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Weather extremes

How extreme does Dumfries's weather get?

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

Based on 50+ years of daily weather observations (1971–present), from the Threave station 27 km away. Updated through March 2026 — 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 Dumfries has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
88°F Jul 18, 2022

That is about 21°F hotter than a normal July afternoon in Dumfries (typical high near 67°F).

The three most extreme on record

1 88°F Jul 18, 2022recent
2 87°F Jul 19, 2006
3 87°F Jun 11, 2023
❄️ Coldest night
7°F Dec 19, 1981

About 27°F colder than a normal December night in Dumfries (typical low near 34°F).

The three most extreme on record

1 7°F Dec 19, 1981
2 7°F Jan 11, 1982
3 7°F Dec 28, 1995
🌧️ Most rain in one day
39.33 in Aug 21, 2008

More rain in a single day than Dumfries usually gets in the whole month of August (typical August total about 6.0 in).

The three most extreme on record

1 39.33 in Aug 21, 2008
2 2.65 in Oct 27, 2021
3 2.64 in Oct 30, 1977

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.

-10°10°30°50°70°90°110° all-time high 88°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Dumfries's record heat sits well above even a hot day for the season — July's 88°F is about 21°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, Dumfries's warmest days reach the high 60s°F and its coldest nights drop to the mid-30s°F. But across the record it has gone as high as 88°F and as low as 7°F. A single day has delivered over 39 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 28 years of daily observations at Dundrennan, a weather station, about 39 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →