Worcester Threshold Days by Year (USC00199928)

18 fixed thresholds counted per year at Worcester (USC00199928): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Worcester Thresholds

Worcester: days with 10 mm (0.39 in) or more of precipitation in 63 years, most in 1958 with 45.
Worcester: days with 25 mm (0.98 in) or more of precipitation in 63 years, most in 1951 with 19.
Worcester: nights with a minimum temperature at or below 0 C (32 F) in 62 years, most in 1926 with 171.
Worcester: nights with a minimum temperature at or below -10 C (14 F) in 62 years, most in 1934 with 59.
18 fixed thresholds have at least one qualifying day at Worcester.

Days at or above 30 C (86 F)

61 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 39 in 1955.

Days at or above 30 C (86 F) per year at Worcester
Year	Days	Decade average
1895	8	12.3
1896	15	12.3
1897	6	12.3
1899	20	12.3
1901	29	20.5
1903	14	20.5
1904	14	20.5
1905	22	20.5
1906	24	20.5
1907	22	20.5
1908	24	20.5
1909	15	20.5
1910	16	14
1911	15	14
1912	17	14
1913	15	14
1914	15	14
1915	11	14
1916	15	14
1917	12	14
1918	14	14
1919	10	14
1920	16	15.8
1921	19	15.8
1922	13	15.8
1923	13	15.8
1926	10	15.8
1927	9	15.8
1928	15	15.8
1929	31	15.8
1930	30	22.1
1931	21	22.1
1932	11	22.1
1933	19	22.1
1934	17	22.1
1935	19	22.1
1936	23	22.1
1937	31	22.1
1938	24	22.1
1939	26	22.1
1940	15	24.7
1941	29	24.7
1942	18	24.7
1943	24	24.7
1944	37	24.7
1945	20	24.7
1946	17	24.7
1947	24	24.7
1949	38	24.7
1950	9	19.7
1951	8	19.7
1952	26	19.7
1953	28	19.7
1954	11	19.7
1955	39	19.7
1956	15	19.7
1957	24	19.7
1958	10	19.7
1959	27	19.7
1960	7	11.5
1961	16	11.5

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
1895	1895-05-10	1895-09-23
1896	1896-05-10	1896-08-13
1897	1897-07-05	1897-09-11
1899	1899-05-01	1899-07-27
1901	1901-06-06	1901-09-07
1903	1903-05-18	1903-09-15
1904	1904-05-25	1904-08-01
1905	1905-06-15	1905-08-24
1906	1906-05-16	1906-09-19
1907	1907-05-14	1907-09-16
1908	1908-05-26	1908-09-11
1909	1909-06-22	1909-08-25
1910	1910-06-20	1910-07-27
1911	1911-05-22	1911-08-15
1912	1912-06-17	1912-08-14
1913	1913-06-16	1913-08-18
1914	1914-05-26	1914-09-23
1915	1915-06-14	1915-09-17
1916	1916-07-07	1916-09-14
1917	1917-07-02	1917-08-29
1918	1918-06-01	1918-08-23
1919	1919-06-03	1919-07-28
1920	1920-06-01	1920-08-17
1921	1921-05-21	1921-09-03
1922	1922-06-07	1922-08-18
1923	1923-06-05	1923-08-11
1926	1926-07-03	1926-08-29
1927	1927-04-20	1927-10-01
1928	1928-06-14	1928-08-30
1929	1929-05-28	1929-09-07
1930	1930-05-02	1930-10-13
1931	1931-05-28	1931-09-22
1932	1932-05-16	1932-09-02
1933	1933-05-26	1933-08-27
1934	1934-05-22	1934-07-31
1935	1935-06-29	1935-08-21
1936	1936-05-08	1936-09-09
1937	1937-05-31	1937-09-04
1938	1938-04-28	1938-10-12
1939	1939-05-28	1939-10-10
1940	1940-06-05	1940-08-10
1941	1941-04-20	1941-09-23
1942	1942-05-03	1942-09-17
1943	1943-06-03	1943-09-07
1944	1944-05-04	1944-09-02
1945	1945-04-13	1945-09-08
1946	1946-05-25	1946-10-07
1947	1947-05-24	1947-10-16
1949	1949-05-05	1949-08-28
1950	1950-06-07	1950-07-31
1951	1951-05-16	1951-08-31
1952	1952-06-16	1952-09-02
1953	1953-05-11	1953-09-05
1954	1954-06-20	1954-10-13
1955	1955-05-25	1955-09-18
1956	1956-05-31	1956-09-05
1957	1957-06-11	1957-09-16
1958	1958-06-30	1958-08-31
1959	1959-05-12	1959-09-24
1960	1960-06-28	1960-09-08
1961	1961-05-14	1961-09-12

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	61	39	1955	16
35 C (95 F): Days	19	8	1944	2
90 F (32.2 C): Days	56	18	1949	8
100 F (37.8 C): Days	2	1	1911	1
0 C (32 F): Ice days (max	61	73	1904	38
0 C (32 F): Frost days (min	62	171	1926	151
-10 C (14 F): Days with min	62	59	1934	34
-20 C (-4 F): Days with min	47	10	1934	8
-30 C (-22 F): Days with min	1	1	1943	1
20 C (68 F): Tropical nights (min	62	25	1916	6
25 C (77 F): Days with min	2	4	1911	1
10 mm (0.39 in): Days with 10 mm or more rain	63	45	1958	40
25 mm (0.98 in): Days with 25 mm or more rain	63	19	1951	14
50 mm (1.97 in): Days with 50 mm or more rain	43	6	1938	1
100 mm (3.94 in): Days with 100 mm or more rain	8	2	1954	1
10 cm (3.9 in): Days with 10 cm or more snowfall	36	11	1945	7
25 cm (9.8 in): Days with 25 cm or more snowfall	14	3	1958	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	1960	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1895.

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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Worcester Threshold Days by Year (USC00199928)

Key Facts for Worcester Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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