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 81 °F on Monday, while the low is 56 °F on Saturday. There are expected to be 4 sunny days and rain on 1 day this week.

There are currently no weather alerts.

Monday, September 8

- High of 81 °F, low of 60 °F (44% humidity)
- Sunny with a 0% chance of rain
- Very high risk of harm from sun exposure (7 UV index)
- Gentle breeze (12 mph wind)
- Sunrise at 6:45 AM, sunset at 7:28 PM
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1 / 6
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Tuesday, September 9

- High of 74 °F, low of 60 °F (59% humidity)
- Overcast with a 42% chance of rain (0 mm of rain)
- High risk of harm from sun exposure (6 UV index)
- Gentle breeze (10 mph wind)
- Sunrise at 6:46 AM, sunset at 7:27 PM
2 / 6
gillmar // Shutterstock

Wednesday, September 10

- High of 78 °F, low of 59 °F (47% humidity)
- Partly cloudy with a 0% chance of rain
- High risk of harm from sun exposure (6 UV index)
- Gentle breeze (10 mph wind)
- Sunrise at 6:46 AM, sunset at 7:25 PM
3 / 6
supergenijalac // Shutterstock

Thursday, September 11

- High of 79 °F, low of 57 °F (43% humidity)
- Sunny with a 0% chance of rain
- High risk of harm from sun exposure (7 UV index)
- Gentle breeze (8 mph wind)
- Sunrise at 6:47 AM, sunset at 7:23 PM
4 / 6
Rachasie // Shutterstock

Friday, September 12

- High of 79 °F, low of 57 °F (43% humidity)
- Sunny with a 0% chance of rain
- High risk of harm from sun exposure (7 UV index)
- Light breeze (7 mph wind)
- Sunrise at 6:48 AM, sunset at 7:22 PM
5 / 6
South12th Photography // Shutterstock

Saturday, September 13

- High of 81 °F, low of 56 °F (34% humidity)
- Sunny with a 0% chance of rain
- High risk of harm from sun exposure (7 UV index)
- Moderate breeze (13 mph wind)
- Sunrise at 6:49 AM, sunset at 7:20 PM
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6 / 6
Stepan Bessmelnitsin // Shutterstock

Sunday, September 14

- High of 80 °F, low of 57 °F (42% humidity)
- Partly cloudy with a 0% chance of rain
- High risk of harm from sun exposure (7 UV index)
- Moderate breeze (13 mph wind)
- Sunrise at 6:50 AM, sunset at 7:19 PM
- Last quarter moon

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