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Weather extremes

How extreme does Washington's weather get?

The hottest, coldest, wettest and snowiest days Washington 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 Newcastle station 19 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 Washington has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
99°F Jul 19, 2022

That is about 32°F hotter than a normal July afternoon in Washington (typical high near 66°F).

The three most extreme on record

1 99°F Jul 19, 2022recent
2 91°F Jul 18, 2022
3 88°F Aug 13, 2025
❄️ Coldest night
7°F Dec 29, 1995

About 28°F colder than a normal December night in Washington (typical low near 35°F).

The three most extreme on record

1 7°F Dec 29, 1995
2 12°F Nov 24, 1993
3 12°F Dec 28, 1995

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 99°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Washington's record heat sits well above even a hot day for the season — July's 99°F is about 32°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, Washington's warmest days reach the mid-60s°F and its coldest nights drop to the mid-30s°F. But across the record it has gone as high as 99°F and as low as 7°F. 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 Morpeth: Cockle Park, a weather station, about 37 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →