The Earth rotates once in about 24 hours with respect to the sun and once every 23 hours 56 minutes and 4 seconds with respect to the stars (see below). Earth's rotation is slowing slightly with time; thus, a day was shorter in the past.
Hourly Forecast Detailed. 1  0am:The Rochester, WA forecast for Apr 08 is 44 degrees and Clear. There is 80 percentage chance of rain and 11 mph winds from the South. 2  3am:The Rochester, WA forecast for Apr 08 is 41 degrees and Patchy rain possible. There is 89 percentage chance of rain and 9 mph winds from the South.
Rochester Temperatures: Averages by Month. The numbers here tell you how hot and cold the weather usually is in Rochester, New York during each month of the year. The average high and low temperatures are listed below monthly and annually for the city, in both degrees Fahrenheit and Celsius.