Southern California is bracing for the arrival of Santa Ana winds this weekend, which are expected to drive temperatures up significantly across the region. The National Weather Service predicts that temperatures will steadily increase each day until Sunday, with widespread highs reaching the 80s°F (27°C). This peak in warmth coincides with the L.A. Marathon, potentially affecting both runners and spectators. Coastal areas will also experience milder weather, with highs in the 70s°F (21°C).