Errol Threshold Days by Year (USC00272842)

13 fixed thresholds counted per year at Errol (USC00272842): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Errol Thresholds

Errol: days with 10 mm (0.39 in) or more of precipitation in 83 years, most in 1954 with 55.
Errol: days with 25 mm (0.98 in) or more of precipitation in 82 years, most in 2007 with 13.
Errol: days with 50 mm (1.97 in) or more of precipitation in 33 years, most in 1938 with 3.
Errol: days with 10 cm (3.9 in) or more of snowfall in 10 years, most in 1993 with 12.
13 fixed thresholds have at least one qualifying day at Errol.

Days with 10 mm (0.39 in) or more of precipitation

83 years with a qualifying day

Days per year at Errol with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 55 in 1954.

Days with 10 mm (0.39 in) or more of precipitation per year at Errol
Year	Days	Decade average
1927	32	36.5
1928	41	36.5
1930	32	34.3
1931	36	34.3
1933	36	34.3
1935	32	34.3
1936	38	34.3
1937	33	34.3
1938	33	34.3
1939	34	34.3
1940	37	31.9
1941	22	31.9
1942	32	31.9
1943	38	31.9
1944	33	31.9
1945	36	31.9
1946	36	31.9
1947	33	31.9
1948	29	31.9
1949	23	31.9
1950	33	36
1951	34	36
1952	24	36
1953	37	36
1954	55	36
1955	32	36
1956	33	36
1957	35	36
1958	41	36
1959	36	36
1960	29	28.7
1961	28	28.7
1962	30	28.7
1963	31	28.7
1964	23	28.7
1965	28	28.7
1966	23	28.7
1967	26	28.7
1968	34	28.7
1969	35	28.7
1970	36	33.1
1971	26	33.1
1972	37	33.1
1973	35	33.1
1974	34	33.1
1975	27	33.1
1976	42	33.1
1977	34	33.1
1978	27	33.1
1979	33	33.1
1980	31	32.8
1981	32	32.8
1982	23	32.8
1983	39	32.8
1984	36	32.8
1985	33	32.8
1986	34	32.8
1987	33	32.8
1988	30	32.8
1989	37	32.8
1990	41	33.4
1991	35	33.4
1992	27	33.4
1993	31	33.4
1994	31	33.4
1995	32	33.4
1996	42	33.4
1997	23	33.4
1998	38	33.4
1999	34	33.4
2000	39	36.8
2001	21	36.8
2002	36	36.8
2003	35	36.8
2004	35	36.8
2005	41	36.8
2006	37	36.8
2007	38	36.8
2008	46	36.8
2009	40	36.8
2010	37	37.7
2011	41	37.7
2012	35	37.7

For each year, a bar from the first to the last day at Errol meeting 10 mm (0.39 in).

First to last qualifying date each year at Errol
Year	First date	Last date
1927	1927-01-05	1927-12-17
1928	1928-01-13	1928-12-17
1930	1930-01-10	1930-11-25
1931	1931-01-06	1931-12-25
1933	1933-01-19	1933-12-26
1935	1935-01-01	1935-12-09
1936	1936-01-03	1936-11-05
1937	1937-01-03	1937-12-18
1938	1938-01-07	1938-12-10
1939	1939-01-02	1939-12-20
1940	1940-01-15	1940-12-30
1941	1941-01-04	1941-12-14
1942	1942-01-02	1942-12-30
1943	1943-02-11	1943-11-23
1944	1944-01-07	1944-12-28
1945	1945-01-01	1945-12-07
1946	1946-01-25	1946-12-28
1947	1947-01-02	1947-11-24
1948	1948-01-09	1948-12-31
1949	1949-01-06	1949-12-27
1950	1950-01-07	1950-12-29
1951	1951-01-15	1951-12-21
1952	1952-01-18	1952-12-24
1953	1953-01-03	1953-12-14
1954	1954-01-06	1954-12-30
1955	1955-01-02	1955-11-17
1956	1956-01-08	1956-12-29
1957	1957-01-23	1957-12-21
1958	1958-01-01	1958-11-29
1959	1959-01-02	1959-12-29
1960	1960-01-03	1960-12-21
1961	1961-01-01	1961-12-28
1962	1962-02-24	1962-12-22
1963	1963-01-13	1963-12-09
1964	1964-01-21	1964-12-28
1965	1965-02-08	1965-11-27
1966	1966-01-24	1966-12-29
1967	1967-01-28	1967-12-29
1968	1968-01-15	1968-12-28
1969	1969-01-07	1969-12-27
1970	1970-01-29	1970-12-24
1971	1971-02-08	1971-12-15
1972	1972-01-02	1972-12-31
1973	1973-01-20	1973-12-27
1974	1974-01-22	1974-12-17
1975	1975-01-25	1975-12-26
1976	1976-01-03	1976-12-07
1977	1977-01-10	1977-12-25
1978	1978-01-09	1978-12-25
1979	1979-01-02	1979-12-25
1980	1980-01-12	1980-12-03
1981	1981-02-02	1981-12-23
1982	1982-01-01	1982-12-16
1983	1983-01-11	1983-11-29
1984	1984-02-05	1984-12-28
1985	1985-01-01	1985-12-13
1986	1986-01-03	1986-12-18
1987	1987-01-02	1987-12-20
1988	1988-01-18	1988-12-27
1989	1989-01-20	1989-12-03
1990	1990-01-01	1990-12-24
1991	1991-01-12	1991-12-15
1992	1992-01-15	1992-12-30
1993	1993-01-01	1993-12-22
1994	1994-01-05	1994-11-29
1995	1995-01-07	1995-12-16
1996	1996-01-13	1996-12-25
1997	1997-01-17	1997-12-26
1998	1998-01-06	1998-12-22
1999	1999-01-03	1999-12-20
2000	2000-01-03	2000-12-17
2001	2001-01-30	2001-12-14
2002	2002-01-06	2002-12-31
2003	2003-02-01	2003-12-17
2004	2004-02-06	2004-12-31
2005	2005-02-10	2005-12-30
2006	2006-01-19	2006-12-23
2007	2007-01-06	2007-12-17
2008	2008-01-12	2008-12-22
2009	2009-01-08	2009-12-14
2010	2010-01-26	2010-12-27
2011	2011-01-13	2011-12-28
2012	2012-01-27	2012-12-28

Every Fixed Threshold

Fixed thresholds at Errol
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	2	17	2012	17
90 F (32.2 C): Days	2	4	2012	4
0 C (32 F): Ice days (max	2	54	2011	53
0 C (32 F): Frost days (min	2	194	2012	194
-10 C (14 F): Days with min	2	77	2012	77
-20 C (-4 F): Days with min	2	24	2011	18
-30 C (-22 F): Days with min	1	2	2011	2
10 mm (0.39 in): Days with 10 mm or more rain	83	55	1954	35
25 mm (0.98 in): Days with 25 mm or more rain	82	13	2007	5
50 mm (1.97 in): Days with 50 mm or more rain	33	3	1938	3
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1940	1
10 cm (3.9 in): Days with 10 cm or more snowfall	10	12	1993	2
25 cm (9.8 in): Days with 25 cm or more snowfall	4	3	1993	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2011.

Download the Data

Data for Errol 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).

Errol Threshold Days by Year (USC00272842)

Key Facts for Errol Thresholds

Days with 10 mm (0.39 in) or more of precipitation

Every Fixed Threshold

Download the Data

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