Glasgow Threshold Days by Year (USC00153241)

16 fixed thresholds counted per year at Glasgow (USC00153241): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Glasgow Thresholds

Glasgow: days with 10 mm (0.39 in) or more of precipitation in 41 years, most in 1950 with 60.
Glasgow: days with 25 mm (0.98 in) or more of precipitation in 41 years, most in 1926 with 25.
Glasgow: days with 50 mm (1.97 in) or more of precipitation in 39 years, most in 1926 with 6.
Glasgow: nights with a minimum temperature at or below 0 C (32 F) in 12 years, most in 1926 with 102.
16 fixed thresholds have at least one qualifying day at Glasgow.

Days at or above 30 C (86 F)

11 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 116 in 1925.

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
1922	1922-05-10	1922-10-05
1923	1923-06-03	1923-09-29
1924	1924-05-05	1924-10-19
1925	1925-04-23	1925-09-30
1926	1926-05-06	1926-10-09
1935	1935-04-25	1935-09-25
1936	1936-05-06	1936-09-28
1939	1939-03-25	1939-10-10
1940	1940-05-06	1940-09-24
1941	1941-05-15	1941-10-20
1942	1942-04-29	1942-09-20

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	11	116	1925	90
35 C (95 F): Days	11	55	1925	11
40 C (104 F): Days	3	10	1936	10
90 F (32.2 C): Days	11	98	1925	49
100 F (37.8 C): Days	4	27	1936	27
0 C (32 F): Ice days (max	11	20	1936	15
0 C (32 F): Frost days (min	12	102	1926	88
-10 C (14 F): Days with min	12	20	1936	13
-20 C (-4 F): Days with min	5	5	1936	4
20 C (68 F): Tropical nights (min	12	57	1925	51
25 C (77 F): Days with min	7	7	1926	1
10 mm (0.39 in): Days with 10 mm or more rain	41	60	1950	49
25 mm (0.98 in): Days with 25 mm or more rain	41	25	1926	15
50 mm (1.97 in): Days with 50 mm or more rain	39	6	1926	6
100 mm (3.94 in): Days with 100 mm or more rain	7	1	1949	1
10 cm (3.9 in): Days with 10 cm or more snowfall	10	2	1951	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1922.

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 (USC00153241)

Key Facts for Glasgow Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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