Persistent monsoon-related cloud cover, high humidity near 90%, and scattered rainfall are limiting nighttime radiative cooling in Lucknow, producing minimum temperatures clustered near 22–23°C according to India Meteorological Department forecasts and multiple model runs for September 27. Recent heavy precipitation exceeding 100 mm in prior days has sustained moist boundary-layer conditions that suppress both sharp drops and strong warming, narrowing the expected diurnal range. Trader sentiment remains closely divided between the 27°C-or-higher and 17°C-or-below outcomes because small shifts in overnight wind speed, cloud thickness, or localized rain timing could alter the exact minimum by several degrees; updated short-range model guidance and official nowcasts over the next 48 hours will likely resolve much of this uncertainty.