Lewes Threshold Days by Year (USC00075320)

16 fixed thresholds counted per year at Lewes (USC00075320): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Lewes Thresholds

Lewes: days with 10 mm (0.39 in) or more of precipitation in 71 years, most in 1948 with 58.
Lewes: days with 25 mm (0.98 in) or more of precipitation in 71 years, most in 1948 with 21.
Lewes: nights with a minimum temperature at or below 0 C (32 F) in 69 years, most in 1947 with 111.
Lewes: nights with a minimum temperature at or above 20 C (68 F) in 69 years, most in 2005 with 82.
16 fixed thresholds have at least one qualifying day at Lewes.

Days at or above 30 C (86 F)

68 years with a qualifying day

Days per year at Lewes with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 74 in 1985.

Days at or above 30 C (86 F) per year at Lewes
Year	Days	Decade average
1945	42	33.2
1946	10	33.2
1947	28	33.2
1948	39	33.2
1949	47	33.2
1950	26	43.7
1951	28	43.7
1952	51	43.7
1953	43	43.7
1954	43	43.7
1955	45	43.7
1956	47	43.7
1957	58	43.7
1958	38	43.7
1959	58	43.7
1960	24	38
1961	45	38
1962	39	38
1963	37	38
1964	43	38
1965	42	38
1966	48	38
1967	20	38
1968	42	38
1969	40	38
1970	48	38
1971	30	38
1972	30	38
1973	44	38
1974	31	38
1975	39	38
1976	40	38
1977	53	38
1978	34	38
1979	31	38
1982	46	56.7
1984	30	56.7
1985	74	56.7
1986	71	56.7
1987	63	56.7
1988	66	56.7
1989	47	56.7
1990	54	56
1991	68	56
1992	35	56
1993	54	56
1994	55	56
1995	52	56
1997	67	56
1998	55	56
1999	64	56
2000	47	56.7
2001	52	56.7
2002	64	56.7
2003	53	56.7
2004	49	56.7
2005	66	56.7
2006	61	56.7
2007	63	56.7
2008	67	56.7
2009	45	56.7
2020	41	40.9
2021	48	40.9
2022	50	40.9
2023	33	40.9
2024	37	40.9
2025	30	40.9
2026	47	40.9

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

First to last qualifying date each year at Lewes
Year	First date	Last date
1945	1945-03-16	1945-09-29
1946	1946-06-08	1946-09-10
1947	1947-05-13	1947-10-23
1948	1948-03-21	1948-09-20
1949	1949-05-05	1949-10-11
1950	1950-05-06	1950-11-01
1951	1951-04-26	1951-09-02
1952	1952-04-23	1952-09-18
1953	1953-04-25	1953-09-04
1954	1954-05-03	1954-10-13
1955	1955-05-05	1955-08-27
1956	1956-05-12	1956-09-23
1957	1957-04-21	1957-09-22
1958	1958-06-09	1958-09-26
1959	1959-04-09	1959-10-11
1960	1960-04-14	1960-09-09
1961	1961-04-25	1961-09-23
1962	1962-04-26	1962-10-12
1963	1963-04-02	1963-09-20
1964	1964-05-08	1964-09-12
1965	1965-05-04	1965-09-24
1966	1966-06-05	1966-09-06
1967	1967-06-10	1967-10-05
1968	1968-05-03	1968-10-03
1969	1969-05-29	1969-09-17
1970	1970-05-09	1970-09-27
1971	1971-06-07	1971-08-21
1972	1972-06-04	1972-09-17
1973	1973-06-04	1973-09-29
1974	1974-04-29	1974-09-29
1975	1975-05-27	1975-10-15
1976	1976-04-16	1976-09-12
1977	1977-04-12	1977-10-02
1978	1978-05-20	1978-09-18
1979	1979-05-09	1979-09-06
1982	1982-05-30	1982-09-18
1984	1984-05-22	1984-09-25
1985	1985-04-19	1985-09-11
1986	1986-05-01	1986-10-04
1987	1987-05-10	1987-09-17
1988	1988-05-23	1988-09-23
1989	1989-05-26	1989-09-21
1990	1990-04-26	1990-10-09
1991	1991-04-08	1991-09-19
1992	1992-05-22	1992-09-22
1993	1993-06-09	1993-09-26
1994	1994-04-27	1994-09-17
1995	1995-06-02	1995-09-15
1997	1997-02-27	1997-10-06
1998	1998-03-30	1998-09-28
1999	1999-05-29	1999-09-09
2000	2000-05-05	2000-10-04
2001	2001-04-23	2001-09-11
2002	2002-04-16	2002-10-06
2003	2003-04-16	2003-09-02
2004	2004-04-19	2004-08-29
2005	2005-04-20	2005-09-26
2006	2006-05-26	2006-08-30
2007	2007-04-30	2007-10-09
2008	2008-05-31	2008-10-16
2009	2009-04-25	2009-09-23
2020	2020-06-03	2020-09-04
2021	2021-04-28	2021-09-15
2022	2022-05-21	2022-09-05
2023	2023-06-11	2023-09-09
2024	2024-05-02	2024-08-28
2025	2025-05-02	2025-09-06
2026	2026-03-11	2026-08-30

Every Fixed Threshold

Fixed thresholds at Lewes
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	68	74	1985	47
35 C (95 F): Days	52	24	1997	9
90 F (32.2 C): Days	68	45	1997	24
100 F (37.8 C): Days	10	7	1997	1
0 C (32 F): Ice days (max	63	26	1977	15
0 C (32 F): Frost days (min	69	111	1947	53
-10 C (14 F): Days with min	56	25	1977	8
-20 C (-4 F): Days with min	6	2	1961	1
20 C (68 F): Tropical nights (min	69	82	2005	62
25 C (77 F): Days with min	42	12	2002	5
10 mm (0.39 in): Days with 10 mm or more rain	71	58	1948	21
25 mm (0.98 in): Days with 25 mm or more rain	71	21	1948	8
50 mm (1.97 in): Days with 50 mm or more rain	67	6	1948	1
100 mm (3.94 in): Days with 100 mm or more rain	12	2	1960	1
10 cm (3.9 in): Days with 10 cm or more snowfall	32	4	1966	1
25 cm (9.8 in): Days with 25 cm or more snowfall	5	1	1969	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1945.

Download the Data

Data for Lewes 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 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Lewes Threshold Days by Year (USC00075320)

Key Facts for Lewes Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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