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Hourly Forecast
Daylight Hours
06:49
Sunrise
19:02
Sunset
Moon
Waxing Crescent
12:42
Moonrise
21:07
Moonset
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Weather in Fullerton today, September 16, 2026
Fullerton is set for a fine, sunny day on September 16, 2026, with only limited interruptions to the clear sky. The early hours look particularly favourable for being outside. Expect a brighter morning, with limited cloud around 4% by 10:00. Conditions start on a settled note.
Temperatures climb from an overnight low near 13°C toward a daytime high of about 28°C. Moisture in the air spans 50%-91%, with the highest values around 08:00. Expect gentle winds, highest near 13:00 at 3.5 km/h.
Expect persistent cloud later on, with amounts around 78% by 18:00. Sunshine remains the exception, not the rule. Visibility stays generally good near 15.9 km on average, though it can drop toward 13.5 km in thicker cloud or showers. The sun rises at 06:49 and sets at 19:02, for a total of 12 hours 12 minutes of sunlight today.
Overall, Fullerton on September 16, 2026 favours outdoor plans under mostly open skies, with a comfortable high near 28°C.
Frequently asked questions about weather in Fullerton
How warm does it get in Fullerton?
The warmest month in Fullerton is July, with average high temperatures of 30°C. The average temperature during this period is around 25°C.
How cold does it get in Fullerton?
The coldest month in Fullerton is January, with average low temperatures of -4°C. The average temperature during this period is around 0°C.
What is the wettest time of year in Fullerton?
The wettest month in Fullerton is July, with an average of 124mm of precipitation.
What is the driest time of year in Fullerton?
The driest month in Fullerton is November, with an average of 86mm of precipitation.
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