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Weather extremes

How extreme does Plymouth's weather get?

The hottest, coldest, wettest and snowiest days Plymouth 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 Plymouth: Mountbatten station 3 km away. Updated through April 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 Plymouth has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
93°F Jul 17, 2022

That is about 25°F hotter than a normal July afternoon in Plymouth (typical high near 68°F).

The three most extreme on record

1 93°F Jul 17, 2022recent
2 91°F Aug 11, 2022
3 90°F Aug 10, 2022
❄️ Coldest night
16°F Jan 2, 1979

About 23°F colder than a normal January night in Plymouth (typical low near 39°F).

The three most extreme on record

1 16°F Jan 2, 1979
2 17°F Jan 3, 1979
3 17°F Jan 13, 1987
🌧️ Most rain in one day
2.28 in Mar 21, 2013

About 75% of a typical March's rain in a single day (Plymouth averages roughly 3.1 in across the month).

The three most extreme on record

1 2.28 in Mar 21, 2013
2 2.25 in Aug 28, 2025
3 2.10 in Nov 24, 2012

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 93°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Plymouth's record heat sits well above even a hot day for the season — July's 93°F is about 25°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, Plymouth's warmest days reach the high 60s°F and its coldest nights drop to the high 30s°F. But across the record it has gone as high as 93°F and as low as 16°F. A single day has delivered over 2 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 29 years of daily observations at Plymouth: Mountbatten, a weather station, about 3 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →