Napa weather in October
October in Napa: warm, dry, with clean air — an excellent time to visit.
#4 of 12 months in Napa · #42 of 604 destinations to visit in October · comfort 91/100 (tier S)
Updated June 2026 · climate normals from ERA5 reanalysis
Napa climate normals — October
| Daytime high | 27°C / 81°F | 🌤 warm |
|---|---|---|
| Nighttime low | 13°C / 56°F | |
| Feels like (high) | 25°C / 77°F | |
| Rainfall | 27 mm / 1.1 in | ☀️ dry |
| Rainy days | 2 days | |
| Humidity | 61% | 💧 humid |
| Dew point | 9°C / 49°F | |
| Sunshine | 9.5 h/day | |
| Daylight | 11.2 h | |
| Wind | 13 km/h / 8 mph | |
| Air quality (US AQI) | 30 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Napa in October — FAQ
- Is October a good time to visit Napa?
- October in Napa: warm, dry, with clean air — an excellent time to visit. It ranks #4 of 12 months for Napa on SeasonMap's comfort score (91/100).
- What is the weather like in Napa in October?
- In October, Napa averages a daily high of 27.1°C and a low of 13.1°C, with about 26.7 mm of rain over roughly 1.6 rainy days.
- What is the air quality in Napa in October?
- Napa has a mean US Air Quality Index of about 30 in October.