Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
Vallejo Weather in September
September in Vallejo sees daytime temperatures around 27°C (81°F) and lows of 12°C (54°F) at night. The excellent weather makes it a good time to visit.
Rainfall in Vallejo in September
Climate statistics over the past 30 years suggest around a single day of rain, with 3.3 mm (0.1 in) average for the month. Any rain that does arrive is likely to be light drizzle rather than a proper shower.
Temperature in Vallejo in September
September is a good time to be in Vallejo. Days are excellent, reaching 27°C (81°F), with nights around 12°C (54°F). September is part of summer. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. Nights drop to around 12°C (54°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable. It's the warmest month of the year on average, so summer clothing is the way to go.
Sunshine in Vallejo in September
Enjoy a sunny month with about 270 hours of sunshine, the clear skies make Vallejo even more beautiful.If you favor pleasant temperatures and minimal rainfall, September is one of the best months to visit Vallejo.
Vallejo Temperature in September
Min Temperature
12°C (54°F)
Max Temperature
27°C (81°F)
Chance of Rain
3%
Precipitation
3.3 mm (0.1 in)
Rainy days
a single day
Humidity
73% *
Sunshine
270 hours *
Percentage Sunshine
73% *
* Data from: San Francisco, the United States of America (55 KM, 34 Miles).
Vallejo Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Vallejo - and find the best time to visit.
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Vallejo in September
Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Almost no rain is expected, so no need to bring rain gear. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
What To Do in Vallejo in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming10/10 -
Cycling8/10 -
Walking8/10 -
Barbeque10/10 -
Camping10/10 -
Outdoor sports8/10
Vallejo 3-Day Forecast
More climate data for Vallejo
Temperature Rainfall Sunshine Humidity
See the full Vallejo climate overview or explore weather in the United States of America.
Popular in September
Where to go in September - average daytime high across popular destinations.
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Need travel inspiration? Check out our bucket list articles and be inspired.
Yosemite National Park is definitely worth a visit
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