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Hourly Forecast
Daylight Hours
06:36
Sunrise
18:49
Sunset
Moon
Waxing Crescent
10:07
Moonrise
20:13
Moonset
Daily Forecast
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Today
Wednesday
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Air Quality Data Available
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UV Index
Humidity
Weather in Chula Vista tomorrow, September 15, 2026
Chula Vista starts September 15, 2026 under largely sunny skies, with bright spells setting the tone from the outset. Outdoor plans should enjoy long stretches of open sky as the day unfolds. Cloud leads the morning, peaking close to 100% near 00:00. Sunshine has little room until later in the day.
Expect highs of 26°C and cooler readings close to 21°C. Moisture in the air spans 69%-88%, with the highest values around 00:00. A lighter breeze peaks around 12:00 near 9.5 km/h.
Afternoon conditions open up, holding cloud close to 48% near 15:00. The day finishes on a milder, brighter note. Visibility stays generally good near 15.5 km on average, though it can drop toward 14.4 km in thicker cloud or showers. Expect sunrise at 06:37, sunset at 18:48, and 12 hours 11 minutes of sunlight today overall.
Overall, Chula Vista on September 15, 2026 favours outdoor plans under mostly open skies, with a comfortable high near 26°C.
Frequently asked questions about weather in Chula Vista
How warm does it get in Chula Vista?
The warmest month in Chula Vista is August, with average high temperatures of 28°C. The average temperature during this period is around 23°C.
How cold does it get in Chula Vista?
The coldest month in Chula Vista is January, with average low temperatures of 9°C. The average temperature during this period is around 13°C.
What is the wettest time of year in Chula Vista?
The wettest month in Chula Vista is March, with an average of 67mm of precipitation.
What is the driest time of year in Chula Vista?
The driest month in Chula Vista is June, with an average of 2mm of precipitation.
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