Average Weather in Avon Colorado, United States
In Avon, the summers are comfortable and dry, the winters are freezing and snowy, and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 7°F to 77°F and is rarely below -7°F or above 83°F.
Based on the tourism score, the best time of year to visit Avon for warm-weather activities is from late June to mid August.
The warm season lasts for 3.5 months, from June 2 to September 17, with an average daily high temperature above 67°F. The hottest day of the year is July 8, with an average high of 77°F and low of 45°F.
The cold season lasts for 3.2 months, from November 22 to February 28, with an average daily high temperature below 37°F. The coldest day of the year is January 7, with an average low of 7°F and high of 28°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, 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 Avon, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.
The clearer part of the year in Avon begins around June 1 and lasts for 5.0 months, ending around November 3. On September 13, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 76% of the time, and overcast or mostly cloudy 24% of the time.
The cloudier part of the year begins around November 3 and lasts for 7.0 months, ending around June 1. On February 12, the cloudiest day of the year, the sky is overcast or mostly cloudy 48% of the time, and clear, mostly clear, or partly cloudy 52% of the time.
Cloud Cover Categories
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. The chance of wet days in Avon varies throughout the year.
The wetter season lasts 5.7 months, from April 2 to September 24, with a greater than 23% chance of a given day being a wet day. The chance of a wet day peaks at 31% on July 23.
The drier season lasts 6.3 months, from September 24 to April 2. The smallest chance of a wet day is 15% on January 28.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation in Avon changes throughout the year.
Rain alone is the most common for 6.5 months, from April 16 to November 1. The highest chance of a day with rain alone is 31% on July 23.
Snow alone is the most common for 4.7 months, from November 1 to March 25. The highest chance of a day with snow alone is 16% on December 29.
Mixed snow and rain is the most common for 3.1 weeks, from March 25 to April 16. The highest chance of a day with mixed snow and rain is 11% on April 11.
Daily Chance of Precipitation
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Avon experiences some seasonal variation in monthly rainfall.
The rainy period of the year lasts for 7.2 months, from March 31 to November 5, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around July 28, with an average total accumulation of 1.2 inches.
The rainless period of the year lasts for 4.8 months, from November 5 to March 31. The least rain falls around January 16, with an average total accumulation of 0.1 inches.
Average Monthly Rainfall
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. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end.
As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Avon experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 7.7 months, from September 30 to May 21, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around December 23, with an average total liquid-equivalent accumulation of 0.8 inches.
The snowless period of the year lasts for 4.3 months, from May 21 to September 30. The least snow falls around July 29, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Avon varies significantly over the course of the year. In 2018, the shortest day is December 21, with 9 hours, 22 minutes of daylight; the longest day is June 21, with 14 hours, 59 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:37 AM on June 14, and the latest sunrise is 1 hour, 59 minutes later at 7:36 AM on November 3. The earliest sunset is at 4:41 PM on December 6, and the latest sunset is 3 hours, 56 minutes later at 8:37 PM on June 27.
Daylight saving time (DST) is observed in Avon during 2018, starting in the spring on March 11, lasting 7.8 months, and ending in the fall on November 4.
Sunrise & Sunset with Twilight and Daylight Saving Time
The perceived humidity level in Avon, 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, remaining a virtually constant 0% throughout.
Humidity Comfort Levels
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Avon experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 8.1 months, from October 13 to June 17, with average wind speeds of more than 4.8 miles per hour. The windiest day of the year is April 4, with an average hourly wind speed of 5.9 miles per hour.
The calmer time of year lasts for 3.9 months, from June 17 to October 13. The calmest day of the year is August 1, with an average hourly wind speed of 3.7 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Avon is from the west throughout the year.
Best Time of Year to Visit
To characterize how pleasant the weather is in Avon throughout the year, we compute two travel scores.
The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Avon for general outdoor tourist activities is from late June to mid August, with a peak score in the second week of July.
The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Avon for hot-weather activities is from late June to late July, with a peak score in the second week of July.
For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. 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.
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.
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.
Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.
Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.
The growing season in Avon typically lasts for 3.1 months (97 days), from around June 9 to around September 14, rarely starting before May 21 or after June 30, and rarely ending before August 29 or after September 30.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Avon should appear around May 20, only rarely appearing before May 8 or after June 1.
Growing Degree Days
The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.
The brighter period of the year lasts for 2.5 months, from May 12 to July 28, with an average daily incident shortwave energy per square meter above 7.1 kWh. The brightest day of the year is June 17, with an average of 8.3 kWh.
The darker period of the year lasts for 3.2 months, from November 2 to February 10, with an average daily incident shortwave energy per square meter below 3.7 kWh. The darkest day of the year is December 22, with an average of 2.5 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Avon are 39.631 deg latitude, -106.522 deg longitude, and 8,350 ft elevation.
The topography within 2 miles of Avon contains large variations in elevation, with a maximum elevation change of 1,985 feet and an average elevation above sea level of 8,061 feet. Within 10 miles contains large variations in elevation (6,381 feet). Within 50 miles also contains extreme variations in elevation (8,753 feet).
The area within 2 miles of Avon is covered by shrubs (63%) and trees (37%), within 10 miles by trees (78%) and shrubs (17%), and within 50 miles by trees (56%) and shrubs (22%).
This report illustrates the typical weather in Avon, 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 Avon.
For each station, the records are corrected for the elevation difference between that station and Avon 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 Avon is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Avon and a given station.
The stations contributing to this reconstruction are: Eagle County Regional Airport (26%, 34 kilometers, west); Copper Mountain, Red Cliff Pass (11%, 37 kilometers, southeast); Kremmling, Mc Elroy Airfield (32%, 49 kilometers, north); and Aspen–Pitkin County Airport (32%, 54 kilometers, southwest).
Time zones for aiports and weather stations are provided by AskGeo.com .