Mid-autumn · Weather & things to do
Sonoma in October
Sonoma cools off: highs slip to 78°F (26°C), from 88°F in September, with lows of 52°F (11°C) and about 1.3 in (34 mm) of rain.
October opens the best stretch on our comfort score, at 100/100 (the top score of the year).
- Avg high
- 78°F (26°C)
- Avg low
- 52°F (11°C)
- Rain
- 1.3 in (34 mm)
- Humidity
- 54%
- Cloud cover
- 31%
- Daylight
- ~10 h 59 min
- Comfort score
- 100/100 · Great
What October feels like
Days are warm, averaging 78°F (26°C), easy weather for being outside from morning to evening.
There's a big swing between day and night, about 15°C (26°F), so mornings and evenings feel much cooler than the afternoon.
Rain is moderate at about 1.3 in (34 mm) for the month.
Clear skies are common, with cloud cover averaging only 31%.
Plan around October
October is one of Sonoma's best months on the climate data.
- Last warm month for a while: November highs fall to 65°F.
- Last dry month before the rain picks up: November brings 2.8 in (72 mm).
- Opens the best-scoring stretch on our comfort score: April – June and October & November.
- Comfort improves from 83/100 in September to 100/100.
- October sits inside the Apr – Oct window our California Wine Country route recommends.
What to pack for October
- Light, breathable clotheshighs average 78°F
- A warm layer for eveningslows near 52°F
- Comfortable walking shoesmost picks involve some walking
What to do in Sonoma in October
October is good outdoor weather here, so these picks lean toward the open air.
Jack London State Historic Park
Ranch trails, vineyard views and the ruins of Jack London's Wolf House.
Why now October scores 100/100 for comfort, good conditions for being outside.
The Girl & the Fig
Wine-country French cooking just off the plaza, open since 1997.
Why now Highs near 78°F and 1.3 in of monthly rain make this an easy outdoor pick.
Mission San Francisco Solano
The last of California's 21 missions, part of Sonoma State Historic Park.
Why now One to do outside while the weather is on your side.
Buena Vista Winery
California's oldest commercial winery (1857), with historic stone cellars.
Basque Boulangerie Café
Plaza bakery for pastries, coffee and sandwiches to take on the road.
Nearby in October
- Napa in October~18 mi · highs 75°F, 1.3 in rain · 2°C (3°F) cooler by day, about as wet
- Healdsburg in October~31 mi · highs 71°F, 1.9 in rain · 4°C (8°F) cooler by day, wetter
- San Francisco in October~36 mi · highs 71°F, 1.1 in rain · 4°C (8°F) cooler by day, about as wet
- Old Sacramento Waterfront in October~55 mi · highs 80°F, 1.2 in rain · similar daytime temperatures, about as wet
NASA POWER 2001–2025 monthly averages on a ~50 km grid, temperatures adjusted from the grid cell's ~266 m to Sonoma's ~26 m elevation (standard lapse rate). Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Sonoma in October: quick answers
Is October a good time to visit Sonoma?
Yes. On the climate data it's one of the best months, scoring 100/100. Expect highs of 78°F (26°C) and 1.3 in (34 mm) of rain. October is inside the Apr – Oct window our California Wine Country route recommends.
How hot is Sonoma in October?
Average highs are 78°F (26°C) and average lows 52°F (11°C), making it the 5th-warmest month by daytime highs.
Does it rain a lot in Sonoma in October?
Not much: about 1.3 in (34 mm) of rain falls across October on average, the 6th-driest month of the year. The annual total is about 27.1 in (689 mm).
What should I pack for Sonoma in October?
Bring light, breathable clothes (highs average 78°F), a warm layer for evenings (lows near 52°F) and comfortable walking shoes (most picks involve some walking).
Routes in season in October
- California Wine Country Apr – Oct
Planning Sonoma in October?
Bring the crew into one shared trip: vote on dates, build the day-by-day plan, split costs and share one packing list.