St Lawrence Post Office Threshold Days by Year

12 fixed thresholds counted per year at St Lawrence Post Office (ASN00033065): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for St Lawrence Post Office Thresholds

St Lawrence Post Office: days with 10 mm (0.39 in) or more of precipitation in 125 years, most in 1956 with 51.
St Lawrence Post Office: days with 25 mm (0.98 in) or more of precipitation in 125 years, most in 1890 with 25.
St Lawrence Post Office: days with 50 mm (1.97 in) or more of precipitation in 118 years, most in 1906 with 13.
St Lawrence Post Office: days with 100 mm (3.94 in) or more of precipitation in 75 years, most in 1918 with 6.
12 fixed thresholds have at least one qualifying day at St Lawrence Post Office.

Days at or above 30 C (86 F)

43 years with a qualifying day

Days per year at St Lawrence Post Office with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 184 in 2002.

Days at or above 30 C (86 F) per year at St Lawrence Post Office
Year	Days	Decade average
1957	167	139
1958	136	139
1959	114	139
1960	101	128
1961	95	128
1962	127	128
1963	113	128
1964	157	128
1965	135	128
1968	141	128
1969	155	128
1970	147	128.8
1971	135	128.8
1972	136	128.8
1973	142	128.8
1974	92	128.8
1975	129	128.8
1976	130	128.8
1977	125	128.8
1978	130	128.8
1979	122	128.8
1980	153	135
1981	117	135
1992	151	147.5
1993	150	147.5
1994	147	147.5
1995	160	147.5
1996	159	147.5
1997	139	147.5
1998	153	147.5
1999	121	147.5
2000	119	157
2001	166	157
2002	184	157
2003	166	157
2004	180	157
2005	168	157
2006	148	157
2007	144	157
2008	137	157
2009	158	157
2010	110	122
2011	134	122

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

First to last qualifying date each year at St Lawrence Post Office
Year	First date	Last date
1957	1957-01-01	1957-12-31
1958	1958-01-01	1958-12-31
1959	1959-01-01	1959-12-31
1960	1960-01-01	1960-12-29
1961	1961-01-01	1961-12-31
1962	1962-01-01	1962-12-31
1963	1963-01-02	1963-12-31
1964	1964-01-01	1964-12-31
1965	1965-01-01	1965-12-31
1968	1968-01-01	1968-12-30
1969	1969-01-01	1969-12-31
1970	1970-01-01	1970-12-31
1971	1971-01-01	1971-12-31
1972	1972-01-01	1972-12-31
1973	1973-01-01	1973-12-31
1974	1974-01-01	1974-12-31
1975	1975-01-01	1975-12-31
1976	1976-01-01	1976-12-31
1977	1977-01-01	1977-12-31
1978	1978-01-02	1978-12-31
1979	1979-01-01	1979-12-31
1980	1980-01-01	1980-12-30
1981	1981-01-01	1981-12-31
1992	1992-01-01	1992-12-31
1993	1993-01-01	1993-12-31
1994	1994-01-01	1994-12-31
1995	1995-01-01	1995-12-31
1996	1996-01-01	1996-12-31
1997	1997-01-01	1997-12-31
1998	1998-01-01	1998-12-31
1999	1999-01-01	1999-12-31
2000	2000-01-01	2000-12-31
2001	2001-01-05	2001-12-31
2002	2002-01-01	2002-12-31
2003	2003-01-01	2003-12-31
2004	2004-01-01	2004-12-31
2005	2005-01-01	2005-12-31
2006	2006-01-01	2006-12-30
2007	2007-01-01	2007-12-31
2008	2008-01-01	2008-12-31
2009	2009-01-01	2009-12-31
2010	2010-01-02	2010-12-31
2011	2011-01-01	2011-12-31

Every Fixed Threshold

Fixed thresholds at St Lawrence Post Office
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	43	184	2002	134
35 C (95 F): Days	40	24	2002	3
40 C (104 F): Days	4	2	1964	1
90 F (32.2 C): Days	43	98	2002	37
100 F (37.8 C): Days	12	4	1995	1
20 C (68 F): Tropical nights (min	44	173	2005	136
25 C (77 F): Days with min	44	26	2002	9
10 mm (0.39 in): Days with 10 mm or more rain	125	51	1956	23
25 mm (0.98 in): Days with 25 mm or more rain	125	25	1890	11
50 mm (1.97 in): Days with 50 mm or more rain	118	13	1906	4
100 mm (3.94 in): Days with 100 mm or more rain	75	6	1918	1
200 mm (7.87 in): Days with 200 mm or more rain	23	3	1918	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1957.

Download the Data

Data for St Lawrence Post Office 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 Lawrence Post Office Threshold Days by Year

Key Facts for St Lawrence Post Office Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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