National Weather Service observations at Buckley Space Force Base, the market's resolution station, confirm early morning temperatures reaching the mid-60s°F on April 17, 2026, under mostly cloudy skies with low humidity around 11%, already surpassing the 54°F threshold and driving trader consensus to 100% certainty for "54°F or higher." This residual warmth stems from yesterday's high near 75°F ahead of a sharp cold frontal passage, as forecast model ensembles from NOAA predicted; subsequent breezy conditions with 80% chance of rain/snow showers limit the daytime high to around 42°F per latest NWS guidance, accompanied by a freeze warning tonight. Realistic challenges are negligible—only an unprecedented preliminary data revision by official METAR records could alter this, though historical station reliability and multiple corroborating reports make it improbable. Traders await the final daily climate summary for confirmation.