Trader consensus on Polymarket reflects tight uncertainty in forecast models for Karachi's highest temperature on April 18, with implied odds clustered around 32–34°C amid mainly dry, clear conditions forecasted by the Pakistan Meteorological Department (PMD) for April 16–18. Recent stabilization after early April's record-breaking rains—which cooled nighttime lows below normal—has allowed pre-monsoon continental heating to push daytime highs toward climatological mid-month averages of about 33°C, moderated by afternoon sea breezes from the Arabian Sea. Differentiating factors include sea breeze timing and strength, potentially capping peaks at 32°C, versus sustained high sun angle and low humidity favoring 34°C; global models like GFS and ECMWF show 1–2°C spreads. PMD updates expected today could refine guidance ahead of resolution.