See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
21°
Overcast
Feels Like: 17°
Min: 19°
Max: 24°
The next few hours will be overcast, with today reaching 24°C and dropping to 17°C. The coming days will be mostly clear throughout the day.
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:41
Sunrise
18:50
Sunset
Moon
Waxing Crescent
12:15
Moonrise
21:22
Moonset
Daily Forecast
Today
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Air Quality Data Available
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UV Index
Humidity
Weather in Fountain Valley today, September 16, 2026
Fountain Valley looks cloudy on September 16, 2026, with grey skies for much of the day. Sunshine stays limited, so the overall tone is muted from the morning onward. Cloud leads the morning, peaking close to 100% near 02:00. Sunshine has little room until later in the day.
The day peaks near 24°C and cools toward 19°C. Moisture in the air spans 63%-91%, with the highest values around 23:00. A lighter breeze peaks around 14:00 near 4.2 km/h.
The afternoon keeps an overcast feel, as cloud reaches about 100% around 12:00. Outdoor plans may still want a flexible backup. Expect visibility near 15.8 km, with poorer spells close to 13.6 km. The sun rises at 06:41 and sets at 18:50, for a total of 12 hours 9 minutes of sunlight today.
The practical takeaway for Fountain Valley on September 16, 2026 is a cloudy day that stays usable, just not particularly bright, around 24°C.
Frequently asked questions about weather in Fountain Valley
How warm does it get in Fountain Valley?
The warmest month in Fountain Valley is August, with average high temperatures of 27°C. The average temperature during this period is around 23°C.
How cold does it get in Fountain Valley?
The coldest month in Fountain Valley is January, with average low temperatures of 10°C. The average temperature during this period is around 14°C.
What is the wettest time of year in Fountain Valley?
The wettest month in Fountain Valley is January, with an average of 74mm of precipitation.
What is the driest time of year in Fountain Valley?
The driest month in Fountain Valley is July, with an average of 1mm of precipitation.
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