Foxboro Threshold Days by Year (USC00472889)

18 fixed thresholds counted per year at Foxboro (USC00472889): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Foxboro Thresholds

Foxboro: days with 10 mm (0.39 in) or more of precipitation in 42 years, most in 1968 with 42.
Foxboro: days with 25 mm (0.98 in) or more of precipitation in 42 years, most in 1986 with 14.
Foxboro: days with a maximum temperature at or above 30 C (86 F) in 38 years, most in 1988 with 48.
Foxboro: days with a maximum temperature at or below 0 C (32 F) in 38 years, most in 1996 with 117.
18 fixed thresholds have at least one qualifying day at Foxboro.

Days at or above 30 C (86 F)

38 years with a qualifying day

Days per year at Foxboro with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 48 in 1988.

Days at or above 30 C (86 F) per year at Foxboro
Year	Days	Decade average
1965	9	15.4
1966	24	15.4
1967	9	15.4
1968	11	15.4
1969	24	15.4
1970	37	20.7
1971	15	20.7
1972	11	20.7
1973	15	20.7
1974	18	20.7
1975	26	20.7
1976	39	20.7
1977	17	20.7
1978	19	20.7
1979	10	20.7
1980	22	20.1
1981	8	20.1
1982	1	20.1
1983	27	20.1
1984	13	20.1
1985	4	20.1
1986	12	20.1
1987	42	20.1
1988	48	20.1
1989	24	20.1
1990	7	7.4
1991	13	7.4
1992	5	7.4
1993	5	7.4
1994	4	7.4
1995	12	7.4
1996	6	7.4
2004	9	20.3
2006	24	20.3
2007	28	20.3
2010	10	12.7
2012	26	12.7
2014	2	12.7

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

First to last qualifying date each year at Foxboro
Year	First date	Last date
1965	1965-06-27	1965-08-14
1966	1966-05-26	1966-08-28
1967	1967-07-10	1967-08-24
1968	1968-06-04	1968-08-22
1969	1969-05-27	1969-08-29
1970	1970-05-18	1970-09-07
1971	1971-06-04	1971-09-03
1972	1972-05-17	1972-08-20
1973	1973-06-09	1973-08-28
1974	1974-06-28	1974-08-20
1975	1975-05-21	1975-08-24
1976	1976-06-03	1976-09-12
1977	1977-04-10	1977-07-24
1978	1978-05-18	1978-09-06
1979	1979-05-17	1979-09-04
1980	1980-05-03	1980-09-08
1981	1981-07-04	1981-07-19
1982	1982-07-05	1982-07-05
1983	1983-06-22	1983-09-03
1984	1984-07-09	1984-09-19
1985	1985-06-08	1985-08-07
1986	1986-05-27	1986-09-27
1987	1987-04-17	1987-09-27
1988	1988-05-26	1988-08-16
1989	1989-06-19	1989-08-11
1990	1990-06-13	1990-08-16
1991	1991-05-14	1991-08-30
1992	1992-05-01	1992-10-02
1993	1993-06-21	1993-08-26
1994	1994-05-20	1994-08-24
1995	1995-06-16	1995-07-30
1996	1996-06-13	1996-08-06
2004	2004-04-28	2004-09-02
2006	2006-06-16	2006-08-27
2007	2007-05-10	2007-09-06
2010	2010-05-25	2010-08-30
2012	2012-05-18	2012-09-11
2014	2014-07-06	2014-07-21

Every Fixed Threshold

Fixed thresholds at Foxboro
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	38	48	1988	2
35 C (95 F): Days	10	12	1988	1
40 C (104 F): Days	1	1	1988	1
90 F (32.2 C): Days	34	37	1988	7
100 F (37.8 C): Days	4	6	1988	3
0 C (32 F): Ice days (max	38	117	1996	111
0 C (32 F): Frost days (min	38	238	1988	191
-10 C (14 F): Days with min	38	120	1989	98
-20 C (-4 F): Days with min	38	68	1989	56
-30 C (-22 F): Days with min	36	22	1988	16
-40 C (-40 F): Days with min	5	2	1996	2
20 C (68 F): Tropical nights (min	28	6	1975	1
10 mm (0.39 in): Days with 10 mm or more rain	42	42	1968	28
25 mm (0.98 in): Days with 25 mm or more rain	42	14	1986	9
50 mm (1.97 in): Days with 50 mm or more rain	31	4	2012	4
100 mm (3.94 in): Days with 100 mm or more rain	2	1	1971	1
10 cm (3.9 in): Days with 10 cm or more snowfall	15	10	1996	2
25 cm (9.8 in): Days with 25 cm or more snowfall	4	2	1996	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1965.

Download the Data

Data for Foxboro 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).

Foxboro Threshold Days by Year (USC00472889)

Key Facts for Foxboro Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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