Glasgow Threshold Days by Year (USW00094008)

18 fixed thresholds counted per year at Glasgow (USW00094008): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Glasgow Thresholds

Glasgow: days with a maximum temperature at or above 30 C (86 F) in 79 years, most in 2021 with 77.
Glasgow: days with a maximum temperature at or above 90 F (32.2 C) in 79 years, most in 2021 with 56.
Glasgow: days with a maximum temperature at or below 0 C (32 F) in 79 years, most in 1978 with 111.
Glasgow: nights with a minimum temperature at or below 0 C (32 F) in 79 years, most in 2002 with 215.
18 fixed thresholds have at least one qualifying day at Glasgow.

Days at or above 30 C (86 F)

79 years with a qualifying day

Days per year at Glasgow with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 77 in 2021.

Days at or above 30 C (86 F) per year at Glasgow
Year	Days	Decade average
1948	56	60.5
1949	65	60.5
1950	38	39.9
1951	33	39.9
1952	40	39.9
1953	43	39.9
1954	39	39.9
1955	49	39.9
1956	36	39.9
1957	46	39.9
1958	39	39.9
1959	36	39.9
1960	43	37.5
1961	59	37.5
1962	17	37.5
1963	39	37.5
1964	44	37.5
1965	25	37.5
1966	37	37.5
1967	41	37.5
1968	30	37.5
1969	40	37.5
1970	52	35.2
1971	49	35.2
1972	25	35.2
1973	38	35.2
1974	33	35.2
1975	26	35.2
1976	33	35.2
1977	27	35.2
1978	24	35.2
1979	45	35.2
1980	40	44.3
1981	50	44.3
1982	32	44.3
1983	47	44.3
1984	56	44.3
1985	30	44.3
1986	42	44.3
1987	43	44.3
1988	62	44.3
1989	41	44.3
1990	53	38
1991	44	38
1992	28	38
1993	12	38
1994	38	38
1995	36	38
1996	41	38
1997	40	38
1998	56	38
1999	32	38
2000	38	43.8
2001	45	43.8
2002	34	43.8
2003	61	43.8
2004	17	43.8
2005	42	43.8
2006	63	43.8
2007	51	43.8
2008	41	43.8
2009	46	43.8
2010	36	44.2
2011	51	44.2
2012	54	44.2
2013	38	44.2
2014	38	44.2
2015	49	44.2
2016	34	44.2
2017	52	44.2
2018	51	44.2
2019	39	44.2
2020	52	58
2021	77	58
2022	68	58
2023	57	58
2024	58	58
2025	45	58
2026	49	58

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

First to last qualifying date each year at Glasgow
Year	First date	Last date
1948	1948-05-17	1948-09-22
1949	1949-04-19	1949-09-24
1950	1950-05-27	1950-09-25
1951	1951-05-12	1951-08-22
1952	1952-04-19	1952-09-26
1953	1953-05-06	1953-09-16
1954	1954-05-19	1954-08-31
1955	1955-06-14	1955-10-10
1956	1956-05-21	1956-09-26
1957	1957-05-02	1957-10-01
1958	1958-05-11	1958-09-12
1959	1959-06-02	1959-09-13
1960	1960-05-12	1960-09-19
1961	1961-05-28	1961-08-31
1962	1962-04-24	1962-08-26
1963	1963-05-30	1963-10-03
1964	1964-05-17	1964-10-13
1965	1965-07-06	1965-08-22
1966	1966-05-26	1966-09-11
1967	1967-06-27	1967-09-29
1968	1968-06-02	1968-09-11
1969	1969-05-25	1969-09-18
1970	1970-06-04	1970-10-04
1971	1971-05-13	1971-09-11
1972	1972-05-17	1972-08-30
1973	1973-05-19	1973-08-30
1974	1974-04-25	1974-08-18
1975	1975-06-24	1975-09-16
1976	1976-05-28	1976-09-17
1977	1977-04-26	1977-08-24
1978	1978-05-15	1978-09-05
1979	1979-06-11	1979-10-04
1980	1980-04-20	1980-10-08
1981	1981-06-26	1981-09-19
1982	1982-06-22	1982-09-09
1983	1983-06-10	1983-09-26
1984	1984-05-15	1984-09-18
1985	1985-05-02	1985-08-30
1986	1986-05-20	1986-08-30
1987	1987-04-28	1987-10-03
1988	1988-05-16	1988-09-06
1989	1989-06-19	1989-09-30
1990	1990-04-21	1990-09-25
1991	1991-06-11	1991-10-16
1992	1992-04-27	1992-10-01
1993	1993-05-12	1993-09-11
1994	1994-06-23	1994-09-09
1995	1995-05-31	1995-10-11
1996	1996-06-07	1996-08-31
1997	1997-05-15	1997-10-02
1998	1998-05-26	1998-09-17
1999	1999-06-19	1999-09-23
2000	2000-06-07	2000-09-17
2001	2001-04-27	2001-09-27
2002	2002-06-22	2002-09-16
2003	2003-05-25	2003-09-08
2004	2004-06-05	2004-09-01
2005	2005-06-17	2005-09-09
2006	2006-05-16	2006-09-13
2007	2007-05-17	2007-09-16
2008	2008-05-18	2008-09-20
2009	2009-05-30	2009-09-26
2010	2010-05-18	2010-09-28
2011	2011-06-29	2011-10-04
2012	2012-04-23	2012-09-18
2013	2013-05-12	2013-09-13
2014	2014-05-23	2014-09-25
2015	2015-06-01	2015-10-10
2016	2016-05-05	2016-09-27
2017	2017-05-05	2017-09-11
2018	2018-05-16	2018-09-10
2019	2019-05-30	2019-09-16
2020	2020-05-31	2020-09-22
2021	2021-05-17	2021-10-05
2022	2022-06-10	2022-09-29
2023	2023-05-16	2023-09-26
2024	2024-06-11	2024-09-29
2025	2025-05-04	2025-09-30
2026	2026-05-13	2026-09-10

Every Fixed Threshold

Fixed thresholds at Glasgow
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	79	77	2021	49
35 C (95 F): Days	78	29	1988	13
40 C (104 F): Days	18	4	1988	1
90 F (32.2 C): Days	79	56	2021	27
100 F (37.8 C): Days	60	15	2021	3
110 F (43.3 C): Days	1	1	2021	1
0 C (32 F): Ice days (max	79	111	1978	29
0 C (32 F): Frost days (min	79	215	2002	113
-10 C (14 F): Days with min	79	120	1955	28
-20 C (-4 F): Days with min	79	61	1949	8
-30 C (-22 F): Days with min	70	21	1950	1
-40 C (-40 F): Days with min	4	8	1950	1
20 C (68 F): Tropical nights (min	49	13	1988	5
10 mm (0.39 in): Days with 10 mm or more rain	79	14	1963	11
25 mm (0.98 in): Days with 25 mm or more rain	59	7	2011	3
50 mm (1.97 in): Days with 50 mm or more rain	10	2	1985	1
10 cm (3.9 in): Days with 10 cm or more snowfall	56	8	2011	2
25 cm (9.8 in): Days with 25 cm or more snowfall	6	2	2008	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1948.

Download the Data

Data for Glasgow 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Glasgow Threshold Days by Year (USW00094008)

Key Facts for Glasgow Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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