A consolidated reference for Glasgow climate: monthly averages, rebuilt from public data on a schedule. Expect 2.9 C at the coldest (Jan) and 13.8 C at the warmest (Jul) — a 10.9 C spread. Expect a wet month and a dry month but no real season: 4.61 mm/day in Oct against 2.52 mm/day in Apr. Taken together that is roughly 1,377 mm of rain a year for the grid cell. The build runs on a schedule and caches the last good response, so the numbers stay put even when the upstream API is having a bad day. Use the table for exact numbers, or the related pages below for neighbouring locations and periods.
Annual mean temperature 7.9 C
Warmest month Jul (13.8 C)
Coldest month Feb (2.9 C)
Wettest month Oct (4.61 mm/day)
All-time record high 26.7 C
All-time record low -8.1 C
Annual precipitation 1,380 mm / year
Coordinates 55.8651, -4.2576
Population 626,410
Average monthly temperature and rainfall in Glasgow
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
2.9
4.42
11.1
-8.1
Feb
2.9
3.62
11.4
-6.4
Mar
4.1
3.04
15.9
-8.0
Apr
6.5
2.52
19.9
-5.3
May
9.4
2.98
23.1
-1.8
Jun
12.3
3.54
26.7
2.6
Jul
13.8
3.92
25.4
5.2
Aug
13.4
4.42
24.8
4.1
Sep
11.5
3.53
22.2
0.5
Oct
8.5
4.61
17.7
-2.2
Nov
5.5
4.45
13.6
-5.3
Dec
3.4
4.24
11.8
-7.5
What the Glasgow climate table shows
Values are multi-decadal climatological averages for the 55.8651, -4.2576 grid cell, not a single year. Rain is the daily mean, so a value of 2.00 mm/day is about 60 mm across a 30-day month. Averages smooth over extremes, so use them for planning rather than for what to pack for next Tuesday.
Frequently asked questions
Why do the numbers differ from a weather app?
An app shows one location on one day. These are long-run averages, so they smooth out single hot or cold spells.
How much rain is 4.61 mm/day in a month?
Rain is recorded as a daily mean, so 4.61 mm/day is roughly 140 mm across a 30-day month.