See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
20°
Overcast
Feels Like: 18°
Min: 18°
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
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:40
Sunrise
18:50
Sunset
Moon
Waxing Crescent
12:15
Moonrise
21:21
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 Irvine today, September 16, 2026
Irvine starts September 16, 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. Expect a grey start, with morning cloud around 100% by 01:00. Outdoor plans early on should not rely on bright skies.
The temperature range runs from about 18°C up to 24°C. Relative humidity sits between 62% and 91%, reaching its peak around 08:00. A lighter breeze peaks around 14:00 near 4.6 km/h.
Afternoon skies stay clogged, peaking close to 64% near 12:00. The grey theme continues rather than clearing out. Visibility holds near 15.5 km, though it can fall to 5.9 km. Sunrise is at 06:40 and sunset at 18:50, giving 12 hours 9 minutes of sunlight today.
Taken together, settled sunshine in Irvine on September 16, 2026 makes outdoor timing easier, with highs near 24°C.
Frequently asked questions about weather in Irvine
How warm does it get in Irvine?
The warmest month in Irvine is August, with average high temperatures of 29°C. The average temperature during this period is around 23°C.
How cold does it get in Irvine?
The coldest month in Irvine 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 Irvine?
The wettest month in Irvine is January, with an average of 81mm of precipitation.
What is the driest time of year in Irvine?
The driest month in Irvine is July, with an average of 1mm of precipitation.
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