Napa weather in September 2024

The temperatures in Napa in September are comfortable with low of 15°C and and high up to 29°C.

You can expect up to 3 rainy days in Napa during the month of September.

Our weather forecast can give you a great sense of what weather to expect in Napa in September 2024.

If you’re planning to visit Napa in the near future, we highly recommend that you review the 14 day weather forecast for Napa before you arrive.

Temperatures

29° / 15°

Rainy Days

Snowy Days

Dry Days

Rainfall

Sun Hours

11.9

Hrs

Explore the weather in Napa in other months

Month	Temperatures	Rainy Days	Dry Days	Rainfall	Weather	More details
January	15° / 7°	5	26	121 mm	Good	Napa in January
February	16° / 7°	4	24	111 mm	Good	Napa in February
March	17° / 8°	6	25	103 mm	Good	Napa in March
April	20° / 9°	3	28	41 mm	Good	Napa in April
May	23° / 11°	2	29	25 mm	Perfect	Napa in May
June	27° / 13°	1	29	7 mm	Perfect	Napa in June
July	29° / 14°	0	31	2 mm	Good	Napa in July
August	29° / 15°	0	31	2 mm	Good	Napa in August
September	29° / 15°	0	30	3 mm	Good	Napa in September
October	24° / 14°	2	29	47 mm	Perfect	Napa in October
November	18° / 10°	3	27	65 mm	Good	Napa in November
December	14° / 7°	5	26	96 mm	Good	Napa in December