Average Weather at Cortez-Montezuma County Airport Colorado, United States
At Cortez-Montezuma County Airport, the summers are hot and mostly clear, the winters are freezing and partly cloudy, and it is dry year round. Over the course of the year, the temperature typically varies from 15°F to 88°F and is rarely below 1°F or above 95°F.
Based on the tourism score, the best time of year to visit Cortez-Montezuma County Airport for warm-weather activities is from late June to late August.
The hot season lasts for 3.5 months, from May 30 to September 14, with an average daily high temperature above 79°F. The hottest day of the year is July 8, with an average high of 88°F and low of 54°F.
The cold season lasts for 3.1 months, from November 21 to February 24, with an average daily high temperature below 49°F. The coldest day of the year is January 7, with an average low of 15°F and high of 39°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
Nevşehir, Turkey (6,703 miles away); Bījār, Iran (7,165 miles); and Farrokh Shahr, Iran (7,461 miles) are the far-away foreign places with temperatures most similar to Cortez-Montezuma County Airport (view comparison).
At Cortez-Montezuma County Airport, 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 at Cortez-Montezuma County Airport begins around August 14 and lasts for 2.6 months, ending around November 3. On September 19, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 79% of the time, and overcast or mostly cloudy 21% of the time.
The cloudier part of the year begins around November 3 and lasts for 9.4 months, ending around August 14. On March 1, the cloudiest day of the year, the sky is overcast or mostly cloudy 44% of the time, and clear, mostly clear, or partly cloudy 56% of the time.
Cloud Cover Categories
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Cortez-Montezuma County Airport varies throughout the year.
The wetter season lasts 8.2 months, from July 9 to March 16, with a greater than 14% chance of a given day being a wet day. The chance of a wet day peaks at 24% on August 5.
The drier season lasts 3.8 months, from March 16 to July 9. The smallest chance of a wet day is 5% on June 10.
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 at Cortez-Montezuma County Airport changes throughout the year.
Rain alone is the most common for 11 months, from January 28 to December 14. The highest chance of a day with rain alone is 24% on August 5.
Mixed snow and rain is the most common for 1.5 months, from December 14 to January 28. The highest chance of a day with mixed snow and rain is 6% on January 5.
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. Cortez-Montezuma County Airport experiences some seasonal variation in monthly rainfall.
The rainy period of the year lasts for 11 months, from June 28 to May 27, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around September 13, with an average total accumulation of 1.3 inches.
The rainless period of the year lasts for 1.0 months, from May 27 to June 28. The least rain falls around June 15, with an average total accumulation of 0.4 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. Cortez-Montezuma County Airport experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 4.7 months, from November 7 to March 29, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around January 6, with an average total liquid-equivalent accumulation of 0.3 inches.
The snowless period of the year lasts for 7.3 months, from March 29 to November 7. The least snow falls around July 31, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day at Cortez-Montezuma County Airport varies significantly over the course of the year. In 2017, the shortest day is December 21, with 9 hours, 35 minutes of daylight; the longest day is June 20, with 14 hours, 44 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:53 AM on June 13, and the latest sunrise is 1 hour, 49 minutes later at 7:42 AM on November 4. The earliest sunset is at 4:56 PM on December 6, and the latest sunset is 3 hours, 42 minutes later at 8:39 PM on June 28.
Daylight saving time (DST) is observed at Cortez-Montezuma County Airport during 2017, starting in the spring on March 12, lasting 7.8 months, and ending in the fall on November 5.
Sunrise & Sunset with Twilight and Daylight Saving Time
The perceived humidity level at Cortez-Montezuma County Airport, 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
The average hourly wind speed at Cortez-Montezuma County Airport experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 4.5 months, from February 10 to June 24, with average wind speeds of more than 6.9 miles per hour. The windiest day of the year is April 11, with an average hourly wind speed of 8.4 miles per hour.
The calmer time of year lasts for 7.5 months, from June 24 to February 10. The calmest day of the year is August 13, with an average hourly wind speed of 5.5 miles per hour.
Average Wind Speed
The predominant average hourly wind direction at Cortez-Montezuma County Airport varies throughout the year.
The wind is most often from the west for 7.4 months, from March 9 to October 20, with a peak percentage of 43% on June 13. The wind is most often from the north for 4.6 months, from October 20 to March 9, with a peak percentage of 35% on January 1.
Best Time of Year to Visit
To characterize how pleasant the weather is at Cortez-Montezuma County Airport 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 Cortez-Montezuma County Airport for general outdoor tourist activities is from late June to late August, with a peak score in the last 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 Cortez-Montezuma County Airport for hot-weather activities is from mid June to early August, with a peak score in the first 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 at Cortez-Montezuma County Airport typically lasts for 4.4 months (134 days), from around May 21 to around October 2, rarely starting before April 28 or after June 14, and rarely ending before September 14 or after October 20.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms at Cortez-Montezuma County Airport should appear around April 8, only rarely appearing before March 26 or after April 23.
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 3 to July 20, with an average daily incident shortwave energy per square meter above 7.4 kWh. The brightest day of the year is June 12, with an average of 8.6 kWh.
The darker period of the year lasts for 3.3 months, from November 2 to February 12, with an average daily incident shortwave energy per square meter below 3.9 kWh. The darkest day of the year is December 22, with an average of 2.7 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Cortez-Montezuma County Airport are 37.303 deg latitude, -108.629 deg longitude, and 5,997 ft elevation.
The topography within 2 miles of Cortez-Montezuma County Airport contains only modest variations in elevation, with a maximum elevation change of 394 feet and an average elevation above sea level of 5,946 feet. Within 10 miles contains only modest variations in elevation (4,521 feet). Within 50 miles also contains extreme variations in elevation (8,976 feet).
The area within 2 miles of Cortez-Montezuma County Airport is covered by shrubs (60%), cropland (28%), and grassland (12%), within 10 miles by shrubs (65%) and cropland (18%), and within 50 miles by shrubs (71%) and trees (22%).
This report illustrates the typical weather at Cortez-Montezuma County Airport, 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
Cortez-Montezuma County Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.
In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.
The stations on which we may fall back are Four Corners Regional Airport; Durango–La Plata County Airport; Telluride Regional Airport; Montrose Regional Airport; Stevens Field; Pagosa Springs, Wolf Creek Pass; and Canyonlands Field.
Time zones for aiports and weather stations are provided by AskGeo.com .