United States
Best Time to Visit
Napa Valley
Visit in June — score 95/100 · avg high 100°F · 1 rainy days
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See how the best month changes based on your travel style
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Monthly Travel Scores
How we scoreScores reflect weather comfort (35%), dry days (35%), daylight hours (15%), crowd levels (10%), and cost (5%) — weighted for typical travelers preferring warm, dry conditions. Customize weights in the interactive tool.January
February
March
April
May
June
#1July
#2August
#3September
October
November
December
Monthly Weather Data
| Month | Score | Avg °F | High °F | Low °F | Rain Days | Precip (mm) | Daylight | Crowds | Cost |
|---|---|---|---|---|---|---|---|---|---|
| January | 9 | 46° | 64° | 30° | 31 | 122 | 9.6h | Low | Below avg |
| February | 12 | 48° | 67° | 31° | 28 | 117 | 10.6h | Moderate | Average |
| March | 16 | 50° | 73° | 33° | 26 | 102 | 11.7h | Moderate | Average |
| April | 55 | 54° | 81° | 35° | 10 | 40 | 13.0h | High | Average |
| May | 79 | 60° | 89° | 41° | 4 | 17 | 14.1h | High | Above avg |
| June | 95 | 68° | 100° | 46° | 1 | 5 | 14.7h | Very High | Above avg |
| July | 95 | 73° | 103° | 50° | 0 | 0 | 14.4h | Very High | Above avg |
| August | 95 | 72° | 102° | 51° | 0 | 0 | 13.5h | Very High | Above avg |
| September | 89 | 70° | 102° | 49° | 1 | 5 | 12.2h | Very High | Above avg |
| October | 60 | 62° | 92° | 43° | 10 | 42 | 11.0h | High | Average |
| November | 29 | 52° | 78° | 34° | 17 | 69 | 9.9h | Moderate | Average |
| December | 6 | 46° | 65° | 30° | 31 | 131 | 9.3h | Moderate | Below avg |
Seasonal Breakdown
Spring
- Score
- 50/100
- High
- 81°F
- Low
- 36°F
- Rain days
- 13/mo
- Crowds
- high
Spring in Napa Valley (March, April, May) brings average highs of 81°F and lows of 36°F, with about 13 rainy days per month. Expect high tourist crowds and above average accommodation rates. The overall travel score averages 50/100, with May being the strongest month of the season at 79/100.
Summer
- Score
- 95/100
- High
- 102°F
- Low
- 49°F
- Rain days
- 0/mo
- Crowds
- very high
Summer in Napa Valley (June, July, August) brings average highs of 102°F and lows of 49°F, with about 0 rainy days per month. Expect very high tourist crowds and above average accommodation rates. The overall travel score averages 95/100, with August being the strongest month of the season at 95/100.
Fall
- Score
- 59/100
- High
- 91°F
- Low
- 42°F
- Rain days
- 10/mo
- Crowds
- high
Fall in Napa Valley (September, October, November) brings average highs of 91°F and lows of 42°F, with about 10 rainy days per month. Expect high tourist crowds and above average accommodation rates. The overall travel score averages 59/100, with September being the strongest month of the season at 89/100.
Winter
- Score
- 9/100
- High
- 66°F
- Low
- 30°F
- Rain days
- 30/mo
- Crowds
- moderate
Winter in Napa Valley (December, January, February) brings average highs of 66°F and lows of 30°F, with about 30 rainy days per month. Expect moderate tourist crowds and average accommodation rates. The overall travel score averages 9/100, with February being the strongest month of the season at 12/100.
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Fine-Tune Your Napa Valley Trip
Want more control? Adjust the exact weight of every factor — temperature comfort, dry weather, daylight hours, crowd levels, and cost — with interactive sliders and see scores update in real time.