United StatesAverage weather for Napa in April
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.
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. A few showers might pop up early in the month, but overall, it’ll stay mostly sunny and dry.
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.
In April, there is an average of 31 mm of precipitation, spread over 4 days. The wind speed is around 4 Bft, mostly coming from the Southwest.
Napa in April |
New York | ||
|---|---|---|---|
 Average temperature |
21°C | 17°C | |
 Max. temperature |
25°C | 22°C | |
| Min. temperature |
18°C | -5°C | |
 Total precipitation |
31 mm | 81 mm | |
| Rainy days |
4 days | 11 days | |
March
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.
Is April a good time to visit Napa?
Looking for great weather? April is a good time to be in Napa. The temperatures are nice, and there’s not too much rain.
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.
Check out the climate of Napa for all months and discover the best travel time
Daily Temperature in April in Napa
This chart shows the average daily high and low temperatures in April for Napa, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in April in Napa
The chart below shows the average daily precipitation in April for Napa, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for April, you can expect about 4 days of precipitation in Napa.
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.
Temperature in April in Napa over the years
This chart shows the average temperature in April in Napa, measured in degrees Celsius, over the past few years.
Total precipitation in April in Napa over the years
This chart shows the average precipitation in April in Napa, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
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.
Weather experiences in April in Napa
Have you been to Napa in April?
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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.
