Napa Junction, CA
Unincorporated community in Napa County, California
Napa Junction is a small unincorporated community in Napa County, California. It is 0.8 miles SW of American Canyon, the nearest town. Its ZIP code is 94503.
Napa Junction at a glance
- State
- California
- County
- Napa County
- ZIP code
- 94503
- Nearest town
- American Canyon (0.8 mi)
- Time zone
- America/Los Angeles
- Coordinates
- 38.1875, -122.2497
Weather in Napa Junction now
Loading the National Weather Service forecast…
Napa Junction weather by the hour
Napa Junction weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Napa Junction.
This week in Napa Junction
Sunrise, sunset and moon in Napa Junction
What is the weather usually like in Napa Junction?
Köppen climate classification, calculated from the 1991–2020 normals
- Septemberwarmest month · 80°F average high
- Decembercoldest month · 38°F average low
- 20.2 inprecipitation per year · 514 mm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Napa Junction: June to September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station NAPA CO AP, CA US (USW00093227), adjusted for the elevation of Napa Junction.
Napa Junction weather month by month
Sunrise and sunset in Napa Junction through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:22 AM | 5:14 PM | 9 h 51 min |
| February | 6:57 AM | 5:48 PM | 10 h 51 min |
| March | 7:18 AM | 7:17 PM | 11 h 59 min |
| April | 6:31 AM | 7:46 PM | 13 h 15 min |
| May | 5:56 AM | 8:14 PM | 14 h 18 min |
| June | 5:43 AM | 8:35 PM | 14 h 51 min |
| July | 5:56 AM | 8:33 PM | 14 h 36 min |
| August | 6:22 AM | 8:04 PM | 13 h 41 min |
| September | 6:49 AM | 7:18 PM | 12 h 28 min |
| October | 7:16 AM | 6:32 PM | 11 h 15 min |
| November | 6:49 AM | 4:58 PM | 10 h 9 min |
| December | 7:16 AM | 4:51 PM | 9 h 34 min |
Times for the 15th of each month, local time (America/Los Angeles).
What is the weather like in Napa Junction?
Napa Junction has a warm-summer mediterranean climate. The warmest month is September, with an average high of 80°F (27°C), and the coldest is December, with average lows of 38°F (3°C).
It gets about 20.2 inches (514 mm) of precipitation a year. The wettest month is January and the driest is July.
The best time to visit Napa Junction is June to September. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.
Webcams near Napa Junction
The closest live webcam is American Canyon: American Canyon Facility › West: TV482 - SR-12 : AT EOF KELLY RD, 2.4 miles N of Napa Junction.
Webcams: Windy.com · Traffic cameras: Caltrans. Distances in a straight line from Napa Junction.
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Map of Napa Junction, CA
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Napa Junction Street View
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Questions about Napa Junction
Where is Napa Junction, CA?
Napa Junction is an unincorporated community in Napa County, California, 0.8 miles SW of American Canyon.
What county is Napa Junction in?
Napa Junction is in Napa County, California.
What is the ZIP code of Napa Junction, CA?
The ZIP code for Napa Junction is 94503.
What is the nearest town to Napa Junction?
American Canyon, 0.8 miles away.
Are there webcams near Napa Junction?
Yes. The closest is American Canyon: American Canyon Facility › West: TV482 - SR-12 : AT EOF KELLY RD, 2.4 miles away.
What is the hottest month in Napa Junction?
September, with an average high of 80°F (27°C).
What is the coldest month in Napa Junction?
December, with an average low of 38°F (3°C).
How much does it rain in Napa Junction?
About 20.2 inches (514 mm) a year; the wettest month is January.
Does it snow in Napa Junction?
Snow is very rare or not recorded at the nearest weather station.
When is the best time to visit Napa Junction?
June to September, when temperatures are most pleasant and rainy days are fewer.
What climate does Napa Junction have?
Warm-summer mediterranean (Köppen Csb).
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