Napa Weather Forecast
Napa weather: 58°F, clear. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
14-day forecast for Napa
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Sat, Aug 22 | ☁️ Overcast | 87° / 54° | 0% | 10 mph | 8 |
| Sun, Aug 23 | 🌥️ Fog | 85° / 56° | 0% | 9 mph | 7 |
| Mon, Aug 24 | ☁️ Overcast | 82° / 56° | 1% | 10 mph | 7 |
| Tue, Aug 25 | ☁️ Overcast | 85° / 54° | 0% | 11 mph | 7 |
| Wed, Aug 26 | ☁️ Overcast | 87° / 53° | 1% | 11 mph | 8 |
| Thu, Aug 27 | ☁️ Overcast | 89° / 55° | 4% | 11 mph | 7 |
| Fri, Aug 28 | ☀️ Clear sky | 87° / 56° | 1% | 10 mph | 7 |
| Sat, Aug 29 | ⛅ Partly cloudy | 89° / 55° | 1% | 10 mph | 7 |
| Sun, Aug 30 | ☁️ Overcast | 84° / 55° | 1% | 13 mph | 7 |
| Mon, Aug 31 | ☀️ Clear sky | 82° / 53° | 0% | 11 mph | 7 |
| Tue, Sep 1 | ☁️ Overcast | 79° / 55° | 1% | 8 mph | 6 |
| Wed, Sep 2 | ☁️ Overcast | 78° / 54° | 0% | 8 mph | 7 |
| Thu, Sep 3 | ☀️ Clear sky | 86° / 53° | 0% | 8 mph | 7 |
| Fri, Sep 4 | 🌤️ Mainly clear | 83° / 53° | 3% | 10 mph | 7 |
The two-week trend
Steady. The second week averages within a degree of the first, so no big change is signalled.
The window averages 86°F against a August normal of 87°F - right on average.
The next 7 days look unusually dry - roughly 0% of a normal August week (0,0 in against 0,0 in).
What this means for Napa
Today is about average for August. The forecast high of 87°F is in line with the 87°F typical for this month.
Rain is very unlikely today - plans do not need a backup.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 53°F.
What to pack, what to skip
- Lightweight, light-coloured clothing and a refillable water bottle
- Sunglasses, a brimmed hat and SPF 30+
- If your dates are flexible, avoid January, February and December - historically the least comfortable months here.
See the Napa forecast by time range
Napa weather - more answers
Explore Napa
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
Frequently asked questions
Where is Napa?
Napa is a city in California. Its coordinates are 38.2975, -122.2869. It lies in North America.
What is the weather like in Napa right now?
It is currently 58°F (14°C) with clear. Humidity is 91% and wind is 5 mph.
When is the best time to visit Napa?
May, June, July, August and September offer the most comfortable conditions in Napa, which has a Mediterranean climate. January, February and December are usually the hardest months for outdoor plans.
What time zone is Napa in?
Napa observes America/Los_Angeles (UTC-07:00). The local time is 5:44 AM.
How many people live in Napa?
Napa has a population of approximately 80.000.
What is the nearest airport to Napa?
The closest airports are San Francisco International Airport (SFO), 47 mi away.
What are the top things to do in Napa?
Popular options include Alcatraz Island, Golden Gate Bridge, Point Lobos State Natural Reserve, Emerald Bay State Park, Lake Tahoe and Pinnacles National Park.
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| Place data | USPOTUS Atlas dataset (cities-us) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 22, 2026 at 5:44 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
