Harrington Threshold Days by Year (USC00393574)

18 fixed thresholds counted per year at Harrington (USC00393574): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Harrington Thresholds

Harrington: days with a maximum temperature at or above 30 C (86 F) in 46 years, most in 1970 with 81.
Harrington: days with a maximum temperature at or above 35 C (95 F) in 46 years, most in 1988 with 32.
Harrington: days with a maximum temperature at or above 90 F (32.2 C) in 46 years, most in 1970 with 62.
Harrington: days with a maximum temperature at or below 0 C (32 F) in 46 years, most in 1978 with 84.
18 fixed thresholds have at least one qualifying day at Harrington.

Days at or above 30 C (86 F)

46 years with a qualifying day

Days per year at Harrington with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 81 in 1970.

Days at or above 30 C (86 F) per year at Harrington
Year	Days	Decade average
1961	60	50.7
1962	38	50.7
1963	71	50.7
1964	54	50.7
1965	35	50.7
1966	58	50.7
1967	47	50.7
1968	41	50.7
1969	52	50.7
1970	81	60.6
1971	58	60.6
1972	52	60.6
1973	61	60.6
1974	63	60.6
1975	60	60.6
1976	70	60.6
1977	42	60.6
1978	64	60.6
1979	55	60.6
1980	80	59.5
1981	41	59.5
1982	50	59.5
1983	74	59.5
1984	57	59.5
1985	59	59.5
1986	41	59.5
1987	55	59.5
1988	75	59.5
1989	63	59.5
1990	52	42.7
1991	51	42.7
1992	34	42.7
1993	14	42.7
1994	34	42.7
1995	55	42.7
1996	49	42.7
1997	45	42.7
1998	47	42.7
1999	46	42.7
2000	59	62.6
2001	63	62.6
2002	77	62.6
2003	65	62.6
2004	47	62.6
2005	66	62.6
2006	61	62.6

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

First to last qualifying date each year at Harrington
Year	First date	Last date
1961	1961-04-19	1961-09-19
1962	1962-04-24	1962-10-14
1963	1963-05-06	1963-10-13
1964	1964-04-16	1964-10-15
1965	1965-04-30	1965-10-05
1966	1966-05-04	1966-09-11
1967	1967-05-22	1967-10-03
1968	1968-06-02	1968-09-14
1969	1969-05-14	1969-09-28
1970	1970-05-07	1970-10-05
1971	1971-04-15	1971-09-13
1972	1972-05-16	1972-09-19
1973	1973-05-18	1973-09-01
1974	1974-05-19	1974-09-26
1975	1975-06-03	1975-10-07
1976	1976-05-14	1976-10-02
1977	1977-06-02	1977-09-20
1978	1978-05-23	1978-09-28
1979	1979-05-16	1979-09-30
1980	1980-04-20	1980-10-09
1981	1981-05-02	1981-09-28
1982	1982-05-03	1982-09-10
1983	1983-05-26	1983-09-30
1984	1984-05-16	1984-09-21
1985	1985-04-11	1985-09-18
1986	1986-05-04	1986-08-31
1987	1987-04-17	1987-10-03
1988	1988-04-16	1988-09-17
1989	1989-04-21	1989-09-30
1990	1990-04-22	1990-10-05
1991	1991-04-06	1991-10-16
1992	1992-04-30	1992-10-21
1993	1993-06-21	1993-10-06
1994	1994-05-16	1994-09-28
1995	1995-06-14	1995-10-12
1996	1996-04-10	1996-09-30
1997	1997-05-16	1997-10-04
1998	1998-05-17	1998-09-18
1999	1999-06-04	1999-09-24
2000	2000-05-04	2000-09-18
2001	2001-04-28	2001-09-12
2002	2002-05-29	2002-09-16
2003	2003-04-13	2003-10-19
2004	2004-05-05	2004-09-19
2005	2005-05-19	2005-10-02
2006	2006-05-18	2006-09-14

Every Fixed Threshold

Fixed thresholds at Harrington
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	46	81	1970	61
35 C (95 F): Days	46	32	1988	27
40 C (104 F): Days	19	7	1980	5
90 F (32.2 C): Days	46	62	1970	48
100 F (37.8 C): Days	40	13	2002	11
110 F (43.3 C): Days	2	2	2006	2
0 C (32 F): Ice days (max	46	84	1978	27
0 C (32 F): Frost days (min	46	191	1970	171
-10 C (14 F): Days with min	46	107	1978	35
-20 C (-4 F): Days with min	46	39	1978	5
-30 C (-22 F): Days with min	30	6	1982	1
20 C (68 F): Tropical nights (min	42	17	2002	13
25 C (77 F): Days with min	2	1	1990	1
10 mm (0.39 in): Days with 10 mm or more rain	46	27	1977	13
25 mm (0.98 in): Days with 25 mm or more rain	42	9	1968	3
50 mm (1.97 in): Days with 50 mm or more rain	19	2	1962	1
10 cm (3.9 in): Days with 10 cm or more snowfall	43	9	1977	3
25 cm (9.8 in): Days with 25 cm or more snowfall	9	2	1977	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1961.

Download the Data

Data for Harrington 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).

Harrington Threshold Days by Year (USC00393574)

Key Facts for Harrington Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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