While Barstow is often a stopover point, the best times to visit for pleasant weather are spring (March to May) and autumn (September to November).During spring, temperatures are mild, typically ranging from 15°C to 25°C, making it comfortable for outdoor activities like exploring the Calico Ghost Town or visiting the Mojave National Preserve. The desert flora can also be seen in bloom, adding to the scenery.Autumn also offers agreeable weather, with temperatures similar to spring. This period avoids the intense heat of summer and the cooler, sometimes windy, days of winter. It's a good time for those planning to spend time outdoors without the discomfort of extreme temperatures.Summer (June to August) can be extremely hot, with temperatures often exceeding 35°C, which can make outdoor sightseeing less enjoyable.