Houlton Threshold Days by Year (USC00173897)

17 fixed thresholds counted per year at Houlton (USC00173897): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Houlton Thresholds

Houlton: days with a maximum temperature at or below 0 C (32 F) in 71 years, most in 1926 with 104.
Houlton: nights with a minimum temperature at or below 0 C (32 F) in 71 years, most in 1939 with 216.
Houlton: nights with a minimum temperature at or below -10 C (14 F) in 71 years, most in 1893 with 109.
Houlton: nights with a minimum temperature at or below -20 C (-4 F) in 71 years, most in 1917 with 61.
17 fixed thresholds have at least one qualifying day at Houlton.

Days at or above 30 C (86 F)

69 years with a qualifying day

Days per year at Houlton with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 36 in 1911.

Days at or above 30 C (86 F) per year at Houlton
Year	Days	Decade average
1893	11	15.3
1894	14	15.3
1895	21	15.3
1903	7	11
1904	11	11
1905	6	11
1908	18	11
1909	13	11
1910	10	13.9
1911	36	13.9
1912	10	13.9
1913	16	13.9
1917	5	13.9
1918	10	13.9
1919	10	13.9
1925	4	6.2
1926	4	6.2
1927	5	6.2
1928	8	6.2
1929	10	6.2
1930	11	10
1931	10	10
1933	5	10
1934	7	10
1935	13	10
1937	16	10
1938	5	10
1939	13	10
1940	13	16.8
1941	14	16.8
1942	12	16.8
1943	13	16.8
1944	21	16.8
1945	20	16.8
1946	15	16.8
1947	23	16.8
1948	13	16.8
1949	24	16.8
1950	6	8.8
1951	6	8.8
1952	23	8.8
1953	6	8.8
1954	3	8.8
1955	12	8.8
1956	2	8.8
1957	5	8.8
1959	16	8.8
1960	6	4.5
1961	5	4.5
1962	3	4.5
1963	11	4.5
1965	1	4.5
1966	2	4.5
1967	3	4.5
1969	5	4.5
1970	11	10.1
1971	3	10.1
1972	5	10.1
1973	7	10.1
1974	5	10.1
1975	15	10.1
1976	16	10.1
1977	15	10.1
1978	11	10.1
1979	13	10.1
1980	8	9.3
1981	6	9.3
1982	10	9.3
1983	13	9.3

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

First to last qualifying date each year at Houlton
Year	First date	Last date
1893	1893-05-11	1893-08-12
1894	1894-06-15	1894-08-06
1895	1895-05-07	1895-09-23
1903	1903-05-17	1903-09-05
1904	1904-06-24	1904-07-20
1905	1905-06-19	1905-08-10
1908	1908-06-08	1908-09-11
1909	1909-06-22	1909-08-09
1910	1910-06-26	1910-08-25
1911	1911-05-21	1911-08-10
1912	1912-06-24	1912-07-12
1913	1913-07-01	1913-08-22
1917	1917-07-26	1917-08-02
1918	1918-05-18	1918-08-15
1919	1919-06-03	1919-07-22
1925	1925-08-04	1925-08-25
1926	1926-07-17	1926-07-27
1927	1927-06-23	1927-07-26
1928	1928-07-03	1928-08-17
1929	1929-05-28	1929-07-29
1930	1930-06-03	1930-07-19
1931	1931-05-20	1931-08-06
1933	1933-06-27	1933-08-23
1934	1934-06-06	1934-07-21
1935	1935-07-04	1935-08-21
1937	1937-05-31	1937-09-03
1938	1938-06-22	1938-08-16
1939	1939-06-20	1939-09-16
1940	1940-05-27	1940-08-19
1941	1941-05-22	1941-09-22
1942	1942-06-10	1942-09-18
1943	1943-05-24	1943-08-02
1944	1944-05-31	1944-08-16
1945	1945-06-14	1945-09-08
1946	1946-06-24	1946-08-09
1947	1947-06-22	1947-09-15
1948	1948-06-30	1948-09-13
1949	1949-06-03	1949-08-28
1950	1950-05-24	1950-08-09
1951	1951-06-19	1951-09-13
1952	1952-07-03	1952-08-29
1953	1953-05-10	1953-08-30
1954	1954-06-22	1954-08-25
1955	1955-05-22	1955-08-22
1956	1956-06-14	1956-06-15
1957	1957-06-15	1957-07-19
1959	1959-05-27	1959-09-08
1960	1960-05-28	1960-08-29
1961	1961-05-14	1961-09-11
1962	1962-06-16	1962-06-30
1963	1963-06-03	1963-07-29
1965	1965-09-22	1965-09-22
1966	1966-05-24	1966-06-27
1967	1967-06-03	1967-06-05
1969	1969-06-13	1969-07-17
1970	1970-06-10	1970-08-17
1971	1971-06-19	1971-08-11
1972	1972-05-28	1972-07-16
1973	1973-07-08	1973-08-31
1974	1974-05-15	1974-08-22
1975	1975-06-23	1975-08-11
1976	1976-06-05	1976-08-22
1977	1977-05-22	1977-08-30
1978	1978-05-28	1978-08-19
1979	1979-05-09	1979-08-05
1980	1980-06-14	1980-09-02
1981	1981-07-02	1981-08-01
1982	1982-07-07	1982-08-16
1983	1983-06-21	1983-09-21

Every Fixed Threshold

Fixed thresholds at Houlton
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	69	36	1911	13
35 C (95 F): Days	12	9	1944	1
90 F (32.2 C): Days	51	16	1944	5
100 F (37.8 C): Days	3	1	1908	1
0 C (32 F): Ice days (max	71	104	1926	64
0 C (32 F): Frost days (min	71	216	1939	167
-10 C (14 F): Days with min	71	109	1893	61
-20 C (-4 F): Days with min	71	61	1917	13
-30 C (-22 F): Days with min	54	13	1934	5
20 C (68 F): Tropical nights (min	43	8	1975	1
25 C (77 F): Days with min	1	1	1911	1
10 mm (0.39 in): Days with 10 mm or more rain	56	50	1954	30
25 mm (0.98 in): Days with 25 mm or more rain	55	13	1976	6
50 mm (1.97 in): Days with 50 mm or more rain	34	2	1894	1
10 cm (3.9 in): Days with 10 cm or more snowfall	48	16	1972	9
25 cm (9.8 in): Days with 25 cm or more snowfall	32	3	1955	2
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	1974	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1893.

Download the Data

Data for Houlton 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).

Houlton Threshold Days by Year (USC00173897)

Key Facts for Houlton Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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