City in California

Napa 天気 予報

Napa weather: 17°C, 晴れ. 時間別 forecast, 14-day outlook, UV, air quality and the best timeからvisit.

🌙 17°C now🕔 6:40 AM local📅 Best: 5月, 6月, 7月, 8月 and 9月👥 80.000

Napa weather in 9月

28°
average high · low 13°C
★★★★★
ranked #4 of 12 months

One of the best monthsからvisit Napa.

Average high28°C
Average low13°C
Mean19°C
雨fall6 mm

9月 runs 4°C warmer than the annual average in Napa.

天気 map for Napa

Animated model layers. Pick a layerからload it.

Loading map…

Animated layers by 風y. For pin-level detail and nearby places, see the interactive map below.

気候 in Napa month by month

Average high, average low and total rainfall, based on three years of reanalysis data.

Line: average high · Bars: rainfall
月Avg highAvg low雨fallRating
1月15°5°98 mm★★★☆☆
2月16°6°187 mm★★☆☆☆
3月19°7°88 mm★★★★☆
4月20°8°55 mm★★★★☆
5月24°11°16 mm★★★★★
6月28°12°1 mm★★★★★
7月29°13°1 mm★★★★★
8月30°14°2 mm★★★★★
9月28°13°6 mm★★★★★
10月25°12°23 mm★★★★★
11月18°8°111 mm★★★☆☆
12月15°6°178 mm★★☆☆☆

気候 type: Mediterranean. 出典: Open-Meteo archive (ERA5).

訪問に最適な時期 Napa

Go in 5月, 6月, 7月, 8月 and 9月. These months score highest on comfortable temperatures, low rainfall and useful daylight.

Hardest months: 1月, 2月 and 12月 - expect the least comfortable mix of heat, cold or rain.

1月★★★☆☆
2月★★☆☆☆
3月★★★★☆
4月★★★★☆
5月★★★★★
6月★★★★★
7月★★★★★
8月★★★★★
9月★★★★★
10月★★★★★
11月★★★☆☆
12月★★☆☆☆

Whatからpack, whatからskip

Pack for the next 7 days
  • Layers - the daily swing is 17°C, so mornings feel nothing like afternoons
Worth avoiding
  • If your dates are flexible, avoid 1月, 2月 and 12月 - historically the least comfortable months here.

How Napa compares、nearby places

Annual averages, and the difference against Napa.

PlaceDistanceAvg tempvs hereAnnual rain
Alcatraz Island54 km14°C1°C cooler647 mm
Fisherman's Wharf56 km14°C1°C cooler647 mm
Golden Gate Bridge56 km14°C1°C cooler647 mm
ZIP Code 9413356 km14°C1°C cooler647 mm
ZIP Code 9410259 km14°C1°C cooler647 mm

時間帯別のNapa 予報を見る

Napa weather - more answers

Explore Napa

Every topic we hold for this place, and the same topic for the places around it.

天気 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 北アメリカ.

What is the weather like in Napa現在?

It is currently 17°C (63°F)、晴れ. 湿度 is 49% and wind is 8 km/h.

When is the best timeからvisit Napa?

5月, 6月, 7月, 8月 and 9月 offer the most comfortable conditions in Napa, which has a Mediterranean climate. 1月, 2月 and 12月 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 6:40 AM.

How many people live in Napa?

Napa has a population of approximately 80.000.

What is the nearest airportからNapa?

The closest airports are San Francisco International Airport (SFO), 76 km away.

What are the top thingsからdo in Napa?

Popular options include Alcatraz Island, Golden Gate Bridge, Point Lobos State Natural Reserve, Emerald Bay State Park, Pinnacles National Park and 7月ia Pfeiffer Burns State Park.

Related articles

Data sources and methodology

Place dataUSPOTUS Atlas dataset (cities-us) - coordinates, hierarchy and facts.
予報 and observationsOpen-Meteo (ECMWF and national models).
大気質 and pollenCopernicus CAMS via Open-Meteo. US AQI scale.
気候 averagesERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years.
Official alertsUS National 天気 Service.
MethodScores, 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 10月 25, 2026 at 6:40 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.

Davil Hofile
Written byWriter at USPOTUS

Davil Hofile is a writer at USPOTUS covering breaking news, NFL updates, viral stories, entertainment, pets, and lifestyle. He specializes in transforming complex news into clear, trustworthy, and engaging articles that help readers quickly understand what's happening across the United States. His reporting follows Google's E-E-A-T guidelines, emphasizing accuracy, credible sources, and practical value for readers.

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