Todays weather in Knoxville TN - Wednesday - 13 May 2026

(00:00:00) Todays weather in Knoxville TN - Wednesday - 13 May 2026 (00:00:33) What to Wear This Weekend (00:01:31) Wednesday Storm Risk (00:02:05) Spring Heat Surge Context (00:02:41) Rain Returns Early Next Week (00:03:23) Weekend Forecast Takeaway Knoxville is stepping into its warmest spring weekend of 2026, with highs pushing into the upper 80s and near-90 degrees possible both Saturday and Sunday. A building upper-level ridge across the Southeast is locking in sunshine and above-average temperatures through at least early next week — and the Knoxville valley position means those numbers could run slightly hotter than the broader regional forecast suggests.For Friday through Sunday, the forecast is about as clean as East Tennessee spring weather gets: full sunshine, light west-southwest winds at 10-15 mph, and no meaningful precipitation risk. Daytime calls for lightweight clothing, breathable fabrics, and sunscreen — near-90 in direct sun feels more intense than the thermometer reads, especially if you're active outdoors. Don't be caught off guard by the overnight swing: tonight's low drops to around 54 degrees, a gap of roughly 35 degrees from your afternoon high. Bring a light layer for evening outings.Before the warm weekend arrives, Wednesday carries an isolated shower or thunderstorm chance — not a widespread event, but enough to warrant a light rain layer for the morning commute or outdoor plans. The risk clears into Thursday, and high pressure takes full control from there.Rain returns early next week as the ridge retreats and the pattern shifts back toward cooler, wetter conditions. The weekend window is real and it's finite — Friday through Sunday is the cleanest stretch Knoxville has seen all spring. Whether you're hiking, doing yard work, or simply enjoying the outdoors, this is the window to use.Light clothes for the day, a layer for the evening, sunscreen in your bag. That's your weekend formula.This episode includes AI-generated content.