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Weather extremes

How extreme does Glasgow's weather get?

The hottest, coldest, wettest and snowiest days Glasgow has recorded — the outer limits of what its weather can do, and how far they sit beyond a normal day.

Based on 34 years of daily weather observations (1991–present), from the Wokal Field/Glasgow Intl Airport station 2 km away. Updated through August 2025 — an all-time extreme only changes when a more extreme day actually occurs, so some dates are old. That is normal, not stale data.

The four kinds of extreme

The hottest, coldest, wettest and snowiest single days Glasgow has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
110°F Jul 19, 2021

That is about 22°F hotter than a normal July afternoon in Glasgow (typical high near 88°F).

The three most extreme on record

1 110°F Jul 19, 2021recent
2 110°F Jul 20, 2021
3 109°F Jul 24, 2024
❄️ Coldest night
-40°F Jan 31, 1996

About 44°F colder than a normal January night in Glasgow (typical low near 4°F).

The three most extreme on record

1 -40°F Jan 31, 1996
2 -39°F Jan 30, 1996
3 -38°F Feb 3, 1996
🌧️ Most rain in one day
3.13 in Aug 24, 2014

More rain in a single day than Glasgow usually gets in the whole month of August (typical August total about 1.4 in).

The three most extreme on record

1 3.13 in Aug 24, 2014
2 2.85 in Jun 17, 2007
3 2.27 in Aug 22, 1993

How hot and cold it gets, month by month

The shaded band is the normal range of daily temperatures for each month. The dots show the most extreme it has ever been — so you can see how far beyond a normal day the records really sit.

-50°-30°-10°10°30°50°70°90°110°130° all-time high 110°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Glasgow's record heat sits well above even a hot day for the season — July's 110°F is about 22°F beyond a normal hot afternoon. Its record cold is just as far below a normal winter night — the dots mark how rare each extreme really is.

In plain terms

In a normal year, Glasgow's warmest days reach the high 80s°F and its coldest nights drop to the mid-0s°F. But across the record it has gone as high as 110°F and as low as −40°F. A single day has delivered over 3 inches of rain. Those are the outer edges worth knowing if you are moving here, planning a trip, or thinking about a house.
Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Wokal Field/glasgow Intl Airport, a weather station, about 2 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →