For the purposes of this report, the geographical coordinates of Thunder Bay are 48.382 deg latitude, -89.250 deg longitude, and 620 ft elevation. Please select the information that is incorrect. Satellite. The chance of wet days in Thunder Bay varies throughout the year. The thin dotted line is the corresponding average liquid-equivalent snowfall. The time of Civil Sunset minus the time of Civil Sunrise. For example, you would want to enter Paris instead of France. We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. Alerts. Check out the weather around the world with our featured, global weather cams Hi/Low, RealFeel®, precip, radar, & everything you need to be ready for the day, commute, and weekend! The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands. Here are our picks to keep you warm as the weather turns cold. Free 30 Day Long Range Weather Forecast for Thunder Bay, Ontario ... Help; CA Thunder Bay, Ontario TUE. 6 to 16 °C-3 to 7 °C. To characterize how pleasant the weather is in Thunder Bay throughout the year, we compute two travel scores. The rainy period of the year lasts for 8.4 months, from March 21 to December 2, with a sliding 31-day rainfall of at least 0.5 inches. The perceived humidity level in Thunder Bay, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, staying within 3% of 3% throughout. Expect occasional rain to continue for the next several hours. The average hourly temperature, color coded into bands. 'It looks like a hurricane': Derecho leaves Cedar Rapids residents displaced 2 months later. The snowless period of the year lasts for 5.8 months, from May 4 to October 28. Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere). The change in length of daylight between today and tomorrow is also listed when available. Make sure that you entered a specific city or a postal code. The transitions to and from daylight saving time are indicated by the 'DST' labels. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end. The estimated value at Thunder Bay is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Thunder Bay and a given station. Forecasters say the brief pause in the record-setting Atlantic hurricane season could quickly come to an end with as many as two named storms possible in the coming days. Lightning. Satellite. The highest chance of a day with snow alone is 10% on January 8. © 2020 AccuWeather, Inc. "AccuWeather" and sun design are registered trademarks of AccuWeather, Inc. All Rights Reserved. The day of the year with the coolest water is March 8, with an average temperature of 34°F. 37 F Thunder Bay International Airport Station | Report. Past 24 hour Conditions Past 24 hour Conditions. The average water temperature experiences significant seasonal variation over the course of the year. THAT'S THE SPOT! The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands. Based on this score, the best time of year to visit Thunder Bay for hot-weather activities is from mid July to mid August, with a peak score in the last week of July. We use cookies on this site to improve your experience as explained in our Cookie Policy. The rainless period of the year lasts for 3.6 months, from December 2 to March 21. Weather Underground provides local & long-range weather forecasts, weatherreports, maps & tropical weather conditions for the Thunder Bay area. The figure below shows you a compact characterization of the entire year of hourly average temperatures. The cloudier part of the year begins around October 12 and lasts for 7.7 months, ending around June 4. 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. The sun does not contribute to the illumination of the sky before this time in the morning, or after this time in the evening. Last updated today at 23:03. Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more. In this report, we use a base of 50°F and a cap of 86°F. The warm season lasts for 3.6 months, from May 27 to September 16, with an average daily high temperature above 63°F. Thunder Bay experiences significant seasonal variation in monthly rainfall. We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader. The brightest day of the year is June 26, with an average of 6.7 kWh. You are about to report this weather station for bad data. The shaded overlays indicate night and civil twilight. In the beginning of morning astronomical twilight and at the end of astronomical twilight in the evening, sky illumination is very faint, and might be undetectable. In Thunder Bay, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year. Source: Environment Canada. Thunder Bay Airport. This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. Based on growing degree days alone, the first spring blooms in Thunder Bay should appear around May 23, only rarely appearing before May 12 or after June 4. Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory. The chance of a wet day peaks at 32% on June 12. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed. Based on this categorization, the most common form of precipitation in Thunder Bay changes throughout the year. The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. Lower dew points feel drier and higher dew points feel more humid. Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies. The average liquid-equivalent snowfall (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. We will review the data in question. View the latest weather forecasts, maps, news and alerts on Yahoo Weather.

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