The park may have restrictions to some campsites and road edges due to monsoon storm damage.

Annual Weather

Lost Dutchman State Park is located in the Sonoran Desert of the southwestern United States at an elevation of 2,000 feet. The climate is arid with an average annual rainfall of about 14 inches. During the winter, daytime temperatures usually reach 60° F.

The weather is predominantly sunny with seasonal winter rains coming from the Pacific Ocean. Summer months are extremely hot with daytime temperatures soaring above 100°. Hot weather in July and August can produce thunder, lightning, blowing dust, and occasionally heavy rain. This “monsoon” season normally ends by the latter half of September. The park's busy season is October to April when temperatures are moderate.

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

Month High Low Precipitation
January 65° F 40° F 1.51"
February 70° 42° 1.40"
March 75° 45° 1.96"
April 83° 51° 0.53"
May 92° 58° 0.26"
June 102° 67° 0.03"
July 104° 75° 0.80"
August 102° 75° 1.60"
September 98° 69° 0.86"
October 86° 58° 0.87"
November 73° 47° 1.17"
December 65° 41° 1.30"

Weather information is provided as a general guide for planning your visit. Consult current conditions before travel.