Average Weather in September in Saint Cloud Minnesota, United States
Daily high temperatures decrease by 12°F, from 76°F to 64°F, rarely falling below 51°F or exceeding 85°F.
Daily low temperatures decrease by 11°F, from 55°F to 44°F, rarely falling below 31°F or exceeding 65°F.
For reference, on July 18, the hottest day of the year, temperatures in Saint Cloud typically range from 61°F to 82°F, while on January 21, the coldest day of the year, they range from 5°F to 22°F.
Average High and Low Temperature in September
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on September. 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.
Average Hourly Temperature in September
The month of September in Saint Cloud experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 32% to 39%.
The clearest day of the month is September 1, with clear, mostly clear, or partly cloudy conditions 68% of the time.
For reference, on February 6, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 61%, while on August 1, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 72%.
Cloud Cover Categories in September
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Saint Cloud, the chance of a wet day over the course of September is very rapidly decreasing, starting the month at 32% and ending it at 24%.
For reference, the year's highest daily chance of a wet day is 41% on June 20, and its lowest chance is 7% on January 28.
Probability of Precipitation in September
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.
The average sliding 31-day rainfall during September in Saint Cloud is decreasing, starting the month at 3.1 inches, when it rarely exceeds 5.4 inches or falls below 0.9 inches, and ending the month at 2.4 inches, when it rarely exceeds 4.5 inches or falls below 0.6 inches.
Average Monthly Rainfall in September
Over the course of September in Saint Cloud, the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1 hour, 31 minutes, implying an average daily decrease of 3 minutes, 9 seconds, and weekly decrease of 22 minutes, 2 seconds.
The shortest day of the month is September 30, with 11 hours, 45 minutes of daylight and the longest day is September 1, with 13 hours, 16 minutes of daylight.
Hours of Daylight and Twilight in September
The earliest sunrise of the month in Saint Cloud is 6:38 AM on September 1 and the latest sunrise is 36 minutes later at 7:13 AM on September 30.
The latest sunset is 7:54 PM on September 1 and the earliest sunset is 56 minutes earlier at 6:58 PM on September 30.
Daylight saving time is observed in Saint Cloud during 2018, but it neither starts nor ends during September, so the entire month is in daylight saving time.
For reference, on June 21, the longest day of the year, the Sun rises at 5:27 AM and sets 15 hours, 42 minutes later, at 9:09 PM, while on December 21, the shortest day of the year, it rises at 7:53 AM and sets 8 hours, 42 minutes later, at 4:35 PM.
Sunrise & Sunset with Twilight in September
The chance that a given day will be muggy in Saint Cloud is rapidly decreasing during September, falling from 15% to 1% over the course of the month.
For reference, on July 20, the muggiest day of the year, there are muggy conditions 27% of the time, while on November 15, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in September
The average hourly wind speed in Saint Cloud is increasing during September, increasing from 9.8 miles per hour to 11.1 miles per hour over the course of the month.
For reference, on April 2, the windiest day of the year, the daily average wind speed is 12.5 miles per hour, while on August 1, the calmest day of the year, the daily average wind speed is 8.7 miles per hour.
Average Wind Speed in September
Wind Direction in September
The growing season in Saint Cloud typically lasts for 4.8 months (147 days), from around May 5 to around September 29, rarely starting before April 15 or after May 24, and rarely ending before September 13 or after October 17.
During September in Saint Cloud, the chance that a given day is within the growing season is very rapidly decreasing falling from 100% to 48% over the course of the month.
Time Spent in Various Temperature Bands and the Growing Season in September
The average accumulated growing degree days in Saint Cloud are increasing during September, increasing by 306°F, from 2,048°F to 2,354°F, over the course of the month.
Growing Degree Days in September
The average daily incident shortwave solar energy in Saint Cloud is decreasing during September, falling by 1.5 kWh, from 5.4 kWh to 3.9 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in September
For the purposes of this report, the geographical coordinates of Saint Cloud are 45.561 deg latitude, -94.162 deg longitude, and 1,037 ft elevation.
The topography within 2 miles of Saint Cloud contains only modest variations in elevation, with a maximum elevation change of 180 feet and an average elevation above sea level of 1,030 feet. Within 10 miles also contains only modest variations in elevation (299 feet). Within 50 miles contains only modest variations in elevation (696 feet).
The area within 2 miles of Saint Cloud is covered by artificial surfaces (81%), within 10 miles by cropland (74%) and trees (12%), and within 50 miles by cropland (70%) and trees (21%).
This report illustrates the typical weather in Saint Cloud year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There are 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Saint Cloud.
For each station, the records are corrected for the elevation difference between that station and Saint Cloud according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Saint Cloud is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Saint Cloud and a given station.
The stations contributing to this reconstruction are: St. Cloud Regional Airport (81%, 9 kilometers, east); Little Falls, Little Falls/Morrison County Airport-Lindbergh Field (7%, 46 kilometers, north); Paynesville Municipal Airport (6%, 50 kilometers, southwest); and Litchfield Municipal Airport (6%, 53 kilometers, southwest).
Time zones for aiports and weather stations are provided by AskGeo.com .