Monthly climate guide
Napa weather in October
With highs near 26°C (79°F) and lows around 11°C (52°F), October feels warm in Napa. Rainfall averages about 27 mm (fairly dry) and the sky is mostly sunny. Daytime highs are 5°C cooler than September and 8°C warmer than November.
What stands out in October
- It cools down fast from here: November is about 8°C cooler.
- Just 60 km apart, but Napa runs about 3°C warmer than San Francisco this month.
- Afternoons and nights feel like different seasons, roughly 15°C apart.
- In Napa, October is mid-autumn.
Avg high
26°C
79°F
Avg low
11°C
52°F
Rainfall
27 mm
fairly dry
Humidity
52%
relative
Sky
29%
cloud · mostly sunny
Napa weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 14°C / 56°F | 4°C / 39°F | 116 mm | 83% | 55% |
| February | 15°C / 58°F | 4°C / 40°F | 114 mm | 79% | 47% |
| March | 16°C / 61°F | 6°C / 42°F | 119 mm | 81% | 55% |
| April | 19°C / 67°F | 7°C / 45°F | 39 mm | 75% | 44% |
| May | 23°C / 74°F | 9°C / 48°F | 18 mm | 68% | 37% |
| June | 29°C / 85°F | 12°C / 54°F | 8 mm | 54% | 22% |
| July | 32°C / 89°F | 14°C / 56°F | 0 mm | 48% | 19% |
| August | 32°C / 90°F | 14°C / 57°F | 0 mm | 49% | 24% |
| September | 31°C / 87°F | 14°C / 57°F | 4 mm | 48% | 22% |
| October | 26°C / 79°F | 11°C / 52°F | 27 mm | 52% | 29% |
| November | 18°C / 65°F | 7°C / 44°F | 71 mm | 68% | 43% |
| December | 13°C / 56°F | 4°C / 39°F | 114 mm | 78% | 49% |
What to pack for October
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- An extra layer — evenings are noticeably cooler than afternoons
- Sunglasses
Is October a good time to visit Napa?
Compare the months in the chart above to find your ideal window.
Best time to visit Napa →Other United States cities in October
Cite or embed this data
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Napa weather in October. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/usa/napa/october
<a href="https://weathercompare.eu/weather/usa/napa/october">Napa weather in October</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/usa/napa" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Napa weather in October"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/usa/napa/october">Napa weather in October</a> – WeatherCompare</p>
Napa in October: quick answers
Is October a good time to visit Napa?
Yes. October is one of the best months for Napa, with highs around 26°C and about 27 mm of rain.
How warm is Napa in October?
Average highs are about 26°C (79°F) and average lows about 11°C (52°F), based on 10 years of daily data.
Does it rain a lot in Napa in October?
Napa typically gets around 27 mm of rain in October — fairly dry.
Figures are long-term averages for the area around Napa (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.