Northwood Threshold Days by Year

18 fixed thresholds counted per year at Northwood (USC00136103): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Northwood Thresholds

Northwood: days with 10 mm (0.39 in) or more of precipitation in 112 years, most in 1982 with 42.
Northwood: days with 25 mm (0.98 in) or more of precipitation in 112 years, most in 2018 with 15.
Northwood: days with a maximum temperature at or above 30 C (86 F) in 107 years, most in 1931 with 67.
Northwood: days with a maximum temperature at or below 0 C (32 F) in 107 years, most in 1978 with 99.
18 fixed thresholds have at least one qualifying day at Northwood.

Days at or above 30 C (86 F)

107 years with a qualifying day

Days per year at Northwood with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 67 in 1931.

Days at or above 30 C (86 F) per year at Northwood
Year	Days	Decade average
1897	43	38
1898	37	38
1899	34	38
1900	31	20.9
1901	48	20.9
1902	3	20.9
1903	3	20.9
1905	26	20.9
1906	19	20.9
1907	16	20.9
1910	41	29.3
1912	24	29.3
1913	35	29.3
1914	33	29.3
1915	5	29.3
1916	38	29.3
1920	23	36.6
1921	58	36.6
1922	37	36.6
1923	40	36.6
1929	25	36.6
1930	46	45.7
1931	67	45.7
1932	28	45.7
1933	51	45.7
1934	52	45.7
1935	37	45.7
1936	57	45.7
1937	43	45.7
1938	30	45.7
1939	46	45.7
1940	28	26.4
1941	32	26.4
1942	16	26.4
1943	29	26.4
1944	18	26.4
1945	15	26.4
1946	11	26.4
1947	38	26.4
1948	27	26.4
1949	50	26.4
1950	12	35.3
1952	39	35.3
1955	58	35.3
1957	30	35.3
1958	28	35.3
1959	45	35.3
1960	31	31
1961	25	31
1962	30	31
1963	35	31
1964	50	31
1965	22	31
1966	40	31
1967	16	31
1968	28	31
1969	33	31
1970	50	41.7
1971	36	41.7
1972	34	41.7
1973	32	41.7
1974	32	41.7
1975	55	41.7
1976	53	41.7
1977	49	41.7
1978	42	41.7
1979	34	41.7
1980	53	42.8
1981	30	42.8
1982	27	42.8
1983	60	42.8
1984	40	42.8
1985	38	42.8
1986	33	42.8
1987	55	42.8
1988	67	42.8
1989	25	42.8
1990	20	14.9
1991	31	14.9
1992	10	14.9
1993	5	14.9
1994	9	14.9
1995	27	14.9
1996	13	14.9
1997	7	14.9
1998	13	14.9
1999	14	14.9
2000	8	14.4
2001	21	14.4
2002	30	14.4
2003	19	14.4
2004	3	14.4
2005	22	14.4
2006	18	14.4
2007	14	14.4
2008	3	14.4
2009	6	14.4
2010	19	16.2
2012	41	16.2
2014	1	16.2
2017	14	16.2
2018	16	16.2
2019	6	16.2
2020	13	12.5
2021	22	12.5
2024	6	12.5
2026	9	12.5

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

First to last qualifying date each year at Northwood
Year	First date	Last date
1897	1897-06-12	1897-10-14
1898	1898-06-03	1898-09-29
1899	1899-06-12	1899-09-06
1900	1900-05-11	1900-09-10
1901	1901-05-01	1901-09-06
1902	1902-07-16	1902-07-30
1903	1903-07-07	1903-07-25
1905	1905-06-04	1905-08-28
1906	1906-06-06	1906-09-10
1907	1907-06-16	1907-08-31
1910	1910-04-28	1910-09-17
1912	1912-05-22	1912-09-09
1913	1913-05-28	1913-09-07
1914	1914-05-25	1914-08-22
1915	1915-06-05	1915-07-15
1916	1916-06-30	1916-09-06
1920	1920-05-22	1920-08-18
1921	1921-05-20	1921-09-01
1922	1922-05-10	1922-09-07
1923	1923-06-01	1923-08-18
1929	1929-05-28	1929-09-03
1930	1930-04-10	1930-10-10
1931	1931-04-08	1931-09-20
1932	1932-05-13	1932-08-30
1933	1933-06-05	1933-09-18
1934	1934-05-06	1934-08-18
1935	1935-07-03	1935-09-24
1936	1936-05-16	1936-09-22
1937	1937-06-23	1937-09-22
1938	1938-06-21	1938-09-23
1939	1939-04-24	1939-09-15
1940	1940-05-12	1940-09-20
1941	1941-05-26	1941-09-04
1942	1942-05-29	1942-09-11
1943	1943-05-28	1943-08-31
1944	1944-05-14	1944-09-17
1945	1945-06-23	1945-09-07
1946	1946-06-07	1946-08-16
1947	1947-06-27	1947-10-21
1948	1948-05-20	1948-09-19
1949	1949-05-03	1949-08-26
1950	1950-06-13	1950-08-23
1952	1952-04-29	1952-09-12
1955	1955-05-02	1955-09-18
1957	1957-06-06	1957-09-01
1958	1958-06-04	1958-10-15
1959	1959-05-01	1959-09-08
1960	1960-04-22	1960-09-07
1961	1961-05-12	1961-09-10
1962	1962-05-04	1962-09-12
1963	1963-05-08	1963-10-06
1964	1964-04-16	1964-09-09
1965	1965-05-02	1965-08-25
1966	1966-05-26	1966-09-01
1967	1967-05-18	1967-08-16
1968	1968-04-30	1968-08-24
1969	1969-05-27	1969-09-15
1970	1970-04-27	1970-09-20
1971	1971-06-04	1971-09-08
1972	1972-05-16	1972-09-16
1973	1973-06-08	1973-08-30
1974	1974-06-03	1974-09-26
1975	1975-05-19	1975-10-13
1976	1976-05-20	1976-10-01
1977	1977-04-27	1977-08-27
1978	1978-05-25	1978-09-11
1979	1979-05-17	1979-09-05
1980	1980-04-21	1980-09-12
1981	1981-04-27	1981-09-11
1982	1982-05-04	1982-09-11
1983	1983-06-10	1983-09-10
1984	1984-06-01	1984-09-20
1985	1985-04-17	1985-09-19
1986	1986-05-05	1986-09-26
1987	1987-04-19	1987-09-04
1988	1988-05-14	1988-09-18
1989	1989-06-03	1989-08-23
1990	1990-05-08	1990-09-13
1991	1991-04-07	1991-09-08
1992	1992-05-01	1992-10-03
1993	1993-07-04	1993-08-27
1994	1994-04-19	1994-09-15
1995	1995-06-17	1995-08-31
1996	1996-05-18	1996-08-07
1997	1997-06-23	1997-10-06
1998	1998-05-15	1998-09-27
1999	1999-06-26	1999-09-04
2000	2000-05-06	2000-09-12
2001	2001-05-15	2001-08-09
2002	2002-04-16	2002-10-01
2003	2003-04-15	2003-09-08
2004	2004-04-17	2004-06-08
2005	2005-06-07	2005-10-04
2006	2006-05-28	2006-08-25
2007	2007-04-30	2007-09-22
2008	2008-07-12	2008-08-04
2009	2009-04-25	2009-08-09
2010	2010-05-23	2010-10-10
2012	2012-05-19	2012-09-29
2014	2014-07-07	2014-07-07
2017	2017-06-04	2017-09-25
2018	2018-05-25	2018-09-18
2019	2019-06-30	2019-10-01
2020	2020-06-02	2020-08-28
2021	2021-05-02	2021-08-20
2024	2024-06-17	2024-10-06
2026	2026-05-16	2026-07-27

Every Fixed Threshold

Fixed thresholds at Northwood
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	107	67	1931	9
35 C (95 F): Days	55	21	1931	2
40 C (104 F): Days	3	3	1936	3
90 F (32.2 C): Days	99	46	1988	1
100 F (37.8 C): Days	15	9	1936	1
0 C (32 F): Ice days (max	107	99	1978	41
0 C (32 F): Frost days (min	107	180	2020	100
-10 C (14 F): Days with min	107	91	1937	41
-20 C (-4 F): Days with min	107	43	1929	10
-30 C (-22 F): Days with min	52	9	1936	1
20 C (68 F): Tropical nights (min	105	27	1931	4
25 C (77 F): Days with min	8	2	1988	1
10 mm (0.39 in): Days with 10 mm or more rain	112	42	1982	21
25 mm (0.98 in): Days with 25 mm or more rain	112	15	2018	6
50 mm (1.97 in): Days with 50 mm or more rain	86	7	1990	2
100 mm (3.94 in): Days with 100 mm or more rain	12	3	2004	1
10 cm (3.9 in): Days with 10 cm or more snowfall	76	9	1961	1
25 cm (9.8 in): Days with 25 cm or more snowfall	14	2	1934	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1897.

Download the Data

Data for Northwood 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Northwood Threshold Days by Year

Key Facts for Northwood Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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