Glasgow Weather

Despite its northerly latitude, similar to that of Moscow, Glasgow’s climate is classified as oceanic .
Data is available online for 3 official weather stations in the Glasgow area: Paisley, Abbotsinch and Bishopton. All are located to the west of the city, in neighbouring Renfrewshire.
Owing to its westerly position and proximity to the Atlantic Ocean, Glasgow is one of Scotland’s milder areas. Winter temperatures are usually higher than in most places of equal latitude away from the UK, due to the warming influence of the Gulf Stream. However, this results in less distinct seasons as compared to continental Western Europe. At Paisley, the annual precipitation averages 1,245 millimetres (49.0 in). Glasgow has been named as the rainiest city of the UK, having an average of 170 days of rain a year.

Winters are cool and overcast, with a January mean of 5.0 °C (41.0 °F), though lows sometimes fall below freezing. Since 2000 Glasgow has experienced few very cold, snowy and harsh winters where temperatures have fallen much below freezing. The most extreme instances have however seen temperatures around −12 °C (10 °F) in the area. Snowfall accumulation is infrequent and short-lived. The spring months (March to May) are usually mild and often quite pleasant. Many of Glasgow’s trees and plants begin to flower at this time of the year and parks and gardens are filled with spring colours.

During the summer months (June to August) the weather can vary considerably from day to day, ranging from relatively cool and wet to quite warm with the odd sunny day. Long dry spells of warm weather are generally quite scarce. Overcast and humid conditions without rain are frequent. Generally the weather pattern is quite unsettled and erratic during these months, with only occasional heatwaves. The warmest month is usually July, with average highs above 20 °C (68 °F). Summer days can occasionally reach up to 27 °C (81 °F), and very rarely exceed 30 °C (86 °F). Autumns are generally cool to mild with increasing precipitation. During early autumn there can be some settled periods of weather and it can feel pleasant with mild temperatures and some sunny days.

The official Met Office data series goes back to 1959 and shows that there only have been a few warm and no hot summers in Glasgow, in stark contrast to areas further south in Great Britain and eastwards in Europe. The warmest month on record in the data series is July 2006, with an average high of 22.7 °C (72.9 °F) and low of 13.7 °C (56.7 °F). Even this extreme event only matched a normal summer on similar parallels in continental Europe, underlining the maritime influences. The coldest month on record since the data series began is December 2010, during a severe cold wave affecting the British Isles. Even then, the December high was above freezing at 1.6 °C (34.9 °F) with the low of −4.4 °C (24.1 °F). This still ensured Glasgow’s coldest month of 2010 remained milder than the isotherm of −3 °C (27 °F) normally used to determine continental climate normals.

Temperature extremes have ranged from −19.9 °C (−4 °F), at Abbotsinch in December 1995 to
31.9 °C (89 °F) at Bishopton in June 2018.

Average Temperature
Jan
41 °F
5 °C
Feb
48 °F
9 °C
Mar
48 °F
9 °C
Apr
52 °F
11 °C
May
55 °F
13 °C
Jun
59 °F
15 °C
Jul
66 °F
19 °C
Aug
64 °F
18 °C
Sep
61 °F
16 °C
Oct
54 °F
12 °C
Nov
43 °F
6 °C
Dec
43 °F
6 °C
Humidity
Jan
81%
Feb
83%
Mar
81%
Apr
74%
May
73%
Jun
77%
Jul
81%
Aug
85%
Sep
84%
Oct
84%
Nov
83%
Dec
87%
Rain
Jan
28mm
Feb
43mm
Mar
71mm
Apr
23mm
May
36mm
Jun
129mm
Jul
68mm
Aug
84mm
Sep
62mm
Oct
85mm
Nov
39mm
Dec
84mm
Clouds
Jan
74%
Feb
79%
Mar
81%
Apr
82%
May
67%
Jun
75%
Jul
68%
Aug
76%
Sep
76%
Oct
66%
Nov
83%
Dec
86%
Air quality US AQI
Jan
28
Feb
32
Mar
28
Apr
35
May
27
Jun
26
Jul
24
Aug
21
Sep
21
Oct
27
Nov
34
Dec
29
Sun
Jan
0UVI
Feb
1UVI
Mar
2UVI
Apr
3UVI
May
4UVI
Jun
4UVI
Jul
4UVI
Aug
4UVI
Sep
3UVI
Oct
1UVI
Nov
0UVI
Dec
0UVI