Duluth, Minnesota – Showers and possible thunderstorms could disrupt Friday afternoon plans in Duluth as a fast-moving system brings a 70% chance of rain by 4 p.m. July 18. Drivers should expect slick conditions along I-35 North and plan for slower evening commutes.
According to the National Weather Service, rainfall amounts may exceed a quarter inch in localized downpours, with a slight thunderstorm risk into Friday night. Northwest winds will shift southeast ahead of the system, bringing increased humidity before skies clear Saturday.
Weekend weather turns noticeably drier, with highs near 73°F and mostly sunny skies expected both Saturday and Sunday. Saturday night stays calm and mostly clear with lows in the mid-50s — ideal for outdoor evening plans.
A few spotty showers could return late Sunday night into Monday morning. Monday afternoon remains partly sunny with a high around 75°F and light winds shifting east.
By Tuesday, Duluth residents can expect more summer warmth, with highs near 80°F and continued sunshine through the midweek. However, rain chances return Tuesday night into Wednesday with another round of scattered showers and possible storms.
Five-Day Forecast: Duluth, MN
- Friday, July 18: Showers and storms likely after 4 p.m.; high 66°F
- Saturday: Mostly sunny, high near 73°F
- Sunday: Mostly sunny; slight chance of showers late; high 73°F
- Monday: Partly sunny, chance of showers late; high 75°F
- Tuesday: Mostly sunny, high near 80°F; rain chance returns Tuesday night through Wednesday



