Warm Midwest Weekend; Showers, Storms Elsewhere

Weather will vary widely across North America this final weekend of September. Much of the northern Plains, Rockies and Midwest will be unseasonably warm and mostly dry this weekend with highs mainly in the 70s–80s, though the forecast no longer guarantees that warmth will persist into early October. Southern California will be cool and cloudy with light coastal drizzle today before a shift to mountain and desert showers Saturday; the Southwest—especially southern Utah—can expect scattered showers and thunderstorms this weekend, some possibly heavy, with a cold front bringing cooler conditions early next week. Northeast Florida is likely to see a final summerlike day with low-90s and heavy afternoon/evening downpours as a stalled frontal boundary keeps showers through Saturday. Maine should dry to a mild, sunny weekend favorable for leaf‑peeping but remains under ongoing drought with a moderate fire risk; London, Ontario has only a low overnight shower chance. The Cheyenne Astronomical Society notes Venus and Jupiter will be visible on October mornings and its free monthly meetings are open to the public.