The percentage of time spent in various temperature bands. In London it rains most often in January (on average 11.4 days) and least often in July (on average 6.3 days). The shortest day of the month is January 1, with 9 hours, 5 minutes of daylight and the longest day is January 31, with 9 hours, 56 minutes of daylight. Read an overview of the climate. This report illustrates the typical weather in London, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. On a couple of the warmer days, high temperatures will reach 12-13 C (mid-50’s F). Place. Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. Lower dew points feel drier and higher dew points feel more humid. The thin dotted line is the corresponding average liquid-equivalent snowfall. This average is quite a bit lower than the country’s average of 156.2 days a year. The shaded overlays indicate night and civil twilight. Copyright © 2021 Current Results Publishing Ltd. Precipitation Averages for Ontario in January. You can jump to a separate table for each section of the province: Eastern, Central, Southwestern, Northeastern and Northwestern Ontario. London typically has 57 frosty days a year. Average values and totals based on weather data of recent years: Average daily temperatures in January. We assume no responsibility for any decisions made on the basis of the content presented on this site. The area within 2 miles of London is covered by artificial surfaces (85%), within 10 miles by cropland (56%) and grassland (19%), and within 50 miles by cropland (52%) and water (22%). The estimated value at London is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between London and a given station. As with rainfall, we consider the liquid-equivalent snowfall accumulated over a sliding 31-day period centered around each day. Low °F. London in the Middle of January The average growing degree days accumulated over the course of January, with 25th to 75th and 10th to 90th percentile bands. Daily high temperatures decrease by 3°F, from 31°F to 28°F, rarely falling below 15°F or exceeding 44°F. The earliest sunset is 5:01 PM on January 1 and the latest sunset is 35 minutes later at 5:36 PM on January 31. Weather in London in January 2020. Snow is pretty rare in London but if it does fall it's typically in January or February. The hottest month of the year is normally July when the peak temperature can be 90 F (30 C) but the average temperature in July is about 70 F (22 C). This rainfall is typically spread over 15 days, although this may vary considerably. The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than. Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations. The number of hours during which the Sun is visible (black line). The average maximum temperature lies around -5.0°C (23°F). Snow in London itself is very very unusual - but does occaisionally happen.. On the flip side this corresponds to an average of 3.2 hours of sunshine per day. The percentage of time spent at various humidity comfort levels, categorized by dew point. The highest average 31-day liquid-equivalent accumulation is 0.5 inches on January 10. From November to April, it can remain below freezing all day long. The average surface water temperature in London is decreasing during January, falling by 4°F, from 38°F to 34°F, over the course of the month. The average temperatures in July range from 23°C (74°F) in southwestern Ontario, to 19°C (64°F) in eastern Ontario. Temperature. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day. The latest sunrise of the month in London is 7:56 AM on January 3 and the earliest sunrise is 16 minutes earlier at 7:40 AM on January 31. Check temperature, rainfall & sunshine averages & more in January 2021 in Toronto, Ontario At night the average minimum temperature drops down to around -10°C, that's 15°F. Based on weather reports collected during 1985–2015. Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database . The lowest average 31-day accumulation is 0.5 inches on January 28. Includes Daily Risk of Precipitation, High/Low/Average Temperatures, Heating/Cooling Degree Days and Growing Degree Days Canada London, Ontario Long Range Weather Forecast Helping You Avoid Bad Weather. The average temperature in January 1963 was −2.1°C, making the winter of 2009-10 seem positively balmy. All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . The chance that a given day will be muggy in London is essentially constant during January, remaining around 0% throughout. Home | Privacy & Cookies | Contact | About. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands. The clearest day of the month is January 1, with clear, mostly clear, or partly cloudy conditions 32% of the time. The lowest daily average low temperature is 16°F on January 29. Daily high temperatures decrease by 3°F, from 31°F to 28°F, rarely falling below 15°F or exceeding 44°F. Thus, the actual daytime temperature in a given month will be 2 to 10 °C (4 to 18 °F) higher than the temperature listed here, depending on … The figure below presents a compact representation of key lunar data for January 2021. With an average of 20.2 °C | 68.4 °F, July is the warmest month. The solar day over the course of January. The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. Weather phenomena recorded in previous years in London ☃ Water Temperature in localities in London ☀ Weather forecast for London in January ☔. This month is known as a chilly month. Average low: 41 degrees Fahrenheit (5 degrees Celsius) Temperatures in London typically only drop near freezing in the evenings, and the city typically experiences 11 days of rainfall in January and only eight hours of daylight throughout the month. The shaded overlays indicate night and civil twilight. From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night. Donetsk, Ukraine (5,144 miles away); Erciş, Turkey (5,802 miles); and Nizhniy Kurkuzhin, Russia (5,542 miles) are the far-away foreign places with temperatures most similar to London (view comparison). MERRA-2 Modern-Era Retrospective Analysis. For reference, on August 1 , the hottest day of the year, temperatures in London typically range from 60°F to 74°F , while on February 7 , the coldest day of the year, they range from 39°F to 47°F . The month of January in London is reliably fully outside of the growing season. Meteorological Service of Canada. Showing: All Year January February March April May June July August September October November December. Weather climate statistics include monthly averages, maximum and minimum average mean temperatures, mean rainfall, mean snowfall & daily high and low extremes for temperature. Average temperatures for January at cities, towns and parks throughout Ontario are given below. In London it rains on average 109.4 days a year. Minimum day temperatures can go down to 0°C (32°F) but overnight temperatures can go down to -5°C (23°F) having said that our weather forcasters are telling us this will be the coldest winter for 40 years so you may need to lower those temperatures by a few degrees Shortwave radiation includes visible light and ultraviolet radiation. The highest daily average wind speed during January is 14.3 miles per hour on January 13. London average temperature. The climate profile is taken from closest available data source to London. The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on January. The average sliding 31-day liquid-equivalent snowfall during January in London is essentially constant, remaining about 0.4 inches throughout, and rarely exceeding 1.0 inches or falling to 0.0 inches. For reference, on January 12, the windiest day of the year, the daily average wind speed is 14.3 miles per hour, while on August 4, the calmest day of the year, the daily average wind speed is 8.7 miles per hour. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The city averages just four nights a year, usually in January and February, when the thermometer drops that low. Average Weather in January in London Canada. How Cold Is London In January? Based on average water temperature observations over the past ten years, the warmest water temperature in Lake Ontario in January was 4.3°C/39.7°F, and the coldest 1.4°C/34.5°F You can choose the units of measurement for displaying data - in Celsius or Fahrenheit Current water temperature in … Canadian Climate Normals. 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