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.
San Ramon Weather in September
With daytime temperatures of 29°C (84°F) and nighttime lows of 13°C (55°F), September in San Ramon brings high temperatures during the day. The excellent weather makes it an appealing time to visit.
Rainfall in San Ramon in September
Records from the past 30 years suggest around a single day of rain, with 3.3 mm (0.1 in) average for the month. On the rare occasion it rains this month, it usually amounts to very little.
Temperature in San Ramon in September
San Ramon in September has excellent weather. Days reach 29°C (84°F) and nights cool to 13°C (55°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. With overnight lows of 13°C (55°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in San Ramon in September
Expect sunny days throughout the month, with an estimated 270 hours of sunshine. This makes it a pleasant time to visit San Ramon.If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit San Ramon.
San Ramon Temperature in September
Min Temperature
13°C (55°F)
Max Temperature
29°C (84°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 (40 KM, 24 Miles).
San Ramon Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in San Ramon - 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 San Ramon in September
Warm but pleasant conditions in San Ramon in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Dry conditions mean you won't need to worry about rain protection. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in San Ramon 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
San Ramon 3-Day Forecast
More climate data for San Ramon
Temperature Rainfall Sunshine Humidity
See the full San Ramon 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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