What To Expect Finding out about weather conditions can help you prepare for your visit to the John Muir National Historic Site. Please see the information below for general weather. We suggested that you do an internet search if you'd like to find out specifics for the day or week of your visit.
Martinez California Weather
The Mediterranean climate of Martinez features hot, dry summers with lower temperatures near 60º F and upper temperatures near 100º F. The heat gives way to cool, rainy winters with lows near 45º F and highs near 75º F. Fall and spring can bring rain and temperatures from 55-80º F.
For current weather information, please click here: Weather Information
March to April: wet/dry, 60-80º F
May to September: very dry, 60-100º+ F
October to November: dry/wet, 55-80º F
December to February: wet, 45-75º F