See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
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Hourly Forecast
Daylight Hours
05:56
Sunrise
17:54
Sunset
Moon
Waxing Crescent
09:40
Moonrise
21:57
Moonset
Daily Forecast
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Air Quality Data Available
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UV Index
Humidity
Weather in San Ramón today, September 16, 2026
Expect unsettled, showery conditions in San Ramón on September 16, 2026 as rain moves through. The day opens on a wet note and needs flexible outdoor plans. Wetter spells lean into the morning, when rain odds reach about 64% near 03:00. Skies look heaviest around 07:00, with cover close to 80%.
Temperatures climb from an overnight low near 19°C toward a daytime high of about 29°C. Expect humidity between 52% and 99%, most humid near 07:00. A lighter breeze peaks around 13:00 near 2.0 km/h.
Through the afternoon wet weather remains a factor, with rain chances near 96% around 14:00. Cloud also stays substantial, close to 65% near 23:00. Visibility holds near 15.0 km, though it can fall to 6.3 km. Daylight runs from 05:56 to 17:54, lasting 11 hours 57 minutes of sunlight today.
The practical takeaway for San Ramón on September 16, 2026 is simple: plan for rain, keep layers handy, and work around a high of about 29°C.
Frequently asked questions about weather in San Ramón
How warm does it get in San Ramón?
The warmest month in San Ramón is September, with average high temperatures of 23°C. The average temperature during this period is around 18°C.
How cold does it get in San Ramón?
The coldest month in San Ramón is July, with average low temperatures of 12°C. The average temperature during this period is around 16°C.
What is the wettest time of year in San Ramón?
The wettest month in San Ramón is January, with an average of 508mm of precipitation.
What is the driest time of year in San Ramón?
The driest month in San Ramón is July, with an average of 53mm of precipitation.
