See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:38
Sunrise
18:47
Sunset
Moon
Waxing Crescent
12:09
Moonrise
21:21
Moonset
Daily Forecast
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Air Quality Data Available
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UV Index
Humidity
Weather in San Diego today, September 16, 2026
Cloud cover dominates in San Diego on September 16, 2026, keeping sunshine limited. Expect a grey, overcast feel rather than long bright spells. The first half of the day looks overcast, as cloud amounts reach about 100% around 05:00. Brighter weather, if it comes, waits until later.
The temperature range runs from about 20°C up to 26°C. The air stays humid, with relative humidity between 64% and 84% and the peak around 10:00. Airflow remains manageable, reaching about 4.0 km/h around 22:00.
Afternoon skies stay clogged, peaking close to 100% near 12:00. The grey theme continues rather than clearing out. Visibility holds near 16.0 km, though it can fall to 14.7 km. Sunrise is at 06:38 and sunset at 18:47, giving 12 hours 9 minutes of sunlight today.
Taken together, overcast skies in San Diego on September 16, 2026 favour indoor or covered options, with temperatures near 26°C.
Frequently asked questions about weather in San Diego
How warm does it get in San Diego?
The warmest month in San Diego is August, with average high temperatures of 24°C. The average temperature during this period is around 21°C.
How cold does it get in San Diego?
The coldest month in San Diego is February, with average low temperatures of 11°C. The average temperature during this period is around 14°C.
What is the wettest time of year in San Diego?
The wettest month in San Diego is March, with an average of 54mm of precipitation.
What is the driest time of year in San Diego?
The driest month in San Diego is July, with an average of 1mm of precipitation.
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