<human>:  Can you describe the weather in San Francisco?
<bot>: The weather in San Francisco is usually mild and temperate with cool, wet winters and relatively dry summers. The average temperature ranges from around 40-70°F (4-21°C) throughout the year. It's usually foggy and often breezy in the summer months, and rainy between November and March. The city also experiences occasional frost and snowfall in the winter months.