Moscow experiences variable spring weather in mid-to-late April, with typical highs ranging from 8 to 15 degrees Celsius depending on air mass origins and seasonal patterns. An exact high of 4°C would represent cooler-than-average conditions for this period, reflecting lingering winter influences from northern atmospheric systems. The market resolves based on official data from Moscow's meteorological stations on April 20, measured at standard observation times and consolidated daily. At 6% odds, the market indicates traders view this specific outcome as unlikely, though plausible given natural weather variability and forecast uncertainty in spring months. Prediction markets like this appeal to weather analysts, climate enthusiasts, and data scientists who track seasonal temperature patterns and atmospheric circulation models across different geographic regions. The modest liquidity of $2,499 suggests specialized trading interest rather than mainstream attention, typical for hyper-specific weather outcomes requiring precise measurement. Volume has remained steady at roughly $1,378 per day, indicating consistent but niche participation from dedicated weather traders and hedgers. Early odds at 6% reflect the probabilistic rarity of hitting an exact temperature threshold in a continuous distribution range. Traders entering this market are typically hedging weather-dependent business operations or speculating on temperature anomalies during spring seasonal transition periods.