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United StatesThe weather in April in Napa
It's pleasantly warm in April in Napa with an average temperature of 21°C. Temperatures this month range from a low of 18°C to a high of 25°C. At night, you can expect temperatures between 6°C and 10°C.
Looking for great weather? April is a good time to be in Napa. The temperatures are nice, and there’s not too much rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in April for Napa, California. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 31°C in 2015, Napa reached the highest temperature in April over the past 10 years. The lowest daytime temperature in this month was 12°C in 2014. The extreme nighttime temperatures ranged from a lowest recorded value of 0°C to a highest value of 15°C.
Rainfall amount
In April, there is an average of 31 mm of precipitation, spread over 6 days. The wind speed is around 4 Bft, mostly coming from the Southwest.
Daily weather in April for Napa
Click on any day in April to get detailed info about the usual weather on that day in Napa. Check out the historical temperatures and precipitation over the past 10 years on this day.
April weather comparison
| Napa | New York | |
|---|---|---|
| Average temperature | 21°C | 17°C |
| Max. temperature | 25°C | 22°C |
| Min. temperature | 6°C | -5°C |
| Total precipitation | 31 mm | 81 mm |
| Rainy days | 6 days | 11 days |
Start of April
The month of April starts in Napa with mild temps, averaging around 20°C during the day and nights around 8°C.
Mid April
By mid-April, daytime temps rise to around 21°C, with nights around 8°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of April
By the end of April, the average daytime temperature in Napa is around 23°C, while nighttime temps are about 9°C. There’s hardly any chance of precipitation. The weather will be mostly dry with plenty of sun.
UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Check out the climate of Napa for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in April in Napa, California. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in April in Napa
Temperature in April in Napa over the years
Precipitation charts
These charts show the average amount of precipitation in April in Napa, California. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in April in Napa
Total precipitation in April in Napa over the years
Daily UV index in April in Napa
This chart shows the average daily UV index in April in Napa, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in April in Napa
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Average weather in Napa by month
Click on a month below to see detailed weather info for Napa. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.