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. All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus. The highest average 31-day accumulation is 3.2 inches on September 20. The topography within 2 miles of Traverse City contains only modest variations in elevation, with a maximum elevation change of 351 feet and an average elevation above sea level of 614 feet. There are many other things to do at this festival all taking place at different times throughout the duration of the event. Pellston Regional Airport of Emmet County, MERRA-2 Modern-Era Retrospective Analysis. MERRA-2 Modern-Era Retrospective Analysis. The average daily incident shortwave solar energy in Traverse City is rapidly decreasing during September, falling by 1.5 kWh, from 5.3 kWh to 3.8 kWh, over the course of the month. You can jump to a separate table for each region of the state: The Thumb & Southeast Michigan, West & Mid-Michigan, Northern Michigan and Upper Peninsula. That includes the days when precipitation amounts to 0.01 inches (0.25 millimetres) or more. The first graphic shows the average high and low temperatures at the beginning and end of September. Kalamazoo - 92deg/2012. The tables below give monthly averages for rainfall during September at cities, towns and parks in Michigan. 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. 1953 was an El Nino year. Saginaw/Bay City - 93deg/2011 Flint - 97deg/1953 The solar day over the course of September. Weather data is prone to errors, outages, and other defects. The growing season in Traverse City typically lasts for 5.0 months (152 days), from around May 13 to around October 12, rarely starting before April 26 or after May 30, and rarely ending before September 23 or after November 2. m_gallery_type = "photo"; Hot weather appears to be heading into Michigan late next week. of Michigan on September 25th and 26th, which included a tornado near Upson, Wisconsin, and 2-inch (5-cm) hail near Morse, Wisconsin. The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. The sun is lower in the sky everyday, giving us less direct sunlight. 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. The shortest day of the month is September 30, with 11 hours, 43 minutes of daylight and the longest day is September 1, with 13 hours, 16 minutes of daylight. The average accumulated growing degree days in Traverse City are increasing during September, increasing by 329°F, from 1,946°F to 2,275°F, over the course of the month. This is called blossom end rot. Mackinac Island Airport is located near a large body of water (e.g., ocean, sea, or large lake). m_gallery = "sizzling_september_temperature"; The month of September is a month of big weather changes here in Michigan. Lower dew points feel drier and higher dew points feel more humid. The figure below presents a compact representation of key lunar data for September 2020. The area within 2 miles of Traverse City is covered by artificial surfaces (52%) and water (38%), within 10 miles by trees (32%) and water (27%), and within 50 miles by trees (42%) and water (38%). Registration on or use of this site constitutes acceptance of our User Agreement, Privacy Policy and Cookie Statement, and Your California Privacy Rights (each updated 1/1/20). From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. In this report, we use a base of 50°F and a cap of 86°F. Average Weather in September in Detroit Michigan, United States. The shortest day of the month is September 30, with 11 hours, 44 minutes of daylight and the longest day is September 1, with 13 hours, 13 minutes of daylight. Daylight saving time is observed at Mackinac Island Airport during 2020, but it neither starts nor ends during September, so the entire month is in daylight saving time. 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. m_gallery_title = "Sizzling September Temperatures"; This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. You have probably already noticed the earlier sunsets. Lansing - 97deg/1973 The month of September is a month of big weather changes here in Michigan. The 6-10 day and 8-14 day temperature forecasts take us to Sept. 9. The rainfall totals are averages based on weather data collected from 1981 to 2010 for the NOAA National Climatic Data Center. The percentage of time spent at various humidity comfort levels, categorized by dew point. From the start to the end of the month, the length of the day decreases by 1 hour, 32 minutes, implying an average daily decrease of 3 minutes, 11 seconds, and weekly decrease of 22 minutes, 17 seconds. To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day. This is brought on by two factors. The tables below give monthly averages for rainfall during September at cities, towns and parks in Michigan. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages. The shaded overlays indicate night and civil twilight. There is no end in sight to the heat through the first nine days of September. Copyright © 2020 Current Results Publishing Ltd. Average September Temperatures in Michigan, Days of Sunshine in Michigan During September. This is brought on by two factors. Each place has a total for the amount of precipitation it usually receives this month. The average surface water temperature at Mackinac Island Airport is decreasing during September, falling by 7°F, from 64°F to 57°F, over the course of the month. m_gallery_id = "18629875"; Each place has a total for the amount of precipitation it usually receives this month. For reference, on June 20, the longest day of the year, the Sun rises at 5:56 AM and sets 15 hours, 35 minutes later, at 9:31 PM, while on December 21, the shortest day of the year, it rises at 8:17 AM and sets 8 hours, 48 minutes later, at 5:04 PM.

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