Will the minimum temperature be 56-57° on Apr 17, 2026?

The official NWS point forecast for LAX projects a low of 52-54°F, well below the 56-57°F target bin. This forecast is driven by an arriving offshore flow that will introduce drier air to the Los Angeles basin, lowering dew points and facilitating efficient radiational cooling before sunrise. Real-time observations show the temperature is already hovering at 56°F as of 3:40 AM PDT. With sunrise not occurring until approximately 6:15 AM, the standard nocturnal cooling curve makes a drop of at least one additional degree highly probable. If the mercury touches 55°F at any point, the YES side is immediately invalidated. Even if the morning low holds at 56°F, the daily minimum is recorded on a strict midnight-to-midnight basis. The incoming dry air mass and clearing skies leave the region vulnerable to a late-evening temperature drop before 11:59 PM, providing a second window for the temperature to fall below the target range.

A deep 2,500-foot marine layer is currently blanketing the Los Angeles basin, acting as a thermal insulator. This coastal dampening effect frequently prevents temperatures from dropping as low as synoptic models suggest, and current high humidity levels create a physical floor near the current dew point. Both the GFS and ECMWF high-resolution ensemble members, along with AccuWeather's localized forecast, have converged on a minimum temperature of 56-57°F. If the marine layer remains stubbornly pinned to the coast through dawn, the temperature will likely stall at its current level. A developing moderate Santa Ana wind event could introduce adiabatically warmed air from higher elevations before sunrise. If these offshore winds reach the coastal sensor at LAX early enough, they will disrupt the radiational cooling process by maintaining vertical mixing, locking in the 56°F low.