Napa 7-day weather forecast

Written by:
March 23, 2026
ESOlex // Shutterstock

Napa 7-day weather forecast

Stacker created the forecast for Napa, California using data from OpenWeather. This week's high is 87 °F on Sunday, while the low is 46 °F on Thursday. There are expected to be 5 sunny days and rain on 1 day this week.

There are currently no weather alerts.

Monday, May 11

- High of 81 °F, low of 53 °F (27% humidity)
- Mostly cloudy with a 0% chance of rain
- Very high risk of harm from sun exposure (9 UV index)
- Light breeze (5 mph wind)
- Sunrise at 6:01 AM, sunset at 8:09 PM
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1 / 6
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Tuesday, May 12

- High of 79 °F, low of 53 °F (33% humidity)
- Overcast with a 0% chance of rain
- Very high risk of harm from sun exposure (9 UV index)
- Gentle breeze (8 mph wind)
- Sunrise at 6:00 AM, sunset at 8:10 PM
2 / 6
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Wednesday, May 13

- High of 69 °F, low of 48 °F (35% humidity)
- Mostly sunny with a 50% chance of rain (1 mm of rain)
- Very high risk of harm from sun exposure (8 UV index)
- Moderate breeze (16 mph wind)
- Sunrise at 5:59 AM, sunset at 8:11 PM
3 / 6
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Thursday, May 14

- High of 79 °F, low of 46 °F (31% humidity)
- Sunny with a 0% chance of rain
- Very high risk of harm from sun exposure (9 UV index)
- Gentle breeze (11 mph wind)
- Sunrise at 5:58 AM, sunset at 8:12 PM
4 / 6
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Friday, May 15

- High of 83 °F, low of 50 °F (27% humidity)
- Sunny with a 0% chance of rain
- Very high risk of harm from sun exposure (10 UV index)
- Gentle breeze (8 mph wind)
- Sunrise at 5:58 AM, sunset at 8:13 PM
5 / 6
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Saturday, May 16

- High of 83 °F, low of 51 °F (19% humidity)
- Mostly sunny with a 0% chance of rain
- Very high risk of harm from sun exposure (10 UV index)
- Gentle breeze (11 mph wind)
- Sunrise at 5:57 AM, sunset at 8:14 PM
- New moon
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6 / 6
Rachasie // Shutterstock

Sunday, May 17

- High of 87 °F, low of 48 °F (19% humidity)
- Sunny with a 0% chance of rain
- Very high risk of harm from sun exposure (10 UV index)
- Gentle breeze (8 mph wind)
- Sunrise at 5:56 AM, sunset at 8:14 PM

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