Averages maps. Averages are for London Weather Station, which is 6 miles from London. London, City of London, Greater London, United Kingdom - Monthly weather averages including average high and low Temperature, Precipitation, Pressure, Wind Charts to assist you in planning your travel, holiday or an outdoor activity at London, United Kingdom However, freezing temperatures are not uncommon and snow is not unheard of. Perfect Christmas: snow on the ground of 2 cm or more on Christmas morning and snow in the air sometime Christmas day, i.e., a measurable snowfall on Christmas based on period 1955-2007; Snow depth now: average depth of snow on the ground (cm) on Christmas morning from 1994 to 2017 Get the forecast for today, tonight & tomorrow's weather for London, London, United Kingdom. This was associated with an eastward moving depression that forced the â¦ (Departure from Normal is based on the long term average from 1882-2020) Long Term Average Seasonal Snowfall: 56.5" (1882-2020) 30 Year Average Seasonal Snowfall: 55.3" (1981-2010) Maximum Seasonal Snowfall: 118.7" (1908-1909) Minimum Seasonal Snowfall: 21.3" (1888-1889) Hi/Low, RealFeel®, precip, radar, & everything you need to be ready for the day, commute, and weekend! Find the best time to go to London (Buckinghamshire).