About government. London, situated in Southern (Southwestern) Ontario, has the most lightning strikes per year in Canada, averaging 34 days of thunderstorm activity per year. In London it rains the most in October (61.1 mm) and the least in July (34.6 mm). 14 F London International Airport Station | Report. With a moderate sea climate, it often rains in the UK. Precipitation is generally less than 70 cm (28 in) and peaks in the summer months in the form of showers or thunderstorms. However, London seems to be a bit of an exception since it only rains annually 557.4 mm compared to the country’s average of 1154 mm. historical climate data web site is a gateway to information on matters such as past (hourly, daily, monthly and almanac) weather includes: temperature, snow, snow on ground, precipitation, rain, wind speed and direction, heating and cooling degree days, visibility, relative humidity, wind chill and humidex in Canada. As you can see in the climate graph at the top, the average temperature ranges between about -10°C to 20°C. Severe thunderstorms peak in summer. London, Ontario, Canada Weather History star_ratehome. The average high and low temperatures are listed below monthly and annually for … What is the average annual rainfall in London? LONDON CS ONTARIO Current Station Operator: ECCC - MSC. ... † = Data that is not subject to review by the National Climate Archives; Feedback about this web site. ... Day Average Temp: 21.26: 19-Precipitation (Inches) … For the detailed weather of London or Toronto.. High & Low Weather Summary for the Past Weeks . Toronto and London Weather Comparison. London, Ontario Temperatures: Averages by Month The numbers here tell you how hot and cold the weather usually is in London, Ontario during each month of the year. The following weather charts compare London’s weather against Toronto's weather. This rainfall is typically spread over 11 days, although this may vary considerably. The first weather graph displays the day time maximum average temperature, the second shows the average amount of rain per month while the third graph indicates the minimum temperature at … On the flip side this corresponds to an average of 8.2 hours of sunshine per day. Maximum temperature yesterday: 28 °F (at 1:00 pm) Minimum temperature yesterday: 21 °F (at 3:00 am) Average temperature yesterday: 24 °F. Weather.com brings you the most accurate monthly weather forecast for London, Ontario with average/record and high/low temperatures, precipitation and more. The wettest month is December with an average of 100mm of rain. The average sliding 31-day rainfall during April in London is gradually increasing, starting the month at 1.3 inches, when it rarely exceeds 2.3 inches or falls below 0.5 inches, and ending the month at 1.7 inches, when it rarely exceeds 3.0 inches or falls below 0.7 inches. London has a maritime climate, which means that the summer times … Date modified: 2020-12-10. The length of the growing season is around early April to early October. On average August is the 2nd wettest month of the year in London with around 94mm 3.7 inches of rain making it a a little damp time to visit. London Temperature Yesterday. July is the hottest month in London with an average temperature of 20.5°C (69°F) and the coldest is January at -6°C (21°F) with the most daily sunshine hours at 11 in July. While London may have a reputation for its dreary, rainy weather, its annual precipitation totals pale in comparison to the rainiest cities in the United States.Even New York City, with an average of 49.9 inches of rain per year, and both Rochester and Buffalo, New York, with 167 days of rain each year (or just 198 dry days), are rainier than London. ... Summary, average and extreme values are based on the data above. 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