Plan your perfect wine country wedding with 30 years of historical weather data. Discover the best months, typical temperatures, and precipitation chances for your Napa Valley vineyard celebration.
Based on 30 years of weather data, June through October offers the ideal conditions for outdoor weddings and events in Napa Valley. The region's Mediterranean climate delivers:
Historical averages based on 30 years of climate data (1995-2024) from the Angwin weather station
| Month | Avg High | Avg Low | Rain Chance | Comfort Score | Event Rating |
|---|---|---|---|---|---|
| January | 54°F | 40°F | 43% | 0/100 | |
| February | 56°F | 40°F | 41% | 0/100 | |
| March | 61°F | 41°F | 36% | 25/100 | |
| April | 66°F | 43°F | 24% | 46/100 | |
| May | 73°F | 47°F | 14% | 90/100 | |
| June | 80°F | 52°F | 4% | 97/100 | |
| July | 85°F | 55°F | 0% | 84/100 | |
| August | 85°F | 55°F | 1% | 80/100 | |
| September | 82°F | 54°F | 5% | 99/100 | |
| October | 73°F | 50°F | 14% | 95/100 | |
| November | 60°F | 44°F | 31% | 17/100 | |
| December | 53°F | 40°F | 45% | 0/100 |
These statistics represent 30-year averages (1995-2024) from the Angwin weather station in the heart of Napa Valley. The Comfort Score (0-100) combines temperature and humidity to indicate how pleasant outdoor conditions typically feel. Napa's dry summers and cool evenings create ideal conditions May through October.
Napa Valley summers can be hot during midday. Schedule outdoor ceremonies for late afternoon (4-5 PM) when temperatures begin to cool. Evening temperatures drop significantly—plan for guests to need light layers or provide blankets for post-dinner festivities.
Summer (June-September) sees virtually no rain—backup plans are rarely needed. If planning a spring (May) or fall (October) event, confirm your venue has indoor options. November-March is the rainy season with 30-45% daily rain probability.
September and October coincide with harvest season—vineyards are at their most beautiful with grapes on the vine and the famous "crush" activities. Be aware that this is peak wedding season and venues book 12-18 months in advance. June offers similar weather with better availability.
Napa Valley's rolling hills and vineyards provide stunning backdrops year-round. In June, sunset occurs around 8:30 PM with golden hour beginning at 7 PM. The region is known for its warm, amber light that makes skin tones glow—photographers love it here.
Explore hour-by-hour weather patterns, sunrise/sunset times, and comfort ratings for your specific event date in Napa Valley.
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