Trader consensus favoring no rain at the Italian Grand Prix reflects typical early-September patterns at Monza, where late-summer high pressure often delivers warm, stable conditions with low precipitation risk. Seasonal outlooks point to daytime highs near 26-30°C and minimal shower chances during race weekend, consistent with historical data showing roughly seven rainy days across the full month but drier stretches common in the first week. Recent local forecasts through late August show intermittent light rain easing into clearer skies, supporting the 73% implied probability that teams can plan standard dry setups without wet-weather tire changes or safety car interruptions. While isolated showers remain possible given regional variability, the outlook favors uninterrupted dry running.