Mostly clear,rain likely tomorrow
NWS, the American and the European model put Aliso Viejo's high today between 81° and 92°, a 11° split. Tomorrow looks light rain around 81°, with a 94% chance of rain, and the models disagree, so treat it as uncertain.
Aliso Viejo, CA is at its warmest in Aug (average highs near 83°F) and coldest in Feb (lows around 45°F), with roughly 27 in of precipitation across the year. Below, compare what NWS, American, European forecast for Aliso Viejo right now, and see exactly where they disagree.
We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United States before you trust any single number.
The CheckWeather Score blends temperature, wind and rain accuracy — each measured against ERA5 (the recorded weather) over the last 30 days across 1999 cities. Lower error means a higher score. See which forecast model is most accurate in United States, how we measure forecast accuracy, or which model each weather app uses.
The models often agree on temperature and still split on rain — and rain is usually what decides whether a plan survives. A wide rain range means the shower is genuinely uncertain, not that the forecast is wrong.