Irvine, CA Weather Forecast
Orange County, California
Seven-day outlook
56–74°F across the weekThe week runs between 57° and 74°, with Tuesday the warmest day of it. There is no real trend across it: one day looks much like the next. Sunday is the wettest day, peaking near 79%. 4 of the 7 days stay dry.
Forecasts come from the National Weather Service's own computer models, and current conditions from the nearest reporting weather station. Both are served through the weather API. A forecast is guidance, not a warning, and anything the Weather Service has actually issued is on the live map.
The written summaries on this page are generated from the forecast data above, not by a meteorologist. Each sentence is a reading of the same numbers you can see, and no forecaster has reviewed them.
About the Irvine forecast
Irvine sits at 33.6784°N, 117.7713°W in Orange County, California. The forecast above is drawn for that point from the National Weather Service's own computer models: a seven-day outlook, and a finer-grained one covering the next eighteen hours where it reaches, and the radar and alert panels show what the Weather Service has out over the area right now.
- County
- Orange County
- Coordinates
- 33.6784°N, 117.7713°W
- Population
- 314,621 · 2023 estimate
- Land area
- 65.613 sq mi
Place data from the US Census Bureau. Coordinates are the Census internal point for Irvine, and the forecast is for that location, not for every address inside the city limits, and a large city can have real weather differences from one side to the other.
How well can the network see Irvine?
The nearest Doppler radar is KSOX (Santa Ana Mountains, CA), 12 miles to the NE. A WSR-88D's lowest routine scan sits half a degree above horizontal, and the earth curves away beneath it, so by the time that beam reaches Irvine its center is about 650 ft above ground. That is about as close as radar coverage gets in the United States: the lowest scan is still near the ground when it reaches Irvine, so low-level rotation and the leading edge of a gust front show up on it. Irvine is closer to its radar than 93% of US cities.
The closest instrument actually measuring the air is KSNA · Santa Ana/Wayne Arpt on the ASOS/AWOS network, 5.5 miles away. Near enough to be representative on most days, though a summer thunderstorm can soak one and miss the other entirely.
Beam height is the standard 4/3-earth approximation for the 0.5° scan and assumes normal refraction; it is where the center of the beam is, not its edges, and unusual temperature profiles bend it. Radar siting from the NWS WSR-88D network, station positions from the California observing network as of this build.
Forecasts near Irvine
- Tustin, CA4 mi
- Laguna Woods, CA5 mi
- Lake Forest, CA6 mi
- Aliso Viejo, CA7 mi
- Laguna Hills, CA7 mi
- Santa Ana, CA8 mi
- Mission Viejo, CA8 mi
- Costa Mesa, CA8 mi
Elsewhere in California
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