Average Weather at Lamar Municipal Airport Colorado, United States
At Lamar Municipal Airport, the summers are hot and mostly clear and the winters are very cold, dry, windy, and partly cloudy. Over the course of the year, the temperature typically varies from 16°F to 94°F and is rarely below 2°F or above 102°F.
Based on the tourism score, the best time of year to visit Lamar Municipal Airport for warm-weather activities is from early June to mid September.
The hot season lasts for 3.5 months, from June 1 to September 16, with an average daily high temperature above 84°F. The hottest day of the year is July 9, with an average high of 94°F and low of 64°F.
The cold season lasts for 3.0 months, from November 23 to February 22, with an average daily high temperature below 54°F. The coldest day of the year is January 3, with an average low of 16°F and high of 44°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
Yerevan, Armenia (6,653 miles away); Sanandaj, Iran (7,016 miles); and Alik Ghund, Pakistan (7,666 miles) are the far-away foreign places with temperatures most similar to Lamar Municipal Airport (view comparison).
At Lamar Municipal Airport, the average percentage of the sky covered by clouds experiences mild seasonal variation over the course of the year.
The clearer part of the year at Lamar Municipal Airport begins around June 1 and lasts for 5.2 months, ending around November 6. On October 2, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 77% of the time, and overcast or mostly cloudy 23% of the time.
The cloudier part of the year begins around November 6 and lasts for 6.8 months, ending around June 1. On February 15, the cloudiest day of the year, the sky is overcast or mostly cloudy 41% of the time, and clear, mostly clear, or partly cloudy 59% 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 Lamar Municipal Airport varies throughout the year.
The wetter season lasts 4.4 months, from April 23 to September 4, with a greater than 18% chance of a given day being a wet day. The chance of a wet day peaks at 31% on July 29.
The drier season lasts 7.6 months, from September 4 to April 23. The smallest chance of a wet day is 4% on January 16.
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 Lamar Municipal Airport changes throughout the year.
Rain alone is the most common for 9.8 months, from February 5 to November 29. The highest chance of a day with rain alone is 31% on July 29.
Snow alone is the most common for 2.2 months, from November 29 to February 5. The highest chance of a day with snow alone is 4% on January 6.
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. Lamar Municipal Airport experiences significant seasonal variation in monthly rainfall.
The rainy period of the year lasts for 7.5 months, from March 20 to November 4, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around July 29, with an average total accumulation of 2.3 inches.
The rainless period of the year lasts for 4.5 months, from November 4 to March 20. The least rain falls around January 2, with an average total accumulation of 0.0 inches.
Average Monthly Rainfall
The sliding 31-day liquid-equivalent quantity of snowfall at Lamar Municipal Airport does not vary significantly over the course of the year, staying within 0.1 inches of 0.1 inches throughout.
Average Liquid-Equivalent Monthly Snowfall
The length of the day at Lamar Municipal Airport varies significantly over the course of the year. In 2017, the shortest day is December 21, with 9 hours, 31 minutes of daylight; the longest day is June 20, with 14 hours, 49 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:27 AM on June 13, and the latest sunrise is 1 hour, 53 minutes later at 7:20 AM on November 4. The earliest sunset is at 4:30 PM on December 6, and the latest sunset is 3 hours, 47 minutes later at 8:17 PM on June 28.
Daylight saving time (DST) is observed at Lamar Municipal 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
We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.
The perceived humidity level at Lamar Municipal 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, staying within 3% of 3% throughout.
Humidity Comfort Levels
This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.
The average hourly wind speed at Lamar Municipal Airport experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 3.8 months, from March 2 to June 27, with average wind speeds of more than 10.7 miles per hour. The windiest day of the year is April 1, with an average hourly wind speed of 12.0 miles per hour.
The calmer time of year lasts for 8.2 months, from June 27 to March 2. The calmest day of the year is December 19, with an average hourly wind speed of 9.4 miles per hour.
Average Wind Speed
The predominant average hourly wind direction at Lamar Municipal Airport varies throughout the year.
The wind is most often from the north for 2.7 months, from January 26 to April 18, with a peak percentage of 32% on January 31. The wind is most often from the south for 6.7 months, from April 18 to November 8, with a peak percentage of 51% on July 18. The wind is most often from the west for 2.6 months, from November 8 to January 26, with a peak percentage of 35% on January 1.
Best Time of Year to Visit
To characterize how pleasant the weather is at Lamar Municipal 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 Lamar Municipal Airport for general outdoor tourist activities is from early June to mid September, with a peak score in the last week of August.
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 Lamar Municipal Airport for hot-weather activities is from late June to late August, 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.
Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).
The growing season at Lamar Municipal Airport typically lasts for 5.5 months (166 days), from around April 27 to around October 11, rarely starting before April 9 or after May 15, and rarely ending before September 24 or after October 28.
Time Spent in Various Temperature Bands and the Growing Season
Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.
Based on growing degree days alone, the first spring blooms at Lamar Municipal Airport should appear around March 13, only rarely appearing before February 26 or after March 30.
Growing Degree Days
This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.
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 3.5 months, from April 24 to August 8, with an average daily incident shortwave energy per square meter above 6.9 kWh. The brightest day of the year is June 20, with an average of 8.0 kWh.
The darker period of the year lasts for 3.1 months, from November 5 to February 8, with an average daily incident shortwave energy per square meter below 3.7 kWh. The darkest day of the year is December 21, with an average of 2.6 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Lamar Municipal Airport are 38.070 deg latitude, -102.689 deg longitude, and 3,698 ft elevation.
The topography within 2 miles of Lamar Municipal Airport contains only modest variations in elevation, with a maximum elevation change of 197 feet and an average elevation above sea level of 3,701 feet. Within 10 miles contains only modest variations in elevation (492 feet). Within 50 miles contains significant variations in elevation (1,919 feet).
The area within 2 miles of Lamar Municipal Airport is covered by grassland (68%) and cropland (31%), within 10 miles by grassland (50%) and cropland (49%), and within 50 miles by grassland (65%) and cropland (28%).
This report illustrates the typical weather at Lamar Municipal 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
Lamar Municipal 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 include but are not limited to Springfield, Comanche National Grassland; La Junta Municipal Airport; Kit Carson County Airport; Limon Municipal Airport; Goodland Municipal Airport; Ellicott-B Afa; Pueblo Memorial Airport; and Meadow Lake Airport.
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.
All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.
Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.
Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .
Time zones for aiports and weather stations are provided by AskGeo.com .
Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.