Napa 7-day weather forecast

Written by:
March 9, 2026
ESOlex // Shutterstock

Napa 7-day weather forecast

Stacker created the forecast for Napa, California using data from OpenWeather. This week's high is 88 °F on Thursday, while the low is 47 °F on Sunday. There are expected to be 3 sunny days and precipitation on 0 days this week.

NWS San Francisco CA has issued a heat advisory until Saturday at 08:00 PM.

Monday, March 16

- High of 85 °F, low of 57 °F (40% humidity)
- Overcast with a 0% chance of rain
- High risk of harm from sun exposure (6 UV index)
- Light breeze (4 mph wind)
- Sunrise at 7:18 AM, sunset at 7:16 PM
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1 / 6
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Tuesday, March 17

- High of 86 °F, low of 59 °F (43% humidity)
- Sunny with a 0% chance of rain
- High risk of harm from sun exposure (6 UV index)
- Light breeze (4 mph wind)
- Sunrise at 7:17 AM, sunset at 7:17 PM
2 / 6
Andrzej Kubik // Shutterstock

Wednesday, March 18

- High of 87 °F, low of 61 °F (43% humidity)
- Sunny with a 0% chance of rain
- High risk of harm from sun exposure (6 UV index)
- Light breeze (4 mph wind)
- Sunrise at 7:15 AM, sunset at 7:18 PM
- New moon
3 / 6
liseykina // Shutterstock

Thursday, March 19

- High of 88 °F, low of 62 °F (39% humidity)
- Fair with a 0% chance of rain
- High risk of harm from sun exposure (7 UV index)
- Light breeze (4 mph wind)
- Sunrise at 7:14 AM, sunset at 7:19 PM
4 / 6
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Friday, March 20

- High of 88 °F, low of 63 °F (39% humidity)
- Partly cloudy with a 0% chance of rain
- High risk of harm from sun exposure (7 UV index)
- Light breeze (4 mph wind)
- Sunrise at 7:12 AM, sunset at 7:20 PM
5 / 6
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Saturday, March 21

- High of 85 °F, low of 62 °F (37% humidity)
- Overcast with a 0% chance of rain
- High risk of harm from sun exposure (7 UV index)
- Light breeze (5 mph wind)
- Sunrise at 7:10 AM, sunset at 7:21 PM
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6 / 6
STILLFX // Shutterstock

Sunday, March 22

- High of 73 °F, low of 47 °F (39% humidity)
- Mostly cloudy with a 0% chance of rain
- High risk of harm from sun exposure (7 UV index)
- Light breeze (7 mph wind)
- Sunrise at 7:09 AM, sunset at 7:22 PM

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