Friday starts off mostly sunny and warm with temperatures around 43 in the morning. By afternoon, highs will reach a comfortable 64. Winds pick up from the WNW at 10 to 20 mph gusts. As evening falls, expect partly cloudy skies with areas of late-night fog and temperatures dropping to 43 overnight with a chilly feels like near 38.
Saturday begins with some morning fog, then it turns partly sunny with highs around 61 and lows at 58. Winds come from the southeast at 10 to 22 mph gusts. Showers appear late evening, followed by steady rain overnight and into Sunday. There’s an 88% chance of rain Saturday night with a slight chance of thunderstorms.
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Sunday will be the wettest day with periods of rain and thunderstorms, especially in the afternoon. Highs reach near 68 with lows falling to 19 overnight. Winds increase from the southwest at 14 mph, gusting up to 40 mph, bringing hail and damaging winds risks with the storms. It turns windy and colder late in the day.
A high of 68 degrees on Sunday, December 28, 2025, in the St. Louis area (which includes Alton, IL) will not be a record high. The existing record high for that date is 75 degrees.
Based on current forecasts from the National Weather Service, the expected high temperature for St. Louis on Sunday, December 28, 2025, is actually slightly lower than 68 degrees.
Get the latest updates on weather conditions here: RiverBender.com/weather.
