The numerical asymmetry occurs because the time when the Sun is partially above the horizon is counted towards the daytime. Also, the above numbers are average numbers: the ellipticity of the Earth's orbit makes the South Pole receive a week more of Sun-below-horizon than the North Pole (see equinox). Types of polar night Early afternoon during the polar night in TromsÃ¸, Norway.
0am: The Parris Island, SC forecast for Jan 10 is 50 degrees and Partly cloudy. There is 95 percentage chance of rain and 8 mph winds from the East-Northeast. 3am: The Parris Island, SC forecast for Jan 10 is 50 degrees and Partly cloudy. There is 100 percentage chance of rain and 9 mph winds from the East-Northeast. 6am: The Parris Island, SC forecast for Jan 10 is 50 degrees and Cloudy.
Climate. In general, Perris has a sunny, mild Mediterranean climate. On average, Perris gets only 10 inches of rain per year. The humidy is quite low all year. The July high temperatures average 97 degrees, while January low temperatures average 35 degrees.There are 275 sunny days per year. Air quality in Perris, CA is 13 on a scale to 100 (higher is better). 2  This is based on ozone alert days and number of pollutants in the air, as reported by the EPA. 3  Water quality in Perris, CA is 50 on a scale to 100 (higher is better). 4  The EPA has a complex method of measuring watershed quality using 15 indicators.