Napa September Weather Averages California, United States of America

September Weather Averages for Napa

High Temp	28°C	83°F
Low Temp	15°C	58°F
Avg Temp	20°C	69°F
Sunshine Hours	332 hours
Rainfall	3.44 mm	0.14 In
Rain days	0 days
Pressure	1013 mb	30 In

Napa September Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2009	30°C / 87°F	16°C / 60°F	22°C / 71°F	348 hours	4.70 mm / 0.19 In	1 days	1014 mb / 30 In
2010	30°C / 86°F	13°C / 56°F	21°C / 69°F	348 hours	0.00 mm / 0.00 In	0 days	1013 mb / 30 In
2011	29°C / 84°F	15°C / 59°F	21°C / 69°F	344 hours	2.40 mm / 0.09 In	1 days	1014 mb / 30 In
2012	27°C / 81°F	13°C / 55°F	19°C / 66°F	336 hours	0.00 mm / 0.00 In	0 days	1015 mb / 30 In
2013	27°C / 80°F	14°C / 58°F	20°C / 67°F	338 hours	8.10 mm / 0.32 In	1 days	1013 mb / 30 In
2014	27°C / 81°F	15°C / 58°F	20°C / 68°F	342 hours	3.30 mm / 0.13 In	0 days	1012 mb / 30 In
2015	28°C / 83°F	16°C / 60°F	21°C / 70°F	308 hours	2.30 mm / 0.09 In	0 days	1012 mb / 30 In
2016	28°C / 82°F	14°C / 57°F	20°C / 67°F	359 hours	0.00 mm / 0.00 In	0 days	1014 mb / 30 In
2017	29°C / 83°F	17°C / 63°F	22°C / 72°F	329 hours	1.20 mm / 0.05 In	0 days	1013 mb / 30 In
2018	27°C / 81°F	14°C / 57°F	20°C / 67°F	339 hours	0.10 mm / 0.00 In	0 days	1013 mb / 30 In
2019	28°C / 82°F	16°C / 60°F	21°C / 70°F	341 hours	0.60 mm / 0.02 In	0 days	1013 mb / 30 In
2020	31°C / 88°F	16°C / 62°F	23°C / 73°F	352 hours	0.00 mm / 0.00 In	0 days	1014 mb / 30 In
2021	30°C / 86°F	13°C / 56°F	20°C / 69°F	343 hours	0.80 mm / 0.03 In	0 days	1013 mb / 30 In
2022	31°C / 87°F	15°C / 59°F	21°C / 71°F	305 hours	26.50 mm / 1.04 In	2 days	1011 mb / 30 In
2023	26°C / 79°F	12°C / 54°F	18°C / 64°F	250 hours	1.55 mm / 0.06 In	0 days	1014 mb / 30 In

California

Cities Near Napa

Quick and Easy Signup for Weather API

WeatherAPI.com makes it super easy to integrate our realtime, daily, hourly and 15 min interval weather forecast data, historical weather, marine weather, bulk request, air quality data, autocomplete, time zone, astronomy and sports data into your new or existing project.

Get Started