Weather Forecast for Napa & Sonoma

California, United States of America

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Sunny

Current Weather - Napa & Sonoma: 16°C

California, United States of America

Sunny

Feels like 16°C

Wind

5 km/h SW

Humidity

88%

Pressure

1014 mb

UV Index

1

Visibility

10 km

Sunny

Sunny

Thursday, July 30, 2026

High

32°C

Low

13°C

Rain Chance

4%

Hourly Forecast

Sunny 32°C
17:00
Sunny 30°C
18:00
Sunny 27°C
19:00
Sunny 23°C
20:00
Clear 21°C
21:00
Clear 15°C
22:00
Clear 14°C
23:00
Jul 31

Day Statistics

Maximum Wind

13 km/h

Humidity

63%

Precipitation

0 mm

UV Index

10

Visibility

10 km

Rain Chance

4%

Snow Chance

0%

Sun & Moon

Sunrise

06:09 AM

Sunset

08:21 PM

Moonrise

09:15 PM

Moonset

07:21 AM

Moon Phase

Waning Gibbous

Moon Illumination

96%

Air Quality

PM2.5

8.4

μg/m³

PM10

11.2

μg/m³

NO₂

7.4

μg/m³

O₃

54.5

μg/m³

SO₂

0.7

μg/m³

CO

96.7

μg/m³

US EPA Index: 1 GB DEFRA Index: 1

Solar Radiation Data

Shortwave Radiation

74.68

Diffuse Radiation

19.7

DNI

0

GTI

0

Weather Alerts

Small Craft Advisory issued July 29 at 8:50PM PDT until July 30 at 9:00PM PDT by NWS San Francisco CA

San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge Jul 29, 08:50 PM - Jul 30, 05:00 AM
Severity: Minor Urgency: Expected

* WHAT...A moderate chop expected. West to southwest winds 5 to 15 kt with gusts to 22 kt expected. * WHERE...San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge. * WHEN...From 2 PM to 9 PM PDT Thursday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.

Event: Small Craft Advisory Certainty: Likely Category: Met