Worcester Threshold Days by Year (USW00094746)

16 fixed thresholds counted per year at Worcester (USW00094746): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Worcester Thresholds

Worcester: days with a maximum temperature at or above 30 C (86 F) in 78 years, most in 1988 with 35.
Worcester: days with a maximum temperature at or below 0 C (32 F) in 78 years, most in 1970 with 72.
Worcester: nights with a minimum temperature at or below 0 C (32 F) in 78 years, most in 1972 with 163.
Worcester: nights with a minimum temperature at or below -10 C (14 F) in 78 years, most in 1970 with 62.
16 fixed thresholds have at least one qualifying day at Worcester.

Days at or above 30 C (86 F)

78 years with a qualifying day

Days per year at Worcester with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 35 in 1988.

Days at or above 30 C (86 F) per year at Worcester
Year	Days	Decade average
1949	34	34
1950	12	14.5
1951	10	14.5
1952	23	14.5
1953	22	14.5
1954	6	14.5
1955	26	14.5
1956	13	14.5
1957	14	14.5
1958	1	14.5
1959	18	14.5
1960	3	9.5
1961	10	9.5
1962	4	9.5
1963	15	9.5
1964	12	9.5
1965	12	9.5
1966	10	9.5
1967	6	9.5
1968	13	9.5
1969	10	9.5
1970	16	10.5
1971	11	10.5
1972	11	10.5
1973	17	10.5
1974	6	10.5
1975	11	10.5
1976	7	10.5
1977	10	10.5
1978	7	10.5
1979	9	10.5
1980	14	14.9
1981	8	14.9
1982	9	14.9
1983	34	14.9
1984	13	14.9
1985	4	14.9
1986	5	14.9
1987	15	14.9
1988	35	14.9
1989	12	14.9
1990	8	9.5
1991	16	9.5
1992	4	9.5
1993	12	9.5
1994	11	9.5
1995	12	9.5
1996	2	9.5
1997	8	9.5
1998	1	9.5
1999	21	9.5
2000	5	12.9
2001	13	12.9
2002	23	12.9
2003	8	12.9
2004	4	12.9
2005	25	12.9
2006	11	12.9
2007	22	12.9
2008	9	12.9
2009	9	12.9
2010	24	13.6
2011	11	13.6
2012	16	13.6
2013	18	13.6
2014	4	13.6
2015	12	13.6
2016	17	13.6
2017	9	13.6
2018	17	13.6
2019	8	13.6
2020	26	18.4
2021	19	18.4
2022	19	18.4
2023	12	18.4
2024	21	18.4
2025	20	18.4
2026	12	18.4

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

First to last qualifying date each year at Worcester
Year	First date	Last date
1949	1949-05-05	1949-08-28
1950	1950-06-07	1950-07-31
1951	1951-05-16	1951-08-31
1952	1952-06-17	1952-09-11
1953	1953-06-06	1953-09-05
1954	1954-06-20	1954-08-25
1955	1955-06-30	1955-08-22
1956	1956-05-31	1956-08-18
1957	1957-06-14	1957-09-13
1958	1958-07-01	1958-07-01
1959	1959-05-12	1959-08-28
1960	1960-07-12	1960-08-29
1961	1961-05-14	1961-09-12
1962	1962-04-27	1962-07-08
1963	1963-06-25	1963-07-29
1964	1964-05-09	1964-08-30
1965	1965-05-10	1965-09-22
1966	1966-06-27	1966-09-02
1967	1967-06-10	1967-07-10
1968	1968-06-06	1968-08-25
1969	1969-05-29	1969-09-01
1970	1970-05-10	1970-09-23
1971	1971-06-07	1971-09-05
1972	1972-07-02	1972-08-26
1973	1973-06-11	1973-09-04
1974	1974-06-09	1974-08-14
1975	1975-05-20	1975-08-05
1976	1976-04-17	1976-08-22
1977	1977-05-17	1977-08-29
1978	1978-06-19	1978-08-17
1979	1979-05-09	1979-08-05
1980	1980-06-24	1980-09-02
1981	1981-05-25	1981-07-21
1982	1982-07-07	1982-07-19
1983	1983-06-13	1983-09-20
1984	1984-06-07	1984-08-07
1985	1985-05-11	1985-08-15
1986	1986-05-18	1986-07-24
1987	1987-05-29	1987-08-18
1988	1988-06-12	1988-08-15
1989	1989-05-20	1989-09-10
1990	1990-04-27	1990-08-18
1991	1991-06-20	1991-09-16
1992	1992-05-21	1992-08-26
1993	1993-05-11	1993-09-03
1994	1994-06-17	1994-07-22
1995	1995-06-19	1995-08-21
1996	1996-05-20	1996-05-21
1997	1997-06-10	1997-08-16
1998	1998-08-24	1998-08-24
1999	1999-05-31	1999-09-04
2000	2000-05-07	2000-06-17
2001	2001-05-02	2001-08-10
2002	2002-04-17	2002-09-09
2003	2003-06-24	2003-08-22
2004	2004-04-19	2004-08-28
2005	2005-06-05	2005-09-14
2006	2006-06-18	2006-08-03
2007	2007-05-25	2007-09-26
2008	2008-06-07	2008-07-20
2009	2009-04-25	2009-08-21
2010	2010-04-07	2010-09-02
2011	2011-05-27	2011-07-23
2012	2012-04-16	2012-08-05
2013	2013-05-31	2013-09-11
2014	2014-07-02	2014-09-06
2015	2015-06-23	2015-09-09
2016	2016-05-26	2016-09-09
2017	2017-05-17	2017-09-24
2018	2018-05-03	2018-09-06
2019	2019-07-04	2019-08-19
2020	2020-06-20	2020-08-24
2021	2021-05-22	2021-08-27
2022	2022-05-21	2022-08-25
2023	2023-04-13	2023-09-07
2024	2024-05-21	2024-08-05
2025	2025-06-05	2025-08-17
2026	2026-05-18	2026-08-08

Every Fixed Threshold

Fixed thresholds at Worcester
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	78	35	1988	12
35 C (95 F): Days	9	3	1949	1
90 F (32.2 C): Days	65	18	1949	4
0 C (32 F): Ice days (max	78	72	1970	39
0 C (32 F): Frost days (min	78	163	1972	86
-10 C (14 F): Days with min	78	62	1970	27
-20 C (-4 F): Days with min	49	8	1968	1
20 C (68 F): Tropical nights (min	75	24	2005	10
25 C (77 F): Days with min	1	1	2010	1
10 mm (0.39 in): Days with 10 mm or more rain	78	58	1983	25
25 mm (0.98 in): Days with 25 mm or more rain	78	24	1972	10
50 mm (1.97 in): Days with 50 mm or more rain	69	6	1972	3
100 mm (3.94 in): Days with 100 mm or more rain	9	2	1954	1
10 cm (3.9 in): Days with 10 cm or more snowfall	77	13	1996	5
25 cm (9.8 in): Days with 25 cm or more snowfall	50	6	1996	2
50 cm (19.7 in): Days with 50 cm or more snowfall	4	1	1997	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1949.

Download the Data

Data for Worcester 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).

Worcester Threshold Days by Year (USW00094746)

Key Facts for Worcester Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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