Hawarden Threshold Days by Year (USC00133718)

18 fixed thresholds counted per year at Hawarden (USC00133718): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Hawarden Thresholds

Hawarden: days with 10 mm (0.39 in) or more of precipitation in 91 years, most in 2018 with 35.
Hawarden: days with 25 mm (0.98 in) or more of precipitation in 90 years, most in 2019 with 14.
Hawarden: days with a maximum temperature at or above 30 C (86 F) in 82 years, most in 1939 with 95.
Hawarden: days with a maximum temperature at or above 90 F (32.2 C) in 82 years, most in 1939 with 54.
18 fixed thresholds have at least one qualifying day at Hawarden.

Days at or above 30 C (86 F)

82 years with a qualifying day

Days per year at Hawarden with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 95 in 1939.

Days at or above 30 C (86 F) per year at Hawarden
Year	Days	Decade average
1938	72	83.5
1939	95	83.5
1940	50	53.6
1941	57	53.6
1942	49	53.6
1943	63	53.6
1944	52	53.6
1945	39	53.6
1946	46	53.6
1947	62	53.6
1948	58	53.6
1949	60	53.6
1950	34	53.5
1951	26	53.5
1952	55	53.5
1953	54	53.5
1954	50	53.5
1955	76	53.5
1956	76	53.5
1957	44	53.5
1958	54	53.5
1959	66	53.5
1960	42	44.4
1961	44	44.4
1962	33	44.4
1963	61	44.4
1964	58	44.4
1965	36	44.4
1966	48	44.4
1967	39	44.4
1968	52	44.4
1969	31	44.4
1970	64	51.6
1971	49	51.6
1972	45	51.6
1973	53	51.6
1974	38	51.6
1975	48	51.6
1976	61	51.6
1977	50	51.6
1978	61	51.6
1979	47	51.6
1980	65	50.7
1981	43	50.7
1982	36	50.7
1983	72	50.7
1984	35	50.7
1985	38	50.7
1986	39	50.7
1987	63	50.7
1988	75	50.7
1989	41	50.7
1990	61	35.6
1991	57	35.6
1992	11	35.6
1993	17	35.6
1994	31	35.6
1995	46	35.6
1996	21	35.6
1997	32	35.6
1998	49	35.6
1999	31	35.6
2000	52	48.5
2001	56	48.5
2002	63	48.5
2003	50	48.5
2004	30	48.5
2005	53	48.5
2006	61	48.5
2007	62	48.5
2008	33	48.5
2009	25	48.5
2010	46	48.8
2011	48	48.8
2012	79	48.8
2013	50	48.8
2014	28	48.8
2015	41	48.8
2016	53	48.8
2017	51	48.8
2018	52	48.8
2019	40	48.8

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

First to last qualifying date each year at Hawarden
Year	First date	Last date
1938	1938-06-05	1938-10-07
1939	1939-04-23	1939-10-06
1940	1940-04-14	1940-09-22
1941	1941-05-14	1941-09-20
1942	1942-04-29	1942-10-07
1943	1943-03-30	1943-09-28
1944	1944-05-14	1944-09-17
1945	1945-06-13	1945-10-18
1946	1946-04-17	1946-09-26
1947	1947-06-09	1947-10-21
1948	1948-05-19	1948-09-19
1949	1949-04-25	1949-09-20
1950	1950-05-22	1950-10-30
1951	1951-06-16	1951-10-01
1952	1952-04-28	1952-09-30
1953	1953-05-25	1953-10-15
1954	1954-04-14	1954-09-26
1955	1955-04-19	1955-10-10
1956	1956-05-12	1956-10-12
1957	1957-05-07	1957-09-02
1958	1958-05-10	1958-10-19
1959	1959-05-01	1959-09-14
1960	1960-04-21	1960-10-11
1961	1961-05-31	1961-10-16
1962	1962-04-21	1962-10-10
1963	1963-04-01	1963-10-06
1964	1964-04-16	1964-09-09
1965	1965-04-28	1965-08-17
1966	1966-05-04	1966-10-08
1967	1967-04-16	1967-10-02
1968	1968-03-30	1968-09-14
1969	1969-05-15	1969-08-29
1970	1970-04-28	1970-09-20
1971	1971-06-03	1971-09-13
1972	1972-05-16	1972-09-20
1973	1973-05-20	1973-09-01
1974	1974-06-03	1974-09-26
1975	1975-05-17	1975-10-13
1976	1976-05-19	1976-09-12
1977	1977-04-09	1977-09-08
1978	1978-05-24	1978-09-12
1979	1979-05-28	1979-09-05
1980	1980-04-20	1980-10-09
1981	1981-04-25	1981-09-29
1982	1982-06-23	1982-09-10
1983	1983-05-27	1983-09-28
1984	1984-06-21	1984-09-19
1985	1985-04-17	1985-09-08
1986	1986-06-12	1986-08-25
1987	1987-04-19	1987-09-26
1988	1988-04-07	1988-09-17
1989	1989-04-27	1989-09-01
1990	1990-04-22	1990-10-06
1991	1991-04-05	1991-09-29
1992	1992-04-30	1992-10-02
1993	1993-06-10	1993-10-07
1994	1994-04-19	1994-09-15
1995	1995-06-07	1995-10-13
1996	1996-05-18	1996-08-26
1997	1997-05-18	1997-10-03
1998	1998-05-05	1998-09-29
1999	1999-05-29	1999-09-26
2000	2000-05-05	2000-10-02
2001	2001-04-27	2001-10-03
2002	2002-04-16	2002-10-01
2003	2003-06-15	2003-10-21
2004	2004-04-19	2004-09-21
2005	2005-06-07	2005-10-04
2006	2006-04-14	2006-10-08
2007	2007-04-30	2007-10-07
2008	2008-06-18	2008-09-27
2009	2009-04-24	2009-08-25
2010	2010-05-23	2010-10-09
2011	2011-05-10	2011-10-05
2012	2012-04-02	2012-09-12
2013	2013-04-29	2013-09-27
2014	2014-05-08	2014-09-20
2015	2015-05-29	2015-10-12
2016	2016-05-07	2016-09-24
2017	2017-05-09	2017-09-25
2018	2018-05-01	2018-10-04
2019	2019-05-17	2019-10-01

Every Fixed Threshold

Fixed thresholds at Hawarden
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	82	95	1939	40
35 C (95 F): Days	75	32	1955	4
40 C (104 F): Days	10	4	1947	3
90 F (32.2 C): Days	82	54	1939	16
100 F (37.8 C): Days	37	13	1955	1
0 C (32 F): Ice days (max	82	88	1978	79
0 C (32 F): Frost days (min	81	191	2013	170
-10 C (14 F): Days with min	81	88	1978	75
-20 C (-4 F): Days with min	81	40	1978	13
-30 C (-22 F): Days with min	36	5	1989	2
20 C (68 F): Tropical nights (min	81	52	1983	14
25 C (77 F): Days with min	23	5	1983	1
10 mm (0.39 in): Days with 10 mm or more rain	91	35	2018	31
25 mm (0.98 in): Days with 25 mm or more rain	90	14	2019	14
50 mm (1.97 in): Days with 50 mm or more rain	68	4	1965	2
100 mm (3.94 in): Days with 100 mm or more rain	8	1	1953	1
10 cm (3.9 in): Days with 10 cm or more snowfall	76	7	1994	2
25 cm (9.8 in): Days with 25 cm or more snowfall	12	1	1933	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1938.

Download the Data

Data for Hawarden 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).

Hawarden Threshold Days by Year (USC00133718)

Key Facts for Hawarden Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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