Average Weather in September in Shellbrook Canada
Daily high temperatures decrease by 12°F, from 70°F to 57°F, rarely falling below 43°F or exceeding 81°F.
Daily low temperatures decrease by 10°F, from 47°F to 37°F, rarely falling below 28°F or exceeding 56°F.
For reference, on July 24, the hottest day of the year, temperatures in Shellbrook typically range from 54°F to 76°F, while on January 11, the coldest day of the year, they range from -5°F to 11°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 Shellbrook experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 42% to 48%.
The clearest day of the month is September 2, with clear, mostly clear, or partly cloudy conditions 58% of the time.
For reference, on February 21, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 72%, while on July 30, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 65%.
Cloud Cover Categories in September
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Shellbrook, the chance of a wet day over the course of September is rapidly decreasing, starting the month at 20% and ending it at 14%.
For reference, the year's highest daily chance of a wet day is 31% on June 30, and its lowest chance is 7% on February 17.
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 Shellbrook is decreasing, starting the month at 1.6 inches, when it rarely exceeds 3.4 inches or falls below 0.4 inches, and ending the month at 1.0 inches, when it rarely exceeds 2.1 inches or falls below 0.1 inches.
Average Monthly Rainfall in September
We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. As with rainfall, we consider the liquid-equivalent snowfall accumulated over a sliding 31-day period centered around each day.
The average sliding 31-day liquid-equivalent snowfall during September in Shellbrook is essentially constant, remaining about 0.1 inches throughout, and rarely exceeding 0.4 inches or falling to 0.0 inches.
Average Monthly Liquid-Equivalent Snowfall in September
Over the course of September in Shellbrook, the length of the day is very rapidly decreasing. From the start to the end of the month, the length of the day decreases by 2 hours, 0 minutes, implying an average daily decrease of 4 minutes, 8 seconds, and weekly decrease of 28 minutes, 59 seconds.
The shortest day of the month is September 30, with 11 hours, 40 minutes of daylight and the longest day is September 1, with 13 hours, 40 minutes of daylight.
Hours of Daylight and Twilight in September
The earliest sunrise of the month in Shellbrook is 6:15 AM on September 1 and the latest sunrise is 50 minutes later at 7:05 AM on September 30.
The latest sunset is 7:54 PM on September 1 and the earliest sunset is 1 hour, 10 minutes earlier at 6:44 PM on September 30.
Daylight saving time is not observed in Shellbrook during 2019.
For reference, on June 21, the longest day of the year, the Sun rises at 4:38 AM and sets 16 hours, 59 minutes later, at 9:36 PM, while on December 22, the shortest day of the year, it rises at 9:18 AM and sets 7 hours, 31 minutes later, at 4:49 PM.
Sunrise & Sunset with Twilight in September
The chance that a given day will be muggy in Shellbrook is essentially constant during September, remaining around 0% throughout.
For reference, on July 21, the muggiest day of the year, there are muggy conditions 2% of the time, while on September 7, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in September
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Shellbrook is essentially constant during September, remaining within 0.3 miles per hour of 8.6 miles per hour throughout.
For reference, on April 3, the windiest day of the year, the daily average wind speed is 9.6 miles per hour, while on August 4, the calmest day of the year, the daily average wind speed is 7.7 miles per hour.
The highest daily average wind speed during September is 8.9 miles per hour on September 27.
Average Wind Speed in September
The hourly average wind direction in Shellbrook throughout September is predominantly from the west, with a peak proportion of 37% on September 2.
Wind Direction in September
The growing season in Shellbrook typically lasts for 4.0 months (123 days), from around May 19 to around September 19, rarely starting before May 2 or after June 5, and rarely ending before August 29 or after October 7.
During September in Shellbrook, the chance that a given day is within the growing season is very rapidly decreasing falling from 87% to 22% 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 Shellbrook are gradually increasing during September, increasing by 158°F, from 1,340°F to 1,498°F, over the course of the month.
Growing Degree Days in September
The average daily incident shortwave solar energy in Shellbrook is rapidly decreasing during September, falling by 1.6 kWh, from 4.8 kWh to 3.2 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 Shellbrook are 53.217 deg latitude, -106.401 deg longitude, and 1,627 ft elevation.
The topography within 2 miles of Shellbrook is essentially flat, with a maximum elevation change of 79 feet and an average elevation above sea level of 1,618 feet. Within 10 miles is essentially flat (344 feet). Within 50 miles contains only modest variations in elevation (1,407 feet).
The area within 2 miles of Shellbrook is covered by cropland (93%), within 10 miles by cropland (76%) and trees (18%), and within 50 miles by cropland (67%) and trees (28%).
This report illustrates the typical weather in Shellbrook 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 Shellbrook.
For each station, the records are corrected for the elevation difference between that station and Shellbrook 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 Shellbrook is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Shellbrook and a given station.
The stations contributing to this reconstruction are: Prince Albert (Glass Field) Airport (45%, 49 kilometers, east); Spiritwood West, Sask (22%, 78 kilometers, west); Waskesiu Lake Automated Reporting Station (21%, 81 kilometers, north); and Saskatoon John G. Diefenbaker International Airport (12%, 119 kilometers, south).
Time zones for aiports and weather stations are provided by AskGeo.com .