St Petersburg Threshold Days by Year (USC00087886)

12 fixed thresholds counted per year at St Petersburg (USC00087886): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for St Petersburg Thresholds

St Petersburg: days with a maximum temperature at or above 30 C (86 F) in 102 years, most in 1942 with 178.
St Petersburg: days with a maximum temperature at or above 90 F (32.2 C) in 102 years, most in 2010 with 130.
St Petersburg: nights with a minimum temperature at or above 20 C (68 F) in 102 years, most in 1994 with 227.
St Petersburg: nights with a minimum temperature at or above 25 C (77 F) in 102 years, most in 2005 with 96.
12 fixed thresholds have at least one qualifying day at St Petersburg.

Days at or above 30 C (86 F)

102 years with a qualifying day

Days per year at St Petersburg with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 178 in 1942.

Days at or above 30 C (86 F) per year at St Petersburg
Year	Days	Decade average
1892	160	166.5
1893	173	166.5
1915	151	139.6
1916	130	139.6
1917	121	139.6
1918	145	139.6
1919	151	139.6
1920	120	141.6
1921	145	141.6
1922	130	141.6
1923	121	141.6
1924	139	141.6
1925	163	141.6
1926	138	141.6
1927	162	141.6
1928	141	141.6
1929	157	141.6
1930	141	152.6
1931	145	152.6
1932	158	152.6
1933	163	152.6
1934	159	152.6
1935	168	152.6
1936	158	152.6
1937	154	152.6
1938	138	152.6
1939	142	152.6
1940	120	157.7
1941	168	157.7
1942	178	157.7
1943	146	157.7
1944	158	157.7
1945	152	157.7
1946	163	157.7
1947	155	157.7
1948	163	157.7
1949	174	157.7
1950	148	149.2
1951	154	149.2
1952	142	149.2
1953	148	149.2
1954	152	149.2
1955	147	149.2
1956	152	149.2
1957	141	149.2
1958	154	149.2
1959	154	149.2
1960	154	148.4
1961	161	148.4
1962	154	148.4
1963	142	148.4
1964	151	148.4
1965	142	148.4
1966	142	148.4
1967	146	148.4
1968	131	148.4
1969	161	148.4
1970	163	155.6
1971	164	155.6
1972	171	155.6
1973	152	155.6
1974	121	155.6
1975	178	155.6
1976	140	155.6
1977	161	155.6
1978	160	155.6
1979	146	155.6
1980	150	151.2
1981	163	151.2
1982	150	151.2
1983	139	151.2
1984	155	151.2
1985	169	151.2
1986	168	151.2
1987	143	151.2
1988	124	151.2
1989	151	151.2
1990	152	136.2
1991	154	136.2
1992	119	136.2
1993	129	136.2
1994	131	136.2
1995	134	136.2
1996	132	136.2
1997	128	136.2
1998	140	136.2
1999	143	136.2
2000	139	142.3
2001	118	142.3
2002	154	142.3
2003	129	142.3
2004	130	142.3
2005	140	142.3
2006	139	142.3
2007	157	142.3
2008	149	142.3
2009	168	142.3
2010	176	158.6
2011	159	158.6
2012	144	158.6
2013	160	158.6
2014	154	158.6

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

First to last qualifying date each year at St Petersburg
Year	First date	Last date
1892	1892-04-01	1892-10-22
1893	1893-04-05	1893-10-27
1915	1915-05-02	1915-11-12
1916	1916-04-18	1916-10-16
1917	1917-04-03	1917-10-29
1918	1918-03-09	1918-10-30
1919	1919-04-16	1919-11-01
1920	1920-04-20	1920-09-28
1921	1921-03-14	1921-10-19
1922	1922-04-07	1922-10-31
1923	1923-03-21	1923-10-04
1924	1924-04-17	1924-10-14
1925	1925-03-09	1925-10-30
1926	1926-04-10	1926-10-23
1927	1927-03-17	1927-10-22
1928	1928-04-22	1928-10-23
1929	1929-03-22	1929-11-08
1930	1930-04-17	1930-10-17
1931	1931-04-30	1931-11-18
1932	1932-04-22	1932-11-08
1933	1933-04-28	1933-11-05
1934	1934-03-07	1934-10-23
1935	1935-03-20	1935-11-11
1936	1936-04-14	1936-11-04
1937	1937-03-22	1937-10-19
1938	1938-03-25	1938-11-18
1939	1939-04-27	1939-10-28
1940	1940-04-07	1940-10-29
1941	1941-04-19	1941-11-04
1942	1942-04-09	1942-12-31
1943	1943-03-02	1943-11-07
1944	1944-03-06	1944-10-08
1945	1945-03-16	1945-11-02
1946	1946-04-06	1946-11-26
1947	1947-04-04	1947-10-28
1948	1948-03-01	1948-11-22
1949	1949-03-24	1949-10-30
1950	1950-04-27	1950-10-23
1951	1951-04-21	1951-10-27
1952	1952-03-22	1952-10-15
1953	1953-04-05	1953-10-14
1954	1954-04-04	1954-10-14
1955	1955-04-18	1955-10-24
1956	1956-04-27	1956-10-10
1957	1957-04-03	1957-11-16
1958	1958-04-24	1958-11-28
1959	1959-04-09	1959-11-05
1960	1960-04-01	1960-10-27
1961	1961-02-20	1961-11-15
1962	1962-04-10	1962-10-16
1963	1963-03-19	1963-10-13
1964	1964-03-14	1964-10-04
1965	1965-04-05	1965-10-20
1966	1966-04-28	1966-10-23
1967	1967-04-04	1967-10-03
1968	1968-04-07	1968-10-16
1969	1969-04-16	1969-10-23
1970	1970-04-21	1970-10-29
1971	1971-04-19	1971-11-02
1972	1972-04-16	1972-11-13
1973	1973-05-07	1973-11-22
1974	1974-03-10	1974-11-19
1975	1975-02-22	1975-11-10
1976	1976-03-29	1976-10-20
1977	1977-04-03	1977-10-25
1978	1978-04-08	1978-12-08
1979	1979-04-03	1979-10-23
1980	1980-03-27	1980-10-19
1981	1981-04-02	1981-10-23
1982	1982-03-19	1982-12-03
1983	1983-05-10	1983-10-23
1984	1984-01-25	1984-11-05
1985	1985-04-22	1985-12-11
1986	1986-04-28	1986-11-25
1987	1987-04-23	1987-10-19
1988	1988-05-12	1988-10-04
1989	1989-03-19	1989-11-06
1990	1990-04-19	1990-10-23
1991	1991-04-11	1991-12-02
1992	1992-05-16	1992-09-29
1993	1993-05-07	1993-10-22
1994	1994-04-20	1994-10-09
1995	1995-04-30	1995-10-14
1996	1996-04-27	1996-11-07
1997	1997-05-02	1997-10-15
1998	1998-04-28	1998-11-18
1999	1999-04-03	1999-10-19
2000	2000-04-30	2000-10-07
2001	2001-04-23	2001-10-13
2002	2002-03-25	2002-10-29
2003	2003-05-05	2003-11-05
2004	2004-04-30	2004-11-03
2005	2005-05-13	2005-10-22
2006	2006-04-20	2006-11-01
2007	2007-04-13	2007-10-23
2008	2008-04-02	2008-11-13
2009	2009-04-12	2009-10-31
2010	2010-04-23	2010-11-04
2011	2011-04-08	2011-10-27
2012	2012-03-21	2012-10-26
2013	2013-04-10	2013-10-31
2014	2014-04-14	2014-10-30

Every Fixed Threshold

Fixed thresholds at St Petersburg
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	102	178	1942	154
35 C (95 F): Days	71	18	2010	13
90 F (32.2 C): Days	102	130	2010	96
100 F (37.8 C): Days	3	1	1985	1
0 C (32 F): Frost days (min	30	4	1989	1
20 C (68 F): Tropical nights (min	102	227	1994	178
25 C (77 F): Days with min	102	96	2005	64
10 mm (0.39 in): Days with 10 mm or more rain	100	71	1959	43
25 mm (0.98 in): Days with 25 mm or more rain	100	30	1953	15
50 mm (1.97 in): Days with 50 mm or more rain	99	11	1953	4
100 mm (3.94 in): Days with 100 mm or more rain	49	5	1997	1
200 mm (7.87 in): Days with 200 mm or more rain	4	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 1892.

Download the Data

Data for St Petersburg 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).

St Petersburg Threshold Days by Year (USC00087886)

Key Facts for St Petersburg Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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