River Island Market is open and the deli is open. Stage I Fire Restrictions are in effect. Wifi is down for repairs until further notice.
Dump station and potable water filling is for use by registered campers only (No OHV use of dump station or filling fresh water tanks).

Annual Weather

Below is a listing of average daily temperatures and monthly precipitation:

River Island State Park Average Daily Temperature (Degrees Fahrenheit) & Monthly Precipitation (Inches)
Month High Low Precipitation
January 67° F 41° F 0.87"
February 73° 45° 0.70"
March 79° 49° 0.65"
April 87° 54° 0.17"
May 95° 63° 0.09"
June 105° 71° 0.02"
July 108° 78° 0.27"
August 107° 78° 0.61"
September 101° 71° 0.57"
October 90° 59° 0.32"
November 76° 47° 0.33"
December 67° 41° 0.57"

Note: Weather data is provided as a general guide only. Arizona State Parks assumes no responsibility for any loss resulting from the use of this information.