Fall Weather in Erie Colorado, United States
Daily high temperatures decrease by 36°F, from 84°F to 48°F, rarely falling below 32°F or exceeding 92°F.
Daily low temperatures decrease by 30°F, from 52°F to 23°F, rarely falling below 10°F or exceeding 59°F.
For reference, on July 13, the hottest day of the year, temperatures in Erie typically range from 58°F to 89°F, while on December 30, the coldest day of the year, they range from 18°F to 43°F.
Average High and Low Temperature in the Fall in Erie
The figure below shows you a compact characterization of the hourly average fall temperatures. 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 the Fall in Erie
The fall in Erie experiences increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 30% to 41%. The lowest chance of overcast or mostly cloudy conditions is 26% on September 13.
The clearest day of the fall is September 13, with clear, mostly clear, or partly cloudy conditions 74% of the time.
For reference, on May 5, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 47%, while on September 13, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 74%.
Cloud Cover Categories in the Fall in Erie
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 Erie, the chance of a wet day over the course of the fall is very rapidly decreasing, starting the season at 19% and ending it at 10%.
For reference, the year's highest daily chance of a wet day is 28% on July 22, and its lowest chance is 8% on January 11.
Over the course of the fall in Erie, the chance of a day with only rain decreases from 19% to 3%, the chance of a day with mixed snow and rain increases from 0% to 2%, and the chance of a day with only snow increases from 0% to 5%.
Probability of Precipitation in the Fall in Erie
To show variation within the season and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day.
The average sliding 31-day rainfall during the fall in Erie is decreasing, starting the season at 1.0 inches, when it rarely exceeds 1.9 inches or falls below 0.2 inches, and ending the season at 0.2 inches, when it rarely exceeds 0.4 inches.
Average Monthly Rainfall in the Fall in Erie
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 the fall in Erie is gradually increasing, starting the season at 0.0 inches, when it rarely exceeds 0.0 inches or falls below -0.0 inches, and ending the season at 0.3 inches, when it rarely exceeds 0.6 inches.
Average Monthly Liquid-Equivalent Snowfall in the Fall in Erie
Over the course of the fall in Erie, the length of the day is very rapidly decreasing. From the start to the end of the season, the length of the day decreases by 3 hours, 30 minutes, implying an average daily decrease of 2 minutes, 20 seconds, and weekly decrease of 16 minutes, 19 seconds.
The shortest day of the fall is November 30, with 9 hours, 33 minutes of daylight and the longest day is September 1, with 13 hours, 3 minutes of daylight.
Hours of Daylight and Twilight in the Fall in Erie
The earliest sunrise of the fall in Erie is 6:28 AM on September 1 and the latest sunrise is 1 hour, 7 minutes later at 7:35 AM on November 6.
The latest sunset is 7:31 PM on September 1 and the earliest sunset is 2 hours, 56 minutes earlier at 4:35 PM on November 30.
Daylight saving time (DST) ends at 1:00 AM on November 7, 2021, shifting sunrise and sunset to be an hour earlier.
For reference, on June 21, the longest day of the year, the Sun rises at 5:31 AM and sets 15 hours, 1 minute later, at 8:32 PM, while on December 21, the shortest day of the year, it rises at 7:18 AM and sets 9 hours, 19 minutes later, at 4:38 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in the Fall in Erie
The figure below presents a compact representation of key lunar data for the fall of 2021. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.
Moon Rise, Set & Phases in the Fall in Erie
The chance that a given day will be muggy in Erie is essentially constant during the fall, remaining around 0% throughout.
For reference, on August 5, the muggiest day of the year, there are muggy conditions 0% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in the Fall in Erie
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Erie is increasing during the fall, increasing from 6.8 miles per hour to 8.7 miles per hour over the course of the season.
For reference, on January 17, the windiest day of the year, the daily average wind speed is 10.1 miles per hour, while on August 19, the calmest day of the year, the daily average wind speed is 6.7 miles per hour.
Average Wind Speed in the Fall in Erie
The hourly average wind direction in Erie throughout the fall is predominantly from the west, with a peak proportion of 62% on November 28.
Wind Direction in the Fall in Erie
The growing season in Erie typically lasts for 5.0 months (153 days), from around May 4 to around October 3, rarely starting before April 14 or after May 21, and rarely ending before September 14 or after October 23.
During the fall in Erie, the chance that a given day is within the growing season is very rapidly decreasing falling from 99% to 0% over the course of the season.
Time Spent in Various Temperature Bands and the Growing Season in the Fall in Erie
The average accumulated growing degree days in Erie are rapidly increasing during the fall, increasing by 605°F, from 2,362°F to 2,966°F, over the course of the season.
Growing Degree Days in the Fall in Erie
The average daily incident shortwave solar energy in Erie is very rapidly decreasing during the fall, falling by 3.5 kWh, from 6.1 kWh to 2.6 kWh, over the course of the season.
Average Daily Incident Shortwave Solar Energy in the Fall in Erie
For the purposes of this report, the geographical coordinates of Erie are 40.050 deg latitude, -105.050 deg longitude, and 5,023 ft elevation.
The topography within 2 miles of Erie contains only modest variations in elevation, with a maximum elevation change of 253 feet and an average elevation above sea level of 5,070 feet. Within 10 miles contains only modest variations in elevation (909 feet). Within 50 miles contains very significant variations in elevation (9,829 feet).
The area within 2 miles of Erie is covered by shrubs (57%), grassland (23%), and cropland (17%), within 10 miles by shrubs (35%) and cropland (32%), and within 50 miles by grassland (29%) and trees (27%).
This report illustrates the typical weather in Erie, 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 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Erie.
For each station, the records are corrected for the elevation difference between that station and Erie 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 Erie is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Erie and a given station.
The stations contributing to this reconstruction are: Erie Municipal (KEIK, 75%, 3.7 kilometers, south); Boulder Municipal Airport (KBDU, 12%, 14 kilometers, west); and Vance Brand Airport (KLMO, 12%, 16 kilometers, northwest).
Time zones for airports and weather stations are provided by AskGeo.com .