Rumford Threshold Days by Year (USC00177330)

17 fixed thresholds counted per year at Rumford (USC00177330): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Rumford Thresholds

Rumford: days with a maximum temperature at or above 30 C (86 F) in 60 years, most in 1949 with 35.
Rumford: days with a maximum temperature at or below 0 C (32 F) in 60 years, most in 1904 with 95.
Rumford: nights with a minimum temperature at or below 0 C (32 F) in 60 years, most in 1935 with 198.
Rumford: nights with a minimum temperature at or below -10 C (14 F) in 60 years, most in 1904 with 99.
17 fixed thresholds have at least one qualifying day at Rumford.

Days at or above 30 C (86 F)

60 years with a qualifying day

Days per year at Rumford with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 35 in 1949.

Days at or above 30 C (86 F) per year at Rumford
Year	Days	Decade average
1899	16	16
1900	18	13.7
1901	19	13.7
1902	5	13.7
1903	8	13.7
1904	7	13.7
1905	16	13.7
1906	15	13.7
1907	11	13.7
1908	24	13.7
1909	14	13.7
1910	8	11.2
1911	18	11.2
1912	11	11.2
1913	11	11.2
1914	11	11.2
1915	2	11.2
1916	14	11.2
1917	8	11.2
1918	12	11.2
1919	17	11.2
1920	6	9.7
1921	23	9.7
1922	7	9.7
1923	9	9.7
1924	8	9.7
1925	9	9.7
1926	4	9.7
1927	5	9.7
1928	10	9.7
1929	16	9.7
1930	9	15.2
1931	18	15.2
1932	9	15.2
1933	7	15.2
1934	12	15.2
1935	18	15.2
1936	11	15.2
1937	32	15.2
1938	22	15.2
1939	14	15.2
1940	14	22.9
1941	25	22.9
1942	18	22.9
1943	15	22.9
1944	23	22.9
1945	20	22.9
1946	22	22.9
1947	29	22.9
1948	28	22.9
1949	35	22.9
1950	9	17.8
1951	17	17.8
1952	28	17.8
1953	26	17.8
1954	5	17.8
1955	34	17.8
1956	8	17.8
1957	20	17.8
1958	13	17.8

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

First to last qualifying date each year at Rumford
Year	First date	Last date
1899	1899-06-01	1899-08-31
1900	1900-06-27	1900-09-06
1901	1901-05-22	1901-09-07
1902	1902-07-08	1902-09-01
1903	1903-05-17	1903-09-15
1904	1904-06-20	1904-08-01
1905	1905-06-16	1905-08-22
1906	1906-07-13	1906-09-12
1907	1907-06-18	1907-08-12
1908	1908-06-07	1908-09-27
1909	1909-06-17	1909-08-25
1910	1910-06-21	1910-07-27
1911	1911-05-21	1911-08-10
1912	1912-06-24	1912-07-15
1913	1913-05-03	1913-09-03
1914	1914-05-26	1914-09-23
1915	1915-09-15	1915-09-16
1916	1916-07-07	1916-08-23
1917	1917-07-22	1917-08-02
1918	1918-05-18	1918-08-24
1919	1919-06-02	1919-07-28
1920	1920-06-01	1920-08-28
1921	1921-05-21	1921-09-03
1922	1922-06-07	1922-08-16
1923	1923-06-04	1923-07-20
1924	1924-07-07	1924-08-09
1925	1925-06-04	1925-09-12
1926	1926-07-18	1926-08-11
1927	1927-06-23	1927-07-16
1928	1928-07-03	1928-08-17
1929	1929-05-28	1929-09-03
1930	1930-06-04	1930-07-19
1931	1931-05-20	1931-09-14
1932	1932-05-16	1932-09-02
1933	1933-06-11	1933-07-24
1934	1934-06-05	1934-08-19
1935	1935-07-04	1935-08-21
1936	1936-05-08	1936-08-16
1937	1937-05-30	1937-09-04
1938	1938-06-07	1938-08-21
1939	1939-05-28	1939-09-16
1940	1940-06-05	1940-08-18
1941	1941-04-20	1941-09-22
1942	1942-05-03	1942-09-02
1943	1943-06-22	1943-08-02
1944	1944-05-05	1944-08-17
1945	1945-06-14	1945-09-08
1946	1946-05-25	1946-10-07
1947	1947-06-22	1947-10-18
1948	1948-06-04	1948-09-30
1949	1949-05-05	1949-08-27
1950	1950-06-08	1950-08-18
1951	1951-05-15	1951-08-30
1952	1952-06-09	1952-08-29
1953	1953-05-10	1953-09-05
1954	1954-06-18	1954-08-25
1955	1955-05-22	1955-09-19
1956	1956-06-12	1956-08-18
1957	1957-05-09	1957-09-22
1958	1958-07-01	1958-08-31

Every Fixed Threshold

Fixed thresholds at Rumford
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	60	35	1949	13
35 C (95 F): Days	23	7	1911	3
90 F (32.2 C): Days	59	19	1955	4
100 F (37.8 C): Days	1	4	1911	4
0 C (32 F): Ice days (max	60	95	1904	58
0 C (32 F): Frost days (min	60	198	1935	170
-10 C (14 F): Days with min	60	99	1904	65
-20 C (-4 F): Days with min	60	29	1934	6
-30 C (-22 F): Days with min	11	5	1934	2
20 C (68 F): Tropical nights (min	41	13	1916	5
10 mm (0.39 in): Days with 10 mm or more rain	60	47	1954	38
25 mm (0.98 in): Days with 25 mm or more rain	60	18	1937	5
50 mm (1.97 in): Days with 50 mm or more rain	37	5	1937	4
100 mm (3.94 in): Days with 100 mm or more rain	5	1	1924	1
10 cm (3.9 in): Days with 10 cm or more snowfall	31	12	1929	12
25 cm (9.8 in): Days with 25 cm or more snowfall	21	3	1931	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	1939	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1899.

Download the Data

Data for Rumford 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).

Rumford Threshold Days by Year (USC00177330)

Key Facts for Rumford Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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