1964-04-17	1964-09-10
1965	1965-05-03	1965-08-18
1966	1966-05-27	1966-10-09
1967	1967-05-19	1967-08-18
1968	1968-05-01	1968-10-16
1969	1969-05-28	1969-10-05
1970	1970-04-27	1970-10-06
1971	1971-05-15	1971-10-01
1972	1972-05-17	1972-09-17
1973	1973-06-02	1973-09-11
1974	1974-04-27	1974-09-27
1975	1975-05-18	1975-10-13
1976	1976-05-20	1976-09-13
1977	1977-04-09	1977-09-08
1979	1979-05-17	1979-09-04
1980	1980-04-21	1980-10-07
1981	1981-06-07	1981-09-13
1982	1982-05-04	1982-09-11
1985	1985-04-17	1985-09-20
1986	1986-05-29	1986-09-26
1989	1989-05-16	1989-10-01
1990	1990-04-23	1990-09-26
1991	1991-04-06	1991-08-31
1992	1992-04-30	1992-10-03
1993	1993-06-11	1993-09-12
1994	1994-04-19	1994-09-14
1995	1995-06-16	1995-10-12
1996	1996-05-18	1996-08-25
1997	1997-06-16	1997-10-04
1998	1998-05-15	1998-09-20
2000	2000-05-05	2000-09-19
2001	2001-05-15	2001-10-03
2002	2002-04-16	2002-10-01
2003	2003-04-15	2003-09-09
2007	2007-04-30	2007-10-07
2008	2008-05-26	2008-09-02
2010	2010-05-24	2010-10-10
2011	2011-05-11	2011-10-06
2012	2012-05-15	2012-09-12
2013	2013-05-15	2013-09-10
2014	2014-05-30	2014-09-05
2015	2015-06-10	2015-09-06
2016	2016-05-07	2016-08-11
2017	2017-05-15	2017-09-25
2018	2018-05-18	2018-09-17
2019	2019-06-01	2019-09-18
2020	2020-06-02	2020-09-26
2021	2021-05-02	2021-09-30
2022	2022-05-10	2022-09-21
2023	2023-04-13	2023-10-03
2024	2024-04-14	2024-08-30
2025	2025-05-10	2025-10-05
2026	2026-04-23	2026-10-12

Every Fixed Threshold

Fixed thresholds at St Peter
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	114	78	1921	16
35 C (95 F): Days	84	23	1931	1
40 C (104 F): Days	7	7	1936	2
90 F (32.2 C): Days	114	52	1921	4
100 F (37.8 C): Days	33	14	1936	1
0 C (32 F): Ice days (max	114	99	2018	38
0 C (32 F): Frost days (min	116	185	2018	100
-10 C (14 F): Days with min	116	100	1895	38
-20 C (-4 F): Days with min	116	46	2014	13
-30 C (-22 F): Days with min	70	12	1936	1
-40 C (-40 F): Days with min	1	1	1912	1
20 C (68 F): Tropical nights (min	114	33	1949	2
25 C (77 F): Days with min	27	8	1921	1
10 mm (0.39 in): Days with 10 mm or more rain	112	37	1970	8
25 mm (0.98 in): Days with 25 mm or more rain	110	15	2016	3
50 mm (1.97 in): Days with 50 mm or more rain	80	4	1986	1
100 mm (3.94 in): Days with 100 mm or more rain	11	2	2020	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	1968	1
10 cm (3.9 in): Days with 10 cm or more snowfall	71	7	1985	2
25 cm (9.8 in): Days with 25 cm or more snowfall	12	2	1952	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1894.

Download the Data

Data for St Peter 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).

St Peter Threshold Days by Year (USC00217405)

Key Facts for St Peter Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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