Napa Weather in July: Temperature, Precipitation, Wind
Napa, United States in July experiences a Mediterranean climate characterized by warm, dry conditions. The average temperature hovers around 19.4°C (66.8°F), with daytime highs reaching 27.0°C (80.5°F) and nighttime lows dipping to 13.4°C (56.1°F). Residents and visitors feel comfortable throughout the day, as the average “feels like” temperature closely mirrors the actual temperature at 19.3°C (66.8°F).
July in Napa boasts clear, sunny skies with minimal cloud cover, averaging only 22.2%. The region receives no measurable precipitation during this month, maintaining its reputation as a prime wine-growing area. Humidity levels remain moderate at 66.7%, contributing to the pleasant atmosphere.
Wind patterns in Napa during July are notable, with average wind speeds of 24.1 km/h (15 mph) and gusts reaching 34.3 km/h (21.3 mph). These breezes help moderate temperatures and provide relief on warmer afternoons. Atmospheric pressure stays steady at 1012.6 hPa, indicating stable weather conditions.
Napa Valley’s famous vineyards and wineries benefit from the excellent visibility of 15.8 km (9.8 miles) and high UV index of 9.9 during July. Visitors to popular spots like the Napa Valley Wine Train or the Oxbow Public Market enjoy long, sun-filled days with sunrise occurring around 5:59 AM and sunset at approximately 8:30 PM.
The weather in Napa during July creates ideal conditions for outdoor activities and wine tasting. The combination of warm temperatures, low precipitation, and ample sunshine makes it a perfect time to explore the region’s natural beauty and world-renowned vineyards.
What is the temperature in Napa in July?
Average air temperature in Napa is 19.4°C (66.8°F) in July. The outside temperature in Napa feels like 19.3°C (66.8°F) on a typical July day. The highest average temperature during sunny days is 27°C (80.5°F) and feels like 26.8°C (80.2°F). The lowest average temperature after dark is 13.4°C (56.1°F) which feels like 13.4°C (56.1°F).
How hot is Napa in July?
The hot temperature in July in Napa rises to 33°C (91.4°F) on sunny days with low cloud coverage and 66.7% humidity. During hottest days of July it feels like 32.5 °C (90.5°F). The average maximum temp in Napa is 27°C (90.5°F) during day time in July.
How cold is Napa in July?
The coldest temp in Napa in July drops to 9.9°C (49.8°F) during the cold nights. With 24.1km/h (15mph) winds and 66.7% humidity it feels like 9.9°C (49.8°F) on the coldest nights. The average minimum temperature is 13.4°C (56.1°F) during night time in July.
Does it rain in Napa in July?
No, it does not rain in Napa, United States in July.
Is Napa windy in July?
The average speed of wind in Napa, United States during July is 24.1km/h (15mph) and average windgust is 34.3km/h (21.3mph). On some days in July wind can reach up to 34.2km/h (21.3mph).
What is the direction of the wind in Napa in July?
Most days of July the wind is blowing from Southwest direction in Napa.
What are the humidity levels in Napa in July?
The average humidity levels in Napa in July are 66.7%. Daily humidity levels in Napa range from 58.2% to 72.9% during July.
How many hours of daylight are in Napa in July?
Napa has 14 hours 31 minutes of daylight in July on average. Sunset and sunrise times gradually change throughout the month. Sunrise in Napa in July is at 5:59:04 and the sunset is at 20:30:27.
What is the cloud coverage in Napa in July?
Clouds cover 22.2% of the sky on average throughout July in Napa. The cloud coverage ranges from 0.3% to 56.1% depending on the day of the month.
What is the UV level in July in Napa?
The average UV index in Napa is 9.9 in July. UV levels change throughout the month and range from 9 to 10.
What is the solar radiation in Napa in July?
The average solar radiation is 336.7 W/m2 (Watts per square meter) in Napa during July. However solar radiation levels change throughout the month and range from 306.7 W/m2 to 363 W/m2.
What is the solar energy during July in Napa?
The average solar energy during July in Napa is 29.1 MJ/m2 (megajoules per square metre). Solar energy ranges from 26.6 MJ/m2, to 31.3 MJ/m2 during July.
Are there severe weather risks in Napa in July?
Yes, there is a 10% risk for severe weather in Napa, United States in July.
What is the air pressure in Napa in July?
On average the air pressure in Napa in July is 1012.6 mb (millibars). Throughout the month the sea level pressure ranges from 1009.4 mb to 1015.5 mb.
What is the visibility in Napa in July?
The average daylight visibility in Napa in July is 15.8 km (9.8 miles). Depending on the precipitation the visibility ranges from 15.1 km (9.4 miles) to 16 km (9.9 miles) throughout July.
What is the dew point in Napa in July?
The average dew point in Napa during July is 12.4°C (54.4°F).
Where is the data for Napa climate in July coming from?
The climate data for Napa, California, United States in July is collected from the following weather stations.
- VACAVILLE NUT TREE AIRPORT, CA US
- NAPA CO AIRPORT, CA US
- PETALUMA MUNICIPAL AIRPORT, CA US
- Oakville CA US CIMIS
- FW1058 American Canyon CA US
- FW7520 Sonoma CA US
- KAPC
- KDVO
- KVCB