Glasgow Threshold Days by Year (USC00153246)

18 fixed thresholds counted per year at Glasgow (USC00153246): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Glasgow Thresholds

Glasgow: nights with a minimum temperature at or below 0 C (32 F) in 49 years, most in 1960 with 114.
Glasgow: nights with a minimum temperature at or below -10 C (14 F) in 49 years, most in 1977 with 34.
Glasgow: nights with a minimum temperature at or above 20 C (68 F) in 49 years, most in 2002 with 67.
Glasgow: days with 10 mm (0.39 in) or more of precipitation in 49 years, most in 1996 with 60.
18 fixed thresholds have at least one qualifying day at Glasgow.

Days at or above 30 C (86 F)

47 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 128 in 2007.

Days at or above 30 C (86 F) per year at Glasgow
Year	Days	Decade average
1954	102	76
1955	86	76
1956	73	76
1957	65	76
1958	58	76
1959	72	76
1960	71	68.1
1961	63	68.1
1962	91	68.1
1963	67	68.1
1964	84	68.1
1965	57	68.1
1966	62	68.1
1967	37	68.1
1968	67	68.1
1969	82	68.1
1970	68	62
1971	56	62
1972	66	62
1973	75	62
1974	47	62
1975	82	62
1976	45	62
1977	74	62
1978	69	62
1979	38	62
1980	96	79.5
1981	70	79.5
1982	59	79.5
1983	88	79.5
1984	59	79.5
1985	62	79.5
1986	94	79.5
1987	114	79.5
1988	98	79.5
1989	55	79.5
1990	75	93.7
1991	97	93.7
1995	105	93.7
1996	89	93.7
1997	75	93.7
1998	114	93.7
1999	101	93.7
2000	83	100.5
2002	112	100.5
2003	79	100.5
2007	128	100.5

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
1954	1954-05-30	1954-10-05
1955	1955-04-18	1955-09-29
1956	1956-05-12	1956-10-01
1957	1957-04-27	1957-09-11
1958	1958-05-31	1958-09-26
1959	1959-05-01	1959-10-05
1960	1960-04-23	1960-09-23
1961	1961-05-31	1961-10-12
1962	1962-04-30	1962-09-13
1963	1963-04-21	1963-10-22
1964	1964-04-20	1964-09-21
1965	1965-04-23	1965-09-22
1966	1966-05-08	1966-09-03
1967	1967-05-25	1967-09-20
1968	1968-05-02	1968-09-24
1969	1969-05-05	1969-10-12
1970	1970-04-30	1970-09-24
1971	1971-04-20	1971-10-03
1972	1972-05-25	1972-09-25
1973	1973-05-26	1973-10-04
1974	1974-05-17	1974-09-12
1975	1975-05-20	1975-09-10
1976	1976-04-20	1976-09-07
1977	1977-05-16	1977-09-06
1978	1978-04-09	1978-09-21
1979	1979-05-08	1979-08-31
1980	1980-04-23	1980-10-09
1981	1981-04-27	1981-09-14
1982	1982-05-05	1982-09-14
1983	1983-05-11	1983-10-03
1984	1984-05-25	1984-09-22
1985	1985-04-21	1985-09-10
1986	1986-04-25	1986-10-03
1987	1987-04-22	1987-09-28
1988	1988-04-05	1988-09-23
1989	1989-04-24	1989-09-09
1990	1990-04-24	1990-09-26
1991	1991-05-15	1991-09-18
1995	1995-04-10	1995-09-16
1996	1996-05-09	1996-09-12
1997	1997-05-18	1997-10-08
1998	1998-05-13	1998-10-05
1999	1999-05-11	1999-09-28
2000	2000-05-06	2000-10-05
2002	2002-04-16	2002-10-03
2003	2003-04-15	2003-09-13
2007	2007-03-25	2007-10-17

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	47	128	2007	128
35 C (95 F): Days	37	38	1999	28
40 C (104 F): Days	2	2	1988	1
90 F (32.2 C): Days	47	77	2007	77
100 F (37.8 C): Days	12	13	1988	6
0 C (32 F): Ice days (max	47	34	1978	6
0 C (32 F): Frost days (min	49	114	1960	76
-10 C (14 F): Days with min	49	34	1977	10
-20 C (-4 F): Days with min	19	4	1962	1
-30 C (-22 F): Days with min	1	1	1963	1
20 C (68 F): Tropical nights (min	49	67	2002	54
25 C (77 F): Days with min	3	2	1980	1
10 mm (0.39 in): Days with 10 mm or more rain	49	60	1996	40
25 mm (0.98 in): Days with 25 mm or more rain	49	20	1972	12
50 mm (1.97 in): Days with 50 mm or more rain	49	6	1977	5
100 mm (3.94 in): Days with 100 mm or more rain	7	2	1973	1
10 cm (3.9 in): Days with 10 cm or more snowfall	20	5	1960	1
25 cm (9.8 in): Days with 25 cm or more snowfall	3	1	1960	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1954.

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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Glasgow Threshold Days by Year (USC00153246)

Key Facts for Glasgow Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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