Current National Weather Service and model guidance point to an overnight low near 77–78°F in Austin on August 24 under mostly clear skies and light southerly flow, with dew points in the low-to-mid 70s limiting radiational cooling. This places the outcome near the boundary between the 74–75°F and 76–77°F bins that together command roughly half the market volume. Recent model runs show modest spread due to small differences in predicted cloud cover and boundary-layer mixing; any increase in humidity or a slight uptick in winds would hold temperatures higher, while clearer, calmer conditions could shave 2–3°F. Historical August climatology (average low near 75°F) and the absence of incoming fronts keep probabilities clustered in the mid-70s range, reflecting trader assessment of these narrow but decisive atmospheric variables.