Waves are formed by disturbance of particles of the medium. It may be longitudinal or mechanical. In mathematics and science, a wave is a disturbance that travels through space and time, usually accompanied by the transfer of energy.
Guide to Estes Park weather in September The average maximum daytime temperature in Estes Park in September is a comfortable 16Â°C (61Â°F). The average night-time temperature is usually a very cold -1Â°C (30Â°F).
Dates: September - November. Weather: Fall is beautiful in Yellowstone with crisp, cool air and the aspens glowing with a palette of oranges, yellows and reds. It is another great time to visit the Park. There is less traffic and the scenery dressed in all the fall colors is awe-inspiring.