Current short-range forecast models indicate Helsinki's August 3 daytime maximum will likely peak near 21–22°C, with traders assigning roughly 65% combined probability to those two outcomes amid genuine model uncertainty. The Baltic Sea's moderating influence keeps readings close to seasonal norms for southern Finland, where typical early-August highs range 19–23°C depending on cloud cover, wind direction, and surface pressure patterns. Clearer skies and light southerly flow could allow modest daytime heating toward 23°C, while increased marine stratus or a weak trough would cap values at 20°C or below. Key variables include the timing of any frontal passage and net radiation balance over the next 48 hours; updated ECMWF and GFS runs plus local observations will likely refine the range before resolution.