How extreme does City of Westminster's weather get?

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

Based on 16 years of daily weather observations (2009–present), from the St James Park station 1 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 City of Westminster has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day

104°F Jul 19, 2022

The three most extreme on record

1 104°F Jul 19, 2022recent

2 99°F Jul 18, 2022

3 97°F Jul 25, 2019

❄️ Coldest night

23°F Dec 20, 2010

The three most extreme on record

1 23°F Dec 20, 2010

2 24°F Feb 28, 2018

3 24°F Dec 15, 2022

🌧️ Most rain in one day

1.88 in Oct 3, 2020

The three most extreme on record

1 1.88 in Oct 3, 2020

2 1.69 in Sep 25, 2019

3 1.68 in Jun 23, 2016

In plain terms

Across the record, City of Westminster has reached as high as 104°F and as low as 22°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 30 years of daily observations at Northolt, a weather station, about 20 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →

← City of Westminster city detail