St. Louis/ Weather & Environment

St. Louis Basks in Summerlike 79 Before Halloween Rain Haunts Weekend

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Published on October 25, 2026
St. Louis Basks in Summerlike 79 Before Halloween Rain Haunts WeekendSource: Google Street View

St. Louis can expect a sunny afternoon near 79 degrees, while cool nights continue. Rain is not expected as the city settles into another warm late-October day.

Warm Afternoon, Crisp Night

Sunday is expected to be mostly sunny. The latest National Weather Service discussion describes overnight cooling into the upper 40s to near 50.

Warmth Holds Through Thursday

Monday should remain mild, with partly sunny skies and a high near 78 before temperatures dip to about 53 overnight. Tuesday will be partly sunny, followed by mostly sunny Wednesday and Thursday. Daytime temperatures will reach the 70s to near 80.

Rain Chances Return For Halloween Weekend

Friday still looks mostly sunny and warm, with a high near 80, but rain chances are expected to peak Saturday into Sunday, though timing remains uncertain.

For now, outdoor plans look easy through Friday: bring a light layer for the morning and expect comfortable afternoons. No watches, warnings or advisories are listed for the St. Louis forecast area.