Napa 7-day weather forecast

Written by:
September 8, 2025
ESOlex // Shutterstock

Napa 7-day weather forecast

Stacker created the forecast for Napa, California using data from OpenWeather. This week's high is 95 °F on Tuesday, while the low is 60 °F on Monday. There are expected to be 3 sunny days and precipitation on 1 day this week.

There are currently no weather alerts.

Monday, September 15

- High of 91 °F, low of 60 °F (20% humidity)
- Sunny with a 0% chance of rain
- Very high risk of harm from sun exposure (8 UV index)
- Light breeze (7 mph wind)
- Sunrise at 6:51 AM, sunset at 7:17 PM
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Tuesday, September 16

- High of 95 °F, low of 63 °F (22% humidity)
- Sunny with a 0% chance of rain
- Very high risk of harm from sun exposure (7 UV index)
- Light breeze (7 mph wind)
- Sunrise at 6:52 AM, sunset at 7:15 PM
2 / 6
Cari Rubin Photography // Shutterstock

Wednesday, September 17

- High of 94 °F, low of 64 °F (15% humidity)
- Overcast with a 0% chance of rain
- Very high risk of harm from sun exposure (7 UV index)
- Gentle breeze (8 mph wind)
- Sunrise at 6:52 AM, sunset at 7:14 PM
3 / 6
Alex Stemmer // Shutterstock

Thursday, September 18

- High of 76 °F, low of 61 °F (52% humidity)
- Overcast with a 0% chance of rain
- High risk of harm from sun exposure (6 UV index)
- Light breeze (7 mph wind)
- Sunrise at 6:53 AM, sunset at 7:12 PM
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Nataliia K // Shutterstock

Friday, September 19

- High of 83 °F, low of 61 °F (44% humidity)
- Partly sunny with a 0% chance of rain
- High risk of harm from sun exposure (6 UV index)
- Light breeze (7 mph wind)
- Sunrise at 6:54 AM, sunset at 7:11 PM
5 / 6
South12th Photography // Shutterstock

Saturday, September 20

- High of 85 °F, low of 63 °F (41% humidity)
- Partly cloudy with a 0% chance of rain
- High risk of harm from sun exposure (6 UV index)
- Light breeze (7 mph wind)
- Sunrise at 6:55 AM, sunset at 7:09 PM
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6 / 6
Witaya Proadtayakogool // Shutterstock

Sunday, September 21

- High of 88 °F, low of 61 °F (35% humidity)
- Sunny with a 0% chance of rain
- High risk of harm from sun exposure (6 UV index)
- Light breeze (7 mph wind)
- Sunrise at 6:56 AM, sunset at 7:07 PM
- New moon

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