Will the minimum temperature be 40-41° on Apr 30, 2026?

The primary evidence for a NO resolution is the strong consensus among major meteorological models forecasting a daily minimum of 35-36F. While some morning forecasts anchored near 39-40F, the calendar day minimum rule (midnight to midnight) provides a decisive edge. The National Weather Service projects a Thursday night low of 35F, meaning even if the morning temperature stalls at 40F, the evening temperature will almost certainly cross below the threshold before 11:59 PM. Furthermore, real-time observations show the temperature already dropping to 42F by early morning. With a cold front moving in and evaporative cooling expected from incoming precipitation, the atmospheric setup strongly favors the temperature sliding past the narrow 40-41F bin. Prediction market consensus on Kalshi heavily favors the 36-37F bracket, corroborating the official forecasts. The 40-41F bin requires a perfectly timed weather stall to hit, making it a statistical longshot against the broader cooling trend.

The case for a YES resolution relies on the insulating effect of heavy cloud cover and a delay in the incoming cold front. If the cloud deck remains thick through the morning and precipitation is lighter than expected, radiational cooling will be severely limited. This could cause the morning temperature drop to stall exactly in the 40-41F range. Additionally, if the Thursday night cold front is delayed by 6-8 hours, the evening temperature drop might not materialize before the midnight cutoff. In this scenario, the calendar day minimum would be locked in by the morning low. Historical precedents exist for this specific outcome, with 40F being a relatively common landing spot for late April cold snaps in Denver. Standard forecast errors of 2-3 degrees could easily turn a projected 39F morning low into an actual 40F or 41F observation at KDEN.