Explain California's typical Mediterranean climate pattern, dry summers and wetter winters, and describe how location, coastal versus inland, changes local weather within the state.
Most of California has a Mediterranean climate: generally dry, warm-to-hot summers and cooler, wetter winters, which is actually unusual worldwide, since most places get rain spread more evenly across the year. California's weather also varies a great deal by location: the coast stays milder with more fog, including the marine layer that often blankets the coast in the morning, inland valleys get much hotter summers, and mountains get far more snow in winter.
California is also prone to multi-year droughts, and especially from late summer through fall, wildfire risk rises sharply once vegetation has dried out over the long, rainless summer.
Mastery looks like: They explain California's dry-summer, wet-winter pattern and describe at least one specific coastal-versus-inland difference correctly.
Common stumbles: Assuming all of California has the same weather everywhere, or confusing California's dry summer with year-round dryness, forgetting that winter is the wetter season.