Preston Threshold Days by Year (USC00216654)

18 fixed thresholds counted per year at Preston (USC00216654): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Preston Thresholds

Preston: days with 10 mm (0.39 in) or more of precipitation in 71 years, most in 1973 with 41.
Preston: days with 25 mm (0.98 in) or more of precipitation in 71 years, most in 1959 with 14.
Preston: days with a maximum temperature at or above 30 C (86 F) in 67 years, most in 1955 with 56.
Preston: days with a maximum temperature at or below 0 C (32 F) in 67 years, most in 1996 with 98.
18 fixed thresholds have at least one qualifying day at Preston.

Days at or above 30 C (86 F)

67 years with a qualifying day

Days per year at Preston with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 56 in 1955.

Days at or above 30 C (86 F) per year at Preston
Year	Days	Decade average
1953	40	33.7
1954	37	33.7
1955	56	33.7
1956	15	33.7
1957	36	33.7
1958	19	33.7
1959	33	33.7
1960	32	25.3
1961	23	25.3
1962	19	25.3
1964	51	25.3
1965	14	25.3
1966	32	25.3
1967	13	25.3
1968	26	25.3
1969	18	25.3
1970	45	37
1971	34	37
1973	32	37
1974	24	37
1975	48	37
1976	51	37
1977	35	37
1978	42	37
1979	22	37
1980	44	30
1981	14	30
1982	18	30
1983	50	30
1984	20	30
1985	29	30
1986	22	30
1987	43	30
1989	30	30
1990	13	19.7
1991	33	19.7
1993	8	19.7
1994	15	19.7
1995	31	19.7
1996	12	19.7
1997	16	19.7
1998	22	19.7
1999	27	19.7
2000	13	24
2001	37	24
2002	36	24
2003	31	24
2004	8	24
2005	32	24
2006	23	24
2007	34	24
2008	15	24
2009	11	24
2010	37	25.9
2011	36	25.9
2012	46	25.9
2013	26	25.9
2014	10	25.9
2015	14	25.9
2016	15	25.9
2017	23	25.9
2020	23	23.7
2021	27	23.7
2022	17	23.7
2023	37	23.7
2025	23	23.7
2026	15	23.7

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

First to last qualifying date each year at Preston
Year	First date	Last date
1953	1953-05-29	1953-10-16
1954	1954-06-11	1954-09-06
1955	1955-05-02	1955-09-18
1956	1956-05-12	1956-08-28
1957	1957-04-30	1957-09-02
1958	1958-06-28	1958-08-28
1959	1959-05-02	1959-09-08
1960	1960-04-22	1960-09-07
1961	1961-05-31	1961-09-09
1962	1962-05-15	1962-09-12
1964	1964-04-16	1964-09-09
1965	1965-05-02	1965-08-17
1966	1966-05-26	1966-09-01
1967	1967-05-18	1967-07-31
1968	1968-06-04	1968-09-04
1969	1969-05-27	1969-08-30
1970	1970-04-29	1970-09-21
1971	1971-06-04	1971-09-30
1973	1973-06-08	1973-09-02
1974	1974-06-20	1974-08-21
1975	1975-05-19	1975-08-25
1976	1976-06-08	1976-10-02
1977	1977-05-13	1977-08-27
1978	1978-05-25	1978-09-11
1979	1979-06-03	1979-09-05
1980	1980-04-21	1980-09-09
1981	1981-06-05	1981-09-11
1982	1982-06-29	1982-08-20
1983	1983-06-22	1983-09-10
1984	1984-06-06	1984-09-20
1985	1985-04-19	1985-09-20
1986	1986-06-01	1986-09-27
1987	1987-04-21	1987-09-06
1989	1989-06-03	1989-08-23
1990	1990-06-27	1990-09-07
1991	1991-04-07	1991-09-10
1993	1993-07-28	1993-08-27
1994	1994-04-19	1994-09-16
1995	1995-06-17	1995-08-31
1996	1996-06-13	1996-08-22
1997	1997-06-23	1997-10-07
1998	1998-05-15	1998-09-20
1999	1999-06-06	1999-09-06
2000	2000-06-09	2000-09-19
2001	2001-05-15	2001-08-24
2002	2002-04-16	2002-09-10
2003	2003-04-15	2003-09-12
2004	2004-04-29	2004-08-27
2005	2005-06-07	2005-10-05
2006	2006-05-29	2006-08-24
2007	2007-04-30	2007-10-07
2008	2008-06-26	2008-09-03
2009	2009-04-25	2009-08-15
2010	2010-05-24	2010-10-10
2011	2011-05-11	2011-09-13
2012	2012-05-19	2012-09-12
2013	2013-05-15	2013-09-11
2014	2014-06-01	2014-09-06
2015	2015-06-10	2015-09-07
2016	2016-05-07	2016-08-19
2017	2017-06-03	2017-09-25
2020	2020-06-02	2020-08-28
2021	2021-05-02	2021-09-20
2022	2022-05-12	2022-09-21
2023	2023-04-13	2023-10-03
2025	2025-06-03	2025-10-05
2026	2026-05-16	2026-07-29

Every Fixed Threshold

Fixed thresholds at Preston
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	67	56	1955	15
35 C (95 F): Days	34	15	1955	5
90 F (32.2 C): Days	63	37	1955	6
100 F (37.8 C): Days	6	2	1955	1
0 C (32 F): Ice days (max	67	98	1996	37
0 C (32 F): Frost days (min	65	192	1976	96
-10 C (14 F): Days with min	65	96	2014	37
-20 C (-4 F): Days with min	65	45	1978	13
-30 C (-22 F): Days with min	45	10	1965	2
-40 C (-40 F): Days with min	1	1	1996	1
20 C (68 F): Tropical nights (min	63	20	1955	8
25 C (77 F): Days with min	5	2	2011	1
10 mm (0.39 in): Days with 10 mm or more rain	71	41	1973	16
25 mm (0.98 in): Days with 25 mm or more rain	71	14	1959	6
50 mm (1.97 in): Days with 50 mm or more rain	56	5	2016	2
100 mm (3.94 in): Days with 100 mm or more rain	9	2	1983	1
10 cm (3.9 in): Days with 10 cm or more snowfall	58	7	1962	4
25 cm (9.8 in): Days with 25 cm or more snowfall	8	1	1957	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1953.

Download the Data

Data for Preston 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).

Preston Threshold Days by Year (USC00216654)

Key Facts for Preston Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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