The most accurate weather for the Ridgecrest area can be found at the NOAA website:

Ridgecrest, CA

Ridgecrest  is located in the Mojave Desert on the eastern side of the Sierra Mountains at their most southern tip. In town is the Desert Empire Fairgrounds which will be home to the 2019 AERC National Championship Ride.

The Desert Empire Fairgrounds

The Desert Empire Fairgrounds is within the city limits of Ridgecrest, CA and will be the base camp for the 2019 AERC National Championship Rides.  Stalls are available for rent and there is spacious room for parking large rigs.  There is running water in camp (bring a hose) and flush toilets with hot showers.