Selby Threshold Days by Year (USC00397545)

20 fixed thresholds counted per year at Selby (USC00397545): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Selby Thresholds

Selby: days with 10 mm (0.39 in) or more of precipitation in 72 years, most in 1996 with 21.
Selby: days with 25 mm (0.98 in) or more of precipitation in 72 years, most in 2007 with 10.
Selby: days with a maximum temperature at or above 30 C (86 F) in 61 years, most in 1976 with 68.
Selby: days with a maximum temperature at or above 90 F (32.2 C) in 61 years, most in 1988 with 48.
20 fixed thresholds have at least one qualifying day at Selby.

Days at or above 30 C (86 F)

61 years with a qualifying day

Days per year at Selby with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 68 in 1976.

Days at or above 30 C (86 F) per year at Selby
Year	Days	Decade average
1911	53	42
1912	31	42
1963	55	50.4
1964	50	50.4
1965	28	50.4
1966	66	50.4
1967	55	50.4
1968	38	50.4
1969	61	50.4
1970	62	45.2
1971	37	45.2
1972	42	45.2
1973	57	45.2
1974	48	45.2
1975	38	45.2
1976	68	45.2
1977	33	45.2
1978	38	45.2
1979	29	45.2
1980	59	44.5
1981	27	44.5
1982	38	44.5
1983	47	44.5
1984	43	44.5
1985	35	44.5
1986	27	44.5
1987	48	44.5
1988	67	44.5
1989	54	44.5
1990	43	28.1
1991	37	28.1
1992	17	28.1
1993	9	28.1
1994	22	28.1
1995	34	28.1
1996	27	28.1
1997	31	28.1
1998	42	28.1
1999	19	28.1
2000	34	41.2
2001	48	41.2
2002	54	41.2
2003	51	41.2
2004	29	41.2
2005	44	41.2
2006	61	41.2
2007	43	41.2
2008	27	41.2
2009	21	41.2
2011	36	37.3
2012	58	37.3
2013	37	37.3
2014	19	37.3
2015	43	37.3
2016	37	37.3
2017	39	37.3
2018	43	37.3
2019	24	37.3
2020	44	47.7
2021	59	47.7
2022	40	47.7

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

First to last qualifying date each year at Selby
Year	First date	Last date
1911	1911-05-09	1911-09-21
1912	1912-06-24	1912-09-06
1963	1963-05-07	1963-10-06
1964	1964-05-20	1964-10-15
1965	1965-07-04	1965-08-17
1966	1966-05-04	1966-10-07
1967	1967-05-22	1967-09-25
1968	1968-04-30	1968-09-15
1969	1969-05-14	1969-09-22
1970	1970-05-08	1970-10-06
1971	1971-06-24	1971-09-14
1972	1972-05-16	1972-09-20
1973	1973-06-02	1973-09-02
1974	1974-06-04	1974-09-27
1975	1975-05-17	1975-10-08
1976	1976-05-15	1976-10-01
1977	1977-04-10	1977-09-06
1978	1978-06-16	1978-09-26
1979	1979-05-29	1979-09-27
1980	1980-04-21	1980-10-09
1981	1981-06-27	1981-09-13
1982	1982-05-04	1982-09-11
1983	1983-06-11	1983-09-27
1984	1984-05-16	1984-09-21
1985	1985-04-29	1985-09-05
1986	1986-06-04	1986-08-25
1987	1987-04-19	1987-09-24
1988	1988-05-27	1988-09-11
1989	1989-04-23	1989-10-01
1990	1990-06-12	1990-10-06
1991	1991-05-15	1991-10-17
1992	1992-05-01	1992-10-02
1993	1993-06-23	1993-10-07
1994	1994-05-18	1994-09-20
1995	1995-06-15	1995-10-12
1996	1996-04-11	1996-09-10
1997	1997-05-18	1997-10-03
1998	1998-05-18	1998-09-19
1999	1999-06-25	1999-09-01
2000	2000-05-05	2000-09-19
2001	2001-04-29	2001-09-07
2002	2002-05-29	2002-09-18
2003	2003-04-14	2003-10-20
2004	2004-05-11	2004-09-19
2005	2005-05-21	2005-10-02
2006	2006-05-19	2006-09-15
2007	2007-05-14	2007-09-30
2008	2008-04-16	2008-09-20
2009	2009-04-24	2009-09-19
2011	2011-06-07	2011-10-06
2012	2012-04-02	2012-09-16
2013	2013-05-14	2013-09-23
2014	2014-05-29	2014-09-28
2015	2015-05-03	2015-10-12
2016	2016-05-06	2016-09-12
2017	2017-05-08	2017-09-13
2018	2018-05-17	2018-09-13
2019	2019-06-05	2019-09-18
2020	2020-06-02	2020-09-23
2021	2021-05-20	2021-09-29
2022	2022-06-13	2022-09-20

Every Fixed Threshold

Fixed thresholds at Selby
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	61	68	1976	40
35 C (95 F): Days	60	26	1988	11
40 C (104 F): Days	14	4	1973	1
90 F (32.2 C): Days	61	48	1988	24
100 F (37.8 C): Days	37	13	1988	2
110 F (43.3 C): Days	2	1	1973	1
0 C (32 F): Ice days (max	61	113	2019	86
0 C (32 F): Frost days (min	59	203	2013	191
-10 C (14 F): Days with min	59	114	1978	101
-20 C (-4 F): Days with min	59	56	1978	41
-30 C (-22 F): Days with min	47	14	1996	2
-40 C (-40 F): Days with min	1	1	1912	1
20 C (68 F): Tropical nights (min	52	14	2002	1
25 C (77 F): Days with min	5	3	1911	1
10 mm (0.39 in): Days with 10 mm or more rain	72	21	1996	13
25 mm (0.98 in): Days with 25 mm or more rain	72	10	2007	2
50 mm (1.97 in): Days with 50 mm or more rain	21	3	1964	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1976	1
10 cm (3.9 in): Days with 10 cm or more snowfall	45	8	2019	1
25 cm (9.8 in): Days with 25 cm or more snowfall	7	2	2009	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1911.

Download the Data

Data for Selby 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).

Selby Threshold Days by Year (USC00397545)

Key Facts for Selby Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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