Will the lowest temperature in Chengdu be 14°C or below on September 15?

Analysis

The most concrete data point on hand is a recent reading from the Chengdu Shuangliu station itself, which showed a temperature near 68°F, or about 20°C, in a report from earlier in the week. That single observation does not forecast September 15 directly, but it does show the kind of mild air mass that has been sitting over the station recently, and it argues against a sudden drop into the low teens by mid month. NOAA's own timeseries page for the airport carries a standing caveat that its readings are preliminary and subject to later quality control, so any single data point, including the eventual reading for September 15, should be treated as provisional until it is finalized. That is simply how the source itself describes its data, not a sign of unusual uncertainty this time around. A separate forecast discussion for the same date describes a clear night with a low near 79°F, but that text is attributed to a different location entirely and given in Fahrenheit, so it cannot be read onto the Chengdu station without more care. It is included here only as a reminder that other nearby narratives exist, not as evidence for this specific site. Putting these pieces together, the lean is toward a low temperature staying comfortably above the 14°C mark rather than dipping into or below it. The one thing worth watching is whether the actual station reading, once posted and finalized, shows a sharper overnight cooling than the recent pattern suggests.