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Friday, 24 March
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London has a mild maritime atmosphere (Köppen: Cfb ), like all of southern England. In spite of its notoriety for being a blustery city, London gets less precipitation (601 mm, 24 in, in a year) than Rome, Bordeaux, Toulouse, Naples, Sydney and New York.Temperature extremes for all destinations in the London zone territory from 38.1 °C (100.6 °F) at Kew amid August 2003 down to −16.1 °C (3.0 °F) at Northolt amid January 1962.

Summers are for the most part warm and now and then hot. London's normal July high is 24 °C (75.2 °F). By and large London will see 31 days over 25 °C (77.0 °F) every year, and 4.2 days over 30.0 °C (86.0 °F) consistently. Amid the 2003 European warmth wave there were 14 back to back days over 30 °C (86.0 °F) and 2 continuous days where temperatures came to 38 °C (100.4 °F), prompting to many warmth related passings.

Winters are for the most part cool and moist with little temperature variety. Snowfall happens once in a while and can bring about travel interruption when this happens. Snowfall is more normal in external London. Spring and fall are blended seasons and can be charming. As a vast city, London has an extensive urban warmth island impact, making the focal point of London on occasion 5 °C (9 °F) hotter than suburbia and edges. The impact of this can be seen underneath when looking at London Heathrow, 15 miles west of London, with the London Weather Center, in the downtown area.