Petersburg 1 Threshold Days by Year (USW00025329)

11 fixed thresholds counted per year at Petersburg 1 (USW00025329): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Petersburg 1 Thresholds

Petersburg 1: nights with a minimum temperature at or below 0 C (32 F) in 71 years, most in 1972 with 175.
Petersburg 1: nights with a minimum temperature at or below -10 C (14 F) in 71 years, most in 1950 with 46.
Petersburg 1: days with 10 mm (0.39 in) or more of precipitation in 71 years, most in 2025 with 125.
Petersburg 1: days with 25 mm (0.98 in) or more of precipitation in 71 years, most in 1976 with 49.
11 fixed thresholds have at least one qualifying day at Petersburg 1.

Nights at or below 0 C (32 F)

71 years with a qualifying day

Days per year at Petersburg 1 with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 175 in 1972.

Nights at or below 0 C (32 F) per year at Petersburg 1
Year	Days	Decade average
1930	129	130.5
1931	109	130.5
1932	159	130.5
1937	134	130.5
1938	122	130.5
1939	130	130.5
1942	117	137.4
1943	126	137.4
1944	114	137.4
1945	142	137.4
1946	155	137.4
1947	135	137.4
1948	173	137.4
1950	144	139.3
1951	163	139.3
1952	124	139.3
1953	119	139.3
1954	140	139.3
1955	149	139.3
1956	155	139.3
1957	139	139.3
1958	126	139.3
1959	134	139.3
1960	105	138.2
1961	126	138.2
1962	121	138.2
1963	123	138.2
1964	156	138.2
1965	150	138.2
1966	155	138.2
1967	156	138.2
1968	150	138.2
1969	140	138.2
1970	106	127
1971	145	127
1972	175	127
1973	156	127
1974	132	127
1975	123	127
1976	89	127
1977	90	127
1981	55	103.7
1984	103	103.7
1985	146	103.7
1986	103	103.7
1987	95	103.7
1988	110	103.7
1989	114	103.7
1990	141	117.7
1991	100	117.7
1992	121	117.7
1993	95	117.7
1994	128	117.7
1995	121	117.7
2004	105	117.3
2005	88	117.3
2006	140	117.3
2007	119	117.3
2008	114	117.3
2009	138	117.3
2010	104	101.3
2011	134	101.3
2012	128	101.3
2013	99	101.3
2014	91	101.3
2015	82	101.3
2016	70	101.3
2018	102	101.3
2022	110	94
2025	99	94
2026	73	94

For each year, a bar from the first to the last day at Petersburg 1 meeting 0 C (32 F).

First to last qualifying date each year at Petersburg 1
Year	First date	Last date
1930	1930-01-01	1930-12-28
1931	1931-01-06	1931-12-31
1932	1932-01-01	1932-12-31
1937	1937-01-01	1937-12-31
1938	1938-01-01	1938-12-31
1939	1939-01-01	1939-12-31
1942	1942-01-01	1942-12-31
1943	1943-01-01	1943-12-31
1944	1944-01-01	1944-12-31
1945	1945-01-01	1945-12-26
1946	1946-01-03	1946-12-31
1947	1947-01-01	1947-12-31
1948	1948-01-01	1948-12-31
1950	1950-01-01	1950-12-31
1951	1951-01-01	1951-12-31
1952	1952-01-01	1952-12-27
1953	1953-01-05	1953-12-31
1954	1954-01-01	1954-12-31
1955	1955-01-01	1955-12-31
1956	1956-01-01	1956-12-22
1957	1957-01-02	1957-12-30
1958	1958-01-04	1958-12-31
1959	1959-01-01	1959-12-31
1960	1960-01-01	1960-12-31
1961	1961-01-01	1961-12-30
1962	1962-01-06	1962-12-31
1963	1963-01-01	1963-12-28
1964	1964-01-02	1964-12-31
1965	1965-01-01	1965-12-31
1966	1966-01-01	1966-12-31
1967	1967-01-01	1967-12-26
1968	1968-01-01	1968-12-31
1969	1969-01-01	1969-12-26
1970	1970-01-02	1970-12-31
1971	1971-01-01	1971-12-31
1972	1972-01-01	1972-12-30
1973	1973-01-01	1973-12-31
1974	1974-01-01	1974-12-30
1975	1975-01-01	1975-12-31
1976	1976-01-01	1976-12-31
1977	1977-01-01	1977-12-31
1981	1981-01-29	1981-12-31
1984	1984-01-01	1984-12-31
1985	1985-01-01	1985-12-31
1986	1986-01-01	1986-12-29
1987	1987-01-01	1987-12-31
1988	1988-01-01	1988-12-31
1989	1989-01-01	1989-12-20
1990	1990-01-01	1990-12-31
1991	1991-01-01	1991-12-30
1992	1992-01-06	1992-12-31
1993	1993-01-01	1993-12-26
1994	1994-01-02	1994-12-31
1995	1995-01-01	1995-12-31
2004	2004-01-01	2004-12-31
2005	2005-01-01	2005-12-31
2006	2006-01-01	2006-12-30
2007	2007-01-04	2007-12-31
2008	2008-01-03	2008-12-31
2009	2009-01-01	2009-12-31
2010	2010-01-01	2010-12-31
2011	2011-01-01	2011-12-31
2012	2012-01-01	2012-12-29
2013	2013-01-03	2013-12-22
2014	2014-01-03	2014-12-31
2015	2015-01-02	2015-12-31
2016	2016-01-03	2016-12-31
2018	2018-01-01	2018-12-30
2022	2022-01-01	2022-12-31
2025	2025-01-01	2025-12-31
2026	2026-01-01	2026-10-11

Every Fixed Threshold

Fixed thresholds at Petersburg 1
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
0 C (32 F): Ice days (max	69	60	1950	20
0 C (32 F): Frost days (min	71	175	1972	73
-10 C (14 F): Days with min	71	46	1950	3
-20 C (-4 F): Days with min	22	9	1972	1
10 mm (0.39 in): Days with 10 mm or more rain	71	125	2025	67
25 mm (0.98 in): Days with 25 mm or more rain	71	49	1976	18
50 mm (1.97 in): Days with 50 mm or more rain	70	12	1974	6
100 mm (3.94 in): Days with 100 mm or more rain	23	2	1961	1
10 cm (3.9 in): Days with 10 cm or more snowfall	63	20	2009	9
25 cm (9.8 in): Days with 25 cm or more snowfall	30	6	1972	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	2007	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1930.

Download the Data

Data for Petersburg 1 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).

Petersburg 1 Threshold Days by Year (USW00025329)

Key Facts for Petersburg 1 Thresholds

Nights at or below 0 C (32 F)

Every Fixed Threshold

Download the Data

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