Calistoga Weather in September

During September, Calistoga experiences very high daytime temperatures of 31°C (88°F) and cooler nights around 11°C (52°F). Rainfall is low, averaging just 5.2 mm (0.2 in) for the month.

Rainfall in Calistoga in September

Typically, you can expect about a single day of rain this month, with 5.2 mm (0.2 in) on average. On the rare occasion it rains, expect a brief, moderate shower rather than a heavy downpour.

Temperature in Calistoga in September

Calistoga in September is worth a visit. The temperature is excellent, with 31°C (88°F) during the day and 11°C (52°F) at night. For most visitors, the main thing to prepare for is the heat during the day. Nights cool down to 11°C (52°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Calistoga in September

Expect a lot of sunshine this month, with about 275 hours of sun. These sunny conditions add to the overall experience.

If you prefer dry days with pleasant temperatures, April, May and October typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.