This market predicts whether London will experience a maximum daily temperature of exactly 13°C on April 19, 2026. London's spring weather is typically variable, with daily highs ranging from 10°C to 16°C in mid-April depending on synoptic patterns. At 2% odds, traders assign very low probability to this specific temperature outcome, indicating most market participants expect the daily high to deviate from 13°C either upward or downward. The current odds reflect the inherent difficulty of predicting an exact temperature versus broader temperature ranges. The market settles using official UK Met Office data for London's daily maximum temperature from recognized weather stations across the city. Although weather prediction uncertainty generally increases with longer timeframes, with settlement just two days away, meteorological models offer reasonable clarity on the expected temperature range. The minimal trading volume relative to this market's specificity is typical for daily temperature predictions, which attract specialized weather traders and meteorological enthusiasts. Price action history shows negligible volatility, reflecting the market's narrow focus. This market resolves at midnight UTC on April 19 based on the highest temperature officially recorded throughout that calendar day.